The invention relates to a method of using a flotation machine that is used in metallurgical processes and to a flotation machine. The flotation machine foams hydrophobic particles from an aqueous slurry that contains these particles. The flotation machine includes a flotation cell (1), and a rotor (2) that is inside the flotation cell. The rotor (2) is rotated at a mixing power, which maintains the suspension in the slurry and mixing of air with the slurry to form the foam, and the mixing power is controlled by adjusting the rotation speed of the rotor. The amount of solid matter S accumulated on the bottom of the cell (1) is determined, and the rotation speed of the rotor (2) is adjusted on the basis of the determined amount of solid matter. The flotation machine includes a measuring device (5) for determining the amount of solid matter accumulated on the bottom of the cell. The adjusting device (4) is arranged to adjust the rotation speed of the motor (3), which rotates the rotor (2), on the basis of the measuring result of the measuring device (5) to remove the solid matter from the bottom of the cell.
A plant for chemical or physical treatment of granular solids includes a fluidized-bed reactor, a solids supply conduit and a central gas supply tube. A cooling tube is disposed relative to the gas supply tube so as to form an annular cooling duct, which is configured to cool the gas supply tube and the process gas and is connected with a coolant source configured to supply a coolant with a temperature of below about 400° C. Outlet openings are disposed in the cooling tube. The fluidized-bed reactor is a Venturi reactor in which the cooling tube opens into a flared portion with the outlet openings connecting the annular cooling duct with the reactor interior. The cooling tube adjoins the gas supply tube and extends substantially parallel to the flared portion of the reactor.
F23G 5/00 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets ou de combustibles pauvres
B01J 8/24 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés les particules étant fluidisées selon la technique du "lit fluidisé"
B01J 8/18 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés les particules étant fluidisées
F23C 6/04 - Appareils à combustion caractérisés par la combinaison d'au moins deux chambres de combustion disposées en série
F23C 10/10 - Appareils dans lesquels la combustion a lieu dans un lit fluidisé de combustible ou d'autres particules avec des moyens spécialement adaptés pour obtenir ou activer un mouvement de circulation des particules à l'intérieur du lit ou pour remettre en circulation les particules entraînées à l'extérieur du lit les particules étant entraînées vers une section, p. ex. une section d'échange de chaleur ou une conduite de retour, au moins partiellement séparée de la zone de combustion, avant d'être réintroduites dans la zone de combustion caractérisés par l'agencement de l'appareil de séparation, p. ex. des cyclones, pour séparer les particules des gaz de fumée l'appareil de séparation étant situé à l'extérieur de la chambre de combustion
F27B 15/02 - Parties constitutives, accessoires ou équipement spécialement adaptés à ces types de fours
F27B 15/10 - Aménagement des dispositifs d'alimentation en air ou gaz
3.
Equipment and method for electrolytic recovery of metal
The invention concerns a system of gas ducts (6) for transporting gas, for example, into electrolytic equipment, in connection with which there are means (13) for taking at least gas into the system of gas ducts, whereby there is a suitable number of gas supply holes (7) in the system of gas ducts in a wall (19) limiting the system of gas ducts, whereby the material, such as gas, flowing in the system of gas ducts (6) is prevented at least in part from passing through the wall (19) of the system of gas ducts (6). The invention also concerns equipment and a method for electrolytic recovery of metal, such as copper.
The invention relates to a method of using a flotation machine that is used in metallurgical processes and to a flotation machine. The flotation machine foams hydrophobic particles from an aqueous slurry that contains these particles. The flotation machine includes a flotation cell (1), and a rotor (2) that is inside the flotation cell. The rotor (2) is rotated at a mixing power, which maintains the suspension in the slurry and mixing of air with the slurry to form the foam, and the mixing power is controlled by adjusting the rotation speed of the rotor. The amount of solid matter S accumulated on the bottom of the cell (1) is determined, and the rotation speed of the rotor (2) is adjusted on the basis of the determined amount of solid matter. The flotation machine includes a measuring device (5) for determining the amount of solid matter accumulated on the bottom of the cell. The adjusting device (4) is arranged to adjust the rotation speed of the motor (3), which rotates the rotor (2), on the basis of the measuring result of the measuring device (5) to remove the solid matter from the bottom of the cell.
B03D 1/02 - Procédés de flottation par formation d'écume
B03D 1/16 - Machines de flottation à propulseursMachines à subaération
B03B 13/00 - Systèmes de commande, spécialement adaptés aux appareils à séparer par voie humide ou à des installations de préparation mécanique, utilisant des effets physiques
The invention relates to a mixing device and method by means of which two solutions that are insoluble or poorly soluble in each other are mixed together into a dispersion. The device consists of at least three helical bars rotating upwards around a shaft and supported on it, so that the support structures between the shaft and the helical rods are set essentially in a horizontal position. The device and method are particularly suitable for mixing solvent extraction solutions used in the hydrometallurgical recovery of metals to form a dispersion.
B01F 7/00 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins
B01F 7/16 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec agitateurs tournant autour d'un axe vertical
C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
6.
METHOD FOR CONTROLLING THE SUSPENSION IN A SUSPENSION SMELTING FURNACE, A SUSPENSION SMELTING FURNACE, AND A CONCENTRATE BURNER
The invention relates to a method for controlling suspension (8) in a suspension smelting furnace (1), to a suspension smelting furnace, and to a concentrate burner (2). The method comprises feeding additionally to pulverous solid matter (6) and additionally to reaction gas (7) reducing agent (13) into the suspension smelting furnace (1), wherein reducing agent (13) is fed in the form of a concentrated stream of reducing agent (13) through the suspension (8) in the reaction shaft (2) onto the surface (9) of the melt (10) to form a reducing zone (15) containing reducing agent (13) within the collection zone (14) of the melt (10).
The invention concerns a frame (1) to which a bag (2) of diaphragm fabric used in an electrolysis process is attachable and to the inside of said bag an anode plate (3) is adaptable. The frame (1) comprises a horizontal top beam (4) having a first end (5) and a second end (6), an upper side (7) and a lower side (8), the anode plate being sealably attachable in relation to the top beam at the longitudinal vertical middle plane of the top beam. A vertical first beam (9) having a first upper end (10) is connected to the first end (5) of the top beam. A vertical second beam (11) having a second upper end (12) is connected to the second end (6) of the top beam. The top beam (4) comprises a cavity (13) which opens downwardly and ex- tends along the length of the lower side (8) of the top beam. The invention also concerns an electrolysis system for electrowinning a metal from an electrolyte that contains a metallic salt. The system comprises electrolytic cells (20), each of said cells having means for keeping the electrolyte at a predetermined level (L). A number of anode plates (3) and cathode plates (21) are immersed in the electrolyte in an alternating and consecutive manner. Each anode plate (3) is arranged inside the frame (1) onto which a bag (2) of diaphragm fabric is attached to form an anode bag assembly (22. The cavity (13)in the top beam (4)collects pure oxygen generated on the anode plate during the electrolysis process.
An apparatus for treating off-gas including acid mist originating from a source that forms acid mist, the apparatus including a gas scrubber (1) which is arranged to receive off-gas to be cleaned from acid mist, a demister (2) which is provided after the gas scrubber in the flow direction of the gas to receive the gas from the gas scrubber and remove droplets from the gas, a fan (3) to provide a gas flow and a chimney (4) to carry the cleaned dry gas to the ambient air. The fan(3) is provided before the gas scrubber (1) in the flow direction of the gas, whereby the gas scrubber (1) operates under a slightly positive pressure.
C25C 1/00 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions
B01D 53/00 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols
C25C 1/12 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions du cuivre
9.
COOLING ELEMENT AND METHOD FOR MANUFACTURING A COOLING ELEMENT
The invention relates to a cooling element for a pyrometallurgical furnace such as for a flash smelting furnace or for a flash converting furnace or for a suspension smelting furnace. The invention relates also to a method for manufacturing a cooling element for a pyrometallurgical furnace such as for a flash smelting furnace or for a flash converting furnace or for a suspension smelting furnace. The cooling element (2) has a fire surface (2) to be in contact with an interior of the metallurgical furnace. The cooling element comprises a base element (4) containing copper and a coating (5) at least partly covering the base element (4). The coating (4) forms the fire surface (2) of the cooling element (1). The coating (5) is at least partly applied by a laser coating process such as laser deposition, and the coating (5) contains a Ni based alloy.
A TSL lance has an outer shell of three substantially concentric lance pipes, at least one further lance pipe concentrically within the shell, and an annular end wall at an outlet end of the lance which joins ends of outermost and innermost lance pipes of the shell at an outlet end of the lance and is spaced from an outlet end of the intermediate lance pipe of the shell. Coolant fluid is able to be circulated through the shell, by flow to and away from the outlet end. The spacing between the end wall and the outlet end of the intermediate pipe provides a constriction to the flow of coolant fluid to increase coolant fluid flow velocity therebetween. The further lance pipe defines a central bore and is spaced from the innermost lance pipe of the shell to define an annular passage, whereby materials passing along the bore and the passage mix adjacent to the outlet end of the lance. The end wall and an adjacent minor part of the length of the shell comprise a replaceable lance tip assembly.
