Verfahren zum Betrieb eines Ofens

Improvements in or relating to Reverberatory Furnaces for use in the Recovery of Zinc from Dross.

... 124,978. Wilkes, J., and Harris, H. E. June 26,1918. Reverberatory furnaces.-In a furnace for the recovery of zinc from dross, two fire-places a. b are provided, the former for heating the hearth c on to which the dross is fed, while the flames from the latter pass through the flue k, and heat the molten metal collected in the wells f. . If desired, the wells may also be heated from beneath.

Improvements in or relating to blast furnaces

In the operation of a zinc blast furnace of the kind which is hermetically sealed at the top, air being introduced both at the top and at the bottom of the furnace with an outlet for the furnace arranged in between, the air introduced at the top of the furnace is introduced into a space above the charge in such quantity as is insufficient to cause substantial slagging of the charge in the upper part of the furnace. Thus not more than 60 per cent of the air used may be introduced at the top of the furnace, the remainder being introduced at the bottom. Part of the charge may be in the form of oxidized zinciferous material briquetted with carbonaceous material. A reactive coke or other highly reactive carbonaceous material may be included in the charge.

Process for treating the carbonaceous residues derived from metal-volatilising processes in rotary drum furnaces

... 377,451. Materials for making producer gas. METALLGES. AKT.-GES., 45, Bockenheimer Amlage, Frankfort-on- Main, Germany. Aug. 12, 1931, No. 22790. Convention date, Aug. 13, 1930. [Class 55 (ii).] The carbonaceous residue from a rotary drum furnace, in which volatilizable metals or their compounds are heated with carbon, is discharged into a gas producer which is preferably operated to give water gas. The gases obtained may be passed into and burnt in the rotary furnace.

Process for the complete elimination of zinc from fine zinciferous ores and the like,especially zinciferous purple ores or calcined residues

... 257,133. Mond, A. L.., (Metallbank und Metallurgische Ges., Akt.-Ges.). Nov. 17, 1925. Distilling zinc.-A process for eliminating zinc from fine zinciferous ores &c., especially zinciferous purple ore or calcined residues, of the type in which the ore, after desulphurization, is subjected to a melting process to volatilize the zinc and to convert the remaining non-volatile constituents into a slag, consists in first sintering and desulphurizing the finely-divided ore &c. by one of the known sintering processes, for example in a Dwight-Lloyd furnace, reducing the product to lumps of a convenient size, and then treating it with coal or coke in a shaft or blast furnace.

Improvements in or relating to zinc-producing blast furnaces

In a method for operating a zinc-producing blast furnace which is charged with coke and sintered zinciferous materials a preheated oxygen-enriched blast is introduced at the bottom of the furnace, the blast containing 22-50% by volume of oxygen.

Procedure for the production of zinc oxide or lead zinc oxide by means of the Wetherill process.

OPERATION OF A BLAST FURNACE

Perfectionnement au procédé américain, dit Wetherill, pour la réduction de minerais métallifères.

УСТАНОВКА ДЛЯ ПОЛУЧЕНИЯ ОКИСИ ЦИНКА

Изобретение относится к области неорганической химии, в частности к технологии получения окиси цинка. Предлагаемое изобретение направлено на создание установки для получения окиси цинка, которая позволит повысить её надёжность, упростить конструкцию и получать заданный химический и гранулометрический состав окиси цинка. Устройство содержит печь, включающую тигель с пространством над расплавом, выполняющее роль окислительной камеры, а также шлюзовой питатель для загрузки цинка, систему охлаждения газов и систему улавливания готовой продукции, кроме этого в кожухе и футеровке печи выполнены специальные отверстия для прохода воздуха.

Blower furnace with continuous operation with a grid cooled for the treatment of ores or complex metallurgical products

Process for the treatment of ores and metallurgical products of any kind, containing volatilizable metals

Process for the treatment of ores of zinc, products of concentration and zinc derésidus

Method for manufacturing zinc

Process for the dressing ore and other matters containing of metals

PROCESSO DE OPERACAO DE FORNO DE REDUCAO DE MINERIOS PARA METAIS NAO FERROSOS

Method of treating body containing volatile metals

Method of treating body containing volatile metals

Process of production of zinc starting from matters zincifères with, or the furnace shaft furnace similar to direct heating

OPERATION OF A BLAST FURNACE

SHAFT FURNACE SMELTING OF OXIDIC ORES, CONCENTRATES OR CALCINES

METHOD FOR MANUFACTURING HIGH PURITY ZINC OXIDE FROM Zn DROSS, CAPABLE OF ELIMINATING TOP DROSS AND BOTTOM DROSS USING FUSED ALUMINUM BY HEATING THE TOP DROSS FIRSTLY

PURPOSE: A method for manufacturing high purity zinc oxide from Zn dross is provided to obtain the high purity zinc oxide having a high recovery factor from the Zn dross and to extend lifetime of an oxidation furnace by preventing a crack. CONSTITUTION: A method for manufacturing high purity zinc oxide from Zn dross comprises the following steps: fusing(S10) a top dross to a liquid in a melting furnace; heating(S20) the liquid top dross in an oxidation furnace; fusing(S30) a liquid dross after throwing a bottom dross into the furnace in which the liquid top dross is discharged; and collecting(S40) powdered zinc oxide after additionally throwing the liquid bottom dross into the oxidation furnace and heating the bottom dross. COPYRIGHT KIPO 2010 ...

PROCESSO PARA APERFEICOAR O RENDIMENTO OPERATORIO DE UMA FORNALHA DE ZINCO-CHUMBO

Treatment of copper-lead matte

OPERATION OF A BLAST FURNACE

Verfahren zum Austreiben des Zinks und anderer fluechtiger Metalle und Metalloide aus Erzen u. dgl.

Verfahren und Vorrichtung zur Destillation von Zink und aehnlichen Metallen

Improvements in or relating to the production of metal oxides and other compounds ofmetals

In the production of oxides such as zinc oxide or of compounds such as basic lead sulphate by the Wetherill process in which the bed fuel or the ore or the reducing agent is briquetted, as described in Specification 137,513, the bulk of the total fuel, for instance 75-85 per cent, is employed as a fuel bed of considerable thickness such as 5 or 6 inches, and the remainder is used with the ore and may be briquetted with it, the layer of ore being, for instance, 4 or 5 inches thick. By suitably controlling the admission of air to the fuel bed, the addition of reducing-agent to the ore layer may be dispensed with. When the furnacing operation is finished, the ore briquettes which have retained their form may be readily separated from the sintered fuel ash or clinker in the fuel bed for further treatment if desired, for instance for the production of spiegeleisen.

Improvements in or relating to blast furnace operation

... 1,149, 760. Extracting metals. IMPERIAL SMELTING CORP. (N. S. C. ) Ltd. June 23, 1967 [July5, 1966], No.30091/66. Heading C7D. In a method of improving the operating efficiency of a zinc-lead blast furnace into which are charged coke and a sinter containing zinc oxide and lead oxide, pre-heated oxygen-containing gas being blown in through tuyeres near the bottom of the furnace, while below these tuyeres molten lead and slag are run off, the zinc oxide in the charge being reduced to zinc vapour which is taken off and condensed, the ratio of zinc to carbon in the charge and the pre-heat temperature of the blast are controlled according to the continually monitored values of (1) the said zinc/carbon ratio (2) the said pre-heat temperature (3) the ratio of slag-forming materials to carbon in the charge (4) the composition of the furnace gases (5) the zinc content of the slag (6) the temperature of the molten slag leaving the furnace, the valves (1) to (6) being converted to electrical signals ...

