A process for activating clays having high residual moisture by: feeding wet clay into a device for drying, comminuting the previously dried clay in a device for comminuting, thermally activating the comminuted clay in an entrained flow reactor or in a fluidized bed reactor in which the comminuted clay is in suspension in a hot gas, removing the gas from the entrained flow reactor or the fluidized bed reactor in a device for removing, and cooling the thermally activated clay in a device for cooling with a cooling gas, and to a corresponding plant. The cooling gas, heated after cooling the thermally activated clay, is combined with the gas from the reactor, and the combined gases are introduced into the drying device. The drying air is filtered after drying, and clay removed by filtration is unified with the dried clay.
A conveying device for conveying bulk material for a plant for producing cement clinker, wherein the plant operates in the recirculation process and/or in the oxy-fuel process, and wherein the conveying device has a connection to the plant, in which the bulk material to be transported passes into the plant. A connection between the conveying device and the plant for producing cement clinker has a gas supply for pressurizing the connection with recirculation gas.
A conveying device for conveying bulk material for a plant for producing cement clinker, wherein the plant for producing cement clinker operates in the recirculation process and/or in the oxy-fuel process, and wherein the conveying device has a connection to the plant, in which the bulk material to be transported passes into the plant. The connection between the conveying device and the plant for producing cement clinker has a gas supply for pressurizing the connection with recirculation gas. Also a method.
A high pressure roll press has two counter-rotating rolls configuring a roll nip through which milling material passes and is comminuted under high pressure by forming a fracture in a milling material structure in the roll nip. A feeder device feeds the milling material homogeneously onto the roll nip. The volume of the fed milling material configures a compaction zone, which reaches from approximately the center of the roll nip to just beyond the center of the roll nip. A vibration device for pre-compressing the milling material is arranged above the compaction zone, reaching into the compaction zone. A metering slide is arranged within the feeder device to set the feeding location and the feeding quantity of the milling material onto the roll nip. The vibration device is connected to the metering slide, wherein the metering slide conducts the vibration energy of the vibration device into the compaction zone.
The invention relates to a method for activating clays with secondary fuel, comprising the following steps: Drying and crushing (2) moist clay as raw material (1), thermally activating (7) the dried and crushed clay (100) in an entrained-flow reactor (230), wherein a first part of the clay (120, 132) is fluidized together with secondary fuel in a fluidized-bed reactor (200) and the secondary fuel is burned there in the presence of this first part of the clay (120, 132), introducing the offgas from the fluidized-bed reactor (200), which carries within it the first part of the clay (120, 132), into the entrained-flow reactor (230), where a second part of the clay (130) is thermally activated together with the first part of the clay (120, 132) in the entrained-flow reactor (230) to form thermally activated clay (131). The invention also relates to an installation for carrying out the method.
The invention relates to a clinker cooler (100) for cooling freshly sintered cement clinker (101) in a system for producing cement clinker, having a first part (110), upstream in a material flow direction, and a second part (120), downstream in a material flow direction, wherein both parts (110, 120) have a continuous grating (130) through which cooling gas (132) can flow from below through cooling gas supply lines (131) and on which the cement clinker (101) lies in bulk for cooling, wherein the entire grating (130) in both parts (110, 120) is continuously enclosed by an enclosure (140) with housing walls (141) and a housing cover (142). According to the invention, in the first part (110), upstream in the material flow direction, and in the second part (120), downstream in the material flow direction, in the housing walls (141) and in the housing cover (142), gas nozzles (150) are arranged in at least one plane (160, 161, 162) which is perpendicular to the direction of the material flow, wherein the at least one plane (160, 161, 162) of the gas nozzles (150) divides the clinker cooler (100) into the first part (110) and the second part (120).
A high-pressure roller mill for comminuting brittle grinding stock having at least two adjacent rotating grinding rollers which rotate in opposite directions and form a nip therebetween, wherein a first grinding roller is a fixed roller and a second grinding roller is an idle roller, and a lateral wall at each of the two ends of the nip. Each lateral wall has a vibration device which sets the lateral wall into mechanical vibration.
The invention relates to a device for measuring the wear (Δ) of a roller (102, 103) of a high-pressure roller press (100) and to a corresponding method for measuring this wear (Δ). According to the invention, the following is provided: at least one sensor (200, 200'), which can be moved over the length of the roller (102, 103) by a movement device (216, 216'), for measuring the surface speed of the roller (102, 103), at least one angular speed measuring device (215, 215') which cooperates with a shaft of the roller (102, 103), and at least one computer device (220) which is connected to the at least one sensor (200, 200') and the at least one angular speed measuring device (215, 215') and which relates the angular speed of the roller (102, 103) to the surface speed and calculates the wear (Δ) of the roller (102, 103) therefrom.
A raw meal delivery device for delivering raw meal into a gas line or a reactor of a system for producing cement clinker, having a connection line for connecting a raw meal line to the gas line or the reactor, an oblique raw meal chute arranged inside the connection line and via which raw meal passes from the raw meal line into the gas line or to the reactor, a baffle slide arranged at the foot of the raw meal chute and protruding into the path of the raw meal flowing via the raw meal chute and deflecting the incoming raw meal. A substantially convex displacement body is arranged on the baffle slide and lies in the path of the incoming raw meal and disperses the flow of raw meal. The displacement body disperses the raw meal on entry into the calciner with the effect of quicker calcination.
The invention relates to a method for operating a carbonisation furnace (100) in a plant for producing cement clinker (1000), having at least one rotary kiln (120) for sintering cement clinker, at least one clinker cooler (130), arranged downstream of the rotary kiln (120) in the material flow, and at least one carbonisation reactor (100), in which carbonisation reactor (100) solid secondary fuels (110) are carbonised for generating carbon monoxide (CO) in the co-flow method. The invention is characterised by carbonisation of the solid secondary fuels (110) in the exhaust air of the rotary kiln (120), wherein the air ratio λ has a value of between λ = 0.05 and λ = 0.3, preferably a value of between λ = 0.1 and λ = 0.2, and wherein the air ratio λ is set by mixing the low-oxygen exhaust air of the rotary kiln (120) for sintering cement clinker with an exhaust air of the clinker cooler (130) having an atmospheric oxygen content.
A method for the thermal treatment of clays by: preheating the clay, which is suspended in a carrier gas, in a heat exchanger; thermally treating the clay in a calcination stage operated under chemically oxidizing conditions; subsequently thermally treating the clay in a calcination stage operated under chemically reducing conditions; cooling the clay in a cooling stage operated under chemically reducing conditions; cooling the clay in a cooling stage operating under chemically oxidizing conditions.
The invention relates to a method for operating a plant (100) for producing cement clinker, wherein the plant comprises as plant units (AG), in the direction of gas flow, at least one clinker cooler (110), at least one rotary kiln (120), at least one calciner (130), at least one heat-exchanger line (140), consisting of heat-exchanger cyclones (150, 151, 152), and and at least one device (160) for crushing raw meal and/or cement clinker, and also relates to a corresponding plant (100) for producing cement clinker. The invention envisages enclosing at least one plant unit (AG), whereby the plant unit (AG) is provided with a second covering (200) with respect to the atmosphere, and wherein the enclosure in the form of the covering (200) is subjected to process gas (P) by a compressor (210).
The invention relates to a conveyor device (100) for conveying bulk material (10) for a system (20) for producing cement clinker. The system (20) for producing cement clinker is operated using a recirculation method and/or an oxy-fuel combustion method, and the conveyor device (100) has a connection (110) to the system (20) for producing cement clinker, bulk material (10) to be transported being transferred into the system (20) for producing cement clinker in said connection. According to the invention, the connection (110) between the conveyor device (100) and the system (20) for producing cement clinker has a gas feed (120) for supplying the connection (110) with recirculation gas. The aforementioned design allows a separation between atmospheric air and recirculation gas in the system for producing cement clinker.
The invention relates to a conveyor device (100) for conveying bulk material (10) for a system (20) for producing cement clinker, wherein the system (20) for producing cement clinker operates in the recirculation process and/or in the oxy-fuel process, and wherein the conveyor device (100) has a connection (110) to the system (20) for producing cement clinker, in which bulk material (10) to be transported is transferred into the system (20) for producing cement clinker. According to the invention, the connection (110) between the conveyor device (100) and the system (20) for producing cement clinker has a gas supply (120) for supplying the connection (110) with recirculation gas. This design allows for a separation between atmospheric air and recirculation gas in the system for producing cement clinker.
F27B 1/00 - Shaft or like vertical or substantially vertical furnaces
B65G 17/12 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
C04B 7/36 - Manufacture of hydraulic cements in general
The invention relates to a method for activating clays with high residual moisture, said method having the following steps: introducing moist clay into a drying device (70), comminuting the previously dried clay in a comminution device (130), thermally activating the comminuted clay in an entrained flow reactor (160) or in a fluidised bed reactor in which the comminuted clay is suspended in a hot gas, separating the gas from the entrained flow reactor (160) or the fluidised bed reactor in a separation device (170), and cooling the thermally activated clay in a cooling device (175) using a cooling gas. The invention also relates to a corresponding system. According to the invention, the cooling gas that is heated after cooling of the thermally activated clay is combined with the gas from the entrained flow reactor (160) or fluidised bed reactor, and the combined gases are introduced into the drying system (70), and the drying air, after drying of the clay, is filtered in a dust filter (200), with filtered-out clay being combined with the previously dried clay.
The invention relates to a process for activating clays having high residual moisture, comprising the following steps: feeding wet clay into a device for drying (70), comminuting the previously dried clay in a device for comminuting (130), thermally activating the comminuted clay in an entrained flow reactor (160) or in a fluidized bed reactor in which the comminuted clay is in suspension in a hot gas, removing the gas from the entrained flow reactor (160) or the fluidized bed reactor in a device for removing (170), and cooling the thermally activated clay in a device for cooling (175) with a cooling gas, and to a corresponding plant. The invention provides for unifying the cooling gas, heated after cooling the thermally activated clay, with the gas from the entrained flow reactor (160) or fluidized bed reactor, and introducing the unified gases into the plant for drying (70), and filtering the drying air after drying of the clay in a dust filter (200), where clay removed by filtration is unified with the previously dried clay. Fig. 1
The invention relates to a bar cage sifter (100), comprising at least one motor-driven bar cage (110), a housing (120) for the bar cage (110), wherein the housing (120) has at least one inlet opening (130) for an air flow (L1) with material to be sifted (200) suspended therein which is arranged such that it leads the air flow (L1) from outside to the bar cage (110), and at least one outlet opening (140) for an air flow (L2) with fine material (F) suspended therein which is arranged at a first axial end (E1) outside the axial length (l) of the bar cage (110) and within the diameter (d) of the bar cage (110), and at least one outlet opening (150) for coarse material (G) which is arranged at a second axial end (E2) outside the axial length (l) of the bar cage (110) and outside the diameter (d) of the bar cage (110). The bar cage (110) has an impeller (160) at its second axial end (E2).