Process for the manufacture of ferrochrome alloy comprising the steps of providing a pelletising feed, wherein the pelletising feed comprises chromite ore and silicon carbide as the only carbonaceous material and the only reducing agent; pelletising the pelletising feed to obtain pellets; sintering the pellets to obtain sintered pellets; mixing the sintered pellets with external reducing agent to obtain smelting feed; and smelting the smelting feed.
The invention relates to a pelletising feed containing chromite ore, at least one nickel salt, and silicon carbide as the only carbonaceous material and the only reducing agent. The invention also relates to process for manufacturing the pelletising feed comprising the steps providing chromite, at least one nickel salt and silicon carbide, and mixing chromite, at least one nickel salt and silicon carbide. The invention also relates to use of the pelletising feed as a starting material for the manufacture of sintering feed. The invention also relates to a sintering feed in the form of pellets containing the pelletising feed. The invention also relates to sintered pellets containing the sintering feed. The invention also relates to process for manufacturing the sintered pellets. The invention also relates to use of the sintered pellets as a component of smelting feed. The invention also relates to smelting feed comprising sintered pellets. The invention also relates to process for manufacturing ferrochrome alloy. The invention also relates to ferrochrome alloy obtainable by the method.
The invention relates to a method and equipment for the continuous sintering of mineral material in a sintering furnace (S). In the method, a material bed (2) is formed on a conveyor base (1), the material bed (2) is conveyed by the conveyor base (1) through the process zones (I-VII) of the sintering furnace that have different temperatures, the zones including at least one drying zone (I), at least one cooling zone (VII), and at least one other process zone (II, III, IV, V, VI) between the said drying zone and cooling zone, and gas is conducted through the conveyor base and the material bed (2), when the material bed travels through the process zones (I-VII), and gas is circulated in a circulation gas duct (3) from the last cooling zone (VII) to the drying zone (I). Part of the gas flow that is conducted to the drying zone (I) in the circulation gas duct (3) is removed as an exhaust gas flow (B) by the exhaust gas blower (5) of an exhaust gas duct (4). The volume flow of the exhaust gas flow (B) is regulated by regulating the blowing power of the blower (5) to control the temperature of the gas flow travelling through the material bed in the drying zone.
F27B 9/00 - Fours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité
F27B 21/00 - Appareils de frittage ouverts ou à découvertAutres appareils de traitement thermique de structure similaire
C22B 1/20 - FrittageAgglomération dans des machines à fritter, avec des grilles mobiles
C22B 1/26 - Refroidissement des minerais grillés, frittés ou agglomérés
F27B 21/06 - Machines à fritter des fibres sans fin
F27D 7/02 - Alimentation en vapeur d'eau, en gaz ou en liquides
F27B 9/30 - Parties constitutives, accessoires ou équipement spécialement adaptés à ces types de fours
F27D 9/00 - Refroidissement des fours ou des charges s'y trouvant
14.
RECESS PLATE AND METHOD FOR DETECTING MEMBRANE LEAKAGE
The invention relates to a recess plate for a membrane filter device, the filter device having a stack of essentially identical recess plates, the recess plates having recesses, and the recesses forming filter chambers (3) between adjacent recess plates of the stack, into which filter chambers (3) a suspension can be supplied on a cake side of a filter cloth, and the suspension can permeate the filter cloth to a filtrate side thereof, such that a solid content of the suspension deposits on the filter cloth as a filter cake, each filter chamber (3) having a movable membrane, the membrane and the recess plate enclosing a squeezing chamber, the recess plate having an inlet duct (6) for inserting a pressurizing medium into the squeezing chamber, for mechanical pressing out of the respective filter cake. The invention further relates to a method for detecting membrane leakage in such membrane filter device. According to the invention it is suggested that, for each of the filter chambers (3) a shut-off valve (7) is provided for shutting the duct and a measuring device (8) for measuring pressure inside the squeezing chamber, and that the pressurizing medium is supplied into the respective squeezing chamber, after supplying the pressurizing medium the respective inlet duct (6) is tight closed, a pressure inside the squeezing chamber is monitored and detecting a decrease in the pressure is considered as evidence for a leakage of the respective membrane.
A method for leaching a sulfidic metal concentrate in hydrometallurgical production of metal in a leaching process from which hot water vapor containing off-gas is conducted out and to which an acid solution warmed up to an elevated temperature is conducted. The acid solution is warmed up to an elevated temperature by bringing off-gas of the leaching step into direct con¬ tact with the acid solution.
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
A packed tower, in particular for the absorption of water or SO3 in sulfuric acid, includes a bed (8) of packings (9) held on a domed grid (7) through which the sulfuric acid charged from above trickles, a gas supply tube (5) provided in the lower region of the tower, a gas outlet provided above the bed, and an acid outlet (4) provided in the lower region of the tower. To reduce the corrosion, the domed grid (7) is held on an L-shaped ring (10) such that between the outside diameter of the domed grid (7) and the jacket (2) of the packed tower (1) a gap (15) is formed.
B01J 8/02 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules immobiles, p. ex. dans des lits fixes
B01J 19/30 - Éléments de remplissage non agglomérés ou en forme, p. ex. anneaux de Raschig ou éléments de Berl en forme de selle, destinés à être versés dans l'appareil de transfert de chaleur ou de matière
B01J 10/00 - Procédés chimiques généraux faisant réagir un liquide avec des milieux gazeux autrement qu'en présence de particules solidesAppareillage spécialement adapté à cet effet
A method and apparatus for converting an iron-bearing residue generated in a hydrometallurgical process that contains small amounts of soluble heavy metals into a stable form by means of a neutralizing agent. The residue is elutriated and the elutriated residue is fed into at least one stabilization or homogenization reactor, into which a neutralizing agent is also routed, and the homogenous mixing together of the residue and neutralizing agent takes place by means of a helix mixer, where the ratio of the diameter of the mixer to the diameter of the reactor is 0.75-0.99.
A lance (10), for conducting a pyrometallurgical operation by top submerged lancing (TSL) injection, wherein the lance (10) has at least an inner pipe (12) and outer pipe (14) which are substantially concentric. The lower outlet of the inner pipe (12) is set at a level relative to the lower, outlet end of the outer pipe (14) required for pyrometallurgical operation. The lance (10) further includes a shroud (22) through which the outer pipe (14) extends and which is mounted on and extends along an upper portion of the outer pipe (14) to define with the outer pipe (14) a passageway (28) along which gas is able to be supplied for flow towards the outlet end of the outer pipe (14) for discharge exteriorly of the lance (10). The shroud (22) is longitudinally adjustable relative to the outer pipe (14) to enable substantial maintenance of, or variation in, a longitudinal spacing between the outlet ends of the shroud (22) and the outer pipe (14).
The invention relates to a method by which the valuable metals and any possible precious metals are recovered from a material containing them, such as the mixed matte formed in a smelter. The valuable metals in the material formed in the smelter are leached with an acidic solution containing sulphate and chloride, from which each metal is separated by means of solvent extraction. In leaching,any precious metals contained in the material remain undissolved in the leach residue, from which they are leached with a solution containing hydrochloric acid in oxidizing conditions and separated from the solution by solvent extraction.
The invention relates to a method for processing a sulphidic bulk concentrate, in which the concentrate is processed in a smelting furnace into matte and slag phases, and the slag from the smelting furnace is processed in a slag cleaning furnace. The smelting furnace matte and slag cleaning furnace matte are processed hydrometallurgically in leaching, after which the recovery of leached valuable metals (Ni, Cu, Co) takes place in a common step.
This invention relates to the thermal treatment of lump or agglomerated material in a firing machine (1 ) with a travelling grate (2) on which the material is conveyed through the firing machine (1 ), a firing chamber (4) for generating the temperatures required for the thermal treatment, a cooling zone (5) in which cooling gases are passed through the thermally treated material, and a recuperation tube (7) through which the heated cooling gases are recirculated to the firing chamber (4). In the ceiling (8) of the firing chamber (4) a plurality of openings (9) is provided, through which the heated cooling gases from the recuperation tube (7) can enter into the firing chamber (4).
The present invention relates to interface level measurements in a tank or container comprising different material layers and especially to flotation processes which are especially applied in mineral industry. The method according to the invention comprises analyzing material in a container (10) comprising slurry (11a) and/or froth (11b) and/or gas and/or a transitional area between the froth (11b) and the slurry (11a), using at least one probe (12) comprising a plurality of electrodes (12') capable of being in contact with the material (11a, 11b), injecting and measuring currents or voltages through at least two electrodes (12'), and determining the conductivity distribution for the material (11a, 11b) using model based calculations, which comprise reconstruction of a vertical conductivity profile among the material (11a, 11b).
G01F 23/26 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p. ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme en mesurant des variables physiques autres que les dimensions linéaires, la pression ou le poids, selon le niveau à mesurer, p. ex. par la différence de transfert de chaleur de vapeur ou d'eau en mesurant les variations de capacité ou l'inductance de condensateurs ou de bobines produites par la présence d'un liquide ou d'un matériau solide fluent dans des champs électriques ou électromagnétiques
B03D 1/02 - Procédés de flottation par formation d'écume
G01N 27/02 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance
The present invention provides an apparatus (1) for deaerating a feed fluid, the apparatus comprising a chamber (3) for separating said feed fluid into a first component (11) substantially comprising froth or gas and a second component (12) substantially comprising deaerated liquid or sludge; an opening (6) for fluid flow from said separating chamber (2), and a device (7) for restricting fluid flow through said opening, wherein said opening (6) and said flow restricting device (7) induce a rotational flow of said feed fluid in said separating chamber such that said rotational flow generates a centrifugal vortex to separate said feed fluid into said first component (11) and said second component (12). A method of for deaerating a feed fluid is also provided.
