СПОСОБ ДЕСУЛЬФИРОВАНИЯ АКТИВНОЙ МАССЫ И РЕШЕТОК СВИНЦОВЫХ АККУМУЛЯТОРОВ

Изобретения относятся к десульфированию активной массы и решеток свинцовых аккумуляторов. Способ включает десульфирование в две стадии. На первой стадии сульфат свинца из активной массы приводят в контакт с Na2CO3 в растворе, получая дисперсию, содержащую карбонизированную активную массу на основе основных карбонатов свинца. На второй стадии эту дисперсию приводят во взаимодействие с СО2 с образованием дисперсии, содержащей десульфированную активную массу на основе РbСО3. Между этими двумя стадиями проводят гранулометрическое разделение с последующим десульфированием крупной фракции. Техническим результатом является эффективное удаление серы совместно с почти полным удалением натрия при десульфировании. 2 н. и 26 з.п. ф-лы, 3 ил.

СПОСОБ ИЗВЛЕЧЕНИЯ ОКСИДА ЦИНКА (ВАРИАНТЫ)

FIELD: recovery of zinc oxide from industrial waste materials containing various components including zinc, lead, iron and cadmium. SUBSTANCE: waste material is treated with ammonium chloride solution at elevated temperature, insoluble components are separated from solution, solution is treated with metallic zinc to force undesirable metal ions from solution, the solution is then cooled to deposit zinc compounds therefrom, deposited zinc compounds are washed to remove undesirable compounds such as zinc diaminodichloride and remaining zinc compound (which is essentially zinc hydroxide) is dried to obtain essentially pure zinc oxide. EFFECT: more efficient recovery method. 23 cl, 6 dwg, 4 tbl сучегьс ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2 119 542 ' 13) Сл С 22 В 19/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 94036766/02, 10.11.1992 (30) Приоритет: 15.01.1992 1$ 820987 (46) Дата публикации: 27.09.1998 (56) Ссылки: Ц5, патент, 3849121, кл. С 22 В ЗО, 1974. (71) Заявитель: Металз Ресайклинг Текнолоджиз Корп. (ЦЗ) (72) Изобретатель: Аллан С.Майерсон (Ц$) (73) Патентообладатель: Металз Ресайклинг Текнолоджиз Корп. (ЦЗ) (54) СПОСОБ ИЗВЛЕЧЕНИЯ ОКСИДА ЦИНКА (ВАРИАНТЫ) (57) Реферат: Способ может быть использован для извлечения оксида цинка из промышленных отработанных материалов, содержащих различные компоненты, включающие цинк, свинец, железо и кадмий. Отработанный материал обрабатывают раствором хлорида аммония при повышенных температурах, отделяют нерастворившиеся компоненты из раствора, раствор обрабатывают металлическим цинком для вытеснения нежелательных металлических ионов из раствора, затем раствор охлаждают для осаждения из него соединений цинка, осажденные соединения цинка промывают для удаления таких нежелательных соединений, как диаминодихлорид цинка и оставшееся соединение цинка, которое по существу является гидроксидом цинка, высушивают, в результате получают, по существу, чистый оксид цинка. ...

Metal recovery

There is disclosed a process for recovering metals of high commercial value from a sludge (1) containing lead, antimony, silver, arsenic, bismuth and copper, by a wet method, by treating (2) the sludge (1) with aqueous hydrochloric acid (3) accompanied by air injection (4). The treated sludge is separated (5) into a silver-enriched fraction (6) and a silver-depleted solution (7). The fraction (6) is treated (8) with aqueous hydrochloric acid (9) and the treated fraction is separated (11) into an argentiferous residue (12) from which silver is recovered and a solution (13) enriched in hydrochloric acid and lead chloride. The solution (7) is cooled (21) and filtered (22) to obtain a residue (23) enriched in lead chloride from which lead may be recovered and a solution (24) containing chlorides of antimony, bismuth, silver, arsenic, copper and lead from which these elements may be recovered. ...

Process for the recycling of electrical batteries, assembled printed circuit boards and electronic components.

