An inner drum for use in a dryer/mixer in connection with the production of an aggregate-binder mix includes a plurality of mixing paddles disposed on the outer surface of the inner drum and arranged in a plurality of rows. The mixing paddles are configured to rotate through a mixing chamber as the inner drum rotates within an outer drum of the dryer/mixer to mix aggregate and binder together. Interstitial spaces are formed between rows of mixing paddles and material leads, where aggregate material preferentially travels as the inner drum is rotated, extend along the mixing chamber. At least one interstitial mixing paddle is located on the outer surface of the inner drum and in one of the interstitial spaces at one of the material leads. The interstitial mixing paddle rotates through the mixing chamber as the inner drum rotates to also mix the aggregate and binder together.
E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
E01C 19/10 - Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resinsApparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
An inner drum for use in a dryer/mixer in connection with the production of an aggregate-binder mix includes a plurality of mixing paddles disposed on the outer surface of the inner drum and arranged in a plurality of rows. The mixing paddles are configured to rotate through a mixing chamber as the inner drum rotates within an outer drum of the dryer/mixer to mix aggregate and binder together. Interstitial spaces are formed between rows of mixing paddles and material leads, where aggregate material preferentially travels as the inner drum is rotated, extend along the mixing chamber. At least one interstitial mixing paddle is located on the outer surface of the inner drum and in one of the interstitial spaces at one of the material leads. The interstitial mixing paddle rotates through the mixing chamber as the inner drum rotates to also mix the aggregate and binder together.
E01C 19/10 - Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resinsApparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
A method for storing and providing pavement data related to a paved road area that includes paved roads formed by paved road portions that are each paved by a separate asphalt lot. The method includes providing a computer-based system that receives and presents pavement data related to pavement used in constructing the road. An as-built model provides a digital map of a location where the paved road area is located and is overlaid by a digital road model overlays that replicates the paved roads and includes user-selectable digital road segments for each of the paved roads. Each digital road segment corresponds to and is based on only one of road portions. A pavement data set is associated with each digital road segment and includes pavement data related to the asphalt lot used in forming the road portion. When a digital road segments is selected, corresponding pavement data is displayed.
A carbon reduction assembly adapted for use with wet and dry coal combustion products ("CCPs"). The assembly includes a direct-fired carbon reduction section having a dry material inlet device that is adapted to receive the dry CCPs and a direct-fired carbon reduction section burner unit that is adapted to reduce carbon content in the dry CCPs. The assembly also includes a direct-fired dryer section that is operatively connected with the direct-fired carbon reduction section and has a wet material inlet device that is adapted to receive the wet CCPs and a direct- fired dryer section drum that is adapted to dry the wet CCPs. The assembly further includes a control unit that is operatively connected with the carbon reduction section and the dryer section. An amount of hot gas generated by the carbon reduction section is conveyed to the dryer section, and the assembly is adapted to produce dry fly ash.
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
A carbon reduction assembly adapted for use with wet and dry coal combustion products (“CCPs”). The assembly includes a direct-fired carbon reduction section having a dry material inlet device that is adapted to receive the dry CCPs and a direct-fired carbon reduction section burner unit that is adapted to reduce carbon content in the dry CCPs. The assembly also includes a direct-fired dryer section that is operatively connected with the direct-fired carbon reduction section and has a wet material inlet device that is adapted to receive the wet CCPs and a direct-fired dryer section drum that is adapted to dry the wet CCPs. The assembly further includes a control unit that is operatively connected with the carbon reduction section and the dryer section. An amount of hot gas generated by the carbon reduction section is conveyed to the dryer section, and the assembly is adapted to produce dry fly ash.
A method for producing an asphalt concrete blend that includes the steps of drying and heating aggregate in a single and only dryer, preferably via direct heating, and without use of a pre-dryer. The aggregate is then combined with asphalt cement, preferably via indirect heating, such that the blend has an asphalt cement components (ACC) percentage of at least 25% percent to form an aggregate mix. Liquid asphalt cement may also be added to the aggregate mix. Preferably, the asphalt cement content of the final asphalt concrete blend is provided by a maximum of 70% ACC. In certain cases, the asphalt cement content of the asphalt concrete blend is comprised of ACC and liquid asphalt cement.