A heat exchanger, in particular for use in the contact group of a sulfuric acid plant, includes a chamber (2) in which a tube bundle (12) is arranged on a circular ring, wherein between the tube bundle (12) and a chamber casing (13) surrounding the tube bundle (12) a gas space (15) is formed, a gas supply opening (6) provided in the chamber casing (13) for introducing a gas into the gas space (15) substantially radially relative to the tube bundle (12), and a gas outlet opening which adjoins an interior space (16) enclosed by the tube bundle (12) in substantially axial direction. A uniform approach flow of the tube bundle (12) is achieved in that the center (ZR) of the tube bundle (12) is offset with respect to the center (ZK) of the chamber casing (13) in a direction opposite to the gas supply opening (6).
F28D 7/16 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation les canalisations étant espacées parallèlement
The invention relates to a sampling method and a sampling device for sampling dust from aa furnace for producing metals,melting metals or from exit gas ducts of said furnaces. Cooling is implemented by directly spraying pressurized cooling fluid to the gas and dust particles to quench the dust particles by direct contact of cooling fluid to the dust particles and to scrub the furnace gas in the sampling device immediately as furnace gas and dust particles enter the sampling device. The slurry of cooling fluid and dust particles is pumped, and the scrubbed gas and cooling fluid vapor are sucked out,separately. A spray nozzle (12) is arranged inside the inner tube (6) to spray pressurized cooling fluid above an inlet opening (11) through which the furnace gas and dust particles enter to the inner tube. The slurry of cooling fluid and dust particles are collected on the bottom (3) of the outer tube (1) from which it can be discharged by pumping via the gap (7) to an outlet opening (5), the slurry flowing in the gap (7) cooling the inner tube (6) and the outer tube (1).
For adjusting the burn-through point (D) in a sintering machine (1), in which the material to be sintered is charged onto a conveying path (3), ignited and transported past windboxes (6) arranged in conveying direction (F) up to a material dump (5), the temperature is measured at at least three measurement points (10) consecutively arranged along the conveying path (3) and the conveying speed of the sintering machine (1) is adjusted in dependence on the position of the maximum measured temperature (D(i)) relative to the position of the selected burn-through point (D) on the conveying path. The profile of the temperature of three consecutively arranged measurement points (10) is compared, wherein a maximum of the temperature is assumed when the first and third measurement points (10) in conveying direction (F) have a lower temperature value than the second measurement point (10), and wherein no maximum of the temperature is assumed when all measurement points (10) form an ascending series of temperature values. With an assumed maximum of the temperature, the conveying speed is adjusted in dependence on a deviation between the position of the measurement point with the maximum temperature value (D(i)) and the position of the selected burn-through point (D), whereas with no assumed maximum of the temperature the conveying speed is reduced by a specified value.
A lance for conducting a pyrometallurgical operation by top submerged lancing (TSL) injection, has inner and outer substantially concentric pipes. The lower end of the inner or at least a next innermost pipe is set at a level relative to the lower end of the outer pipe required for the pyrometallurgical operation. The relative positions of the inner and outer pipes are longitudinally adjustable to enable the length of the mixing chamber to be maintained at a desired setting during a period of use to compensate for the lower end of the outer pipe wearing and burning back.
An off-gas channel (1) of a closed-type smelting furnace (2), the off-gas channel (1) comprising a first end (3) opening to the upper part of the smelting furnace (2) and a second end (4) opening to a gas cleaning apparatus (5) for leading the furnace off-gases to the gas cleaning apparatus. The off-gas channel com prises at least one cleaning nozzle (6, 7, 8, 9) adapted to spray pressurized fluid to the inner surface of the off-gas channel.
F27D 25/00 - Dispositifs pour enlever les incrustations
F23J 15/04 - Aménagement des dispositifs de traitement de fumées ou de vapeurs des purificateurs, p. ex. pour enlever les matériaux nocifs utilisant des fluides de lavage
29.
PERMANENT CATHODE AND A METHOD FOR TREATING THE SURFACE OF A PERMANENT CATHODE
The invention relates to a permanent cathode (1) to be used as an electrode in the electrowinning of metals, including a permanent cathode plate (4) at least partially made of steel and providing the possibility of electrochemically depositing metal from an electrolytic solution onto its surface (6), in which case the dimensions of the grain boundaries (7) on the surface (6) of the permanent cathode plate (4) are arranged to be suitable for the adhesion of deposited metal on the surface and the stripping of metal from the surface at least in a part of the surface that is in contact with the electrolyte. The invention also relates to a method for treating the surface of a permanent cathode.
An air distribution and mixing device is arranged in the vicinity of the bottom of a flotation cell for distributing air to the slurry for forming froth and mixing the slurry in the flotation cell. A rotor part of the air distribution and mixing device has air distribution apertures and is attached to the lower end of a drive shaft extending vertically in the flotation cell. The drive shaft has a hollow interior, which constitutes a flow channel for conducting flotation air to the air distribution holes of the rotor part. An electric motor for rotating the drive shaft is supported by a separate supporting framework, which is on top of the flotation cell. The electric motor is a permanent magnet motor having a vertical rotor shaft, the lower end of which is in permanent contact directly with the upper end of the drive shaft.
The invention relates to an equipment to prepare ore concentrate for pelletizing and sintering/indurating of pellets in ferroalloys production. The equipment comprises a grinder (1) arranged to grind the concentrate to a predetermined grain size. The equipment further comprises a drying apparatus (2, 3, 4) arranged to dry the concentrate before and/or during grinding by the grinder (1).
The invention relates to a method for a continuous fabrication of bio-coke briquettes suitable for use in metallurgical industry by a method where the purpose is to obtain bio-coke having sufficient strength, low ash content as well as low phosphorus and sulphur content and a suitable lump size.
C10L 5/44 - Combustibles solides à base essentielle de matières d'origine non minérale de matières végétales
C10B 53/02 - Distillation destructive spécialement conçue pour des matières premières solides particulières ou sous forme spéciale de matières contenant de la cellulose
The invention relates to a burner arrangement comprising a fluid cooled copper block. Further, the invention relates to a burner assembly, a duct element, a gas circulating duct, and a metallurgical furnace comprising said burner arrangement. The burner arrangement (B) comprises a fluid cooled copper block (3) including a cooling conduit (4) for circulation of the cooling fluid, a first end (5) to which the burner unit (1) is releasably attached and a second end (6), and that the burner channel (2) extends inside the fluid cooled copper block (3) from the first end (5) to the second end (6).
The invention relates to a method for continuous production of charcoal suitable for use in the metallurgical industry by a method where the purpose is to obtain charcoal having sufficient strength, low ash content as well as low phosphorus and sulphur content.
C10L 5/44 - Combustibles solides à base essentielle de matières d'origine non minérale de matières végétales
C10B 53/02 - Distillation destructive spécialement conçue pour des matières premières solides particulières ou sous forme spéciale de matières contenant de la cellulose
For producing fuel gas and for carrying out a metallurgical process, carbonaceous materials, e.g. coal or biomass, are reacted with an oxygen-containing gas in a first process stage to obtain a fuel gas containing carbon monoxide, hydrogen, carbon dioxide and/or steam, wherein the fuel gas obtained is cooled to a temperature of 300 to 600 °C, preferably 350 to 450 °C, and subsequently subjected to a solids separation, and wherein in a second process stage the fuel gas is charged to at least one burner of the metallurgical process. The fuel gas from the solids separation is directly supplied to the at least one burner of the second process stage, wherein after cooling the temperature of the fuel gas is maintained within the range from 300 to 600 °C, preferably 350 to 450 °C, by minimizing the heat losses and/or heat supply.
A method and apparatus for fabricating an oxygen-free copper product (P), such as oxygen-free copper wire, tube or rod, from copper oxide powder. The method comprises the reduction and melting of copper powder, and casting of molten oxygen-free copper into a copper product (P). Copper oxide is melted in an induction crucible furnace (1) and the oxygen-containing melt is reduced by bringing it into contact with a carbon-containing material (c). The apparatus includes an induction crucible furnace (1), which is arranged to function as a melting and reduction furnace for melting copper oxide into an oxygen-containing melt and reducing the oxygen-containing melt.
F27B 14/06 - Fours à creusetsFours à bassin chauffés électriquement, p. ex. creusets à induction, avec ou sans une autre source de chaleur
F27B 19/04 - Combinaisons de différents genres de fours qui ne sont pas tous couverts par un seul des groupes principaux disposés pour un travail conjugué
Plant for the treatment of bulk materials, such as iron or zinc ore pellets or sinter material, wherein the pallet car (3) are continuously conveyed by means of a lifting wheel (10) and a lowering wheel on rails (8, 9) in an endless chain, an outer curve link (16) of the rail (9) can be opened in the region of a bottom strand of the lifting wheel (10), in order to remove the pallet car (3) from the chain. In the region of the top strand of the lifting wheel (10) an outer curve link (20) of the rail (9) can be opened, in order to insert a new pallet car (3) into the chain. In the region of the bottom strand of the lifting wheel (10) a removal switch (30) is provided, via which a pallet car (3) can be moved out from the chain, while in the region of the top strand of the lifting wheel (10) a supply switch is provided, via which a pallet car (3) can be moved into the chain.