IMPROVEMENTS IN OR RELATING TO THE SEPARATION OF ZINC AND CADMIUM

... 1284657 Zinc IMPERIAL SMELTING CROP (NSC) Ltd 19 April 1971 [23 March 1970] 13809/70 Heading C7D Zinc is produced by reducing materials containing Zn and Cd with carbon in a blast furnace; dividing the gases leaving the furnace into two streams, each of which is condensed in molten lead in a condensor; passing the solution leaving the first condensor into a vacuum vessel while still at the temperature at which it leaves the condensor; cooling at least part of the lead from the second condensor to separate dissolved zinc and returning the lead to the condensor; withdrawing any remainder of the lead from the second condensor and, while still substantially at the temperature at which it left the condensor, passing it. through the vacuum vessel; distilling Zn and Cd from the vessel; cooling the Pb leaving the vessel to slightly above the M. P. of Zn without ppting Zn and returning the Pb to the condensors.

Smelting Process.

... 24,009. Dedolph, E. Nov. 4, 1909, [Convention date]. Treating ores preliminarily to extracting precious metals; roasting.-Ores and slags containing lead or zinc or both are crushed, mixed with carbon and suitable fluxes, and fed to a revolving conical furnace 1 by a hopper 4. Combustible gas and air are supplied by downwardly-directed pipes 8, 9, the flame imping- ing on the material at the wider end of the furnace. The lead and zinc pass off as oxides by flues 11, 13, which may both be connected with a common flue, leading to suitable collecting-devices. Two furnaces may be worked together, the first one being worked at about 800‹ C. to volatilize lead oxide, and the second (fed with material from the first furnace with the addition of more carbon) at about 1300‹ C. to volatilize zinc oxide. The slag finally obtained contains any silver and gold present and may be smelted for those metals in a blast furnace.

Improvements in furnaces for treating molten slags

Improvements in furnaces for treating molten slags

Treatment of zinc ores

Extraction process of zinc sulfide ores of zinc and especially those which also contain copper

Method to recover by distillation zinc and other volatile metals

Extraction process of zinc sulfide ores of zinc and especially those which also contain copper

Process and installation of solid obtaining zinc starting from smoke containing of the zinc vapors

Proceeded for manufacture zinc continues, of oxide of zinc or gray of zinc

Verfahren zur Gewinnung von Zink im Schachtofen

Verfahren zur Gewinnung verfluechtigungsfaehiger Metalle

Ofen zum Verblasen zinkhaltiger Stoffe zu Zinkoxyd

Improvements in or relating to blast furnace smelting of zinciferous materials

... 817,916. Extracting metals; lead; distilling zinc. NATIONAL SMELTING CO. Ltd. Jan. 17, 1958 [March 1, 1957], No. 6917/57. Class 82(1) In a process of smelting an oxidic zinciferous material with coke in a blast furnace a molten slag is run off, of which at least 81 per cent by weight consists of iron oxide (calculated FeO). lime and silica, the weight ratios CaO/FeO and SiO 2 /FeO lying within the hexagonal area shown in Fig. 1. Where the alumina content of the slag is above 5 per cent by weight and up to 15 per cent by weight the area of the graph representing the usable slag compositions is preferably restricted. Fig. 2 and 3 (not shown) show the areas appropriate for alumina contents of 10 per cent and 15 per cent respectively. Part of the iron oxide content of the slag may be derived from pyrites which may itself contain zinc. The zinciferous material may contain lead, in which case molten lead is produced and runs from the furnace together with the molten slag.

IMPROVEMENTS IN OR RELATING TO THE SEPARATION OF ZINC AND CADMIUM

... 1284656 Zinc IMPERIAL SMELTING CORP (NSC) Ltd 19 April 1971 [23 March 1970] 13797/70 Heading C7D Zinc is produced by reducing oxidic materials containing Zn and Cd with carbon in a blast furnace, the Zn and Cd vapours produced being condensed in molten Pb; vacuum distilling Zn vapour, rich in Cd, from the Pb, then cooling the Pb to separate Zn substantially free from Cd; and recirculating the Pb. The condenser(s) may be of the lead-splash type.

Improvements in or relating to the smelting of zinc and lead-containing materials

Metalliferous materials containing substantial amounts of lead and zinc are smelted with carbonaceous material in a blast furnace, the charge and/or the air blown into the furnace being preheated to such an extent that a reducing environment is maintained throughout the smelting charge and the proportion of carbonaceous material in the charge is not substantially greater than would be required if lead compounds were omitted from the charge. The charge may be preheated to at least 600 DEG C. and the air to at least 500 DEG C. The constituents of the charge may be separately heated, the carbonaceous material to 800-1000 DEG C. and the remainder of the charge to 500-750 DEG C. A charge containing zinc enriched slag from a conventional blast furnace smelting of lead ores and lead sulphide concentrates may be treated, the lead forming, for example, 9-85 per cent of the total of lead and zinc. A suitable quantity of carbonaceous material to be used is equal to the sum of about 90 per cent of ...

Improvements in or relating to a method of smelting zinc and shaft furnaces therefor

... 742,763. Distilling zinc. NATIONAL SMELTING CO., Ltd. Sept. 9, 1954 [Sept. 29, 1953], No. 26764/53. Class 82(1). [Also in Group XII] In a process for distilling zinc in a shaft furnace oxygen containing gases are fed into the furnace in a distributed manner over a range of height of the furnace. In the drawing a shaft furnace 1, provided with charging hoppers 2 and slag tap hole 4a at the lowermost point of a sloping hearth, has air inlets 7 at the bottom and 6 at the top above the charge level and also louvred openings 10 supplied with air from wind-belt 8, the spacing and angle of the louvres being such as to minimise penetration and clogging by the descending charge. Gaseous products of the smelting operation pass through the spaces between baffles 5, which are also arranged in louvred form, and are withdrawn through outlet 12. Specifications 572,961, 665,784, 682,176 and 686,585 are referred to.

METHOD OF RECOVERING VALUABLE METALS FROM ZINC BEARING MAT- ERIALS AND BLAST FURNACE RELEVANT THERETO

Refining zinc sulphide ores

Novel method and apparatus for the production of zinc

Basin of decantation-liquation for continuous furnace of zinc refining

Process of production of metallic oxides and others composed of metals

Process and apparatus for the treatment of zinc

Improvements relating to the recovery of copper starting from mixed materials containing of copper, zinc and lead

Process for the production of zinc

Recovery of zinc from its ores

MOLTEN-METAL PRODUCTION METHOD USING VERTICAL MELTING FURNACE

PROBLEM TO BE SOLVED: To improve a concentration of zinc in dust without increasing production cost while performing stable operation, in a method of producing molten metal by melting iron-based scrap by using a vertical melting furnace. SOLUTION: Shredded iron-based scrap is used at a ratio satisfying 0.1≤A/B≤0.6 (A is amount of shredded iron-based scrap, B is the total amount of iron-based scrap). By optimizing the ratio of the shredded iron-based scrap in the total iron-based scrap, the stable operation secured in air permeability can be performed while increasing the concentration of zinc in dust. COPYRIGHT: (C)2010,JPO&INPIT ...

Шихта для переработки полиметаллических материалов

Verfahren zur Gewinnung von Zink aus zinkhaltigem Gut

Verfahren zur Gewinnung von Zink aus oxydischem zink- und bleihaltigem Material mit geringem Schwefelgehalt

Improvements in or relating to furnaces

... A gas producer has a fluid cooled grate 14 supporting a charge of lump fuel, and a chamber 17 beneath the grate to collect molten slag falling through the grate. The furnace has a fuel reservoir 28 and a gas off-take 31, and oxygen, air or enriched air passes through the grate from inlets 21 in the chamber 17, which may be heated by recycled gas, or solid or fluid fuel and has a heated outlet 20 to a quench bath 23. Air or oxygen for combustion delivered from a ring 25 in the quench bath is blown, together with entrained steam to the nozzles 21 in the slag chamber 17. The temperature of the bath 23 is kept sufficiently high to produce a steam/air mixture by pipes 34 connected in series with casing cooling tubes 13 and the cooled grate bars 15.