E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
E01C 19/10 - Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resinsApparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
E01C 19/05 - Crushing, pulverising, or disintegrating apparatusAggregate screening, cleaning, or heating apparatus
A dryer adapted for use in an asphalt plant. The dryer includes a drum having an inner wall and a flight having a proximal end connecting the flight to the inner wall of the drum and a distal end that is spaced apart from the proximal end. A first profile extends from the proximal end to the distal end of the flight and defines a flight shape. A notch is formed in the distal end of the flight, which notch includes a notch shape that is defined by a second profile. The second profile has a length L, a center point, and a portion that substantially approximates a conic section.
E01C 19/05 - Crushing, pulverising, or disintegrating apparatusAggregate screening, cleaning, or heating apparatus
F26B 11/04 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
A dryer adapted for use in an asphalt plant. The dryer includes a drum having an inner wall and a flight having a proximal end connecting the flight to the inner wall of the drum and a distal end that is spaced apart from the proximal end. A first profile extends from the proximal end to the distal end of the flight and defines a flight shape. A notch is formed in the distal end of the flight, which notch includes a notch shape that is defined by a second profile. The second profile has a length L, a center point, and a portion that substantially approximates a conic section.
E01C 19/05 - Crushing, pulverising, or disintegrating apparatusAggregate screening, cleaning, or heating apparatus
F26B 11/04 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
A burner assembly including a housing and an airflow restrictor plate for selectively restricting an amount of airflow passing out of the housing in order to reduce a heat output of the burner assembly. The housing has an air inlet and an air outlet and is configured to guide an airflow from the air inlet and out of the housing via the air outlet. The airflow restrictor plate has a single opening through which all airflow flowing through the housing from the air inlet must pass in order to exit the housing via the air outlet.
A burner assembly having a housing with an air inlet and an air outlet. The housing is configured to guide an airflow from the air inlet and out of the housing via the air outlet. The burner assembly further includes an airflow restrictor plate for selectively restricting an amount of airflow passing out of the housing in order to reduce a heat output of the burner assembly, the airflow restrictor plate having an opening through which airflow must pass in order to exit the housing via the air outlet.
F23D 14/36 - Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
F23D 14/70 - Baffles or like flow-disturbing devices
A remediation plant for remediating drilling mud, cuttings, and fluids. The preferred plant includes a reboiler that is adapted to provide heat to the drilling mud, cuttings, and fluid, a mud drum that is operatively connected to the reboiler, a distillation column that is operatively connected to the reboiler, a heat exchanger that is operatively connected to the reboiler, a condenser that is operatively connected to the distillation column, a condenser tank that is operatively connected to the condenser, an oil-water separator that is operatively connected to the condenser tank, and a pump that is operatively connected to the oil-water separator. The preferred remediation plant is adapted to remove synthetic drilling fluid from drilling mud, cuttings, and fluids. A method for remediating drilling mud, cuttings, and fluid.
A storage silo apparatus having a storage silo including a shell wall, a secondary wall spaced radially outwards from the shell wall, and a space having a first width formed between an outer surface of the shell wall and an inner surface of the secondary wall. An insulation layer located in the space is narrower than the space such that an air gap is formed within the space. The air gap is formed radially adjacent the insulation layer and is configured to resist heat transfer between the shell wall and the secondary wall.
E01C 19/10 - Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resinsApparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
B65D 88/26 - Hoppers, i.e. containers having funnel-shaped discharge sections
A road sensor system for sensing data about a road surface and for providing that data, in real time, to data receivers. The system includes a communications network and a data control center that receives and transmits data via the communications network. Sensor assemblies include a housing that is implanted into the road surface, a sensor in the housing that collects sensor data related to an area local to the sensor assembly, and a communications module for communicating sensor data via the communications network from the sensor to the data control center for storage in the database. Sensor data received and stored is associated with location data for a location of the road surface where the housing is implanted. The data receivers receive sensor data or metadata derived from sensor data via the communications network.
A road sensor system for sensing data about a road surface and for providing that data, in real time, to data receivers. The system includes a communications network and a data control center that receives and transmits data via the communications network. Sensor assemblies include a housing that is implanted into the road surface, a sensor in the housing that collects sensor data related to an area local to the sensor assembly, and a communications module for communicating sensor data via the communications network from the sensor to the data control center for storage in the database. Sensor data received and stored is associated with location data for a location of the road surface where the housing is implanted. The data receivers receive sensor data or metadata derived from sensor data via the communications network.