B65G 35/08 - Transporteurs mécaniques non prévus ailleurs comportant un train de porte-charges non reliés, p. ex. des sections de courroie, déplaçables sur un circuit, p. ex. un circuit fermé, adaptés pour venir au contact les uns des autres et être mus par des dispositifs venant successivement en prise avec chaque porte-charges
F27B 21/06 - Machines à fritter des fibres sans fin
38.
PROCESS AND SYSTEM FOR RECOVERY OF THERMAL ENERGY FROM A STEAM DRYER
The invention concerns a method for the recovery of thermal energy from a steam dryer 2 with a closed circulation 2.1 that produces excess steam SS characterised in that the excess steam SS is condensed to an unclean condensate UC in a steam regeneration unit 3 and in that thermal energy in the unclean condensate UC is recovered by being transferred to a district heating medium HW in a heat exchanger 4 for district heating. The invention concerns also a system for the recovery of thermal energy from a steam dryer 2 with a closed circulation 2.1.
F26B 25/00 - Parties constitutives d'application générale non couvertes par un des groupes ou
F26B 3/08 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air le gaz ou la vapeur s'écoulant à travers le matériau ou les objets à sécher de façon à les rendre lâches, p. ex. pour former un lit fluidisé
F26B 17/10 - Machines ou appareils à mouvement progressif pour le séchage d'un matériau en vrac, à l'état plastique ou sous forme fluidisée, p. ex. granulés, fibres brutes le mouvement étant réalisé par des courants de fluides, p. ex. provenant d'une tuyère
This invention relates to a clinker substitute, methods for producing the same, the use thereof, construction materials such as cement, mortar and concrete containing the clinker substitute, and methods for producing these construction materials.
The invention relates to a method for precipitating pentavalent calcium arsenate from an acidic solution, in which arsenic is at least partially in trivalent form. The acidic solution is neutralised before being routed to an arsenic oxidation stage,and a poorly soluble calcium-arsenic compound is precipitated from the solution, in which all the arsenic is pentavalent.
The invention relates to a method for fabricating a copper product hydrometallurgically from a raw material containing copper sulphide for the further pyrometallurgical refining of the product. In the method a raw material containing copper sulphide is leached countercurrently with hydrochloric acid and an oxygen-bearing gas in a calcium-containing solution in order to form a copper(I) chloride solution. The copper is precipitated from the copper(I)chloride solution as copper(I)oxide using a calcium compound and the copper(I) oxide that is formed is routed to further pyrometallurgical refining. The copper-depleted calcium chloride solution formed in the copper (I) oxide precipitation stage is regenerated by means of sulphuric acid into hydrochloric acid, which is routed to copper sulphide concentrate leaching.
The invention relates to a method for roasting nickel sulphide produced by precipitation into nickel oxide in a fluidized bed furnace. The precipitated, very fine-grained nickel sulphide precipitateis micropelletized and the micropellet- ized precipitateis routed to fluidized bed treatment. Fluidized bed treatment may take place in a single fluidized bed furnace, in which there is a circulating fluidized bed,or in two fluidized bed furnaces in which there is a bubbling fluid- ized bed.
The invention relates to a method for separating nickel and other valuable metalsparticularly from material having low nickel content, which contains iron and magnesium in addition to nickel and other valuable metals.The material havinglow nickel content is subjected to pulpingand atmospheric leaching in acidic and oxidising conditions, in which the majority of the metals in themate- rialdissolve and the iron is partially precipitated. The precipitated iron is sepa- rated from the solution, after which nickel and the other dissolved valuable metalsare precipitated as sulphides.
The present invention concerns a process and a plant for treating ore concentrate particles containing valuable metal and having at least arsenic and sulfur containing components. The process comprises a two-stage roasting process comprising a first roasting step (1) made in a first roasting reactor (16) and a second roasting step (3) made in a second roasting reactor (17). A gas mixture is formed from the first process gas component (2) obtained from the first roasting step(1)and from the second process gas component (4) obtained from the second roasting step (3). Post combustion of the gas mixture is made in a post combustion chamber (6). The post combustion operates with said reducing and sulphide rich first process gas component (2) and the second process gas component (4) as oxidizer gas in order to decompose SO3 in the gas mixture to reduce the SO3 content. The risk of accretion formation and corrosion in the post combustion chamber and in subsequent steps is reduced. Finally the exit gas (7) is exposed to subsequent gas cooling and dust removal steps (8 to 11).
A pump (1) for mixing two or more mutually insoluble liquid phases together into a dispersion and for feeding the dispersion into a mixer (2) and on into a solvent extraction settler (3). The inner space of the blade wheel housing (12) is bound in the upward direction by a cover plate (19), in which there is a central shaft bushing (21) for the drive shaft (16)sealed with a mechanical shaft seal (20); and that thedischarge channel (18) opening is in the sidewall (13) of the blade wheel housing (12).
F04D 1/00 - Pompes à flux radial, p. ex. pompes centrifugesPompes hélicocentrifuges
C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
46.
A SYSTEM OF GAS DUCTS FOR TRANSPORTING GAS, EQUIPMENT AND METHOD FOR ELECTROLYTIC RECOVERY OF METAL
The invention concerns a system of gas ducts (6) for transporting gas, for example, into electrolytic equipment, in connection with which there are means (13) for taking at least gas into the system of gas ducts, whereby there is a suitable number of gas supply holes (7) in the system of gas ducts in a wall (19) limiting the system of gas ducts, whereby the material, such as gas, flowing in the system of gas ducts (6) is prevented at least in part from passing through the wall (19) of the system of gas ducts (6). The invention also concerns equipment and a method for electrolytic recovery of metal, such as copper.
C25C 1/06 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions des métaux du groupe du fer, de métaux réfractaires ou du manganèse
47.
PROCESS AND PLANT FOR PRODUCING ALUMINA FROM ALUMINUM HYDROXIDE
In the production of alumina from aluminum hydroxide, a) aluminum hydroxide is purified with washing water in a hydrate filter, b) the purified aluminum hydroxide is at least partly dried and/or precalcined in at least one preheating stage, c) this pretreated aluminum hydroxide is calcined in a fluidized-bed reactor to obtain alumina, d) the alumina obtained is cooled in at least one indirect cooling stage using water as coolant, e) the steam (D) obtained from the cooling water due to the heat transfer in the indirect cooling stage is separated from the liquid fraction (A) of the exit stream from the cooling stage (E), f) and at least one partial stream (T) of the liquid fraction (A) is guided to the hydrate filter and used there as washing water for purifying the aluminum hydroxide in the hydrate filter. In accordance with the invention, an additional water stream (Z) is added to the partial stream (T) of the liquid fraction (A) guided to the hydrate filter and the mixing ratio of the two streams (T, Z) is adjusted such that the washing water stream (W) resulting therefrom has a constant maximum temperature value below the boiling point of water and the volume flow required by the hydrate filter as washing water.
C01F 7/44 - Déshydratation de l’oxyde ou de l'hydroxyde d'aluminium, c.-à-d. toutes les conversions d'une forme en une autre impliquant une perte d’eau
48.
METHOD FOR CONTROLLING THERMAL BALANCE OF A SUSPENSION SMELTING FURNACE AND SUSPENSION SMELTING FURNACE
The invention relates to a method for controlling the thermal balance of a suspension smelting and to a suspension smelting furnace. The suspension smelting furnace, comprising a reaction shaft (1), a lower furnace (2), and an uptake (3), wherein the reaction shaft (1) having a shaft structure (4) that is provided with a surrounding wall structure (5) and a roof structure (6) and that limits a reaction chamber (7), and wherein the reaction shaft (1) is provided with a concentrate burner (14) for feeding pulverous solid matter and reaction gas into the reaction chamber (7). The shaft structure (4) of the reaction shaft (1) is provided with cooling means (8) for feeding endothermic material into the reaction chamber (7) of the reaction shaft (1).
The invention relates to an arrangement of a measuring window in a continuously operated X-ray analyzer (1), said analyzer being is used particularly for analyzing elemental contents in solid, liquid or slurry-like materials; which measuring window (2) separates the sampling space (3) containing the sample material to be measured and the measurement space (4) containing the measuring probe (11), and is sealed by a lid structure (6) arranged in the sampling space, said lid structure defining the measurement aperture (7) of the sampling space, in which case the lid structure defining the measurement aperture of the sampling space is provided with a sealing surface (8) of the measuring window, so that said surface is at least partly planar and at least partly curved.
The invention relates to a method for treating a solution containing zinc sulphate, so that at least one of the rare metals such as indium, gallium and germanium can be separated from it. A portion of the metals to be separated can be precipitated from zinc sulphate solution by neutralizing the acidic solution and at least a portion is cemented by means of metal powder. The solid precipitates that are formed can be combined and treated subsequently in some suitable way to leach out the desired metals.