Improvements in the extraction of zinc

A finely divided oxidic zinciferous material which is substantially free from volatilizable arsenic and sulphur is obtained from a zinc sulphide concentrate which is heated in an inert atmosphere to a temperature within the range 950 DEG to 1150 DEG C. so as to substantially remove by volatilization any lead, tin, cadmium or arsenic, the resulting zinc sulphide concentrate being then roasted to yield the oxidic zinciferous material. Alternatively, the latter may be obtained from zinc concentrate that has been flash-roasted or oxidized in a fluidized bed. Specification 572,961 is referred to.ALSO:A method of extracting zinc from a finely divided oxidic zinciferous material which is substantially free from volatilizable arsenic and sulphur comprises introducing the zinciferous material and finely divided carbonaceous material into, and entraining them by, a moving stream of an oxygen-containing gas at such temperature that reduction to zinc vapour takes place and all other non-volatile components ...

Improvements in or relating to blast furnaces and grate-shaft furnaces for smelting zinc ores

In the extraction of zinc from oxidized ore prepared by roasting zinc blende in a manner ensuring control of the grain size, the ore is mixed with coke and the reaction takes place in a blast furnace (see Group XII). The volatilized zinc is lead off by off-takes screened against the enry of the falling charge to a condenser and molten slag is tapped off at the base of the shaft, which base is cooled by a water jacket. The charge material is preheated, preferably to 800 DEG -900 DEG C, and preheated air is supplied through tuyeres at the bottom and towards the top of the furnace shaft. A typical charge comprises the following parts measured by weight: Oxidized zinc ore 100 parts, coke 80 parts, limestone 8 parts, sand 9 parts.

Improvements in or relating to the recovery of zinc metal from a zinc blast-furnace

In a process for extraction of zinc in a blast furnace the charge (oxidic zinc/lead material and a carbonaceous reducing agent) is treated to remove at least 50% of the fines (less than 420 microns) before it enters the furnace. The fines may be sieved or screened from the charge after sintering, immediately prior raising it to the top of the furnace or preferably they may be removed by a current of air blown and/or sucked through the charge in the charging gear.

Process for the production of zinc in reverberatory furnaces

... 208,764. Mehner, H. Sept. 22, 1922. Distilling zinc. - Zinc is produced in a reverberatory furnace by heating the charge from above and conducting the reduction products, substantially free from furnace gases, downwardly through the bed of the hearth by maintaining suitable differences of pressure in the various parts of the furnace. The bed of the hearth may have the form of a grate, or perforated or porous bricks may be used. The reduction products are led away through a few collecting mains, or preferably a single main, to a central condensing plant, and the furnace is preferably provided.with a heat accumulator and enclosed in a gas-tight iron casing. Specifications 11563/91, 4537/03, 26410/09, and 5438/13 and 10376/13, [both in Class 1 (iii), Oxides &c., Metallic], are referred to.

Process of treatment of ores or made up zinciféres mixed

Improvements with the fusion of zinc out of blast furnace

Manufactoring process of zinc oxide

Method for separating minerals or metallurgical products metal vapors for the reoxidation

Treatment of zinc ores

Sophisticated process of development of tin

Improvements brought to the production of zinc and other metals

Improvements with fusion out of matter zincifères blast furnace

Process and apparatus for extracting zinc

Способ шахтной плавки окисленных цинксвинецсодержащих материалов

Verfahren und Vorrichtung zum Kondensieren von Zinkdampf

Herstellung von Zink- und anderem Metallstaub

Verfahren zur Verfluechtigung von Zink und anderen verfluechtigungsfaehigen Metallen

Improvements in or relating to the manufacture of zinc oxide

In the production of zinc oxide by blowing air through a shallow charge consisting of a mixture of coal and zinc or lead-zinc ore or the like on a bed of ignited fuel on a fixed grate of large area, the ignition fuel or the ore or the reducing coal is used in the form of briquettes, for instance of double pyramidal form on a common square base of 1 3/4 inch side, the distance between the apexes being 1 1/2 inches; or the ore and reducing fuel may be briquetted together, and some ore may be briquetted with the ignition fuel. The binding agent may be sulphite cellulose liquor and a pressure of 2000 lb. per square inch may be used in the briquetting. The briquettes are dried and baked by stacking on trays in a tunnel drier at 200 DEG C. The pressure of the blast is less than in the known process, and it may sometimes be dispensed with, the fan which draws the fume through the bag room being sufficient to draw enough air through the charge.

Improvements in and relating to the reduction of ores, oxides and the like

... .306,425. Coley, H. E. Sept. 14, 1927. Fumes, treating with liquids.-Zinc &c. vapours are condensed by admitting them through an opening c to a water jacketed tower a down which water is caused to fall from nozzles or jets in pipes e - - k arranged as shown. The separating liquid may be circulated through a settling tank or filter press and pump, and returned to the spray pipes after separation of the condensed product.

A method for manufacturing zinc with the reverberatory furnace

FUELLSCHACHT FUER EINEN GEBLAESESCHACHTOFEN FUER DIE ZINKGEWINNUNG.

Verfahren zum stetigen Verblasen loser oder brikettierter Gemische komplexer Erze und Huettenprodukte

VERFAHREN ZUR VERBESSERUNGDER LEISTUNGSFAEHIGKEIT VON ZINK BLEI HOCHOEFEN

Process and plant for obtaining solid zinc from smoke containing zinc vapour

1,139,590. Distilling zinc. SOC. METALLURGIQUE D'IMPHY. March 10, 1966 [March 11, 1965], No. 10549/66. Heading C7D. Solid zinc is obtained from the smoke emanating from a furnace heated by a flame burning in the presence of blown in oxygen (e.g. the furnaces described in Specifications 1, 083, 640 and 1, 100,420) by cooling the smoke in at least one vertical hood into which water is injected, the water and zinc being collected at the base of the hood. The zinc may be recovered from the mixture at the base of the hood by filtration and any zinc carried through the hood may be recovered by a smoke-purifier device and then remelted and refined in a known manner.

Improvements in and relating to the Production of Zinc and other Metals.

... 29,839. Pescatore, A. B. Dec. 22. Distilling zinc; dry processes of extracting lead, silver, &c.-Zinc ores are smelted in a blast furnace provided with adjustable electrodes near the centre, from which zone the zinc vapour is withdrawn, and any lead, silver, &c. present in the ore is reduced and collects in the hearth. The electrodes f, g are placed at the back of two or more series of niches j in the furnace wall, and are protected by a packing of coke &c. which ensures intimate contact with the charge. Between the electrodes is a duct k leading to a condensing-chamber l, from which any carbon monoxide &c. is led off by a valved pipe p. A second pipe q at the top of the furnace conveys to the pipe p that part of the gas which traverses, and heats up, the freshlycharged material; the gases withdrawn may be utilized to generate electric energy. Instead of a blast furnace, a gas-producer may be used. A basic lining is used in the furnace.

Improvements in or relating to the blast furnace smelting of zinciferous materials

Bauxite is added to the charge of zinciferous material in a blast furnace to reduce the zinc content of the slag. The charge and the added alumina are proportioned such that in the slag produced, calculated on the basis of the weight of the zinc-free slag, the alumina content is 9.7-17.7%, the lime content is 22-36%, the sum of the lime and silica contents is 47-64%, the weight percentage of silica does not exceed the weight percentage of lime by more than 7, the weight percentage of lime does not exceed the weight percentage of silica by more than 13 and the iron oxide content (calculated as FeO) is 16-34%. According to the Provisional Specification, slightly different proportions of alumina, lime and iron may be present in the slag and in addition not more than 11% of other oxides may be present.