B07B 7/083 - Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
The invention relates to a method for producing cement clinker, comprising the following method steps: preheating lime- and silicate-containing raw meal in a preheater, deacidifying the preheated raw meal in a calciner, sintering the deacidified raw meal in a rotary kiln, quenching the raw meal that has been sintered to cement clinker in a cooler, wherein the preheated raw meal is fed into the foot of the calciner, where the raw meal is suspended in the updraft of the exhaust gases flowing out from the rotary kiln into the calciner. According to the invention, it is provided to charge carbide lime into the foot of the calciner (115) as a substitution for raw meal.
09 - Scientific and electric apparatus and instruments
Goods & Services
Software for industrial automation, namely, downloadable factory automation software to integrate manufacturing machine operations, track problems and generate production reports
The invention relates to a closed-circuit grinding system for grinding cement clinker, ore, and/or brittle grinding material, having a first grinding circuit (M1) in which fresh material fed to a first high-pressure roller press (10) is comminuted and disagglomerated, wherein a material diverter (11) returns a first part of the grinding material to the first high-pressure roller press (10), and guides a second part of the grinding material from the high-pressure roller press (10) to a second grinding circuit (M2); and a second grinding circuit (M2), the fresh material supply of which is connected to the material diverter (11) of the first grinding circuit (M1). A static V-sifter (20) forms the entrance of the second grinding circuit (M2), the coarse material outlet (21) of said V-sifter being connected to a second high-pressure roller press (40) and the fine material outlet (22) of said V-sifter being connected to a rod basket sifter (30). The fine material outlet (32) of the rod basket sifter (30) forms the product outlet of the closed-circuit grinding system, and the coarse material outlet (31) of the rod basket sifter (30) joins the coarse material outlet (21) of the static V-sifter (20). The coarse material outlets (21, 32) of the static V-sifter (20) and the rod basket sifter (30) are connected to the grinding material feed (41) of the second high-pressure roller press (40) via a conveyor device (B2), and the grinding material outlet (42) of the second high-pressure roller press (40) is connected to the inlet of the static V-sifter (20).
B02C 21/00 - Disintegrating plant with or without drying of the material
B02C 23/14 - Separating or sorting of material, associated with crushing or disintegrating with more than one separator
B02C 23/12 - Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
A cyclone separator wherein the tapered tip of the conical hollow body faces downwards. The air separator has at least one immersion tube which abuts the conical wall of the conical hollow body and which protrudes upwards within the conical hollow body, the conical hollow body tapered tip which faces downwards being connected to an outlet for fine material. The first cylindrical hollow body is equipped with a rotating rod basket which is enclosed by a static circular conveyor trough for coarse material, the conveyor trough resting against the lower outer circumference without contacting same. The conveyor trough for coarse material is connected to an outlet out of the cylindrical hollow body, and the volume enclosed by the rod basket is fluidically connected to the conical hollow body.
B04C 3/06 - Construction of inlets or outlets to the vortex chamber
B07B 7/083 - Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
B04C 3/00 - Apparatus in which the axial direction of the vortex remains unchanged
B04C 9/00 - Combinations with other devices, e.g. fans
23.
HIGH-PRESSURE ROLLER MILL HAVING VIBRATING LATERAL WALLS
The invention relates to a high-pressure roller mill (100) for comminuting brittle grinding stock (M), having: - at least two adjacent rotating grinding rollers (110, 120) which rotate in opposite directions and form a nip (W) therebetween, wherein a first grinding roller (110) is a fixed roller and a second grinding roller (120) is an idle roller; and - a lateral wall (150, 150') at each of the two ends of the nip (W). According to the invention, each lateral wall (150, 150') has a vibration device (160) which sets the lateral wall (150, 150') into mechanical vibration.
The invention relates to a raw meal delivery device (1) for delivering raw meal (R) into a gas line, such as a riser of a heat exchanger cyclone (112, 113), or into a reactor, such as a calciner (170), of a system (100) for producing cement clinker, having a connection line (2) for connecting a raw meal line (120) to the gas line or to the reactor, an oblique raw meal chute (3), which is arranged inside the connection line (2) and via which raw meal (R) passes from the raw meal line (120) into the gas line or the reactor, a baffle slide (10) being arranged at the foot of the raw meal chute (3) and protruding into the path of the raw meal flowing via the raw meal chute and deflecting the incoming raw meal (R). According to the invention, a substantially convex displacement body is arranged on the baffle slide (10) and lies in the path of the incoming raw meal and disperses the flow of raw meal (R). The displacement body disperses the raw meal (R) on entry into the calciner (170) with the effect of faster calcination. As a result, the performance of the calciner can be improved with small means.
The invention relates to a raw meal delivery device (1) for delivering raw meal (R) into a gas line, such as a riser of a heat exchanger cyclone (112, 113), or into a reactor, such as a calciner (170), of a system (100) for producing cement clinker, having a connection line (2) for connecting a raw meal line (120) to the gas line or to the reactor, an oblique raw meal chute (3), which is arranged inside the connection line (2) and via which raw meal (R) passes from the raw meal line (120) into the gas line or the reactor, a baffle slide (10) being arranged at the foot of the raw meal chute (3) and protruding into the path of the raw meal flowing via the raw meal chute and deflecting the incoming raw meal (R). According to the invention, a substantially convex displacement body is arranged on the baffle slide (10) and lies in the path of the incoming raw meal and disperses the flow of raw meal (R). The displacement body disperses the raw meal (R) on entry into the calciner (170) with the effect of faster calcination. As a result, the performance of the calciner can be improved with small means.
The invention relates to a method for the thermal treatment of clays, said method comprising the following steps: preheating the clay, which is suspended in a carrier gas, in a heat exchanger (150); thermally treating the clay in a calcination stage (160) operated under chemically oxidising conditions; subsequently thermally treating the clay in a calcination stage (17) operated under chemically reducing conditions; cooling the clay in a cooling stage (180) operated under chemically reducing conditions; cooling the clay in a cooling stage (190) operating under chemically oxidising conditions. The alternating sequence of the redox potential of the surroundings leads to a black to grey product instead of a red-brown product, with simultaneously less emission of noxious gas. The method conducted in such a way can be operated in a stable manner.
A high-pressure roll press (100, 200) for high-pressure comminution of milling material (101) in a roll nip (102, 202), having two counter-rotating rolls (103, 103', 203, 203') which between them configure the roll nip (102, 202) through which the milling material (101) to be comminuted passes upon comminution under high pressure and which forms a fracture in the structure of the milling material (101) here in the roll nip (102, 202), and a feeder device (104, 204) which feeds the milling material (101) homogeneously onto the roll nip (102, 202), wherein the volume of the fed milling material (101) configures a compaction zone (105, 205) which reaches from approximately the centre of the roll nip (102, 202) as far as just beyond the centre of the roll nip (102, 202), wherein a device for precompressing the milling material (101) is arranged in the form of a vibration device (110, 210) above the compaction zone (105, 205) and reaches as far as the compaction zone (105, 205), and wherein a metering slide (111, 211) is arranged within the feeder device (104, 204), with the aid of which metering slide (111, 211) the feeding location and the feeding quantity of the milling material (101) onto the roll nip (102, 202) can be set. It is provided according to the invention that the vibration device (110, 210) is connected to the metering slide (111, 211), wherein the metering slide (111, 211) conducts the vibration energy of the vibration device (110, 210) into the compaction zone (105, 205).
The invention relates to a method and a system for activating clay. According to the invention, clay raw material is divided into a coarse product fraction and a fine product fraction; the fine product fraction is preheated in a preheater, and the fine product fraction is then activated in a fluidized bed reactor and/or entrained bed reactor; the activated and heated fine product fraction is combined with the separated and cooled coarse product fraction, whereby the thermally activated clay fraction is quenched; and the combined clay fractions are discharged out of the reactor. The aforementioned method is advantageous in that the activated clay is not oxidized and therefore the clay is not colored reddish. Additionally, the preceding separation process saves a considerable amount of thermal energy, and the quenching process of the thermally activated clay stabilizes the total product against an undesired red coloring.
The invention relates to a method for controlling the damping of the movement of a loose roller (3) of a high-pressure roller press (1), wherein the high-pressure roller press (1) has a hydraulic system (8) which presses the loose roller (3) against a fixed roller (2) and thus maintains a predetermined roller gap pressure in the roller gap (7) between the loose roller (3) and the fixed roller (2) when material to be ground passes through the roller gap (7) between the loose roller (3) and the fixed roller (2). According to the invention, the method is characterised by the use of adaptive damping control which controls the damping of a mechanical oscillating movement of the loose roller. The invention further relates to a high-pressure roller press having adaptive damping control of this kind.
A gas burner for use in low-oxygen environments in which the oxygen concentration is insufficient to ensure complete combustion. The burner includes a central air supply that is annularly surrounded by a gas supply, thereby preventing the fuel from burning out with a delay in places where burn-out is detrimental to a system or plant.
F23D 14/22 - Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
The invention relates to an installation (100, 200) for producing cement clinker (Z) from cement raw meal (R), having a heat-exchanger component (110), consisting of cyclone heat exchangers (111, 112, 113, 114) as preheaters for the cement raw meal (R), having a precalcining stage in the form of a calciner (130), which is supplied with fuel (B) and tertiary air (TL2) from a cement-clinker cooler (150) present in the installation (100, 200), having a sintering stage in the form of a rotary kiln (140), having a cement-clinker cooler (150) connected downstream in terms of material flow, and having a rotary-drum reactor (170) for low-temperature carbonizing and/or burning of secondary fuels (SB), wherein a gas-outlet end (170') of the rotary-drum reactor (170) is connected to the calciner (130) via a line (180) for introducing the gases from the low-temperature carbonizing and/or burning of the secondary fuels (SB) into the calciner (130), and wherein a product-discharge end (170'') of the rotary-drum reactor (170) is connected to a rotary-kiln inlet chamber (120). According to the invention, the gas-outlet end (170') and the product-discharge end (170'') are arranged on opposite sides of the rotary-drum reactor (170). The counterflow of material and gas makes it possible also to use unsorted secondary fuel and even to dispense with a pilot burner for maintaining the low-temperature carbonizing.
The invention relates to a cyclone air separator (100, 200, 300), wherein the tapered tip (125) of the conical hollow body (120) faces downwards. The air separator has at least one immersion tube (130) which abuts the conical wall (126) of the conical hollow body (120) and which protrudes upwards within the conical hollow body (120), said conical hollow body (120) tapered tip (125) which faces downwards being connected to an outlet (127) for fine material (F). The first cylindrical hollow body (110) is equipped with a rotating rod basket (150) which is enclosed by a static circular conveyor trough (152) for coarse material (G), said conveyor trough resting against the lower outer circumference (151) without contacting same. The conveyor trough (152) for coarse material (G) is connected to an outlet (153) out of the cylindrical hollow body (110), and the volume enclosed by the rod basket (150) is fluidically connected to the conical hollow body (120).