A remediation plant for remediating drilling mud, cuttings, and fluids. The preferred plant includes a reboiler that is adapted to provide heat to the drilling mud, cuttings, and fluid, a mud drum that is operatively connected to the reboiler, a distillation column that is operatively connected to the reboiler, a heat exchanger that is operatively connected to the reboiler, a condenser that is operatively connected to the distillation column, a condenser tank that is operatively connected to the condenser, an oil-water separator that is operatively connected to the condenser tank, and a pump that is operatively connected to the oil-water separator. The preferred remediation plant is adapted to remove synthetic drilling fluid from drilling mud, cuttings, and fluids. A method for remediating drilling mud, cuttings, and fluid.
An apparatus for producing a stabilizing base flame for a premix main burner flame in a burner assembly having a burner end, a first fuel line, a first fuel nozzle, a second fuel line, and a second fuel nozzle. The apparatus comprises a conduit having a first fuel line end in fluid communication with the first fuel line, a second fuel line end in fluid communication with the second fuel line, a valve in fluid communication with the conduit and a center fuel stabilization bluff body mounted in the burner end. The center fuel stabilization bluff body comprises a first ring, a second ring and a cylinder disposed between the first ring and the second ring.
An inspection device for inspecting storage silos having mobile body with a tray portion for holding internal components for powering and controlling the inspection device, such as a control circuit and power source. Pairs of spaced apart in-line drive wheels are mounted to the tray portion. An external equipment mounting location (space) is provided between the pairs of drive wheels. A universal wiring harness is located within the tray portion and extends to the external mounting location such that at least two non-identical items of inspection equipment can be interchangeably mounted to the mobile body and connected to the wiring harness. A top portion may be secured over the tray portion to enclose the internal components. Optional fenders may be secured over the wheels and external equipment. Preferably, the external equipment can be swapped without having to remove the top portion from the tray portion.
G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details
G01N 29/28 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details providing acoustic coupling
G01N 29/265 - Arrangements for orientation or scanning by moving the sensor relative to a stationary material
G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
An asphalt mix tracking system having a data collection system adapted to determine at least one characteristic of the asphalt mix, a data control system adapted to receive data from the data collection system, a lot tracking system adapted to track a lot of the asphalt mix, a truck tracking system adapted to track a truck, and a pavement injection system adapted to identify the lot of the asphalt mix. The preferred asphalt mix tracking system is adapted to substantially continuously track the asphalt mix from a mixing site to a paving site. A method for tracking an asphalt mix including determining the at least one characteristic of the asphalt mix, communicating the at least one characteristic of the asphalt mix to the data control system, transporting the asphalt mix from the mixing site to the paving site, and injecting an identification means at the paving site.
E01C 23/01 - Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed supportsApplications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
E01C 19/18 - Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
G06Q 10/08 - Logistics, e.g. warehousing, loading or distributionInventory or stock management
E01C 19/10 - Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resinsApparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
20.
Apparatus and method for linear mixing tube assembly
A mixing tube assembly having an inlet end and an outlet end and being adapted for use in a burner assembly. The mixing tube assembly comprises a substantially cylindrical outer wall which defines an interior open space. The mixing tube assembly also comprises a turbulator that is disposed in the interior open space defined by the substantially cylindrical outer wall and a flow straightening device that is disposed downstream from the turbulator. A method for mixing fuel and air in a burner assembly comprising providing a mixing tube assembly. The preferred method also comprises conveying fuel and air from the inlet end of the mixing tube assembly to the outlet end of the mixing tube assembly and straightening the gaseous fuel and air mixture flow in the mixing tube assembly.
A dryer adapted for use in an asphalt plant. The dryer comprises a drum having an inner wall and a plurality of flights, each of which is disposed on the inner wall of the drum and each of which has a proximal end and a distal end spaced apart from the proximal end. At least one of the plurality of flights comprises a V-shaped notch. A method for drying components of asphalt comprising drying the components of asphalt in the drum of such a dryer.