C22B 3/46 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés chimiques par substitution, p. ex. par cémentation
C25C 1/16 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions du zinc, du cadmium ou du mercure
Process for the Combustion of a Liquid For the combustion of a liquid in a combustion chamber the liquid is atomized by means of a rotary atomizer and introduced into a combustion chamber, where it is evaporated and subsequently burnt. The liquid is charged onto the inside of a cup, wherein due to the rotation of the cup a liquid film is formed on its inside and parts of the liquid film are radially flung off from the cup edge into the combustion chamber. In accordance with the invention the thickness of the liquid film in the cup is controlled by varying the rotational speed of the cup such that a thickness between 200 and 1000 µm is adjusted.
F23D 11/06 - Brûleurs à pulvérisation directe de gouttelettes de liquide ou de liquide vaporisé dans l'enceinte de combustion la pulvérisation étant obtenue par une action centrifuge à axe horizontal
52.
CONTROL METHOD OF A FLOTATION MACHINE THAT IS USED IN METALLURGICAL PROCESSES
The invention relates to a method of using a flotation machine that is used in metallurgical processes and to a flotation machine. The flotation machine foams hydrophobic particles from anaqueous slurry that contains these particles. The flotation machine includes a flotation cell (1), and a rotor (2) that is inside the flotation cell. The rotor (2) is rotated at a mixing power, which maintains the suspension in the slurry and mixing of air with the slurry to form the foam, and the mixing power is controlled by adjusting the rotation speed of the rotor. The amount of solid matter S accumulated on the bottom of the cell (1) is determined, and the rotation speed of the rotor (2) is adjusted on the basis of the determined amount of solid matter. The flotation machine includes a measuring device (5) for determining the amount of solid matter accumulated on the bottom of the cell. The adjusting device (4) is arranged to adjust the rotation speed of the motor (3), which rotates the rotor (2), on the basis of the measuring result of the measuring device (5) to remove the solid matter from the bottom of the cell.
B03D 1/16 - Machines de flottation à propulseursMachines à subaération
B03D 1/02 - Procédés de flottation par formation d'écume
G01F 23/28 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p. ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme en mesurant des variables physiques autres que les dimensions linéaires, la pression ou le poids, selon le niveau à mesurer, p. ex. par la différence de transfert de chaleur de vapeur ou d'eau en mesurant les variations des paramètres des ondes électromagnétiques ou acoustiques, appliquées directement au liquide ou au matériau solide fluent
53.
Froth flotation method and an apparatus for extracting a valuable substance from a slurry
In a froth flotation method and apparatus an upwardly open circular trough (4) having outlets (5) on the outer periphery of the trough is arranged horizontally above the froth phase (F) so that the trough is coaxial with the flotation vessel (1), and said circular trough is rotated around its center axis. A stationary water pipe (6) is arranged above the trough (4). Fresh water (W) is fed via the water pipe (6) into the trough (4) while the trough is rotating, and the water is let to flow by gravity and centrifugal force from the trough (4) via the outlets (5) into the froth phase (F).
The invention relates to a method and equipment for starting up a strand sintering furnace (1). During start-up, the sintering furnace is heated in order to create suitable production temperatures in the different process zones (I-VII) having different temperatures, said zones including a drying zone (I), a heating zone (II), a sintering zone (III), an equalizing zone (IV), a first cooling zone (V), a second cooling zone (VI) and a third cooling zone (VII).During start-up, the cooling gas to be conducted to the second cooling zone (VI) is heated by means of a heating device (3) up to a temperature that is higher than the ambient temperature.
The invention relates to a method and equipment for the continuous sintering of mineral material in a sintering furnace (S). In the method, a material bed (2) is formed on a conveyor base (1), the material bed (2) is conveyed by the conveyor base (1) through the process zones (I- VII) of the sintering furnace that have different temperatures, the zones including at least one drying zone (I), at least one cooling zone (VII), and at least one other process zone (II, III, IV, V, VI) between the said drying zone and cooling zone, and gas is conducted through the conveyor base and the material bed (2), when the material bed travels through the process zones (I- VII), and gas is circulated in a circulation gas duct (3) from the last cooling zone (VII) to the drying zone (I). Part of the gas flow that is conducted to the drying zone (I) in the circulation gas duct (3) is removed as an exhaust gas flow (B) by the exhaust gas blower (5) of an exhaust gas duct (4). The volume flow of the exhaust gas flow (B) is regulated by regulating the blowing power of the blower (5) to control the temperature of the gas flow travelling through the material bed in the drying zone.
F27B 21/06 - Machines à fritter des fibres sans fin
F27B 9/12 - Fours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité avec dispositions particulières pour le préchauffage ou le refroidissement de la charge
C22B 1/26 - Refroidissement des minerais grillés, frittés ou agglomérés
The invention relates to a mixing device and method by means of which two solutions that are insoluble or poorly soluble in each other are mixed together into a dispersion. The device consists of at least three helical bars rotating upwards around a shaft and supported on it, so that the support structures between the shaft and the helical rods are set essentially in a horizontal position. The device and method are particularly suitable for mixing solvent extraction solutions used in the hydrometallurgical recovery of metals to form a dispersion.
C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
A MIXER-SETTLER, AN ARRANGEMENT COMPRISING AT LEAST TWO MIXER-SETTLERS AND A METHOD FOR MEASURING AND CONTROLLING THE VOLUMETRIC O/A RATIO AND PHASE DISENGAGEMENT TIME OF ORGANIC AND AQUEOUS PHASES IN A DISPERSION
The present invention concerns a mixer-settler, an arrangement comprising a train of at least two mixer-settlers and a method for measuring and controlling volumetric O/A ratio and phase disengagement time of organic and aqueous phases in a dispersion. A continuous flow of dispersion is led via an inlet channel (6) from the uptake channel (4) though a measurement chamber (5) to an outlet channel (9) which leads the flow to the pump-mixer unit (1). At predetermined time intervals the continuous flow of dispersion is interrupted by closing the inlet and outlet valves (12, 13) to retain a sample of dispersion in the measurement chamber (5) for the measurement of the O/A ratio and phase disengagement time.
An apparatus for use in the electro-production of metals, comprising a plurality of anodes (2) and a plurality of cathodes (1) in an interleaved configuration, wherein each anode and cathode pair forms a cell; a plurality of power supplies (9), each cell associated with one or more respective power supplies; and the power supplies are arranged to control a direct current in the one or more cells to a predetermined value.
The invention relates to a suspension smelting furnace comprising a reaction shaft (1), an uptake shaft (2), and a lower furnace (3), as well as a concentrate burner (4) for feeding reaction gas and fine solids into the reaction shaft (1) of the suspension smelting furnace. The concentrate burner (4) comprises a fine solids discharge channel (5) that is radially limited by the wall (6) of the solids discharge channel, a fine solids dispersion device (7) in the fine solids discharge channel (5), an annular reaction gas channel (8) that surrounds the fine solids discharge channel (5) and is radially limited by the wall (9) of the annular reaction gas channel (8), and a cooling block (10) that surrounds the annular reaction gas channel (8). The cooling block (10) is a component that is manufactured by a continuous casting method. The cooling block (10) is attached to the arch (11) of the reaction shaft (1) and the wall (9) of the annular reaction gas channel (8), so that the discharge orifice (12) of the annular reaction gas channel (8) is formed between a structure (13), which is jointly formed by the cooling block (10) and the wall (9) of the annular reaction gas channel (8), and the wall (6) of the solids discharge channel. The invention also relates to a concentrate burner (4) for feeding reaction gas and fine solids into the reaction shaft (1) of a suspension smelting furnace.
The invention relates to a method and to an apparatus for securing together stripped metal deposit sheets (1) such as stripped metal deposit halves stripped from a mother plate of a permanent cathode used as an electrode in an electrolytic process such as metal electrowinning or metal electrorefining. The method is characterized by a step for receiving a stack (2) of stripped metal deposit sheets (1) in a welding station (3) that is provided with at least one friction stir spot welding tool (4a and 4b), and by a welding step for friction stir spot welding together at least two adjacent stripped metal deposit sheets (1) of the stack (2) of stripped metal deposit sheets (1) that is received in the welding station (3).
C25C 1/00 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions
B23K 20/12 - Soudage non électrique par percussion ou par une autre forme de pression, avec ou sans chauffage, p. ex. revêtement ou placage la chaleur étant produite par frictionSoudage par friction
A process for recovering gold from gold-bearing raw material is provided. The method comprises a step of leaching the raw material in leach solution comprising thiosulphate anions and trace amount of thallium ions.
The invention relates to a method for recovering gold by solvent extraction from an acidic chloride-containing aqueous solution or from slurry containing gold-bearing solids using a diester-based reagent that is poorly soluble in water as organic extraction solution. In accordance with the method, gold is extracted extremely effectively, but other precious metals and many other metals quite sparingly. Gold is stripped from the extraction phase with pure water, from which the gold can be reduced either chemically or electrochemically.