DESULPHURISATION PROCEDURE OF PASTE AND LATTICE OF LEAD-ACID BATTERIES

PROCEDURE FOR THE PRODUCTION FROM LEAD AND SILVER WITH RUSTED ZINKERZEN OR CONCENTRATES THE OUTGOING PRODUCTION OF ELECTROLYTES FOR THE ZINC ELECTROLYSIS RESULTING ARREARS, OUT OF WHICH ZINC LARGE IS DISTANT

PROCEDURE FOR SEPARATING FROM HEAVY METALS AND HALOGENS OF WASTE MATERIALS OR ARREARS

RECOVERING METAL VALUES FROM LEAD STORAGE BATTERIES

PROCESS FOR THE RECYCLING OF ELECTRICAL BATTERIES, ASSEMBLED PRINTED CIRCUIT BOARDS AND ELECTRONIC COMPONENTS

Method for the enhanced recovery of zinc oxide

METHOD OF CONCENTRATING SILVER FROM ANODE SLIME

A method of concentrating silver from anode slime which comprises reacting-an intermediate product obtained by treatment of the slime, the intermediate product containing lead in sulfate form and silver in chloride form, with an aqueous solution of an alkali hydroxide or carbonate. The obtained reaction product is then subjected to solid-liquid separation, and the resulting residue is reacted with a nitric acid solution so that the lead therein may be separated into a filtrate, while the silver will remain in the residue.

HYDROMETALLURGICAL METHOD FOR RECOVERING METAL MATERIALS FROM SPENT LEAD-ACID STORAGE BATTERIES

PROCESS FOR THE DESULPHURIZATION OF MATERIALS AND/OR RESIDUES CONTAINING LEAD SULPHATE EMPLOYING AN AMINO COMPOUND

The present invention claims a process for the desulphurization of materials and/or residues containing lead sulphate, carried out in one or more stages. The main characteristic of this process is that the only desulphurising agent is an amino compound selected among urea, guanidine, guanine, arginine or another similar amino compound.

INTEGRATED RECOVERY OF METALS FROM COMPLEX SUBSTRATES

Described is a method of recovering a metal from a substrate having a metal sulphide, metal oxide, or combination thereof, by contacting the substrate with an aqueous oxidant to oxidize the metal sulphide to elemental sulphur and oxidized metal or convert the complex metal oxide to a metal salt, contacting the oxidized metal or simple metal oxide with ammonium hydroxide to form soluble a ammine complex of the metal to obtain a leachate and residual solids; separating the leachate from the residual solids; and recovering the metal.

PROCESS OF REGENERATING AND RECOVERING LEAD FROM LEAD SULPHATE-CONTAINING WASTES

RECOVERING LEAD FROM A MIXED OXIDIZED MATERIAL

In an example of a method for recovering lead from a mixed oxidized lead material, methane sulfonic acid is selected as a leaching acid for the mixed oxidized lead material. The mixed oxidized lead material is exposed to a solution including the methane sulfonic acid, which leaches lead from any of a lead oxide or a lead carbonate in the mixed oxidized lead material, and generates a liquid leachate including a lead- methane sulfonate salt. The liquid leachate is purified, and lead is recovered from the purified liquid leachate using electrolysis.

REMOVAL OF LEAD FROM SOLID MATERIALS

A leaching composition that substantially removes lead from solid materials and a method of using said composition. Preferably, the concentration of lead in the solid materials following processing is low enough that the solid materials can be reused and/or disposed of at minimal cost to the processor. Preferably, the solid materials comprise glass, such as cathode ray tube glass.

IMPROVED METHOD FOR THE RECOVERY OF LEAD FROM EXHAUSTED LEAD ACID STORAGE BATTERIES

An improved method for the recovery of lead from exhausted lead-acid storage batteries, comprising removal from the storage battery of the sulphuric acid solution, the coating element, the separators between the electrodes and the metal part i.e. grids, connectors and poles and milling of the remaining electrode paste of the storage battery to obtain an extremely fine powder (pastel), characterised by the following operations: a) treatment of the resulting powder with an aqueous saline solution, with a pH of between 0 and 8, capable of solubilising Pb (II) sulphate and oxide, leaving Pb (IV) oxide unsolubilised; b) reduction to metal lead of the bivalent lead ion, present in the soluble fraction, using metal iron, preferably in slight excess with respect to the stoichiometric proportions; c) reduction of the tetravalent lead oxide; and d) recovery of the salts used in the process step a) by elimination of the iron sulphate that has formed. Figure 1 is a block diagram showing an embodiment ...

IMPROVED METHOD FOR THE RECOVERY OF LEAD FROM EXHAUSTED LEAD ACID STORAGE BATTERIES

An improved method for the recovery of lead from exhausted lead-acid storage batteries, comprising removal from the storage battery of the sulphuric acid solution, the coating element, the separators between the electrodes and the metal part i.e. grids, connectors and poles and milling of the remaining electrode paste of the storage battery to obtain an extremely fine powder (pastel), characterised by the following operations: a) treatment of the resulting powder with an aqueous saline solution, with a pH of between 0 and 8, capable of solubilising Pb (II) sulphate and oxide, leaving Pb (IV) oxide unsolubilised; b) reduction to metal lead of the bivalent lead ion, present in the soluble fraction, using metal iron, preferably in slight excess with respect to the stoichiometric proportions; c) reduction of the tetravalent lead oxide; and d) recovery of the salts used in the process step a) by elimination of the iron sulphate that has formed. Figure 1 is a block diagram showing an embodiment ...