F26B 11/04 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
E01C 19/05 - Crushing, pulverising, or disintegrating apparatusAggregate screening, cleaning, or heating apparatus
F26B 23/02 - Heating arrangements using combustion heating
F26B 11/02 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
F26B 21/00 - Arrangements for supplying or controlling air or gases for drying solid materials or objects
A system for controlling the production of an asphalt mix. The preferred system comprises an asphaltic material source, an asphaltic material sensor, a liquid asphalt cement source, a liquid asphalt cement meter, and a controller. The asphaltic material sensor communicates the amount of asphaltic material liquid asphalt cement and the amount of asphaltic material moisture contained in the amount of asphaltic material to the controller, the liquid asphalt cement meter communicates the amount of liquid asphalt cement provided by the liquid asphalt cement source to the controller, and the controller controls the amount of asphaltic material provided by the asphaltic material source and the amount of the liquid asphalt cement provided by the liquid asphalt cement source. A method comprising controlling the amount of asphaltic material and the amount of liquid asphalt cement provided to the asphalt mix substantially continuously and substantially in real time.
E01C 19/10 - Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resinsApparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
A system for controlling the production of an asphalt mix. The preferred system comprises a recycled asphalt pavement source, a recycled asphalt pavement sensor, a liquid asphalt cement source, a liquid asphalt cement meter, and a controller. The recycled asphalt pavement sensor communicates the amount of recycled liquid asphalt cement and the amount of RAP moisture contained in the amount of recycled asphalt pavement to the controller, the liquid asphalt cement meter communicates the amount of liquid asphalt cement provided by the liquid asphalt cement source to the controller, and the controller controls the amount of recycled asphalt pavement provided by the recycled asphalt pavement source and the amount of the liquid asphalt cement provided by the liquid asphalt cement source. A method comprising controlling the amount of recycled asphalt pavement and the amount of liquid asphalt cement provided to the asphalt mix substantially continuously and substantially in real time.
E01C 19/10 - Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resinsApparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
A mixing tube assembly having an inlet end and an outlet end and being adapted for use in a burner assembly. The mixing tube assembly comprises a substantially cylindrical outer wall which defines an interior open space. The mixing tube assembly also comprises a turbulator that is disposed in the interior open space defined by the substantially cylindrical outer wall. A method for mixing fuel and air in a burner assembly comprising providing a mixing tube assembly. The preferred method also comprises conveying fuel and air from the inlet end of the mixing tube assembly to the outlet end of the mixing tube assembly.
A dryer performance optimization system comprising a dryer having an inner wall and being adapted to rotate at variable speeds and a variable frequency drive being adapted to vary the rotational speed of the dryer. The preferred system also comprises a baghouse having an inlet end being adapted to receive exhaust gas from the dryer and an outlet end and a controller being adapted to control the temperature of the exhaust gas from the dryer. A method for controlling the temperature of exhaust gas in a baghouse comprising providing a dryer performance optimization system as described herein and varying the temperature of the exhaust gas from the dryer by varying the rotational speed of the dryer.
F26B 23/02 - Heating arrangements using combustion heating
F26B 11/02 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
F26B 21/00 - Arrangements for supplying or controlling air or gases for drying solid materials or objects
F26B 11/04 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
F26B 25/00 - Details of general application not covered by group or
26.
Apparatus and method for dryer performance optimization system
A dryer performance optimization system comprising a dryer having an inner wall and being adapted to rotate at variable speeds and a variable frequency drive being adapted to vary the rotational speed of the dryer. The preferred system also comprises a baghouse having an inlet end being adapted to receive exhaust gas from the dryer and an outlet end and a controller being adapted to control the temperature of the exhaust gas from the dryer. A method for controlling the temperature of exhaust gas in a baghouse comprising providing a dryer performance optimization system as described herein and varying the temperature of the exhaust gas from the dryer by varying the rotational speed of the dryer.
An assembly for processing green biomass materials from two separate feed sources for use as a fuel pellet includes a drying assembly, a torrefaction assembly and a heating assembly. The drying assembly is adapted to convert the green biomass material obtained from a first source to white biomass material. The torrefaction assembly is adapted to convert green biomass material obtained from a second source to torrefied biomass material. The heating assembly provides heat for both the drying assembly and the torrefaction assembly.
An assembly for processing green biomass materials from two separate feed sources for use as a fuel pellet includes a drying assembly, a torrefaction assembly and a heating assembly. The drying assembly is adapted to convert the green biomass material obtained from a first source to white biomass material. The torrefaction assembly is adapted to convert green biomass material obtained from a second source to torrefied biomass material. The heating assembly provides heat for both the drying assembly and the torrefaction assembly.