C22B 11/06 - Obtention des métaux nobles chloruration
C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
This invention relates to the production of hot metal, wherein granular raw materials containing iron oxide are partially reduced to a reduced mixture with a carbonaceous reducing agent in a fluidized bed reactor at a temperature of at least 850°C and via a discharge system, possibly after separation of the magnetic and non-magnetic components by hot magnetic separation, the reduced mixture is supplied to a smelting reduction unit. To optimize the energy consumption, the reduced mixture is cooled to 600°C to 800°C in a heat exchanger apparatus before being supplied to the smelting unit, wherein a preheated process gas is used as cooling medium.
A grinding mill (30) comprising a mill body (31) defining a grinding cavity (32), the mill body (31) supported at opposing sides (34a, 34b) by respective bearings (38a, 38b), a motor (50), operable to drive the mill body (32, 132) and arranged adjacent to at least one bearing (38a, 38b), and a torque transmitter. The torque transmitter has a diameter smaller than the diameter of the grinding cavity and larger than the diameter of the bearings (38a, 38b).
B02C 17/00 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
A method and apparatus for converting an iron-bearing residue generated in the hydrometallurgical process that contains small amounts of soluble heavy metals into stable form be means of a neutralising agent. The residue is elutriated and the elutriated residue is fed into at least one stabilation or homogenisation reactor (3) into which a neutralising agent is also routed, and the homogenous mixing together of the residue and neutralising agent takes place by means of a helix mixer (8), where the ratio of the diameter of the mixer to the diameter of the reactor is 0.75-0.99.
This invention relates to lowering the carbon content in ash, wherein the ash is introduced into a reactor with a carbon content of 1 to 20 wt-% and is burnt there at temperatures of 700 to 1 100°C. During the combustion, microwave radiation is fed into the reactor and the energy released during the combustion is at least partly recovered.
B01J 8/42 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés les particules étant fluidisées selon la technique du "lit fluidisé" le lit fluidisé étant soumis à l'action d'un courant électrique ou à des radiations
F23G 5/30 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets ou de combustibles pauvres avec combustion dans un lit fluidisé
B01J 19/12 - Procédés utilisant l'application directe de l'énergie ondulatoire ou électrique, ou un rayonnement particulaireAppareils à cet usage utilisant des radiations électromagnétiques
The invention relates to a method for thermally processing α-spodumene, i.e. lithium aluminum silicate, by which treatment it is transformed into β-spodumene, which is more advantageous for further processing; in the method, concentrate or ore with a grain size of 20-1,000 μm is processed in a fluidized bed reactor, at a temperature of 800-1,000 °C, by using an oxygenous gas as the fluidizing gas.
B01J 8/24 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés les particules étant fluidisées selon la technique du "lit fluidisé"
F23C 10/00 - Appareils dans lesquels la combustion a lieu dans un lit fluidisé de combustible ou d'autres particules
A method for recovering valuable metals, such as lead, silver and gold from the residue of an electrolytic zinc process, wherein the residue from the zinc process is suspended and sulfidized for converting the lead and silver compounds into sulfidic form, and further flotated for forming a flotation concentrate that contains valuable metals, wherein the sulfidizing and flotation processes are controlled electrochemically, so that the content of the sulfide ions fed in the sulfidizing stage is adjusted by means of the redox potential to a level where the grain size of the created valuable metal sulfides is sufficient for flotating them, and that the redox potential of the flotation stage is adjusted to be within a range where the collector chemical is adhered to the mineral to be flotated, but the sulfides are not oxidized.
The employed feed element in a grinding body feed apparatus of a grinding mill (17) is the grinding bodies supply tank (1) proper, in which the grinding bodies are charged from a ball hopper or storage. In connection with the supply tank (1), there is provided a grinding bodies discharge element, by means of which the grinding bodies are conducted to a duct serving as a feed chute (18) and leading to the grinding mill (17), and via said duct, to the grinding mill proper. The opening and closing of the supply tank is carried out by external, opposing control elements that encircle the drum element (5) of the supply tank (1) in relation to its frame. By means of the feed device, it is possible to feed one ball at a time to the mill (17), in which case a correct number of balls can be supplied.
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
The invention relates to a method and apparatus for thickening liquids carrying suspended particles, such as slurry containing minerals, by using a thickening apparatus (1) comprising a tank (2) whereby pulp of higher relative density tends to settle towards the bottom of the tank, forming a bed of thickened pulp (3), and dilute liquid (9) of lower relative density is thereby displaced towards the top of the tank, a feedwell (4), which includes a chamber having means for receiving fed material (5), such as slurry and at least one outlet in fluid communication with the tank and means for distributing the material in the tank, at least one feedpipe (8) for feeding the material (5), at least slurry, into the feedwell, when the feedpipe cross-sectional area for the fed material (5) is constantly varying when the flowrate inside the feedpipe (8) varies.
Vibrating machines for producing molded bodies by means of compacting granular raw mixtures in a vibratory manner for the purpose of molding in particular heavyweight anode blocks nowadays include a vibrating table which is mounted so as to be able to oscillate, onto which a molding box (12) to be filled with a raw mixture charge can be placed, on the top side of which molding box a cover (15) can be placed once a cover weight (13) has been introduced. The secure clamping of the unit of molding box/cover, which oscillates with the vibrating table, to the top side of the vibrating table (10) is important during the vibrating operation. To this end, the invention proposes clamping closures with pivot bracket (17), hydraulic pivot cylinder (18), rocker arm (19) and compression spring (20) that cooperates therewith, said compression spring being insensitive to oscillating stresses.
A fluidized bed is described and which includes a multiplicity of fluidizing manifolds positioned in spaced relation one relative to the others; an enclosure positioned in gravity receiving relation relative to the multiplicity of fluidizing manifolds and which has an intake and a discharge end, and wherein particulate matter received in the fluidized bed moves under the influence of gravity from the intake end to the discharge end, and a moveable gate is mounted on the second discharge end of the enclosure and which is operable to selectively occlude a discharge aperture and which further facilitates the selective removal of particulate matter and waste material entrained with same, and which moves under the influence of gravity to the discharge end thereof.
F23G 5/30 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets ou de combustibles pauvres avec combustion dans un lit fluidisé
F23C 10/20 - Entrées pour l'air de fluidisation, p. ex. grillesSoles
A mixer that is arranged to be used in a metallurgical process as mineral slurry conditioner or reactor. The mixer includes a container (1) comprising a vertical side wall (2) and bottom (3); and a mixer unit (4) provided with a drive shaft (5) that extends vertically in the container. The drive shaft is provided with an agitator (6); and with an electric motor (7) for rotating the drive shaft. The electric motor (7) is a permanent magnet motor provided with a vertical rotor axis (8), its lower end being fixedly connected directly to the upper end of the drive shaft (5).
A hydrometallurgical method of processing nickel containing raw material such is provided. The raw material is leached in chloride-based leaching media in a process integrated with chlorine-alkali electrolysis, solvent extraction and electrowinning process stages for producing metallic nickel. The solvent extraction stage comprises a nickel solvent extraction stage, where nickel is extracted from an aqueous solution containing high concentration of chloride. The electrolyte in the electrowinning stage is a sulphate containing aqueous liquid.
The invention relates to a method and a reactor for purifying solid matter from the process solution (2) in the fluidized bed in the reactor, into which the process solution is fed to form the fluidized bed (4) in the essentially cylindrical reaction part (3) that is the lowermost part in the reactor, from which bed the flow further moves to the calming part (5) that expands conically upwards from the upper part of the reactor part and, further, to the cylindrical clarification part (6) that is connected to the upper part of the same, the diameter of the clarification part being the same as the upper part of the calming part, whereby at least part of the solution (2) that is fed into the reactor (1) is circulated to the fluidized bed (3) more than once, and that the amount of circulating solution is controlled in the fluidized bed by means of the mixing member (12) placed in the reactor.
B01J 8/20 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés les particules étant fluidisées l'agent fluidisant étant un liquide
B01J 19/18 - Réacteurs fixes avec éléments internes mobiles
C22B 3/20 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation
C22B 3/46 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés chimiques par substitution, p. ex. par cémentation
The present invention describes a method, apparatus and computer program for detecting the locations of boundaries between different materials in a desired measurement volume. The apparatus uses at least one measuring probe, the electrodes of which are characterized in that they together form an assembly that differs from a straight line. In addition, a volume at a further distance from the assembly can also be observed by the assembly, so that measurements can be conducted remotely and, on the other hand, the apparatus stays unbroken in diverse measurement situations. By using the EIT-measurement and applying for example a so-called 1D-σ-method or methods of machine learning, electrical conductivity distributions in the measured volume are detected. As a result, the locations of the possible boundaries between different materials or for example thicknesses of different material layers are detected.
G01F 23/26 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p. ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme en mesurant des variables physiques autres que les dimensions linéaires, la pression ou le poids, selon le niveau à mesurer, p. ex. par la différence de transfert de chaleur de vapeur ou d'eau en mesurant les variations de capacité ou l'inductance de condensateurs ou de bobines produites par la présence d'un liquide ou d'un matériau solide fluent dans des champs électriques ou électromagnétiques
G01V 3/08 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection
The flotation machine includes a flotation cell (1), which comprises a vertical side wall (2) and a bottom (3), and which is upwards open. An air distribution and mixing device (4) is arranged in the vicinity of the bottom for distributing air to the slurry for forming froth and mixing the slurry in the flotation cell. The air distribution and mixing device includes a rotor part (5) that comprises air distribution apertures (6). A drive shaft (7) extends vertically in the flotation cell. The rotor part (5) is attached to the lower end of the drive shaft (7). The drive shaft comprises a hollow interior (8), which constitutes a flow channel for conducting flotation air to the air distribution holes (6) of the rotor part. An electric motor (9) is arranged to rotate the drive shaft (7). The electric motor is supported by a separate supporting framework (10), which is on top of the flotation cell. The electric motor (9) is a permanent magnet motor that comprises a vertical rotor axis (11), the lower end of which is in permanent contact directly with the upper end of the drive shaft (7).