B07B 7/083 - Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
B04C 9/00 - Combinations with other devices, e.g. fans
B07B 9/02 - Combinations of similar or different apparatus for separating solids from solids using gas currents
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
The invention relates to a heat exchanger cyclone (1) for exchanging heat between heat between a dust-like to granular material (2) and a gas (3), having an inlet (4) for gas (3), an outlet (5) for gas (3), an inlet (6) for the dust-like to granular material (2), an outlet (7) for the dust-like to granular material (2), wherein the heat exchanger cyclone further has a cylindrical partition space (8) to which there adjoins, below, a conical partition space (9), wherein the cylindrical partition space (8) and the conical partition space (9) transition one into the other, and wherein a dip tube (10) for the gas (3) projects into the common partition space (8, 9). According to the invention, it is provided that the inlet (6) for the dust-like to granular material (2) as the second inlet is separated from the inlet (4) for the gas as the first inlet.
The invention relates to a rising pipe separator (1), having a rising pipe (5) for pneumatically transporting granular material (15) suspended in conveying air (10), wherein the rising pipe (5) has a vertical conveying direction component, a swirler (20) which is arranged in the rising pipe (5) and which imparts a swirl to the conveying air (10), and an immersion pipe (25) which is arranged above the swirler (20) and which extends the air path for the conveying air (10), wherein an annular gap (30) is provided between the rising pipe (5) and the immersion pipe (25), and coarse-grained material (35) is separated from the conveying air (10) flowing into the immersion pipe (25) by means of the annular gap, said coarse-grained material being centrifuged outwards in a radial direction with respect to the conveying direction of the conveying air (10) by means of the swirl of the conveying air (10). The invention also relates to a circular grinding system which has such a separator (1).
B07B 7/086 - Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by the winding course of the gas stream
B07B 7/083 - Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
The invention relates to a separator (100, 300, 400, 500) for separating granular material to be separated into at least one fraction consisting of fine material and one fraction consisting of coarse material, comprising a housing (G), in which a stepped cascade (108, 108') that can be permeated by separating gas (5) is installed at an angle (α) deviating from the horizontal, at least one inflow channel (103) leading into the housing (G) for separating gas, and at least one outflow channel (105a, 105a', 105b, 105b') leading out of the housing (G) for separating gas loaded with fine material, wherein, opposite the stepped cascade (108, 108') and separated therefrom by a separating zone (SZ), separating slats (107, 107') are arranged one above the other in a venetian blind-like manner, and wherein an inlet opening (102, 102', 102'', 102''') is arranged above the separating zone (SZ) on the top of the housing (G) and a discharge opening (104, 104') for the coarse material is arranged below the separating zone (SZ) on the bottom of the housing (G). According to the invention, it is provided that at least two individual separators (100', 100'', 100''', 100''''), which are arranged opposite one another, are pneumatically connected to one another via a common pressure compensation chamber (DAK), by which the separating gas flows into the respective inflow channels (103', 103'') of the at least two individual separators (100', 100'', 100''', 100''''). As a result, pressure fluctuations between two individual separators can be prevented and overall height can be saved.
The invention relates to a feeding device (1) for feeding brittle material to be ground (2) to a roller gap (3) formed between two rollers (6, 12) of a roller press (4). According to the invention, the lower bounding surface (16) of the metering body (8) protrudes at each portion (18) located at the outside with respect to the longitudinal extent of the roller gap (3), such that in the region of said two outside portions (18) the intermediate space (19) between the metering body (8) and the roller surface of the first roller (6) is narrower than the intermediate space (17) between the metering body (8) and the roller surface of the first roller (6) in the region of the central portion (15) of the lower bounding surface (16) of the metering body (8), which central portion is located between the two outside portions (18).
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Machines and parts therefor for the cement, coal and metal
industries; crushing machines and parts therefor, in
particular cone crushers and roller crushers for the cement,
coal and metal industry; mills and parts therefor, in
particular roller mills, hammer mills, ball mills, roller
plate mills and vertical mills for the cement, coal and
metal industry; presses, in particular roller presses and
briquetting machines; millstones and ring bindings with and
without hard bodies for mill rollers or press rollers;
mechanical installations and parts therefor for separating
of fine bulk materials, in particular wind, cascade and rod
basket sifters; installations for crushing bulk material,
namely circulatory milling installations; none of the
aforesaid goods being welding machines, electric, and/or
cutting machines and/or parts therefor. Factory construction, namely cement factories, coal and
metalworks; construction, installation, assembly,
conversion, commissioning, repair, maintenance and servicing
of cement, coal and metallurgical installations; building
contractor services, namely technical preparation of
building projects, namely in the field of construction of
industrial installations. Engineering, namely planning, construction, selection,
composition and dimensioning of machine installation parts
for the cement, coal and metal industries, and design and
programming of process automation installations; technical
consultancy and project studies in the field of plant
engineering, namely in the field of the cement, coal and
metal industries; technical, geological and scientific
surveys, namely in the field of the cement, coal and metal
industries; land surveying; physics (research), namely
energy calculations and simulations of industrial processes,
and calculation and simulations of mechanical distribution
of energy in static and dynamic installation parts; chemical
laboratory services, namely analysis of building materials;
conducting of technical tests, namely conducting of stone
crushing and dust classification; geological and scientific
surveys; research in the field of environmental protection,
in the field of chemistry, technology and mechanical
engineering; none of the aforesaid services in the field of
welding and/or cutting; structural and civil engineering.
38.
SYSTEM AND BURNER LANCE FOR ADDITIONALLY PRODUCING WHITE CEMENT
The invention relates to a system for producing a cement clinker for the additional production of white cement, having a rotary kiln (15) for sintering lime-containing and silicate-containing raw meal (35) and optionally additional oxide in order to form the cement clinker (45), wherein a burner lance (25) is provided on the rotary kiln head (40) of the rotary kiln (15) in order to generate the necessary sintering temperature in the rotary kiln (15), and the burner lance (25) reaches into the rotary kiln (15). The system also has at least one line (110) for conducting cooling water (110) into the rotary kiln (15) in order to quench the sintered cement clinker (45) still in the rotary kiln (15). According to the invention, the burner lance (25) has at least one line (110) for conducting cooling water, and the line (110) for conducting cooling water opens in the region between the burner opening and the end of the rotary kiln head (40) and sprays cooling water onto the sintered cement clinker (45). By integrating the burner lance with the cooling water line, the burner lance is cooled and simultaneously the reductive conditions in the rotary kiln can be controlled more easily upon quenching.
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Machines and parts therefor for the cement, coal and metal industries, crushing machines and parts therefor, in particular cone crushers and roller crushers for the cement, coal and metal industry, mills and parts therefor, in particular roller mills, hammer mills, ball mills, roller plate mills and vertical mills for the cement, coal and metal industry, presses, in particular roller presses and briquetting machines, millstones and ring bindings with and without hard bodies for mill rollers or press rollers, mechanical installations and parts therefor for separating of fine bulk materials, in particular wind, cascade and rod basket sifters, installations for crushing bulk material, namely circulatory milling installations, none of the aforesaid goods being welding machines, electric, and cutting machines and parts therefor. (1) Factory construction, namely cement factories, coal and metalworks; construction, installation, assembly, conversion, commissioning, repair, maintenance and servicing of cement, coal and metallurgical installations; building contractor services, namely construction site preparation in the fields of cement, coal and metal industries.
(2) Engineering, namely planning, construction, selection, composition and dimensioning of machine installation parts for the cement, coal and metal industries, and design and programming of process automation installations, technical consultancy and project studies in the field of plant engineering, namely in the field of the cement, coal and metal industries, technical, geological and scientific surveys, namely in the field of the cement, coal and metal industries, land surveying, physics (research), namely energy calculations and simulations of industrial processes, and calculation and simulations of mechanical distribution of energy in static and dynamic installation parts, chemical laboratory services, namely analysis of building materials, conducting of technical tests, namely conducting of stone crushing and dust classification, geological and scientific surveys, research in the field of environmental protection, in the field of chemistry, technology and mechanical engineering, none of the aforesaid services in the field of welding and cutting; structural and civil engineering.
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Crushing, milling, pressing, milling and sifting machines for industrial purposes and parts therefor for the cement, coal and metal industries; crushing machines and parts therefor, in particular cone crushers and roller crushers for the cement, coal and metal industries; milling machines and parts therefor, in particular roller mills, hammer mills, ball mills, roller plate mills and vertical mills for the cement, coal and metal industries; industrial machine presses, in particular roller presses and briquetting machines; machine parts, namely, millstones and ring bindings with and without hard bodies for mill rollers or press rollers; mechanical installations in the nature of sifting machines and parts therefor for separating of fine bulk materials, in particular wind, cascade and rod basket sifters; installations for crushing bulk material, namely, circulatory milling machines; none of the aforesaid goods being welding machines, electric, and/or cutting machines and/or parts therefor Factory construction, namely, construction of cement, coal and metalworks factories; construction services, namely, installation, assembly, conversion, commissioning, repair, maintenance and servicing of cement, coal and metallurgical installations; building contractor services, namely, technical preparation of building projects, namely, in the field of construction of industrial installations Engineering, namely, planning, construction, selection, composition and dimensioning of machine installation parts for the cement, coal and metal industries, and design and programming of process automation installations; technical consultancy and technical project feasibility studies in the field of plant engineering, namely, in the field of the cement, coal and metal industries; technical, geological and scientific surveys, namely, in the field of the cement, coal and metal industries; land surveying; physics research, namely, energy calculations and simulations of industrial processes, and calculation and simulations of mechanical distribution of energy in static and dynamic installation parts; chemical laboratory services, namely, analysis of building materials; conducting of technical tests, namely, conducting of stone crushing and dust classification testing; geological and scientific surveys; research in the field of environmental protection, in the field of chemistry, cement, coal and metal technology and mechanical engineering; none of the aforesaid services in the field of welding and/or cutting; structural and civil engineering
A control device for a technical process, having at least two devices for detecting a respective input signal and at least one manipulated variable output device. The output device forms a difference between a reference variable and a controlled variable and ascertains a manipulated variable therefrom. The control device additionally has at least one internal signal processing system for influencing the time response and damping behavior of a control loop formed by the control device and technical process. At least two filter devices provide signal processing. A first filter device interacts with the process such that the control loop time response can be influenced by a filter device property change, and at least one amplification element interacts such that the control loop damping behavior can be influenced by an amplification element amplification factor change and such that the second filter device and the I element can be activated individually.
G05B 11/42 - Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
42.