An assembly for processing green biomass material for pelletizing into a fuel, pellet includes a heating assembly, a drying assembly and a cooling assembly. The heating assembly heats a thermal fluid to a temperature within the range of 200° F to 550° F. The drying assembly includes a rotating dryer drum that has a plurality of thermal fluid tubes therein. Material that is dried in the dryer drum is conveyed to a rotating cooling drum that has a cooling tube extending along the interior thereof. A nozzle is mounted on the end of the cooling tube to discharge cooling fluid on the material therein, and a plurality of flights are mounted on the interior of the cooling drum and arranged to direct material from the inlet to the discharge outlet as the cooling drum is rotated.
An asphalt plant adapted to use RAP to produce asphalt. The preferred asphalt plant comprises a bin that is adapted to store the RAP, a heat source that is adapted to supply heat, a dryer that is adapted to dry the RAP, a mixer that is adapted the mix the RAP and a means for conveying the RAP from the bin to the dryer. The preferred asphalt plant uses substantially only the RAP to produce asphalt. A method for producing asphalt from RAP comprising providing an asphalt plant adapted to use the RAP to produce asphalt. The preferred method further comprises conveying the RAP from the bin to the dryer, drying the RAP, and mixing the RAP.
B28C 5/46 - Arrangements for applying super- or sub-atmospheric pressure during mixingArrangements for cooling or heating during mixing
E01C 19/05 - Crushing, pulverising, or disintegrating apparatusAggregate screening, cleaning, or heating apparatus
E01C 19/10 - Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resinsApparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
32.
Method and apparatus for adapting asphalt dryer/mixer to minimize asphalt build-up
A method and template are provided for modifying an asphalt dryer/mixer that includes an outer drum and an inner drum with a plurality of mixing paddles, the two drums forming an annular mixing chamber in which asphalt cement and aggregate materials are mixed. The template comprises a bracket marking portion that is adapted to locate one or more brackets on the inner drum and a paddle reference portion that is adapted to locate the bracket marking portion with respect to a mixing paddle. A mixing paddle to be referenced for locating a bracket is selected and the template is placed on the inner drum with the paddle reference portion referencing the selected mixing paddle. The template is used to mark the location of the bracket, the bracket is affixed to the outer surface of the inner drum at the bracket location marked; and an agitation strand is attached to the bracket.
A burner assembly including a housing having an air inlet and a burner end, a motor, and an impeller mounted in the housing. The impeller is in fluid communication with the air inlet, in mechanical communication with the motor, and adapted to direct air from the air inlet towards the burner end of the housing. The burner assembly also includes at least one pre-mix gas injection nozzle mounted in the housing. Each of the at least one pre-mix gas injection nozzle has at least one orifice adapted to direct gaseous fuel into the housing. The burner assembly further includes a spin vane comprising at least one spin vane blade. The spin vane is mounted in the burner end of the housing and adapted to direct the flow of air in the burner end. The burner assembly still further includes a flattening screen located in the housing downstream from the impeller and an igniter mounted in the burner end of the housing. The igniter is adapted to ignite the air and fuel mixture in the burner end of the housing to produce a main flame.
A burner assembly including a housing having an air inlet and a burner end, a motor, and an impeller mounted in the housing. The impeller is in fluid communication with the air inlet, in mechanical communication with the motor, and adapted to direct air from the air inlet towards the burner end of the housing. The burner assembly also includes a plurality of gas injection tubes that are disposed substantially parallel to each other. Each of the plurality of gas injection tubes includes a tube inlet end, a tube outlet end and at least one aperture. In addition, the burner assembly includes a first tube sheet disposed near the tube inlet ends of the plurality of gas injection tubes and a second tube sheet disposed near the tube outlet ends of the plurality of gas injection tubes. The burner assembly further includes a spin vane having at least one spin vane blade. The spin vane is mounted in the burner end of the housing and adapted to direct the flow of air in the burner end. The burner assembly still further includes an igniter mounted in the burner end of the housing. The igniter is adapted to ignite the air and fuel mixture in the burner end of the housing to produce a main flame.