Method for the recovery of zinc

The invention relates to a method for the recovery of zinc from zinc containing materials using a smelting apparatus for smelting a metalliferous feed material, wherein the smelting apparatus comprises a smelting vessel, a smelt cyclone mounted on the smelting vessel and in connection with the inside of the smelting vessel and an off-gas duct connected to the smelt cyclone, and wherein the method comprises the steps of: - injecting the feed material with a carrier gas into the smelt cyclone, - injecting an oxygen containing gas into the smelt cyclone, - injecting coal with a carrier gas into the smelting vessel, - injecting an oxygen containing gas into the smelting vessel, - optionally injecting fluxes with a carrier gas into the smelting vessel, wherein the zinc containing materials are injected into the smelt cyclone and/or into the smelting vessel.

Process of separation of zinc and other oxydable metals by steam at high temperature, their ores

SHAFT FURNACE SMELTING OF OXIDIC ORES, CONCENTRATES OR CALCINES

Process of fusion out of blast furnaces of loads rich in copper

Improvements with the blast furnaces

Improvement with the operation of the blast furnaces

METHOD FOR PRODUCING OXIDE/HYDROXIDE

Provided is a method for producing an oxide and/or hydroxide wherein the ratio of oxide and hydroxide has been controlled. The method produces an oxide, a hydroxide, or a mixture thereof, and obtains an oxide and/or a hydroxide wherein the ratio of oxide and hydroxide has been controlled by means of changing a specific condition relating to at least one fluid to be processed introduced between processing surfaces () when causing the precipitation of the oxide, hydroxide, or mixture thereof by mixing an basic fluid containing at least one type of basic substance and a fluid containing at least one type of metal or metallic substance as the fluids to be processed between the processing surfaces () that are provided facing each other, are able to approach to and separate from each other, and of which at least one rotates relative to the other. The specific condition is at least one condition selected from the group consisting of: the speed of introduction of at least one of the fluids to be processed; and the pH of at least one of the fluids to be processed. 1. A method for producing any one of an oxide and a hydroxide or both , in which at least two kinds of fluid to be processed are used ,of these at least one fluid to be processed is a fluid which contains at least one kind of a metal or a metal compound, andat least one fluid to be processed which is different from the foregoing fluid to be processed is a basic fluid which contains at least one kind of a basic substance, and further,these fluids to be processed are mixed in a thin film fluid formed between at least two processing surfaces which are disposed in a position they are faced with each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, thereby producing any one of the oxide and the hydroxide or both by separating the oxide, the hydroxide, or a mixture of them, whereinthis separation accompanied with a controlled ratio of the oxide to ...

METHOD FOR THE RECOVERY OF ZINC

A method for the recovery of zinc from zinc containing materials using a smelting apparatus for smelting a metalliferous feed material, wherein the smelting apparatus includes a smelting vessel, a smelt cyclone mounted on the smelting vessel and in connection with the inside of the smelting vessel and an off-gas duct connected to the smelt cyclone, and wherein the method includes the steps of: 2. The method according to claim 1 , wherein the zinc containing materials injected into the smelting vessel are injected above and/or in a slag layer on the liquid feed material in the smelting vessel.3. The method according to claim 2 , wherein the zinc containing materials injected into the smelting vessel are injected at a first and/or a second level wherein the first level is between the smelt cyclone and the slag layer on the liquid metal in the smelting vessel and wherein the injection at the second level is carried out through a supply lance into the slag layer.4. The method according to claim 1 , wherein the particle size of the zinc containing materials injected into the smelt cyclone are in a range of at most 2.0 mm.5. The method according to claim 1 , wherein the particle size of the zinc containing materials injected into the smelt vessel at the first level have a particle size of at most 15 cm.6. The method according to claim 1 , wherein the particle size of the zinc containing materials injected at the second level into the slag layer have a particle size of at most 50 μm.7. The method according to claim 1 , wherein the off-gas is guided through an inclined off-gas duct part downstream of the smelting vessel and the smelt cyclone.8. The method according to claim 1 , wherein the off-gas is cooled/quenched in an upright off-gas duct part downstream of the inclined off-gas duct part.9. The method according to claim 8 , wherein the off-gas is cooled/quenched to a temperature of ≤1200° C.10. The method according to claim 1 , wherein the off-gas is passed through a ...

METHOD OF RECOVERY OF ZINC AND OTHER METALS FROM METALLURGICAL FINES

A method and recovering method of recovering zinc oxides and other metal oxides having an injection chamber where a mixture of natural gas and oxygen is formed and then ignited to form high temperature combustion gases of greater than 2000° C. with a high concentration of carbon monoxide. Then, the mixture is transported through a quiescent chamber to a feed chamber where the ignited high temperature combustion gases are mixed with finely divided material, including EAF dust. The mixture is transported to a reaction chamber, wherein zinc vapor and other metal vapors and molten slag particles are formed. The zinc vapor and other metal vapors are separated from the molten slag particles and transported to an insulated plenum. Zinc vapor and other metal vapors are mixed with air and become airborne zinc oxide and other metal oxides. The airborne zinc oxide and other metal oxides are collected. 1. A method of recovering zinc oxide and other metal oxides from metallurgical fines , comprising:a. forming in an injection chamber a mixture of natural gas and oxygen and then igniting the mixture to form high temperature combustion gases of greater than 2000° C. with a high concentration of carbon monoxide;b. transporting the ignited high temperature combustion gases through a quiescent chamber surrounded by a cooling jacket and located below the injection chamber;c. transporting the ignited high temperature combustion gases from the quiescent chamber to a feed chamber surrounded by a cooling jacket and located below the quiescent chamber;d. forming in the feed chamber a mixture of the ignited high temperature combustion gases with injected finely divided material including EAF dust;e. transporting the mixture of the ignited high temperature combustion gases with injected finely divided material including EAF dust to a reaction chamber surrounded by a cooling jacket, wherein carbon monoxide in the ignited high temperature combustion gases react with metal compounds in the ...

Method of extracting zinc oxide

FIELD: metallurgy. SUBSTANCE: invention relates to methods of separating zinc from a feedstock containing a mixture of metals and metal compounds. Method includes leaching a zinc-containing feedstock with a concentrated inorganic solution to form a suspension containing an insoluble substances and a mother solution with dissolved substances, separating insoluble substances from mother solution and precipitating zinc oxide from mother solution. Leaching is performed with a concentrated inorganic basic solution containing more than 25 wt% base containing a cation which does not form a complex with zinc, and zinc oxide is precipitated from mother solution by adding an anti-solvent to mother solution. After separation of insoluble substances from mother solution, it is cleaned to remove non-zinc substances dissolved in basic solution. EFFECT: lower solubility of zinc oxide in basic solution and possibility to regenerate both basic solution and anti-solvent for recycling in process of hydrometallurgical processing for saving costs. 32 cl, 2 tbl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 591 903 C2 (51) МПК C22B 19/00 (2006.01) C22B 3/12 (2006.01) C22B 19/34 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014108468/02, 19.10.2011 (24) Дата начала отсчета срока действия патента: 19.10.2011 (72) Автор(ы): ЛОРИН, Мишель (CA), ПАСПЕК, Стивен С. (US) (73) Патентообладатель(и): КЭНЭДАС КЕМИКЭЛ, ЭлЭлСи (US) Приоритет(ы): (30) Конвенционный приоритет: R U 09.09.2011 US 13/229,188 (43) Дата публикации заявки: 20.10.2015 Бюл. № 29 (45) Опубликовано: 20.07.2016 Бюл. № 20 2 5 9 1 9 0 3 (56) Список документов, цитированных в отчете о поиске: RU 2119542 C1, 27.09.1998. US 6517789 B1, 11.02.2003. US 5204084 A, 20.04.1993. RU 2075524 C1, 27.09.1999. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 09.04.2014 (86) Заявка PCT: 2 5 9 1 9 0 3 R U (87) Публикация заявки PCT: C 2 C 2 US 2011/056852 (19.10. ...