SEPARATOR HAVING SEPARATING SLATS WITH WING PROFILE
The invention relates to a separator (1, 1') for separating granular material (SG) to be separated into at least one fraction consisting of fine material (2) and one fraction consisting of coarse material (3), having a housing (4) in which a stepped cascade (6) that can be permeated by separating gas (5) is installed at an angle (α) deviating from the vertical, at least one inflow channel (7) leading into the housing (4) for separating gas (5), and at least one outflow channel (8) leading out of the housing (4) for separating gas (5’) loaded with fine material (2), wherein opposite the stepped cascade (6) and separated therefrom by a separating zone (9), separating slats (10) are arranged one above the other in a venetian-blind-like manner, and wherein above the separating zone (9) an inlet opening (11) for material to be separated is arranged on the top (4') of the housing (4) and below the separating zone (9) a discharge opening (12) for the coarse material (3) is arranged on the bottom (4'') of the housing (4). According to the invention, the separating slats (10) have a wing profile. As a result of the wing profile, on the rear side, with respect to the separating gas flow, there is a laminar flow of the separating gas, which increases the efficiency of the separator (1, 1').
A rotor for a device for disintegrating feed material, comprising a drive shaft, a plurality of rotor disks mounted on the drive shaft, and disintegration tools arranged in the region of the outer circumference of the rotor disks. A holding flange is provided for each rotor disk for connecting the rotor disk to the drive shaft, wherein the holding flange is permanently connected to the drive shaft and detachably connected to the rotor disk. Devices for disintegrating feed material, in particular impact hammer mills, may thus be operated with a rotor, in which the risk of a shaking out and a lateral wandering of the rotor disks is largely eliminated.
B02C 13/04 - Disintegrating by mills having rotary beater elements with horizontal rotor shaft with beaters hinged to the rotorHammer mills
B02C 13/16 - Disintegrating by mills having rotary beater elements with vertical rotor shaft, e.g. combined with sifting devices with beaters hinged to the rotor
B02C 13/26 - Disintegrating by mills having rotary beater elements Details
B02C 13/28 - Shape or construction of beater elements
The invention relates to a control device (1) for controlling a technical process (2), having at least two devices for detecting a respective input signal and at least one device for outputting a manipulated variable (u), said output device internally forming a difference between a reference variable (w), as the first input signal, and a controlled variable (y), as the second input signal, and ascertaining a manipulated variable (u) therefrom. The control device additionally has at least one internal signal processing system for influencing the time response and the damping behavior of the control loop formed by the combination of the control device (1) and the technical process (2). According to the invention, at least two filter devices are provided for processing a signal, wherein a first filter device (4) interacts with the process (2) such that the time response of the control loop formed by the combination of the control device (1) and the technical process (2) can be influenced by a change in the property of the filter device (4), and at least one amplification element (5) is provided which interacts with the process (2) such that the damping behavior of the control loop formed by the control device (1) and the process (2) can be influenced by a change in the amplification factor of the application element (5) and such that a second filter device (7) and the I element (6) can be activated individually.
G05B 11/42 - Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
45.
Method and plant for denitrifying bypass gases in a multi-stage system of mixing chambers in a plant for producing cement clinker
A method and a corresponding plant for denitrifying bypass exhaust gases in a cement clinker production plant. Raw meal is sintered in a rotary kiln and deacidified in a calciner. A rotary kiln inlet chamber is connected to the calciner directly or by a riser duct. Bypass exhaust gas is drawn off near the inlet chamber. This exhaust gas is guided into a first mixing chamber, in which the exhaust gas is cooled to between 800 and 950 degrees C., then the exhaust gas is guided through a reaction pipeline segment, wherein the dwell time is between 0.5 and 3 seconds and ammonia, aqueous ammonia solution, or ammonia-releasing substances are injected for denitrification. Then the exhaust gas is guided into a second mixing chamber, in which the exhaust gas is cooled to between 150 250 degrees C. Then the exhaust gas is guided to a filter for dust removal.
The invention relates to a ship circulating grinding plant (1), comprising at least one high-pressure roller press (5), at least a first classifier (8), at least a second post-classifier (11), wherein grinding material flows from the high-pressure roller press (5) into the first, at least one classifier (9) and the middle-grade material separated in the first, at least one classifier (5) flows into the second, at least one post-classifier (11), and wherein coarse material flows from the first, at least one classifier (5) back into the at least one high-pressure roller press (5) via a bucket conveyor (13). According to the invention, it is provided that the first, at least one classifier (8) is arranged below the at least one high-pressure roller press (5), and that the second, at least one post-classifier (11) is arranged adjacent to or at a height above the at least one high-pressure roller press (5), so that the entire circulating grinding plant fits into and is arranged in a section (15) of a marine vessel.
B02C 23/12 - Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
B02C 23/14 - Separating or sorting of material, associated with crushing or disintegrating with more than one separator
E02F 7/06 - Delivery chutes or screening plants mounted on a dredger
47.
PROCESS FOR ACTIVATING CLAYS AS ADDITIVE FOR CONCRETE
The invention relates to a process for activating clays for producing an additive for concrete and to a corresponding system. According to the invention, it is provided that the activation is carried out in a co-current reactor. The basic design is similar to that of a calcinator for the production of cement clinker so that, although the process parameters have to be adapted to a great extent, the experience of the construction of calcinators may be applied.
The invention relates to the use of desert sand as an aggregate for concrete, to a method for producing an aggregate for concrete, and to an aggregate for concrete. According to the invention, said aggregate was obtained by fracturing desert sand in a high-pressure roller press, in the case of which the desert sand is fractured in bulk by pressure loading and agglomerated in a first stage and then the agglomerates are destroyed by further mechanical loading in a second stage, wherein the pressure loading in the first stage is performed by means of one-time pressing between two surfaces at a pressure of over 50 MPa. Aggregate produced in such a way, when added to concrete, leads to a considerably higher concrete strength than when untreated desert sand is added.
The invention relates to a system (100, 200) for producing cement clinker, having at least one rotary kiln (113) for sintering the cement clinker from pre-calcinated raw meal (101), at least one heat exchanger (112) which is connected downstream of the rotary kiln (113) in the gas flow direction for recuperating process heat from the at least one rotary kiln (113), at least one entrained flow calcinator (102) for pre-calcinating (deacidifying) the raw meal (101), and at least one clinker cooler (105) which is connected downstream of the rotary kiln (113) in the material flow direction for cooling the sintered cement clinker, wherein a line is provided for conducting the cooler exhaust air (104) for recuperating heat into the system (100, 200). According to the invention, the entrained-flow calcinator (102) is arranged upstream of the heat exchanger (112) in the material flow direction. The aforementioned assembly allows the system to be operated with high excess heat which can be coupled out in order to generate electric energy.
The invention relates to a grate plate (1) for use in a grate cooler for hot bulk material, comprising a first working region (2) which is alternatingly covered by a further grate plate (1) during use of the grate plate (1) in a grate cooler, and which has at least one bag (5) for holding bulk material as an autogenous wear protection layer, and comprising a second working region (3) which is not covered by a further grate plate (1) during use of the grate plate (1), and which has at least one bag (5) for holding bulk material as an autogenous wear protection layer and having at least one opening (6) leading to the underside of the grate plate (1) for the introduction of cooling air. According to the invention, the height (8) of the bags (5) in the covering region (2) is smaller than the height (7) of the bags (5) in the covering-free region (3), and the base of the bags (5) in the covering region (2) is respectively formed by multiple segments (9), the surfaces of which function as contact surfaces for bulk material and between which gap-like cooling air channels (10) are formed, wherein the openings of the cooling air channels (10) provided between the upper sides of the segments (9) are each oriented at a certain angle to the vertical, such that a respective acute angle occurs between the conveying direction and the direction of the cooling air flow via these openings.
The invention relates to a classifying device (1) for classifying granular material (2) to be classified, having a first V-shaped static cascade classifier (5), wherein the first cascade classifier (5) has a classifying air inlet (8), a feed opening (3) for the granular material (2) to be classified, a discharge opening (11) for a separated-out coarse-material fraction (10) and also an outlet (18) for a volume flow (12) consisting of classifying air (9) and a first drawn-off classified-material fraction, and a second V-shaped static cascade classifier (14), wherein the second cascade classifier (14) has an inlet (19) for a classifying air volume flow, a discharge opening (20) for a separated-out coarser classified-material fraction (product A) and an outlet (23) for a volume flow (22) consisting of classifying air (9) and a second drawn-off, finer classified-material fraction. According to the invention, it is provided in particular that the second cascade classifier (14) is pneumatically connected to the first cascade classifier (5) and is arranged downstream thereof, wherein the classified-air volume flow of the second cascade classifier (14) is provided by the volume flow (12) from the first cascade classifier (5). Also provided is a circulating grinding plant in which such a classifying device (1) is arranged.
The invention relates to a rotor (1) for a device for disintegrating feed material, comprising a drive shaft (4), a plurality of rotor disks (2) mounted on the drive shaft (4), and disintegration tools arranged in the region of the outer circumference of the rotor disks (2). According to the invention, a holding flange (5) is provided for each rotor disk (2) for connecting the rotor disk (2) to the drive shaft (4), wherein the holding flange (5) is permanently connected to the drive shaft (4) and detachably connected to the rotor disk (2). Devices for disintegrating feed material, in particular impact hammer mills, may thus be operated with a rotor (1), in which the risk of a shaking out and a lateral wandering of the rotor disks (2) is largely eliminated.
B02C 13/04 - Disintegrating by mills having rotary beater elements with horizontal rotor shaft with beaters hinged to the rotorHammer mills
B02C 13/16 - Disintegrating by mills having rotary beater elements with vertical rotor shaft, e.g. combined with sifting devices with beaters hinged to the rotor
B02C 13/26 - Disintegrating by mills having rotary beater elements Details
09 - Scientific and electric apparatus and instruments
Goods & Services
Measuring, regulating, monitoring, signalling, display and registering apparatus, and electrotechnical and electronic apparatus and installations assembled therefrom for operations monitoring, control, regulation, automation and simulation of process installations, in particular process installations for the primary industry; Data processing programs relating thereto on data carriers.
54.
METHOD AND APPARATUS FOR THE TWO-STAGE GRINDING OF FRESH STOCK
The invention relates to a method for grinding fresh stock (1), having the steps of comminuting the fresh stock (1) in the roller gap (6) of a first roller press (4), to give ground grinding stock, dividing the ground grinding stock by means of adjustable dividing means (9, 31) of a dividing device (8) into a first part stream (12) and a second part stream (13) of ground grinding stock in a variably adjustable ratio and comminuting the ground grinding stock of the first part stream (12) in a second roller press (14). The invention also relates to a corresponding apparatus for grinding fresh stock (1). The invention provides for dividing the ground grinding stock issuing from the first roller press (4) by means of the dividing means (9, 31) into an intermediate stream (10) consisting of ground grinding stock issuing from an intermediate roller gap region (32), and into two peripheral streams (11a, 11b) each consisting of ground grinding stock issuing from one of the two roller gap peripheral regions (33a, 33b), wherein the two peripheral streams (11a, 11b) are combined to form the first part stream (12) and the intermediate stream (10) forms the second part stream (13), and conveying the second part stream (13) from the dividing device (8) into at least one bypass line (18), passing the second roller press (14).