A hot mix asphalt plant for producing hot mix asphalt using a high percentage of RAP comprising a first dryer adapted to receive and mix virgin aggregates and RAP fines and a first burner assembly adapted to produce a burner flame and heat and dry the virgin aggregates in the first dryer. The plant also includes a second dryer adapted to receive coarse RAP and a second burner assembly adapted to produce a burner flame and heat and dry the coarse RAP in the second dryer. The plant further comprises a pugmill adapted to receive the virgin aggregates and the RAP fines from the first dryer and the coarse RAP from the second dryer and mix the virgin aggregates, the RAP fines and the coarse RAP to produce hot mix asphalt. The method of the invention includes the steps of providing first dryer, a first burner, a second dryer, and a second burner, conveying the virgin aggregates to the first dryer, heating and drying the virgin aggregates in the first dryer, conveying the RAP fines to the first dryer, mixing the virgin aggregates and the RAP fines in the first dryer, conveying the coarse RAP to the second dryer, heating and drying the coarse RAP in the second dryer, and mixing the coarse RAP, the RAP fines and the virgin aggregates to produce hot mix asphalt.
B28C 5/20 - Mixing in containers to which motion is imparted to effect the mixing rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers
A burner assembly including a housing having an air inlet, a burner end having an opening, a longitudinal axis extending generally from the air inlet toward the burner end, a motor, an impeller mounted in the housing and being in fluid communication with the air inlet, operatively connected to the motor and adapted to direct air from the air inlet toward the burner end, a coal tube adapted to convey coal toward the burner end, a coal inlet adapted to convey coal to the coal tube, a first bluff body ring, a second bluff body ring and a third bluff body ring mounted at the burner end, a flame bridge disposed between the first bluff body ring and the second bluff body ring, and an igniter mounted in the burner end and being adapted to ignite the air and fuel mixture in the burner end to produce a main flame.
A foamed asphalt cement nozzle assembly is adapted for use in connection with a mixer for mixing aggregate materials and asphalt cement to make asphalt concrete. The foamed asphalt cement nozzle assembly includes a foamed cement mixing chamber, a first inlet for liquid asphalt cement and a second inlet for water, each of which is in fluid communication with the foamed cement mixing chamber. An outlet for foamed asphalt cement is also provided, which outlet is in fluid communication with both the foamed cement mixing chamber and the mixer. The invention also comprises a method for making asphalt concrete using foamed asphalt cement. The method includes introducing aggregate materials into the mixer and heating the aggregate materials to a temperature at least as high as the boiling point of water but no higher than about 285° F. The method also includes introducing liquid asphalt cement and the water to the foamed cement mixing chamber so as to produce foamed asphalt cement, and introducing foamed asphalt cement into the mixer and mixing it with aggregate materials at a temperature at least as high as the boiling point of water but no higher than about 285° F. to produce asphalt concrete. The invention also includes an apparatus for making asphalt concrete which includes a foamed asphalt cement nozzle assembly.
E01C 7/18 - Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
E01C 19/02 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
E01C 19/10 - Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resinsApparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
38.
APPARATUS AND METHOD FOR A HOT MIX ASPHALT PLANT USING A HIGH PERCENTAGE OF RECYCLED ASPHALT PRODUCTS
A hot mix asphalt plant for producing hot mix asphalt using a high percentage of recycled asphalt products (RAP) comp꧀sing a first dryer to receive an mix virgin aggregate and RAP fines and a first burner assembly to produce a burner flame and heat and dry the virgin aggregates in the dryer The plant also includes a second dryer to receive coarse RAP and a second burner assembly to produce a burner flame and heat and dry the coarse RAP in the second dryer The plant further compnses a pugmill adapted to receive the virgin aggregates and the RAP fines from the first dryer and the coarse RAP from the second dryer and mix the virgin aggregates, the RAP fines and the coarse RAP to produce the hot asphalt
combination drum-type mechanical mixers and aggregate driers for use in mixing, blending and commingling aggregate, sand, cement, and other components and ingredients of asphalt and concrete construction materials, and associated structures and control units, for use in the manufacture and processing of asphalt and concrete construction materials
portable asphalt manufacturing and processing plants and components thereof consisting of machines and equipment for the production of asphalt construction materials, including bins, conveyors and elevators, vibrators, screens, asphalt cement heaters, drum-type and other mixers, machinery and equipment for coating aggregate materials with asphalt cement, storage tanks and silos, aggregate driers, baghouses, cyclones and other dust control and collector mechanisms, scales, generators and associated structures and control units and houses, all sold as a unit