Method of producing zinc oxide

FIELD: chemistry. SUBSTANCE: method includes leaching of zinc-containing oxide material by 8-10% of aqueous ammonia at a temperature of 17-25°C, S:L = 1:9 - 1:10 for 20-60 minutes. Further ammonium is destilled from zinc-containing solution at a temperature of 85-95°C until a pH=8-9 to precipitate zinc hydroxide and return the ammonia to prepare an ammonia solution is obtained. Then the separation of zinc hydroxide precipitate is carried out, drying it and direction of the solution remaining after separation of the precipitate, to prepare an ammonia solution, which is recycled to the leach. Thus, as the zinc-containing material, an oxide precipitate is used; it was obtained by neutralizing the mine water solutions of copper-zinc mines lime milk, or a zinc containing dust copper smelting production. EFFECT: preparation of high purity zinc oxide. 3 cl, 3 dwg, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 618 596 C2 (51) МПК C22B 19/34 (2006.01) C22B 3/44 (2006.01) C02F 1/62 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015134309, 14.08.2015 (24) Дата начала отсчета срока действия патента: 14.08.2015 (72) Автор(ы): Халезов Борис Дмитриевич (RU), Крашенинин Алексей Геннадьевич (RU) 04.05.2017 Приоритет(ы): (22) Дата подачи заявки: 14.08.2015 (43) Дата публикации заявки: 16.02.2017 Бюл. № 5 Адрес для переписки: 620016, г. Екатеринбург, Амундсена, 101, ИМЕТ УрО РАН, нач. отдела патентной и изобретательской работы Л.А. Сандлер 2294316 С1, 27.02.2007. US 6132621 A, 17.10.2000. US 2003082084 A1, 01.05.2003. WO 9530626 A1, 16.11.1995. CA 2415732 A1, 24.01.2002. FR 2285465 A1, 16.04.1976. 2 6 1 8 5 9 6 R U (57) Формула изобретения 1. Способ получения оксида цинка из цинксодержащего оксидного материала, включающий выщелачивание цинксодержащего оксидного материала аммиачным раствором, осаждение цинксодержащего осадка из цинксодержащего раствора дистилляцией аммиака с возвращением аммиака ...

Zinc containing raw material processing installation

FIELD: waste recycling.SUBSTANCE: invention relates to the zinc-containing materials processing device, in particular, iron and zinc containing metallurgical furnaces pulverized waste, both in the metallic state and in the form of oxides. Plant, containing the metal casing, in which the evaporating and oxidizing cyclone chambers, slag outlet with the tap hole for the slag removal from the evaporation chamber and the charging device are located, in accordance with the invention, it is provided with the induction furnace located without a gap under the slag outlet tap, so as to be able to continuously maintain the emerging from the slag outlet material in the molten state, at that, the induction furnace height to its diameter ratio H/D=0.1–0.5, bore generatrix length to the diameter ratio l/d=0.1–0.5, and the induction furnace internal diameter to the tap diameter ratio d/D=0.1–0.5, tap hole, through which the liquid slags from the cyclone evaporating chamber removal is performed, is simultaneously the induction melting chamber charging port, which is connected to the cyclone evaporating chamber bottom part without a gap.EFFECT: enabling possibility to separate the waste with the pig iron and commercial zinc oxide produce, the slag removal system smooth operation and its maintenance facilitation.1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 667 949 C2 (51) МПК C22B 19/34 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C22B 19/34 (2006.01) (21)(22) Заявка: 2017109939, 24.03.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 24.03.2017 (43) Дата публикации заявки: 24.09.2018 Бюл. № 27 (45) Опубликовано: 25.09.2018 Бюл. № 27 2 6 6 7 9 4 9 R U 2594934 C2, 20.07.2016. RU 2542245 C2, 20.02.2015. RU 2087569 C1, 20.08.1997. WO 02092513 A1, 21.11.2002. (54) УСТАНОВКА ДЛЯ ПЕРЕРАБОТКИ ЦИНКСОДЕРЖАЩЕГО СЫРЬЯ (57) Реферат: Изобретение относится к установке ...

METHOD FOR EXTRACING ZINC OXIDE

1. Способ отделения оксида цинка от сырьевого материала, содержащего смесь металлов и соединений металлов, включающий следующие стадии:a. выщелачивание и окисление в случае присутствия цинка в виде металла, цинксодержащего сырьевого материала концентрированным неорганическим основным раствором, содержащим больше чем 25 мас.% основания, для образования суспензии, при этом основание содержит катион, который не образует комплекс с цинком;b. необязательно, разбавление суспензии водой в количестве, достаточном для уменьшения вязкости суспензии, облегчая таким образом отделение маточного раствора, содержащего растворенный цинк, от нерастворимых веществ;c. отделение нерастворимых веществ от маточного раствора иd. осаждение оксида цинка из маточного раствора путем добавления антирастворителя в маточный раствор.2. Способ по п.1, дополнительно включающийe. извлечение осажденного оксида цинка из отработанного маточного раствора.3. Способ по п.2, дополнительно включающийf. регенерацию указанного основного раствора и указанного антирастворителя для повторного использования.4. Способ по п.3, дополнительно включающийg. повторение стадий с a по f.5. Способ по п.1, в котором указанная стадия выщелачивания проводится при температурах выше температуры окружающей среды и ниже или равной температуре кипения суспензии.6. Способ по п.1, в котором указанная стадия выщелачивания проводится при температурах выше чем обычная температура кипения суспензии и при давлениях больше чем 1 атмосфера.7. Способ по п.1, в котором указанный основный раствор содержит гидроксид натрия.8. Способ по п.7, в котором раствор гидроксида натрия содержит больш�

method for purifying zinc oxide

本申请公开了从含有金属和金属化合物的混合物的原料中分离锌的方法。所述方法包括用浓缩的碱性溶液浸取含有锌的原料，可选地用足以减少浆料粘度的量的水稀释浆料由此有助于从不可溶的材料中分离含有溶解的锌的母液，从所述母液分离不可溶的材料并且通过向所述母液加入反溶剂而从所述母液沉淀氧化锌。所描述的方法还提供所述碱性溶液和反溶剂的循环使用。

Process for manufacturing sulfate of zine fertilizer from dust in electric furnace

본 발명은 전기로다스트로 황산아연을 제조하는 방법에 관한 것으로 보다 구체적인 것은, 아연성분이 적어도 25%이상으로 존재하는 전기로다스트를 황산수용에 투입하여 7-8시간 반응시켜 용액 내에 황산염을 형성시키는 제1공정과, 황산염이 형성된 전기로다스트용액에 과망산가리 1.5-2.0%를 투입하여 철성분을 제거시켜 침전가능한 응고물로 형성시켜 용액에서 분리하는 제2공정과, 철성분이 분리된 용액속에 아연말 0.5-1.0%를 투입하여 납과 같은 중금속을 황산아연으로 치환시켜 침전가능한 결정물로 형성시켜 용액에서 분리하는 제3공정과, 철성분과 중금속이 제거된 용액을 PH4으로 조정하여 냉각시키거나 건조시키는 가공방법을 통해 황산아연을 얻는 제4공정을 순차적으로 이행하여 전기로다스트에서 황산아연을 제조하므로서 전기로다스트의 산업적 이용가치를 향상시키고 얻어지는 황산아연의 품질을 향상시키며 최종폐기물은 시멘트 제조의 첨가물로 이용할수 있는 것이다.