Denitrifying bypass exhaust gases in a cement clinker producing plant. The plant comprises a rotary kiln connected to a calciner for the deacidification of raw material or to a rotary kiln riser shaft via a rotary kiln inlet chamber, and the bypass exhaust gas being drawn off in the region of the rotary kiln inlet chamber. The method comprises: cooling the bypass gas to between 260 C and 400 C in a cooling device, injecting an ammonia-, urea-, and/or ammonium-containing substance into the cooled bypass gas, introducing the cooled and mixed bypass gas into a ceramic filter system to filter out any halide and sulfate of the alkali metals and alkaline-earth metals precipitated during cooling the gas, and any nitrogen not reacted by the injected substances is chemically selectively reduced over a catalytic converter which is located in or directly downstream of the ceramic filter system.
The invention relates to a gas burner for use in low-oxygen environments in which the oxygen concentration is insufficient to ensure complete combustion. According to the invention, the burner includes a central air supply (7) that is annularly surrounded by a gas supply (4), thereby preventing the fuel from burning out with a delay in places where burn-out is detrimental to a system or plant.
F23D 14/22 - Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
The invention relates to a plant for production of cement clinker from raw meal, having a calciner for deacidification of the raw meal and a rotary furnace for sintering of the deacidified raw meal to give cement clinker, wherein the deacidified raw meal, after passing through the calciner, flows through a cyclone preheating stage into the rotary furnace, and wherein a reactor connected upstream of the calciner on the flow path of the offgas from the rotary furnace to the calciner is provided, to which an inlet for the offgas from the rotary furnace leads, and the invention relates to a corresponding method of operating such a plant having a calciner and a rotary furnace, wherein the deacidified raw meal, after passing through the calciner, flows through a cyclone preheating stage into the rotary furnace, conducting the offgases from the rotary furnace into a reactor connected upstream of the calciner on the flow path of the offgases from the rotary furnace, wherein fuel is added to the reactor in a superstoichiometric amount in relation to the residence time of the offgases in the reactor, such that carbon dioxide present in the offgases is reduced to carbon monoxide. It is envisaged in accordance with the invention that at least one input air conduit for the supply of input air, preferably coming from a tertiary air conduit, is provided at at least one point in the reactor. In this way, it is possible to better control the Boudouard reaction that takes place therein.
The invention relates to a method and to a corresponding plant for denitrifying bypass exhaust gases (9) in a plant for producing cement clinker, wherein the plant has a rotary kiln (2) for sintering raw meal (3) and a calciner (7) for deacidifying the raw meal (3), the rotary kiln (2) has a rotary kiln inlet chamber (5), which is connected to the calciner (7) directly or by means of a kiln riser duct (6), and the bypass exhaust gas (9) is drawn off in the region of the rotary kiln inlet chamber (5). According to the invention, the bypass exhaust gas (9) is guided into a first mixing chamber (10), in which the bypass exhaust gas is cooled down to a temperature between 800 °C and 950 °C, then the bypass exhaust gas (9) is guided through a reaction segment (15) arranged in a pipeline (13), wherein the dwell time in the reaction segment (15) is between 0.5 s and 3 s and ammonia, aqueous ammonia solution, or ammonia-releasing substances (14) are injected for denitrification according to the method of selective non-catalytic reduction (SNCR), then the bypass exhaust gas (9) is guided into a second mixing chamber (16), in which the bypass exhaust gas is cooled to a temperature between 150 °C and 250 °C, and then the bypass exhaust gas (9) is guided to at least one filter (17) for dust removal.
The invention relates to a grinding roller (2) of a high-pressure roller press, comprising a shaft (1) and a wear-resistant strap (3), wherein the strap (3) is frictionally shrunk onto the shaft (1). The invention further relates to a method for separating a strap (3) and a shaft (1) in the case of such a grinding roller (2) and to a method for frictionally connecting a strap (3) and a shaft (1) in order to form such a grinding roller (2). According to the invention, the shaft (1) has a plurality of cooling bores (5) passing through in the axial direction for gaseous or liquid coolant to flow through said cooling bores, wherein the cooling bores (5) are arranged in the outer region of the shaft (1). Furthermore, in order to separate the strap (3) from the shaft (1), according to the invention, the strap (3) is heated by supplying heat from outside, the shaft (1) is simultaneously cooled by means of a coolant flowing through the cooling bores (5), and the strap (3) is pulled off from the shaft (1) in the longitudinal direction.
The invention relates to a method for operating a closed circuit grinding plant for grinding fresh material (1), comprising the steps of: crushing the fresh material (1) to form ground material (5) in a first grinding device (3) realised as a roller press; dividing the ground material (5) into a first and second sub-stream (7, 8) in a variably adjustable ratio; pre-sifting the first sub-stream (7) in a static sifting device (10) arranged under the first grinding device (3), wherein sifted-out material (13) and separated coarse material (15) are discharged; pneumatic transporting of the sifted-out material (13) to a dynamic sifting device (18) arranged above the first grinding device (3); post-sifting of the sifted-out material (13), wherein grit (20) and finished material (9) are discharged; and recirculating of the grit (20) to the first grinding device (3). The invention also relates to a corresponding closed-circuit grinding plant. According to the invention, the separated coarse material (15) is recirculated to the first grinding device (3), the ground material of the second sub-stream (8) is crushed in a second grinding device (25) to form reground material (27) and the reground material (27) is pre-sifted in the static sifter (10).
B02C 21/00 - Disintegrating plant with or without drying of the material
B02C 23/12 - Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
B02C 23/14 - Separating or sorting of material, associated with crushing or disintegrating with more than one separator
The invention relates to an immersion pipe (1) for directing a gas stream out of a cyclone separator, said pipe having a cylindrical wall (2) composed of segments (3), wherein the segments (3) are arranged in at least two annular rows, an annular device arranged at the upper end of the immersion pipe (1) and formed by suspension components (5, 7) for suspension of the immersion pipe (1), and an annular lower edge arranged at the lower end and formed by end components (8, 9). According to the invention each segment (3) has a curvature in the horizontal extent and a flattened S shape in the vertical section in such a way as to overlap with the segments (3) lying below. Furthermore, each segment (3) has two recesses (16) and has on the upper edge an inwardly projecting plate section (18) having two upwardly directed projecting elements (19) in such a way that the plate section (18) is fitted into a respective recess (16) of the two segments (3) located above the plate section, and each segment (3) has on the inner face, above the recesses (16), a respective extension element (17) in such a way that by a locking effect on the respective projecting element (19) the extension element (17) prevents the connected segment (3) from sliding out of the recess (16).
B04C 5/13 - Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamberDischarge from vortex finder otherwise than at the top of the cycloneDevices for controlling the overflow
62.
METHOD FOR EQUALIZING THE GAS PRESSURE IN A HOPPER AND HOPPER
The invention relates to a method for equalizing the gas pressure in a hopper (1) for removing a fine-grained, fluidizable bulk material from a silo, and to a corresponding hopper (1), wherein the hopper (1) has at least one pressure-relieving insert (3) or at least one internal hopper (14). The invention provides for reducing the pressure difference between the gas pressure within the flowing bulk material and the gas pressure in the outer surroundings or in the upper space of the silo by means of at least one pressure-equalizing line (5) and injection of compressed gas, preferably compressed air, into the internal space of the hopper (1) through at least one nozzle (8). This brings about quicker and more even pressure equalization between the gas pressure in the bulk material and the ambient pressure, which prevents fluidizing and discharge of the bulk material.
B65D 88/28 - Construction or shape of discharge section
B65D 88/54 - Large containers characterised by means facilitating filling or emptying
B65G 53/58 - Devices for accelerating or decelerating flow of the materialsUse of pressure generators
B65G 53/66 - Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
The invention relates to a roller press (1) for comminuting brittle material to be milled, having at least two milling rollers (2, 3), a machine frame (4) which has at least one upper flange (5) and/or at least one contiguous upper frame element (6), and has at least one lower flange (7) and/or at least one contiguous lower frame element (8), at least one frame head (9) for stabilizing the at least one upper flange (5) or the at least one contiguous, upper frame element (6) when the roller press (1) is open on the head side in order to change the milling rollers (2, 3), wherein the frame head (9) consists of an upper cross member (10) which is supported by way of at least two lateral supports (11, 12) and is connected to the at least one upper flange (5) or the at least one contiguous, upper frame element (6). It is provided according to the invention that the machine frame (4) is closed by way of at least one head piece (13, 14) which can be released completely from the machine frame (4) and the frame head (9).
B02C 4/02 - Crushing or disintegrating by roller mills with two or more rollers
B02C 4/28 - Crushing or disintegrating by roller mills Details
B30B 3/04 - Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
A plant for producing cement clinker, comprising as viewed in the direction of materials flow, a heat exchanger to preheat raw meal, a downstream calciner to calcine the raw meal, a rotary kiln to sinter the calcined raw meal, and a clinker cooler to cool the sintered cement clinker. A combustion device which carbonizes, pyrolysis or burns difficult fuels, is embodied as a pot reactor or gooseneck reactor in an inverted U-shape, and is positioned upstream of the calciner on the flow path of the exhaust gases from the rotary kiln to the calciner, and has a gas outlet that opens out above a tertiary-air line of the clinker cooler into the calciner. As a result, it becomes possible to burn fuel which is lumpy and/or has poor ignitability, and the gases from incomplete combustion in the reactor are available in the calciner in gaseous form for further combustion.
A process for producing a casing for a roller press for subjecting particulate matter to be ground to high pressure treatment, the casing having a profiling defined by profile comb, wherein the process includes the steps of casting a cylindrical hollow body and introducing axial longitudinal grooves onto the surface of the cylindrical hollow body. The material for casting is of a particular composition, where that composition includes, among other components, between 0.0012% and 0.0027%, by weight, of phosphorus (P).
B22D 19/16 - Casting in, on, or around, objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
B22D 13/00 - Centrifugal castingCasting by using centrifugal force
B30B 3/00 - Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
B30B 11/18 - Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses using profiled rollers
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
C22C 37/10 - Cast-iron alloys containing aluminium or silicon
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
C22C 38/56 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
B22D 25/02 - Special casting characterised by the nature of the product by its peculiarity of shapeSpecial casting characterised by the nature of the product of works of art
B22D 13/02 - Centrifugal castingCasting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
The invention relates to a method for using the waste heat of a plant for producing cement and to a corresponding plant, wherein the plant has a heat exchanger (1), consisting of a series of cyclones (1a, 1b, 2, 3), at least one calciner (4, 5), a rotary tubular kiln (7), a clinker cooler (8) and a tertiary air duct (9) for carrying heated-up cooler air away from the clinker cooler (8) into the calciner (4), and wherein process gas is removed at the outlet of the calciner (5) and/or at the gas-side outlet of the first cyclone (1b) and/or at the rotary kiln inlet chamber (6), is fed to a first steam boiler (bypass boiler) (11) for the heating of steam for the purpose of subsequent conversion of heat into electrical energy and is then returned into the second or third cyclone (1a, 2) of the heat exchanger. The invention provides a removal of hot tertiary air from the tertiary air duct (9), a feeding of the tertiary air into a second steam boiler (tertiary air boiler) (20) for heating steam, and a feeding of the heated steam from the tertiary air boiler (20) to the bypass boiler (11) for further heating.