The invention relates to the hydrometallurgical treatment of laterite ores in order to recover valuable metals. More specifically, the invention presented relates to a method for improving precipitation and solid-liquid separation in conjunction with the leaching of laterite ores. According to the method the slurry exiting the leaching of laterite ores is neutralised, after which part of the slurry is routed to solid-liquid separation. Iron is precipitated from the solid-liquid separation overflow by neutralising the solution and the solution that is formed, which includes jarosite seeds, is routed to an appropriate point in the process to control the precipitation of iron and to enhance the filterability of the solids.
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
C22B 3/20 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation
C22B 3/46 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés chimiques par substitution, p. ex. par cémentation
The present invention provides a method (20) of separating pulp from a feed material within a tank (1), the method comprising the steps of (23) introducing the feed material (22) into the tank (1); (24) allowing the feed material (22) to settle in the tank (1); (25) allowing the pulp (21) to form into aggregates (13); (26) allowing the pulp aggregates (13) to settle towards the bottom of the tank (1) and form a networked layer (2) of pulp; and (27) causing a disturbance substantially uniformly across a disturbance zone (16) in an upper region of the networked layer (2), so as to disrupt the networked pulp in the disturbance zone within a predetermined period of time; thereby releasing entrained liquid from the networked pulp in the disturbance zone (16) and increasing the relative density of the pulp below the disturbance zone. The invention also provides a separation device (40) for separating pulp (21) from a feed material (22).
The invention relates to an impeller comprising a round disk (4) and a round annular disk (5), that is provided with a round suction inlet (6) for receiving fluid inside the impeller (2)and in between the round disk (4) and the round annular disk (5) arched blades (7), which are attached to the round disk (4), and to the round annular disk (5) so that blade ducts (8) are formed in between the arched blades (7) for removing fluid from inside the impeller (2). The horizontal section shape of the arched blades (7) forms part of a circular arch (9), the center of the curvature (10) of said circular arch (9) being located at the distance 0.7R – 1.3R from the center axis (11) of the impeller (2), where R is the radius of the impeller (2). The invention also relates to a turbine device.
This invention relates to a vortex finder support for fixing a vortex finder (4) in the inlet region (2) of a cyclone (1). For this purpose a ring (5) is provided, which surrounds a waste gas conduit (3) leading out of the inlet region (2) of the cyclone (1). Through openings (5c) in the ring (5) bolts (7) can be passed into the vortex finder (4) or into a support element (6) connectable with the same.
B04C 5/13 - Structure du guide pour la phase légère, p. ex. pour faire sortir la matière en spirale ou en la dispersant formé comme un capteur de tourbillon, et s'étendant à l'intérieur de la chambre du tourbillonÉvacuation du viseur de tourbillon autrement que par le haut du cycloneDispositifs de commande de l'évacuation de la phase légère
82.
METHOD AND ARRANGEMENT FOR REMOVING GAS FROM A LIQUID
The invention relates to a method and arrangement for removing gas, particularly inert gas bubbles, from process solutions. A container (1) containing process solution is provided with means both for feeding gas and solution into a container and for removing gas and solution from the container, said container (1) comprising a separate gas removal tank (2) set therein, into which tank the solution is fed tangentially at the lower part (3) of the gas removal tank, and in which gas removal tank the solution is conducted in a helical, upwardly oriented motion, as the gas bubbles (7) are removed from the top part (14) of the gas removal tank.
The invention relates to a method for the selective recovery of uranium from a sulphate-based acidic aqueous solution of uranium containing iron and other metals by means of solvent extraction, in which the extractant used in the organic extraction solution is bis(2-ethylhexyl) phosphate and a liquid branched trialkyl phosphine oxide is the modifying agent. It is typical of the method that the uranium concentration in the feed solution is less than 50 mg/l and a reducing agent is introduced into the aqueous and/or extraction solution to prevent the permanent oxidation of iron to trivalent. In the method the majority of the extraction solution is circulated in a circuit consisting of the extraction stage and the storage tank and only a small part of the uranium-loaded extraction solution is routed to scrubbing and stripping.
C22B 3/38 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques contenant du phosphore
C22B 60/02 - Obtention du thorium, de l'uranium ou des autres actinides
A pulp lifter assembly for a rotary grinding mill includes an outer pulp lifter having walls defining a pulp lifter chamber and an outlet opening for radially inward discharge of slurry from the pulp lifter chamber, and an inner discharger disposed radially inward of the outer pulp lifter and circumferentially offset from the outer pulp lifter. The inner discharger defines a passage for conveying slurry substantially radially inward. A transition discharger is disposed radially between the outer pulp lifter and the inner discharger. The transition discharger has a first wall bounding an interior space and a second wall dividing the interior space into first and second regions. The second wall includes a guide that bounds a channel connecting the outlet opening of the outer pulp lifter to the passage defined by the inner discharger.
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
85.
METHOD AND APPARATUS FOR ADJUSTING THE CONCENTRATION OF ACIDS OR LYES
For adjusting the concentration of acids or lyes, in particular of sulfuric acid, the acid or lye is supplied through an inlet to a mixing chamber, is mixed therein with a medium for adjusting the concentration, and the concentration-adjusted acid or lye is discharged from the mixing chamber through an outlet. To achieve a uniform dilution of the acid or lye and small concentration deviations with low pressure loss, the medium for adjusting the concentration, in particular water, is charged to the acid or lye before the inlet to the mixing chamber and the acid stream or lye stream and the stream of the medium subsequently are deflected preferably by 90°.
A pulp lifter assembly for a rotary grinding mill includes an outer pulp lifter having walls defining a pulp lifter chamber and an outlet opening for radially inward discharge of slurry from the pulp lifter chamber, and an inner discharger disposed radially inward of the outer pulp lifter and circumferentially offset from the outer pulp lifter. The inner discharger defines a passage for conveying slurry substantially radially inward. A transition discharger is disposed radially between the outer pulp lifter and the inner discharger. The transition discharger has a first wall bounding an interior space and a second wall dividing the interior space into first and second regions. The second wall includes a guide that bounds a channel connecting the outlet opening of the outer pulp lifter to the passage defined by the inner discharger.
B07B 13/00 - Classement ou triage des matériaux solides par voie sèche non prévu ailleursTriage autrement que par des dispositifs commandés indirectement
Method and arrangement for producing metal powder. In the method, dissolved utility metal is mixed in a solution containing at least one intermediary metal for precipitating the dissolved utility metal into a utility metal powder (14). In the method, the first part of an acid-containing starting solution is fed on the anode side (6) of an electrolytic cell as anolyte (1), to get in contact with the anode and the supply material containing yield metal, and the second part of the acid-containing starting solution, which also contains intermediary metal, is fed on the cathode side (8) of the electrolytic cell, to get in contact with the cathode (4) as catholyte (3); yield metal is oxidized and dissolved in the anolyte (1) by leading electric current in the anode (2); the yield metal contained in the second part of the starting solution is reduced on the cathode side (8); and anolyte solution and catholyte solution are fed in a precipitating chamber (12) for mixing the dissolved, oxidized yield metal and the second part of the starting solution containing reduced intermediary metal.
B22F 9/24 - Fabrication des poudres métalliques ou de leurs suspensionsAppareils ou dispositifs spécialement adaptés à cet effet par un procédé chimique avec réduction de mélanges métalliques à partir de mélanges métalliques liquides, p. ex. de solutions
C25C 1/00 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions
When cooling acid which is withdrawn from an absorption apparatus of a sulfuric acid plant, the acid is pumped from an acid pump tank into a heat exchanger and subsequently again supplied to the absorption apparatus, wherein water as heat transport medium is heated in the heat exchanger with the heat of the acid and is at least partly converted into steam, and wherein the water is separated from the steam. It is provided that the acid is supplied to a shell space of the heat exchanger and the water is supplied to heat transfer elements arranged in the shell space and at least partly converted into steam, that the steam generated in the heat exchanger is separated from water in a steam drum, and that the water thus obtained is recirculated to the heat exchanger by means of a pump.
The invention relates to a method for treating the leaching residue containing iron and sulphur that is generated in the leaching of a sulphidic non-ferrous metal concentrate. The sulphur-containing leaching residue or part of it is routed to fluidized bed treatment, in which the sulphur contained in the leaching residue is burnt to form sulphur dioxide and the valuable metals contained in the leaching residue are recovered, mostly as oxides, and routed to a metal recovery process.