The method of producing zinc oxide

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2015 134 309 A (51) МПК C22B 19/34 (2006.01) C22B 3/44 (2006.01) C02F 1/62 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2015134309, 14.08.2015 Приоритет(ы): (22) Дата подачи заявки: 14.08.2015 (43) Дата публикации заявки: 16.02.2017 Бюл. № 05 (72) Автор(ы): Халезов Борис Дмитриевич (RU), Крашенинин Алексей Геннадьевич (RU) A 2 0 1 5 1 3 4 3 0 9 R U Стр.: 1 A (57) Формула изобретения 1. Способ получения оксида цинка, включающий выщелачивание цинксодержащего оксидного материала аммиачным раствором, осаждение цинка из раствора дистилляцией аммиака с возвращением аммиака на приготовление аммиачного раствора, отделение цинксодержащего осадка и его сушку, отличающийся тем, что выщелачивание цинксодержащего оксидного материала ведут 8-10%-ным водным раствором аммиака при температуре 17-25°C, Т:Ж=1:9-1:10, дистилляцию аммиака осуществляют из цинксодержащего раствора до получения рН 8-9 с выпадением в осадок гидроксида цинка, и раствор, оставшийся после отделения осадка гидроксида цинка, направляют на приготовление аммиачного раствора. 2. Способ по п. 1, отличающийся тем, что выщелачивание цинксодержащего оксидного материала ведут в течение 20-60 мин. 3. Способ по п. 1, отличающийся тем, что в качестве цинксодержащего оксидного материала используют осадок, полученный нейтрализацией растворов шахтного водоотлива медно-цинковых рудников известковым молоком, или цинксодержащие пыли медеплавильного производства. 2 0 1 5 1 3 4 3 0 9 (54) Способ получения оксида цинка R U Адрес для переписки: 620016, г. Екатеринбург, Амундсена, 101, ИМЕТ УрО РАН, нач. отдела патентной и изобретательской работы Л.А. Сандлер (71) Заявитель(и): Федеральное государственное бюджетное учреждение науки Институт металлургии Уральского отделения Российской академии наук (ИМЕТ УрО РАН) (RU)

PLANT FOR PROCESSING ZINC-CONTAINING RAW MATERIALS

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2017 109 939 A (51) МПК C22B 19/34 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2017109939, 24.03.2017 (71) Заявитель(и): Эстрин Игорь Арнольдович (RU), Плаксин Алексей Владимирович (RU), Плаксин Петр Алексеевич (RU) Приоритет(ы): (22) Дата подачи заявки: 24.03.2017 (43) Дата публикации заявки: 24.09.2018 Бюл. № Адрес для переписки: 344038, г. Ростов-на-Дону, пл. Ростовского Стрелкового Полка Народного Ополчения, РГУПС, НИЧ (72) Автор(ы): Эстрин Игорь Арнольдович (RU), Плаксин Алексей Владимирович (RU), Плаксин Петр Алексеевич (RU) A R U A 2 0 1 7 1 0 9 9 3 9 (57) Формула изобретения Установка для переработки цинксодержащего сырья, содержащая загрузочное устройство, испарительную и окислительную циклонные камеры, камеру расположенную под отверстием шлакоотвода, отличающаяся тем, что под отверстием шлакоотвода установлена без зазора индукционная печь, в которой материал, выходящий из летки, постоянно поддерживается в расплавленном состоянии, при этом отношение высоты индукционной печи к ее диаметру H/D=0.1-0.5, отношение длины образующей летки к диаметру l/d=0,1-0,5, а отношение внутреннего диаметра индукционной печи к диаметру летки d/D=0,1-0,5. 2 0 1 7 1 0 9 9 3 9 (54) УСТАНОВКА ДЛЯ ПЕРЕРАБОТКИ ЦИНКСОДЕРЖАЩЕГО СЫРЬЯ R U 27 Стр.: 1

Process for purifying zinc oxide

从含有金属和金属化合物的混合物的原料中分离锌的方法。所述方法包括用浓缩的碱性溶液浸取含有锌的原料，可选地用足以减少浆料粘度的量的水稀释浆料由此有助于从不可溶的材料中分离含有溶解的锌的母液，从所述母液分离不可溶的材料并且通过向所述母液加入反溶剂而从所述母液沉淀氧化锌。所描述的方法还提供所述碱性溶液和反溶剂的循环使用。

Method and device for the production of zinc blank

Patent FR2373612B1

Process for the separation of metals from their ores

Blast furnaces for smelting zinc

Method and device for the production of zinc blank

Zinc recovery from steelworks dust - where hot blast furnace gas reduces zinc oxide to zinc vapour which is re:oxidised and collected

Zinc is extracted from iron and steel works waste, by treating the waste with a reducing agent (b) contg. CO and/or H2 and their oxidised cpds. at a temp. where the redn. of ZnO is selective, forming Zn vapour removed by gas (b), which reoxidises the Zn to ZnO. The waste is pref. granulated and dried, then preheated to above 700 degrees C by an oxidising gas (a), followed by reaction with agent (b), which is pref. blast furnace gas, forming Zn vapour. The residue is then cooled. The granulate is pref. dried by combustion of the carbon in the scrap, extra carbon being added if required. Gas (b) is pref. preheated by heat exchange with gas (b) contg. Zn vapour. The air used for cooling the residue is pref. used in preheating the waste. The large amt. of valuable Zn in the dust from blast furnaces and steel making plant is recovered with max. thermal efficiency.

Process for the transformation of zinc residues into zinc blank

Process for the production of zinc oxide

Process of recovering zinc oxide

Production of zinc oxid.

Improvements in and relating to the treatment of zinc sulphate

282,706. Soc. GÚnÚrale MÚtallurgique de Hoboken. Dec. 30, 1926. [Convention date]. Zinc oxide.-A sintered form of zinc oxide which may contain iron or copper oxide and is suitable for reduction in a zinc oven is formed bv roasting in a sintering-apparatus worked with blown or drawn blast a mixture of zinc sulphate and a sulphide such as zinc blende, iron pyrites or iron and copper pyrites. Carbonaceous material, roasted blende, sintered material or slag from iron or copper blast furnaces may be added to the mixture before roasting.

A method of preparing high-grade secondary zinc oxide

本发明公开了一种制备高品位次氧化锌的方法，包括以下步骤：(1)含锌废渣用稀硫酸浸出，并过滤；(2)向滤液中通入臭氧，过滤；(3)向滤液中加入饱和氢氧化钠溶液，生成氢氧化锌浆料；(4)将浆料水洗2‑3次并过滤；(5)将滤渣经煅烧得到高品位次氧化锌。本发明提供的制备高品位次氧化锌的方法，能有效去除次氧化锌中的杂质，且运行成本低。

Zinc oxide manufacturing process

Installation for obtaining zinc from fumes rich in zinc vapor

Ore separator

Improvements in or relating to the production of metal oxides and other compounds ofmetals

In the production of volatilizable metal oxides and compounds such as zinc oxide and basic lead sulphate by blowing air through a mixture of fuel and ore on a bed of ignited fuel, the ignition fuel or the ore or the reducing coal is used in the form of briquettes, for instance of double pyramidal form on a common square base of 1 3/4 inch side, the distance between the apexes being 1 1/2 inches; or the ore and reducing-fuel may be briquetted together, and some ore may be briquetted with the ignition fuel. The binding-agent may be sulphite cellulose liquor, and a pressure of 2000 lb. per square inch may be used in the briquetting. The briquettes are dried and baked by stacking on trays in a tunnel drier at 200 DEG C. The pressure of the blast is less than in the known process, and it may sometimes be dispensed with, the fan which draws the fume through the bag room being sufficient to draw enough air through the charge.

processes for separating zinc oxide from mixed metal and metal compound containing raw material and for separating zinc from zinc containing raw material

Improvement in the processes for obtaining zinc blank and in the ovens used in its manufacture

Zinc oxide and manufacture thereof

Process for the transformation of zinc residues into zinc blank

Process for obtaining zinc oxide from metallic zinc, metals or alloys containing zinc

Improved Manufacture of Zinc Oxide.