The invention relates to a roller press for high-pressure treatment of granular material to be ground (1), having two rotatably-mounted rollers (2, 3) separated from each other by a roller gap (4) and rotating oppositely to each other, and for each roller a device (5, 6) arranged on respectively one of the two sides of the roller press defined by corresponding front faces of the two rollers (2, 3) for lateral delimitation of and sealing of the roller gap (4). The invention provides that each of the two devices (5, 6) for lateral delimitation of and sealing of the roller gap is defined as a rotatable disk (5, 6) which is not connected to the rollers, wherein the axis of rotation of the rotatable disk (5, 6) runs parallel to the longitudinal direction of the roller gap (4) defined by the axis of rotation of the rollers (2, 3) and wherein the disk (5, 6) overlaps the front faces of the two rollers (2, 3) in a region of the elongated roller gap (4).
The invention relates to a grate plate (1) for use in a bulk material cooler for hot bulk material (3), such as for example hot cement clinker, having a working region with at least one pocket (2) for holding bulk material (3) as an autogenic wear protection layer, at least one opening (4) which leads to the underside (5) of the grate plate (1) for supplying cooling air (6), wherein the working region has, when used in a grate cooler, a region which is alternately covered by a further grate plate (1). The invention provides that the area alternately covered by a further grate plate (1) is also covered for the most part by the at least one pocket (2) for holding bulk material (3) as an autogenic wear protection layer, and that the at least one opening (4) which leads to the underside (5) of the grate plate (1) for supplying cooling air (6) has a clear opening which has a diameter of at least 7 mm or more. By this means, the grate plate has a low air resistance and the air resistance varies less during use.
The invention relates to a roller (1) for a roller press for the high-pressure treatment of granular grinding stock, said roller comprising at least one shaft (3), a main roller body (2), a roller surface (4) and an anti-wear layer (5) for protecting the roller surface (4) against wear. According to the invention, the anti-wear layer (5) consists of a wear-resistant casting compound provided on the roller surface (4). Thus protection against wear, which is cost-effective in terms of investment and maintenance costs, for the roller (1) and an economic operation of a roller press equipped with rollers (1) of this type can be achieved.
The invention relates to a rolling press (1) for comminuting brittle grinding material, comprising a first grinding roll (22) and a second grinding roll (23). At least one grinding roll is an idle roll (23) which is movably mounted in a machine frame (24), and at least one grinding roll (22, 23) has an electric drive. According to the invention, the electric drive (28, 28', 29, 29') of the at least one grinding roll (22, 23) is located on both sides, at both ends of the roll(s).
The invention relates to a method for cooling and comminuting hot cement clinker (1) in a cooler (3) and to a corresponding device, wherein the cooler (3) has at least one inlet region (5) for receiving the hot cement clinker (1), a recuperation region (7), a final cooling region (17) having at least one device (18a, 18b) for cooling the cement clinker (1), at least one opening (10) for blowing cooling air (11) into the recuperation region (7), a tertiary air line (13) for conducting away heated cooling air (11), an outlet region (20) for discharging cooled cement clinker (1), and at least one conveying means (6a, 6b) for transporting the cement clinker (1) through the cooler (3), the hot cement clinker (1) is tipped into the cooler (3) through an input opening (4) into the inlet region (5), the cement clinker (1) is transported by the conveying means (6a, 6b) from the inlet region (5), through the recuperation region (7) and the final cooling region (17), to the outlet region (20), and ambient air (9) is blown as cooling air (11) into the recuperation region (7) through the at least one opening (10). According to the invention, comminution of the cement clinker (1) by at least one device (16a, 16b), arranged in the recuperation region (7), for comminuting cement clinker (1) is provided.
B02C 4/00 - Crushing or disintegrating by roller mills
72.
METHOD AND SYSTEM FOR THE DENITRIFICATION OF FLUE GASES BY MEANS OF SNCR (SELECTIVE NON-CATALYTIC REDUCTION) AND DOWNSTREAM CATALYST FOR AMMONIA DECOMPOSITION
The invention relates to a method for the denitrification of flue gases (1) and to a corresponding system, wherein the flue gases (1), which are generated in a rotary kiln (2) for sintering cement clinker, are conveyed to a calcining zone (3) for the deacidification of raw cement meal. Aqueous ammonia solution, ammonia (NH3), or ammonia-releasing substances (6) for denitrifying the flue gases (1) are injected into the calcining zone (3) according to the method of selective non-catalytic reduction (SNCR), and the flue gas stream, together with an ammonia slip (6) generated during the denitrification, is passed through a heat exchanger (9) and through at least one dedusting device (10). According to the invention, the flue gas stream is guided from the heat exchanger (9) through a heat exchanger exhaust gas line (11) via a catalyst (12) for the decomposition of excess ammonia (6) with residues of nitrogen oxide contained in the flue gas (1) in accordance with a method of selective catalytic reduction (SCR), wherein the catalyst (12) is arranged in a reactor (13) provided in the heat exchanger exhaust gas line (11), and is no larger than is required for a sufficient decomposition of the ammonia (6). The advantage of this is that relatively small catalysts (12) can be used.
An installation (1) for classifying feedstock (10), comprising at least one cascade classifier (2) for classifying feedstock (10) into a coarse-grade material fraction of coarse-grade material (14) and a first middle-grade material fraction of first middle-grade material (13) and at least one rod-cage classifier (3), which is arranged downstream of the at least one cascade classifier (2) in the direction of classifying air and is intended for separating the first middle-grade material (13) into a fine-grade material fraction of fine-grade material (20) and a second middle-grade material fraction of second middle-grade material (21). The at least one cascade classifier (2) is of an annular design, wherein classifying cascades (5) are arranged in the manner of a spiral staircase in a hollow cylinder (6), bounded by an inner cylinder and by an outer cylinder. This has the result of increasing the classifying performance while at the same time reducing the amount of space required.
B07B 4/04 - Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall in cascades
B07B 7/083 - Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
B07B 9/02 - Combinations of similar or different apparatus for separating solids from solids using gas currents
74.
MATERIAL FLOW STOPPER FOR A FEEDING DEVICE IN A ROLL PRESS
The invention relates to a material flow stopper arrangement for a feed hopper (2) in a high-pressure roll press (1) for comminuting material (3) to be ground. According to the invention, the stopper arrangement includes a rocker (8), the pivot point (12) of which lies approximately in a plane coinciding with a wall of the feed hopper (2) and which has a recoil anchor (9) that blocks the rocker (8) in an open state in a first position (figure 2) and blocks the rocker (8) in a closed state in a second position (figure 4).
The invention relates to a method for making recesses in the surface of a rolling roller for a rolling press. The invention provides for a thermal treatment of a cylindrical roller surface, wherein the roller surface is heated in the region of the desired recesses until the material properties of the roller surface change permanently, i.e. even after cooling, with respect to the hardness of the roller material. By virtue of a first start-up, the desired profiling is formed spontaneously by the desired recesses. The thermal treatment represents a particularly simple and cost-effective method for profiling rolling rollers, and in particular rolling rollers which have already become worn can thereby be readily refurbished.
The invention relates to a closed-circuit grinding plant for grinding fresh material, comprising: a first device (2, 26, 27) for grinding the fresh material; a static pre-classifier (4) for pre-classifying the ground grinding material (3), having an input opening (5) for the ground grinding material (3), an output opening (7) for a coarse meal fraction (9), and a further output opening (6) for a fine-grained output material (8); a device (15) for separating out fine material (18), having an output opening (16) for a coarse-grained fraction (17), with subsequent recirculation to the first device for grinding, an output opening (19) for fine material (18), and at least one input opening (14a, 14b), wherein an input opening (14a, 14b) is connected to the output opening (6) of the static pre-classifier (4); and a second grinding device (11). According to the invention, the static pre-classifier (4) is a cascade classifier (4) and the second grinding device (11) is present in the form of a ball mill (11), wherein the ball mill (11) has a material inlet (10) connected to the output opening (7) for the coarse meal fraction (9) of the cascade classifier (4) and a material outlet (12) connected to an input opening (14a, 14b) of the device (15) for separating out fine material (18).
B02C 21/00 - Disintegrating plant with or without drying of the material
B02C 17/10 - Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
B07B 4/04 - Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall in cascades
The invention relates to a method for producing a cement, wherein at least one material to be ground is ground in at least two grinding devices (1, 2, 16, 17, 18) into differently ground material with grain size distributions that are different from one another, the ground material from each of the at least two grinding devices (1, 2, 16, 17, 18) is fed separately from one another by its own respective classifying air stream (3a, 3b) to one of at least two bar-cage classifiers (4, 5), and wherein, in each of the at least two bar-cage classifiers (4, 5), a fine material fraction (9, 10) is separated out and a coarse grain fraction (7, 8) is discharged. The invention provides that the classifying air streams carrying the fine material fractions (9, 10) that emerge from the at least two bar-cage classifiers (4, 5) are brought together within a common discharge device (11), with the fine material fractions (9, 10) being uniformly mixed together. This allows the grain size distribution to be influenced and a high-strength cement to be produced cost-effectively.
B02C 23/14 - Separating or sorting of material, associated with crushing or disintegrating with more than one separator
B07B 7/083 - Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
78.
HIGH-PRESSURE ROLLER PRESS WITH DEAERATION OF MATERIAL TO BE COMMINUTED
The invention relates to a high-pressure roller press for the high-pressure comminution of material to be comminuted in a nip, said high-pressure roller comprising two counter-rotating rollers that form a nip through which the material to be comminuted passes under high pressure during comminution, thereby breaking the structure of the material to be comminuted in the nip; and comprising a feed device which feeds the material to be comminuted uniformly into the nip, the volume of the fed material to be comminuted forming a compaction zone which extends from approximately the center of the nip to slightly above the center of the nip. The invention also relates to a method for preventing vibrations during the feeding of material to comminuted in a high-pressure roller press that has a nip and a feed device arranged thereabove. According to the invention, a device for deaerating the material to be comminuted is arranged directly above the compaction zone. Vibrations during the operation of the high-pressure roller press can be prevented in that the nip is uniformly coated with material to be comminuted as a result of the material to be comminuted being deaerated.