C22B 3/20 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation
C01B 17/52 - Préparation de l'anhydride sulfureux par grillage de sulfures
F23G 7/04 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets particuliers ou de combustibles pauvres, p. ex. des produits chimiques de liqueurs résiduelles, p. ex. de liqueurs au sulfite
B01J 8/24 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés les particules étant fluidisées selon la technique du "lit fluidisé"
C22B 19/20 - Obtention du zinc autrement que par distillation
The invention relates to a metallurgical furnace, comprising a furnace body (1), a trunnion ring (2), and a pedestal structure (3). The furnace body (1) is arranged in the trunnion ring (2) rotatably about a rotation axis (A) by means of a supporting arrangement (4) comprising a bearing arrangement (5) between the trunnion ring (2) and the furnace body (1). The supporting arrangement (4) comprises a first connection frame means (7) between the second connection frame means (8) between the bearing arrangement (5) and the trunnion ring (2). The second connection frame means (8) is connected to the trunnion ring (2) by a first attachment (9) providing for movements between the second connection frame means (8) and the trunnion ring (2).
The present invention relates to the production of geopolymers from oil shale and/or mineral residues, which originate from the production of oil by means of oil shale. To use the residues left in the combustion of oil shale for the production of geopolymers, the oil shale and/or also mineral residues, which originate from the production of oil by means of shale are burnt and subsequently ground, before they are mixed with an alkaline activator and water and cured.
C04B 7/30 - Ciments produits à partir de schistes bitumineux, de déchets ou de résidus autres que des scories à partir de schistes bitumineuxCiments produits à partir de schistes bitumineux, de déchets ou de résidus autres que des scories à partir de résidus de schistes bitumineux
C04B 28/02 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments hydrauliques autres que ceux de sulfate de calcium
92.
METHOD AND APPARATUS TO CREATE UNIFORM MIXING IN CONNECTION WITH A HYDROMETALURGICAL PROCESS
The invention relates to a method and apparatus for mixing one or several solutions in a reactor (3) in conjunction with a hydrometallurgical process, such as precipitation, crystallisation or forming a suspension in solvent extraction. Mixing with a vertical circulation flow is created in the reactor by means of a multi-part mixer (1), so that the primary mixing zone in which the mixer rotates is over 70 % of the effective volume of the reactor, whereby the homogenous, low-intensity mixing needed for precipitation, crystallisation and/or the mixing stage of solvent extraction is achieved.
B01F 7/24 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec agitateurs tournant autour d'un axe vertical à vis sans fin
C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
93.
ARRANGEMENT FOR EVENING OUT POWDERY SOLID MATTER FEED OF A CONCENTRATE BURNER OF A SUSPENSION SMELTING OR SUSPENSION CONVERTING FURNACE
The object of the invention is an arrangement for feeding powdery solid matter into a concentrate burner (2) of a suspension smelting or suspension converting furnace (1). The concentrate burner (2) comprises reaction gas feeding means (6), powdery solid matter feeding means (3) and a concentrate distributor (7). The arrangement comprises a first powdery solid matter discharge pipe (8) for feeding powdery solid matter into the powdery solid matter feeding means (3) of the concentrate burner (2). The first powdery solid matter discharge pipe (8) is provided with a first partition (10), which divides solid matter, for dividing the first powdery solid matter discharge pipe (8) into two essentially similar discharge pipe parts (11). The powdery solid matter feeding means (3) of the concentrate burner (2) comprise an annular concentrate discharge channel (4) that surrounds the concentrate distributor (7) of the concentrate burner. Each discharge pipe part (11) of the first powdery solid matter discharge pipe (8) is at least partly divided into two discharge pipe portions (12) by a second partition (13).
A method and equipment for separating solids from slurry containing a suspension of liquid and fine solid particles. An amount of liquid flocculant is added to the slurry that is considerably smaller than the amount of slurry. The slurry and flocculant are mixed with a mixer (1) to bring about contact between the fine solid particles and the flocculant in order to bind the fine solid particles to each other as floes. The solids and liquid of the flocculated slurry are separated from each other with a separation device (2) in a separate process stage after the flocculation stage. The flocculant is gently mixed into the slurry with a helical rotor mixer (1) at a low mixing intensity, giving the mixture in the cylindrical tank of the mixer a vertical macrocirculation flow and simultaneously creating in it smaller turbulent microflows without essentially subjecting the mixture to shear forces in order to avoid breaking up the floes. The method and equipment are extremely practical in the treatment of the fine tailings generated in oil sands refining.
C02F 11/14 - Traitement des boues d'égoutDispositifs à cet effet par déshydratation, séchage ou épaississement avec addition de produits chimiques
B01D 21/01 - Séparation par sédimentation de particules solides en suspension dans des liquides en utilisant des agents de floculation
B03B 9/02 - Disposition générale d'un atelier de séparation, p. ex. schéma opératoire spécialement adapté aux séparations pétrole/sable, pétrole/craie, pétrole/schistes, ozokérite, bitume ou similaires
B01F 7/24 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec agitateurs tournant autour d'un axe vertical à vis sans fin
B01F 7/16 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec agitateurs tournant autour d'un axe vertical
95.
METHOD FOR THE REMOVAL OF CHLORIDE FROM ZINC SULPHATE SOLUTION
The invention relates to a method for removing chloride from zinc sulphate solution in conjunction with zinc production. According to the method, the chloride is removed from solution by means of monovalent copper, which is produced in a separate copper(l) oxide formation stage, in which the pH is regulated to the region of 4.5 - 5.
C22B 3/46 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés chimiques par substitution, p. ex. par cémentation
C22B 19/20 - Obtention du zinc autrement que par distillation
To provide an installation for producing a coal cake suitable for coking which can in principle have any desired formats, but in particular also very large formats adapted to large-format coking oven chambers, it is proposed according to the invention, for the vibratory compaction of granular raw coal materials, to arrange at least one vibrating station (10 or 16) with a push-table vibrating machine with an oscillatorily mounted vibrating table on which a mould box to be filled with a batch of the raw coal material can be clamped, the successively vibration-compacted cuboidal coal blocks being stackable and a transporting device introducing the coal cake that can be put together from a multiplicity of coal blocks into an empty coking oven chamber for the purpose of coking and coke production.
C10B 45/02 - Dispositifs pour produire, hors du four, des charges de houille compactes et homogènes
B30B 11/02 - Presses spécialement adaptées à la fabrication d'objets à partir d'un matériau en grains ou à l'état plastique, p. ex. presses à briquettes ou presses à tablettes utilisant un pilon exerçant une pression sur le matériau dans une cavité de moulage
97.
METHOD OF CONTROLLING THE THERMAL BALANCE OF THE REACTION SHAFT OF A SUSPENSION SMELTING FURNACE AND A CONCENTRATE BURNER
The invention relates to a method of controlling the thermal balance of the reaction shaft of a suspension smelting furnace and to a concentrate burner for feeding reaction gas and pulverous solid mater into the reaction shaft of the suspension smelting furnace. In the method, endothermic material (16) is fed by the concentrate burner (4) to constitute part of the mixture formed from the powdery solid matter (6) and reaction gas (5), so that a mixture containing the powdery solid matter (6), reaction gas (5) and endothermic material (6) is formed in the reaction shaft (2). The concentrate burner (4) comprises cooling agent feeding equipment (15) for adding the endothermic material (16) to constitute part of the mixture, which is formed from the pulverous solid matter (6) that discharges from the orifice (8) of the feeder pipe and the reaction gas (5) that discharges through the annular discharge orifice (14).
The invention relates to a busbar construction (6) between the first and second electrolysis tanks (A, B) intended for the electrolytic recovery of metals, the busbar construction (6) being placed on top of the side wall (5) between the first and second electrolysis tanks (A, B), the first and second electrolysis tanks (A, B) containing electrodes, such as anodes (1) and/or cathodes (2), the electrodes having a first bracket member (3a, 4a) and a second bracket member (3b, 4b), the electrodes being supported to the busbar construction (6) by means of the first and second bracket members (3a, 3b, 4a, 4b), the busbar construction (6) including a main busbar (8) and a first support member (9) and a second support member (10).
The invention relates to a method of feeding a fuel gas into the reaction shaft of a suspension smelting furnace and to a concentrate burner for feeding a reaction gas and fine solid matter into the reaction shaft of the suspension smelting furnace. In the method, fuel gas (16) is fed by the concentrate burner (4) to constitute part of the mixture formed by the pulverous solid matter (6) and the reaction gas (5), so that a mixture containing the pulverous solid matter (6), reaction gas (5) and fuel gas (6) is formed in the reaction shaft (2). The concentrate burner (4) comprises fuel gas feeding equipment (15) for adding the fuel gas (16) to constitute part of the mixture that is formed by fine solid matter (6) and reaction gas (5).
The invention relates to a method of using a suspension smelting furnace and to a suspension smelting furnace and to a concentrate burner (4). The concentrate burner (4) comprises a first gas supply device (12) for feeding a first gas (5) into the reaction shaft (2) and a second gas supply device (18) for feeding a second gas (16) into the reaction shaft (2). The first gas supply device (12) comprises a first annular discharge opening (14), which which is arranged concentrically with the mouth (8) of a feeder pipe (7), so that the first annular discharge opening (14) surrounds the feeder pipe (7). The second gas supply device (18) comprises a second annular discharge opening (17), which is arranged concentrically with the mouth (8) of the feeder pipe (7), so that the second annular discharge opening (17) surrounds the feeder pipe (7) opening (14).