23,826. Asef, W. Dec. 9. Alkali hydrates.-In a process for obtaining pure zinc oxide by precipitating a solution of alkali zincate by adding a salt solution, the salt employed may be sodium carbonate. After the separation of the zinc oxide, the filtrate is treated with lime to convert the carbonate into hydrate.

Improvements in blast furnaces

Improvements in and relating to the manufacture of zinc white

<PICT:0344087/III/1> In the manufacture of zinc oxide from pure or impure metallic zinc in a rotary furnace 1, the vapour passing into the chamber 31 is treated during its passage through the shaft 24 to the collector 26 with carbon dioxide, supplied through a pipe 22, to complete oxidation and decolourization. In a modified construction, for use particularly when the zinc contains impurities such as iron or lead, the material is first melted in an auxiliary tilting furnace from which comparatively pure molten zinc is delivered to the rotary furnace 1.

Shaft furnace smelting of oxidic ores, concentrates or calcines

Method and apparatus for direct shaft furnace smelting of oxidic ores, concentrates or calcines, the method comprising causing a pelletized or briquetted mixture of the ore or concentrate or calcines and coal to gravitate slowly downwards first through one or more carbonizing columns having holes or slots in the walls thereof and then through a main furnace shaft therebeneath, introducing oxygen-containing gas into a combustion chamber surrounding or partly surrounding the carbonizing column or columns to effect substantial combustion of tars and combustible gases emerging through the holes or slots from the descending material in the carbonizing column or columns, withdrawing the products of combustion from the combustion chamber, and withdrawing the metal or alloy produced from the main furnace shaft; and apparatus adapted therefor.

Process of making zinc oxide

Method for the recovery of zinc

The invention relates to a method for the recovery of zinc from zinc containing materials using a smelting apparatus for smelting a metalliferous feed material, wherein the smelting apparatus comprises a smelting vessel, a smelt cyclone mounted on the smelting vessel and in connection with the inside of the smelting vessel and an off-gas duct connected to the smelt cyclone, and wherein the method comprises the steps of: - injecting the feed material with a carrier gas into the smelt cyclone, - injecting an oxygen containing gas into the smelt cyclone, - injecting coal with a carrier gas into the smelting vessel, - injecting an oxygen containing gas into the smelting vessel, - optionally injecting fluxes with a carrier gas into the smelting vessel, wherein the zinc containing materials are injected into the smelt cyclone and/or into the smelting vessel.

Process for purifying zinc oxide

A process for separating zinc from a feedstock containing a mixture of metals and metal compounds. The process includes leaching a zinc -containing feedstock with a concentrated basic solution, optionally diluting the slurry with an amount of water sufficient to reduce the viscosity of the slurry thereby facilitating separation of a pregnant liquor containing dissolved zinc from insoluble materials, separating the insoluble materials from the pregnant liquor, and precipitating zinc oxide from the pregnant liquor by adding an anti-solvent to the pregnant liquor. The described process also provides for recycling of the basic solution and the anti-solvent.

Improvements in or relating to smelting oj zink inside of blast furnaces

Smelting process

Process for purifying zinc oxide

从含有金属和金属化合物的混合物的原料中分离锌的方法。所述方法包括用浓缩的碱性溶液浸取含有锌的原料，可选地用足以减少浆料粘度的量的水稀释浆料由此有助于从不可溶的材料中分离含有溶解的锌的母液，从所述母液分离不可溶的材料并且通过向所述母液加入反溶剂而从所述母液沉淀氧化锌。所描述的方法还提供所述碱性溶液和反溶剂的循环使用。

Extraction of zinc

A method to conduct a high cinc/lead oven. (Machine-translation by Google Translate, not legally binding)

In a method of operating a zinc-lead blast furnace into which are charged carbonaceous fuel and a sinter containing zinc oxide and lead oxide, pre-heated oxygen-containing gas being blown in through tuyeres near the bottom of the furnace, while below these tuyeres molten lead and slag are run off, the zinc oxide in the charge being reduced to zinc vapour which is taken off and condensed, the ratio of zinc to carbon in the charge and the pre-heat temperature of the blast are adjusted in accordance with the continually monitored values of (1) the said zinc/carbon ratio (2) the said pre-heat temperature (3) the ratio of slag-forming materials to carbon in the charge (4) the composition of the product gases from the furnace (5) the zinc content of the slag (6) the temperature of the molten slag leaving the furnace, so as to maximize the zinc elimination according to the relationship: - in which R z = zinc elimination V = a constant S z = weight of slag-forming material in charge/ weight of zinc in charge F = 1/D = 1/zinc-carbon ratio in charge K1 = a constant p+1 = moles of carbon burnt per atom of oxygen in the blast T p = pre-heat temperature of blast b 0 to b 5 # = polynomial co-efficients a 0 to a 5 #

Improvements in or relating to the treatment of sulphide ores or sulphidic metallurgical products

297,597. Krupp Grusonwerk Akt.- Ges., r. Nov. 24, 1927. Addition to 234,826. Roasting.-Sulphide ores or sulphidic metallurgical products are first roasted in an oxidizing atmosphere, e.g. in a rotary tubular furnace, to remove a portion of the sulphur in the material, in the form of sulphur dioxide, and thus effect a saving in the quantity of binding material for the sulphur necessary in the process described in the parent Specification. The material is then immediately volatilized with the addition of reducing agents as well as of agents such as alkaline earths to bind the remainder of the sulphur in the residue, the waste gases from the preliminary roasting furnace being combined with the gases of the volatilization furnace, or, alternatively, the gases of the volatilization furnace are conveyed through the roasting furnace, if desired with the addition of air to assist oxidation, to form metal sulphates. This product is suitable for subsequent lixiviation. The process is especially suitable for the manufacture of electrolytic zinc, any lead sulphate associated with the zinc sulphate remaining behind as an insoluble residue during lixiviation.

Process for the extraction of zinc

Method for preparing zinc hypoxide by oxygen pressure leaching of zinc smelting solid waste slag

本发明公开了一种氧压浸出锌冶炼固废渣制备次氧化锌的方法，将氧压浸出锌冶炼固废渣干燥至含水15％以下，再将固废渣利用造粒机造粒。然后与石灰石、石英石及还原煤混合后送往富氧侧吹炉。将物料融化，熔炼时向炉内鼓入富氧空气，完成造硫、造渣等化学反应。渣中的硫生成SO 2 ，通过烟气管道进入制酸系统生产工业硫酸；熔融的炉渣采用烟化炉吹炼，烟尘产出次氧化锌产品，烟化炉渣无害化处理。本发明解决了锌氧压浸出过程中产出的冶炼固废堆存、运输困难、浸出渣中有价金属无法回收等问题，实现了锌氧压浸出冶炼固废无害化处理。具有可回收铅、锌、铟、锗、银等有价金属、能制备工业级次氧化锌产品、工艺流程简单且有价金属回收率高、能耗低等优点。

Patent JPS5844138B2

Method for recovering zinc from substances containing a zinc conpound

내용 없음. No content.

Process and devices for the production of zinc blank

Process of smelting oxidized zinc ores

Process for separating metals, or metalliferous substances, non-volatile from metals, or metalliferous substances, volatile

Improvements in or relating to the condensation of zine in metallic vapours from gases containing the same

759,709. Condensing zinc. NATIONAL SMELTING CO., Ltd. Sept. 27, 1954 [Oct. 6, 1953], No. 27434/53. Class 82(1). Gases containing zinc vapour, produced for example in blast furnaces or electrothermic furnaces, are freed from dust and/or fume by passing through a separator in which the gases are deflected downwardly and laterally to deposit the dust and/or fume before passing to a shock chilling condenser to condense the zinc as liquid metal. A small amount of oxygen may be introduced into the gases to reheat them before they pass to the condenser. Fig. 3 shows a section of a blast furnace 1 from which gases are removed by offtake 2. The gases are deflected laterally on passing through chamber 3 and downwardly under a partition 6 and continue through duct 5 to condenser inlet 8. The dust is deposited in chamber 3 and collects in a dust hopper at the base of the chamber. In a further embodiment, Figs. 4-6 (not shown) the gases pass through a cyclone before entering the zinc condenser. Specifications 572,961, 682,179 and 759,710 are referred to.