The invention relates to a method for the denitrification of bypass exhaust gases (105, 205, 305) in a plant for producing cement clinker, the plant comprising in the gas flow direction a rotary kiln (102, 202, 302), and said rotary kiln (102, 202, 302) being connected to a calcinator (107, 207, 307) for the deacidification of raw meal or to a rotary kiln riser shaft via a rotary kiln inlet chamber (104, 204, 304), and the bypass exhaust gas being drawn off in the region of the rotary kiln inlet chamber (104, 204, 304). The method according to the invention comprises the following steps: cooling the bypass gas (105, 205, 305) to a temperature between 260°C and 400°C in a cooling device, injecting an ammonia-, urea- and/or ammonium-containing substance into the cooled bypass gas (112, 21, 312), introducing the bypass gas (112, 21, 312) that has been mixed with an ammonia-, urea- and/or ammonium-containing substance and cooled into a ceramic filter system (114, 214, 314), in which any halide and sulfate of the alkali metals and alkaline-earth metals precipitated during cooling of the bypass gas (112, 21, 312) is filtered out, and any nitrogen oxide not yet reacted by the ammonia-, urea- and/or ammonium-containing (NH4 +) substance is chemically selectively reduced over a catalytic converter (116, 216, 316) which is located in the ceramic filter system (114) and/or which is located directly downstream of the ceramic filter system (214, 316).
The invention relates to a high-pressure roller press (1, 1') for comminuting material to be ground, having at least two mutually counter-rotating grinding rollers (4, 4', 5, 5') forming a roller gap (13, 13', 23), at least two bearings (8, 8', 9, 9') for each individual grinding roller (4, 4', 5, 5'). According to the invention, the bearings (8, 8', 9, 9') are each arranged on a pendulum (2, 2', 3, 3'), wherein in the operating state, the point of rotation (6, 6', 7, 7') of the pendulum (2, 2', 3, 3') is arranged above the bearing (8, 8', 9, 9'). It is thus achieved that the high weight force of the grinding rollers supports the formation of the roller gap pressure, and a simplification of the roller centering is achieved.
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Heat exchangers and parts therefor, in particular cyclone
heat exchangers. Calciners and parts therefor for the conversion of mineral
raw materials, in particular for deacidifying limestone;
furnaces and parts therefor for industrial purposes in
particular rotary kilns and parts therefor for the cement
industry and for processing minerals; oil burners. Construction, installation, assembly, conversion,
commissioning, repair, maintenance and servicing of burners;
construction and demolition of civil engineering structures;
factory construction, in particular relating to cement
factories, coal and ore processing installations, and metal
foundries; construction, installation, assembly, conversion,
commissioning, repair, maintenance and servicing of cement,
coal, mineral and metallurgical installations. Engineering, in particular planning, construction,
selection, compilation and dimensioning of parts of machine
installations for the cement, coal, mineral and metal
industry, and design and programming of process automation
installations; technical consultancy and project studies in
the field of installation construction, in particular in the
field of the cement, coal, mineral and metal industry;
technical, geological and scientific surveys, in particular
in the field of the cement, coal, mineral and metal
industry; land surveying; technical preparation for building
projects, in particular in the field of the creation of
industrial installations; physics (research); conducting of
energy calculations and simulations of industrial processes,
firing systems and heat exchangers, and calculation and
simulation of mechanical force distributions in static and
dynamic parts of installations; technical measuring and
testing laboratories, in particular measuring and testing of
pollutant and dust emissions from industrial installations;
chemical laboratories, in particular relating to building
material analysis; conducting of technical tests, in
particular conducting of stone and mineral grinding and dust
classification; geological and scientific surveys; research
in the field of environmental protection, chemistry,
technology, machine construction and the processing of
mineral raw materials.
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Heat exchangers and parts therefor, in particular cyclone
heat exchangers. Calciners and parts therefor for the conversion of mineral
raw materials, in particular for deacidifying limestone;
furnaces and parts therefor for industrial purposes in
particular rotary kilns and parts therefor for the cement
industry and for processing minerals; oil burners. Construction, installation, assembly, conversion,
commissioning, repair, maintenance and servicing of burners;
construction and demolition of civil engineering structures;
factory construction, in particular relating to cement
factories, coal and ore processing installations, and metal
foundries; construction, installation, assembly, conversion,
commissioning, repair, maintenance and servicing of cement,
coal, mineral and metallurgical installations. Engineering, in particular planning, construction,
selection, compilation and dimensioning of parts of machine
installations for the cement, coal, mineral and metal
industry, and design and programming of process automation
installations; technical consultancy and project studies in
the field of installation construction, in particular in the
field of the cement, coal, mineral and metal industry;
technical, geological and scientific surveys, in particular
in the field of the cement, coal, mineral and metal
industry; land surveying; technical preparation for building
projects, in particular in the field of the creation of
industrial installations; physics (research); conducting of
energy calculations and simulations of industrial processes,
firing systems and heat exchangers, and calculation and
simulation of mechanical force distributions in static and
dynamic parts of installations; technical measuring and
testing laboratories, in particular measuring and testing of
pollutant and dust emissions from industrial installations;
chemical laboratories, in particular relating to building
material analysis; conducting of technical tests, in
particular conducting of stone and mineral grinding and dust
classification; geological and scientific surveys; research
in the field of environmental protection, chemistry,
technology, machine construction and the processing of
mineral raw materials.
Machines for industrial process engineering, namely machines
and installations composed thereof for cooling and conveying
bulk materials, in particular for manufacturing cement. Grate coolers, in particular for cooling hot cement
clinkers; coolers and parts therefor for cooling hot bulk
material, in particular hot cement clinkers; walking floor
coolers, step grate coolers.
Machines for industrial process engineering, namely machines
and installations composed thereof for cooling and conveying
bulk materials, in particular for manufacturing cement. Grate coolers, in particular for cooling hot cement
clinkers; coolers and parts therefor for cooling hot bulk
material, in particular hot cement clinkers; walking floor
coolers, step grate coolers.
The invention relates to a closed-circuit crushing mill (1) for comminuting milling material, having at least one high-pressure roller press (2), at least one device for sorting fine milling material (3, 3.1) from the milling material (4) which can be found in the circuit, and at least two devices for conveying (5.1, 5.2) the milling material (4) which can be found in the circuit. According to the invention, the at least one high-pressure roller press (2) is spatially separated from and approximately at the same height as at least one device for sorting fine milling material (3) from the milling material (4) which can be found in the circuit, and the at least two devices for conveying (5.1, 5.2) the milling material (4) which can be found in the circuit cross each other approximately in the center when viewed from the side, wherein the spatial separation preferably equals at least five to twenty times the width or length of the high-pressure rolling press (2). It is thus possible to construct the mill on few solid foundations or on a ship in an advantageous manner.
B02C 4/02 - Crushing or disintegrating by roller mills with two or more rollers
B02C 4/28 - Crushing or disintegrating by roller mills Details
B02C 23/12 - Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
The invention relates to a method for operating a plant (1) for producing cement clinker from raw meal (2) having, as viewed in the materials flow direction, at least one calciner (3) for deacidifying the raw meal (2), and at least one rotary kiln (4) for sintering the deacidified raw meal (2) to form cement clinker (5), where the deacidified raw meal (2), after passing through the calciner (3), flows via a cyclone preheating stage (1.4) into the rotary kiln (4). The method according to the invention is distinguished by guiding of exhaust gases (6) from the rotary kiln (4) into a reactor (7), which is arranged between rotary kiln (4) and calciner (3), with fuel (8) being fed into the reactor (7) superstoichiometrically in relation to the dwell time of the exhaust gases (6) in the reactor (7), so that carbon dioxide (CO2) contained in the exhaust gases (6) is reduced to form carbon monoxide (CO). The carbon monoxide (C=) is used as a reducing agent for nitrogen oxides (NOx), which are chemically reduced in the reactor (7) independently of the short dwell time in the calciner (3).
The invention relates to a plant (1) for producing cement clinker, comprising as viewed in the direction of materials flow at least one heat exchanger (1.1) to preheat raw meal (2), at least one downstream calciner (3) to calcine the raw meal (2), at least one rotary kiln (8) to sinter the calcined raw meal (2), and at least one clinker cooler (11) to cool the sintered cement clinker; a firing means carbonizes, pyrolyses or burns difficult fuels - those which have unpredictable ignition characteristics, usually ignite poorly, or require assisted ignition in the form of substantial heating plus initial pyrolysis. In accordance with the invention, the firing means is embodied as a pot reactor or gooseneck reactor (5) in inverted U-shape, which is positioned upstream of the calciner (3) on the flow path of the exhaust gases from the rotary kiln (8) to the calciner (3) and which has a gas outlet (5.1) that opens out above a tertiary-air line (4.1) of the clinker cooler (11) into the calciner (3). As a result, it becomes possible to burn fuel which is lumpy and/or has poor ignitability, and the gases from incomplete combustion in the reactor are available in the calciner in gaseous form for further combustion.
Machines for industrial process engineering, namely machines and installations constructed therefrom for processing of bulk materials, in particular for the manufacture of cement. Grate coolers, in particular for cooling of hot cement clinkers; Radiators and parts therefor for cooling of hot bulk materials, in particular of hot cement clinkers; Sliding floor coolers, step grate coolers; Machines and installations constructed therefrom for cooling of bulk materials, in particular for the manufacture of cement, in particular grate coolers for cement clinkers.
89.
TREATMENT OF MATERIAL TO BE GROUND FOR CRUSHING IN A PRESSING MILL
The invention relates to a method and an installation for crushing material to be ground in a pressing mill, whereby vibrations that may be produced by air pockets in the material to be ground are reduced. According to the invention, it is proposed that the material to be ground, in particular coarse pieces, is fed into a charging device, is moistened by the addition of liquid and is subsequently crushed by a pressing mill. Moistening the material to be ground causes it to agglomerate. As a result, there is less air in the material to be ground. This avoids the escape of air from the material to be ground, as a result of which the pressing mill runs more smoothly and without vibration.
B02C 4/02 - Crushing or disintegrating by roller mills with two or more rollers
B02C 23/06 - Selection or use of additives to aid disintegrating
B02C 23/12 - Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
90.
COMBUSTION APPARATUS FOR FRAGMENTARY FUELS HAVING MECHANICAL FUEL TRANSPORT
The invention relates to a system (1) for producing cement clinker, comprising at least one calcinator (11) and at least one line (14) for introducing tertiary air into the calcinator (11) and at least one device (2) for burning fragmentary fuels, wherein the device (2) for burning fragmentary fuels is a combustion chamber (16), which opens into the calcinator (16), and is equipped with a mechanical transport device (17), which transports the fragmentary fuels into the calcinator (11). According to the invention, the mechanical transport device (17) is arranged on a tilted plane (18), wherein the fuel material is burned on the way across the transport device (17). Because the fragmentary fuel is not packed one on top of the other, both the fragmentary fuel material at the lower edge and the fragmentary fuel material at the upper end of the transport device have combustion air flowing through and thus can burn completely.
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Heat exchangers and parts therefor, In particular cyclone heat exchangers; Calcinators and parts therefor for converting mineral resources, in particular for neutralising limestone; Furnaces and parts therefor for industrial purposes, in particular cylindrical rotary kilns and parts therefor for the cement industry and for processing mineral materials; Oil burners. Construction, installation, assembly, modification, commissioning, repair, maintenance and servicing of burners; Structural and civil engineering; Factory construction, In particular relating to cement factories, coal and ore processing installations, and metal foundries; Construction, installation, assembly, modification, commissioning, repair, maintenance and servicing of cement, coal, mineral and metallurgical installations. Engineering, in particular planning, construction, selection, compilation and dimensioning of parts of machine installations for the cement, coal, mineral and metal industry, and design and programming of process automation installations; Technical consultancy and project studies in the field of installation construction, in particular in the field of the cement, coal, mineral and metal industry; Providing technical, geological and scientific expertise, in particular in the field of the cement, coal, mineral and metal industry; Land surveying; Building, Namely technical preparation of building projects, In particular in the field of building industrial installations; Physics [research]; Conducting of energy calculations and simulations of industrial processes, firing systems and heat exchangers, and calculation and simulation of mechanical force distributions in static and dynamic parts of installations; Technical measuring and testing laboratories, in particular measuring and testing of pollutant emissions and dust emissions from industrial installations; Chemistry services, In particular relating to building material analysis; Technical testing, In particular pulverisation of stone and minerals, and sorting of dust; Providing of geological and scientific surveys; Research in the field of environmental protection, the field of chemistry, technology, machine construction and the processing of mineral materials.
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Heat exchangers and parts therefor, In particular cyclone heat exchangers; Calcinators and parts therefor for converting mineral resources, in particular for neutralising limestone; Furnaces and parts therefor for industrial purposes, in particular cylindrical rotary kilns and parts therefor for the cement industry and for processing mineral materials; Oil burners. Construction, installation, Assembly, conversion, Commissioning, fix, Servicing and Burner maintenance; Structural and civil engineering; Factory construction, In particular relating to cement factories, coal and ore processing installations, and metal foundries; Construction, installation, Assembly, conversion, Commissioning, fix, Maintenance and servicing of installations for cement technology, coal technology, minerals technology and works technology. Engineering, in particular planning, construction, selection, compilation and dimensioning of parts of machine installations for the cement, coal, mineral and metal industry, and design and programming of process automation installations; Technical project studies, engineering consultancy, In particular in the field of the cement, coal, mineral and metal industry; Providing technical, geological and scientific expertise, in particular in the field of the cement, coal, mineral and metal industry; Land surveying; Building, Namely technical preparation of building projects, In particular in the field of building industrial installations; Physics [research]; Conducting of energy calculations and simulations of industrial processes, firing systems and heat exchangers, and calculation and simulation of mechanical force distributions in static and dynamic parts of installations; Technical measuring and testing laboratories, in particular measuring and testing of pollutant emissions and dust emissions from industrial installations; Chemistry services, In particular relating to building material analysis; Technical testing, In particular pulverisation of stone and minerals, and sorting of dust; Providing of geological and scientific surveys; Research in the field of environmental protection, the field of chemistry, technology, machine construction and the processing of mineral materials.
93.
METHOD FOR USING THE WASTE HEAT FROM A PLANT FOR PRODUCING CEMENT AND PLANT FOR PRODUCING CEMENT
The invention relates to a method for using the waste heat from a plant for producing cement, wherein heat of a process gas is used through a heat exchanger (21) to heat water vapour, and wherein the plant for producing cement has at least one calcinator (2, 4) and at least one heat exchanger (1), which consists of a sequence of cyclones (1a, 1b), for heating raw mix. The invention also relates to a plant for producing cement, wherein the plant for producing cement has at least one calcinator (2, 4) and at least one heat exchanger (1), which consists of a sequence of cyclones (1a, 1b), for heating raw mix. According to the invention, the process gas is taken at the outlet (10) of the calcinator (4) and/or at the gas-side outlet (11) of the first cyclone (1b) in the heat exchanger (1) in the direction of gas flow and, once the heat has been depleted in a steam vessel (21), the cooled process gas is fed back into the second cyclone (1a) or third cyclone in the heat exchanger (1) in the direction of gas flow. This has the advantage that the heat taken from the process can be used for the further heating of unrecovered heat which can thereby be more efficiently converted into electrical energy.
The invention relates to a process for producing cement with milling of cement clinker and sulphate carrier, where the sulphate carrier is preferably gypsum. According to the invention, it is proposed that the cement clinker and the gypsum be milled separately from one another in a high-pressure roller mill and/or vertical mill and only the sulphate carrier is heated in the circuit. In this way, only the gypsum is heated and dehydrated and up to 95% of the heat for converting gypsum into hemihydrate is saved.
37 - Construction and mining; installation and repair services
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Machines and parts therefor for the cement, coal and metal industries, namely crushing machines and parts therefor, in particular cone crushers and roll crushers for the cement, coal and metal industries; mills and parts therefor, in particular roller mills, hammer mills, ball mills, and vertical mills for the cement, coal and metal industries; presses, in particular roller presses and briquetting machines; millstones and ring bindings with and without hard bodies for mill rollers or press rollers; plants and parts therefor for separating fine bulk materials, in particular wind, cascade and rotary drum sifters for use in the manufacturing and processing of cement, coal and metal; plants for crushing grist, namely circular grinding machines for use in the manufacturing and processing of cement, coal and metal. (1) Civil engineering; factory construction, namely cement factories, coal and metalworks; construction, assembly, modification, commissioning, repair, maintenance and servicing of cement, coal and metallurgical plants; engineering services, namely planning, construction, selection, composition and dimensioning of machine installation parts for the cement, coal and metal industries and conception and programming for others of process automation of plants for the cement, coal and metal industries; technical consultancy and project planning in the field of plant construction engineering, namely in the field of the cement, coal and metal industries; providing of technical and geological survey opinions, in the field of the cement, coal and metal industries; land surveys; building contractor services, namely technical preparation of building projects, namely in the field of construction of industrial installations; scientific physics services, namely energy calculations and simulations of industrial processes, and the calculation and simulation of mechanical force distributions in static and dynamic plant parts; chemical laboratory services, namely raw material analysis; conducting of technical tests, namely conducting rock grinding and dust sifting analysis for others in the cement and coal industries; research in the field of environmental protection, chemistry and mechanical engineering.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Machines and parts therefor for the chemicals industry and for the cement, coal, mineral and metal industry; Grinding machines and parts thereof, In particular cone crushers and roller crushers for the cement, coal, mineral and metal industry; grinding mills, and parts therefor, In particular roller mills, Hammer mills, Ball mills, Roller disc mills and vertical mills for the cement, coal, mineral and metal industry; squeezers, In particular roller presses and Briquetting machines; Millstones and ring liners with and without hard bodies for mill or press rollers; Coolers and parts therefor for cooling of hot bulk materials, in particular of hot cement clinkers, in particular graduated grate coolers and chain grate coolers; Installations and parts therefor for separating fine-grained bulk material, in particular air separators, cascade classifiers and cage-wheel separators; Sorting machines and Parts therefor, In particular wet sorting machines, Type-setting machines [printing], Floatation engine and Magnetic separators; Control apparatus and Machinery and parts therefor or Engines and motors. Electric installations and parts therefor for the remote control of industrial operations, devices for measurement technology, control technology and regulating technology, and process automation systems. Heat exchangers and parts therefor, In particular cyclone heat exchangers; Calcinators and parts therefor for converting mineral resources, in particular for neutralising limestone; Furnaces and parts therefor for industrial purposes, in particular cylindrical rotary kilns and parts therefor for the cement industry and for processing mineral materials; Oil burners. Construction, installation, Assembly, conversion, Commissioning, fix, Servicing and Burner maintenance; Structural and civil engineering; Factory construction, In particular cement factories, coal and ore processing installations and metallurgical works; Construction, installation, Assembly, conversion, Commissioning, fix, Maintenance and servicing of installations for cement technology, coal technology, minerals technology and works technology. Engineering services, In particular for planning, Construction, selection, Bringing together and dimensioning of machine installation parts for the cement, coal, mineral and metal industry and design and programming of process automation systems; Technical project studies, engineering consultancy, In particular in the field of the cement, coal, mineral and metal industry; Providing technical, geological and scientific expertise, in particular in the field of the cement, coal, mineral and metal industry; Land surveying; Building, Namely technical preparation of building projects, In particular in the field of building industrial installations; Physics (research), energy calculations and simulations of industrial processes, heating systems and heat exchangers, and calculation and simulations of mechanical force distribution into static and dynamic installation parts; Technical measuring and testing laboratories, in particular measuring and testing of pollutant emissions and dust emissions from industrial installations; Chemistry services, In particular building material analysis; Technical testing, In particular pulverisation of stone and minerals, and sorting of dust; Providing of geological and scientific surveys; Research in the field of environmental protection, the field of chemistry, technology, machine construction and the processing of mineral materials.
97.
ROLLER PRESS HAVING A PULLING DEVICE FOR SIMPLIFIED INSTALLATION AND REMOVAL OF THE ROLLERS
The invention relates to a roller press (12), comprising at least two milling rollers (2, 3) supported in a machine frame (4), wherein the milling rollers are accommodated in bearing blocks (10, 11, 12, 13), which are movably arranged in the machine frame. According to the invention, at least one pulling device (30, 31) is arranged on the machine frame (4), which pulling device pulls the bearing blocks (10, 11, 12, 13) out of or into the machine frame (4) in dependence on the conveying direction. The installation and removal of the milling rollers (2, 3) is made easier by the at least one pulling device (30, 31).
A method for regulating the roll gap pressure of a roller press and a corresponding roller press. The roll gap pressure is regulated dependent on at least one oscillating movement that is measured on the roller press. This has the advantage that the roller press can always be operated at the maximum roller press efficiency without the roller press reaching the overload range.
B02C 4/32 - Adjusting, applying pressure to, or controlling the distance between, milling members
B30B 3/04 - Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
99.
SYSTEM FOR PRODUCING CEMENT CLINKER HAVING A COMBUSTION DEVICE FOR DIFFICULT-TO-BURN FUELS
The invention relates to a system for producing cement clinker, having, seen in the direction of material flow, at least one heat exchanger for preheating raw meal, at least one calciner following thereafter for calcining the raw meal, at least one rotary kiln for sintering the calcined raw meal, wherein the calciner and the rotary kiln are connected to each other by means of a rotary kiln inlet chamber, and at least one cooler for cooling the sintered cement clinker, wherein a combustion device for difficult-to-burn fuels is present, which carbonises, pyrolyses and/or burns the difficult-to-burn fuels optionally in the presence of raw meal. According to the invention, the combustion device is configured as a rotary kiln, the discharge end of which is connected to the rotary kiln inlet chamber. This produces the advantages that the transport distances for the difficult-to-burn fuels are made shorter and that the structural requirements for building the system for producing cement clinker are made easier. In particular, the foundations for the combustion device can be made smaller, and the bearing and drive of the combustion device are removed from the waste heat of the rotary kiln for sintering.
Machines for industrial process technology, namely machines
and plants for the treatment of bulk goods. Grate coolers, in particular for the cooling of hot cement
clinker; coolers and their parts for cooling of hot bulk
goods, in particular of hot cement clinker; reciprocating
grate coolers, stepped grate coolers; machines and plants
for cooling bulk goods, in particular during the production
of cement, in particular grate coolers for cement clinker.