Smelting process

Method of making zinc-white.

Process for reducing material containing zinc in shaft furnaces

Operation of zinc-smelting blast furnaces

Further development in the manufacture of zinc oxide

CINKO SIGNATURE SPECIFIC HIGH OVEN OR RELATED REPRODUCTION

Method for recovering zinc oxide from low-grade lead-zinc oxide ore

本发明公开了一种从低品位氧化铅锌矿中回收氧化锌的方法，其包括步骤：对原始低品位氧化铅锌矿石进行破碎处理，得到氧化铅锌细矿石；向所述氧化铅锌细矿石中加入粉煤和石灰，混合均匀后得到混合料；对所述混合料进行压团处理，得到混合团块；对所述混合团块进行热还原处理，回收得到氧化锌。本发明提供的方法可提升氧化锌的回收效率，且有效降低了氧化锌的回收成本。

Process for the separation of zinc oxide comprising leaching of the material with a concentrated base solution, separation of insoluble materials, and precipitation of zinc oxide from the enriched liquid by the addition of an antisolvent to the enriched liquid

Furnace for the preparation of zinc oxide from ores

Apparatus for producing zinc oxide

Method and device for zinc extraction

Process of smelting and refining volatile metals.

Patent JPS5027002B1

Procedure and Device for the Production of Zinc White.

Process of making zinc oxide

<PICT:0435005/III/1> Zinc oxide of a acicular form is obtained by vaporizing zinc in a reducing atmosphere at approximately 1200 DEG C., and passing the zinc vapours into an oxidizing zone wherein the air supply is regulated to promote the growth of the oxide particles, as by slowly mixing the vapours with air to burn them with a lazy flame whilst maintaining a temperature of substantially 1100 DEG C. Zinc ore may be reduced and zinc be volatilized in a reducing atmosphere in a furnace 1, the mixed zinc vapour and reducing gas be passed to a chamber 6 maintained at a constant temperature in which they are momentarily arrested, and combustion be effected in a chamber 10 by means of air admitted through ports 15, 16. The zinc oxide particles at approximately 1100 DEG C. are withdrawn through a trail 11 to a bag room 13 by a fan 12. Air may be admitted through ports 17 into chamber 6 in sufficient quantity to oxidize impurities without oxidizing the zinc vapours to any appreciable extent. Specification 379,855 is referred to.

Operation of a blast furnace

Process for extracting zinc and other volatile metals from ores and metallurgical products

A kind of zinc oxide ore alkaline leaching agent and its leaching method

本发明公开了一种氧化锌矿碱性浸出剂及浸出方法，属于矿物冶金技术领域。本发明所述组合药剂中各原料及其质量百分比为：氢氧化钠10~80wt%、碳酸铵10~80wt%、硫酸铵10~80wt%。具体方法为：先将氧化锌矿一段磨矿（粗磨），加入石灰使磨矿pH=9~11，以硫酸铵作为浸出剂在超声波辐射环境下进行一段浸出，在进行固液分离，浸出渣细磨后进行二段磨矿（细磨），二段磨矿加入石灰使矿浆pH=9~11，并加入组合浸出剂进行二段浸出，浸出渣渣直接抛尾，浸出液返回一段浸出，一段浸出液进行加入石灰使溶液pH=10~11，再加入硫酸铵，充分作用后进行固液分离，浸出渣抛尾，浸出液作为最终的锌贵液。本发明所述的浸出剂无毒、高效、绿色环保；另外，该浸出方法简单，而且能提高氧化锌矿的浸出率，明显缩短浸出时间，不需要高温、加压设备，在常温条件下就可以获得较好的浸出指标，并且操作简单，生产成本低。

Process for remelting and refining zinc residues

Improvements relating to the smelting of lead ores

Método para a recuperação de zinco

a presente invenção refere-se a um método para a recuperação de zinco de materiais contendo zinco, usando uma aparelho de fundição para fundir um material de alimentação metalífero, em que o aparelho compreende um vaso de fundição, um ciclone de fundir montado sobre o vaso de fundição, e em conexão com o lado de dentro do vaso de fundição, e um duto do gás de fundição conectado ao ciclone de fundir, e em que o método compreende as etapas de: - injetar o material de alimentação com um gás condutor no ciclone de fundir, - injetar um oxigênio contendo gás no ciclone de fundir, - injetar carvão com um gás condutor no vaso de fundição, - injetar um oxigênio contendo gás no vaso de fundição, - opcionalmente injetar fluxos com um gás condutor no vaso de fundição, em que os materiais contendo zinco são injetados no ciclone de fundir e/ou no vaso de fundição.

Perfezionamenti relativi alla fusione dello zinco in altoforno.

一种侧吹化料-烟化吹炼联合处理含锌物料的方法

本发明公开了一种侧吹化料‑烟化吹炼联合处理含锌物料的方法，将铅锌共生矿和锌浸出渣等含锌物料按照任意比例组成混合物料，加入侧吹炉进行化料，侧吹炉烟气经过处理得到含F、Cl、As高的氧化锌烟尘和烟气，烟气经脱硫后达标排放；炉渣直接放入烟化炉进行吹炼，得到的炉渣经过水淬处理即可出售，烟化炉烟气经过处理得到含F、Cl、As低的氧化锌烟尘和烟气，烟气直接达标排放。本发明实现对含锌物料连续氧化，床能力高、烟气低浓度SO 2 稳定，同时将含F、Cl、As高的氧化锌烟尘和含F、Cl、As低的氧化锌烟尘分开的，有利于下一步氧化锌分开处理，能够降低成本。

Verfahren zur Aufarbeitung von ausgebrannten Zinkretorten und -muffeln o. dgl. aus Siliziumkarbid

Procédé de fabrication du blanc de zinc et d'autres dérivés

一种熔融坩埚的稳定型投料组件

一种熔融坩埚的稳定型投料组件。涉及氧化锌生产制造领域。提出了一种结构精巧、操作简单、机构动作稳定且劳动强度低、上料稳定的熔融坩埚的稳定型投料组件。所述投料组件包括基板、前夹板、后夹板、前顶杆、后顶杆、前压簧、后压簧和一对挡块，所述基板固定连接在熔融坩埚的上方，所述基板上开设有长条形滑孔，所述前夹板、后夹板均呈T字形，且二者的中部均滑动连接在长条形滑孔中，所述前压簧套接在前顶杆上，所述后压簧套接在后顶杆上。所述驱动板的一侧端面上还固定连接有拉环。本发明从整体上具有操作简单、机构动作稳定以及劳动强度低、上料稳定等优点。

Process of smelting ores

一种降低锌浸出渣挥发窑产出的氧化锌粉含铁和不溶硫的方法

本发明涉及锌冶炼技术领域，尤其涉及一种降低锌浸出渣挥发窑产出的氧化锌粉含铁和不溶硫的方法，包括步骤：将锌浸出渣和焦丁进行混合，并控制含水量，得到混合料；将所述混合料与余锅粉进行混合造粒，得到混匀料；将所述混匀料输送至挥发窑内，并控制所述挥发窑的窑尾负压，开启氧气和窑头鼓风，产出余锅粉和氧化锌粉。本发明提供的方法无需增加新工艺流程或设备设施，仅通过加强工艺控制，无需进一步除杂，从根本上降低锌浸出渣挥发窑产出的氧化锌粉的含铁和不溶硫，降低了企业生产成本，从源头端为后续湿法工序的正常生产提供了保障。

Zinc blast furnaces

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