PROCESS AND APPARATUS FOR PRODUCTION OF USEFUL IRON PRODUCT FROM INDUSTRIAL WASTE STREAMS

A method and apparatus for producing a more concentrated iron product from an industrial waste materials stream (10) comprising iron and non-iron constituents such as EAF dust generally including the steps of compacting (60 A) the waste materials stream, roasting (14 B) the waste materials stream separating (600) the iron compounds contained in the waste materials stream by magnetic separation or flotation, and providing the iron compounds back to the EAF is described.

HYDRAULICMETALLURGICAL PROCEDURE FOR THE RECOVERY OF METALLIFEROUS MATERIALS FROM EXHAUSTED SOUR LEAD-ACID BATTERIES.

PROCESS FOR REDUCING THE AMOUNTS OF ZINC (ZN) AND LEAD (PB) IN MATERIALS CONTAINING IRON (FE)

СПОСОБ РЕГЕНЕРАЦИИ СОДЕРЖАНИЯ СВИНЦА ИЗ НЕОЧИЩЕННОГО ИСХОДНОГО МАТЕРИАЛА В ВИДЕ ЭЛЕКТРОДНОЙ ПАСТЫ ИЛИ ШЛАМА ОТ ОТРАБОТАННЫХ БАТАРЕЙ ИЛИ СВИНЦОВОГО МАТЕРИАЛА В ВИДЕ ВЫСОКОЧИСТОГО КАРБОНАТА СВИНЦА И/ИЛИ ОКСИКАРБОНАТА СВИНЦА

... «Влажный» способ слабого влияния окружающей среды регенерирует содержание свинца электродного шлама и/или минерального сырья, содержащего свинец, в полезный карбонат свинца высокой чистоты, который преобразовывается в оксид свинца высокой чистоты за счет термической обработки в печи при относительно невысокой температуре, которая отлично пригодна для изготовления активных электродных паст к новым батареям или для других использований. Способ по сути состоит из следующих этапов: а) добавление серной кислоты к суспензии кислого выщелачивания исходного материала с примесями с помощью разных кислот для преобразования всех растворенных соединений свинца в нерастворимый сульфат свинца, б) отделение твердой фазы, образованной сульфатом свинца и нерастворенными примесями, от раствора для кислого выщелачивания, в) выборочное растворение сульфата свинца, который содержится в вышеупомянутой отделенной твердой фазе, в водном растворе предназначенной для растворения соединения свинца, который, желательно ...

Method Of WiFi Client Continuously Ny Amount Of Zinc (Zinc) And Lead (Pb-) In Materials, Containing Iron (Of Fe)

METHOD OF HYDRO METALLURGICAL TREATMENT OF FOR EXTRACTING PRECIOUS, NON-FERROUS AND RARE ELEMENTS

METHOD OF EXTRACTION OF VALUABLE COLLABORATION

Method for recovering valuable metals

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.

METHOD FOR RECOVERING METAL IN SOLID WASTE

The present invention relates to a method for recovering metal in a solid waste. According to the present invention, the method for recovering metal enables almost metal remained in a vehicle crushing residue (ASR) by using inorganic acid to be leached. Moreover, the present invention can recover the metal from leaching solution at high efficiency by using a small amount of a zerovalent ferrous compound and hydrogen peroxide. COPYRIGHT KIPO 2017 (AA) Recovering rate of a metal (BB) Iron [Fe] (CC) Chromium [Cr] (DD) Lead [Pb] (EE) Zinc [Zn] (FF) Nickel [Ni] (GG) Cadmium [Cd] ...

Zinc and lead recovery from metallurgical sludges and dusts - by caustic soda leaching, solid-liq. sepn. and cementation

SETT ATT ATERVINNA BLY FRAN BLYAVFALL

PROCESS FOR THE RECOVERY OF LEAD FROM SCRAP BATTERIES

A process for the treatment of battery paste originating from spent batteries, wherein the battery paste is subjected to a first lead precipitation step at high alkalinity to partially precipitate and separate the lead, the liquid residue thereof is subjected to a second lead precipitation step at lower alkalinity to precipitate and separate remaining lead, and a sodium sulphate solution remains, is improved according the invention. Thus, the battery paste can be subjected to a filtration step before said first lead precipitation step, wherein the solid fraction of the filtration step is subjected to the lead precipitation step. The sodium sulphate solution remaining after the second lead precipitation step is subjected to a biological sulphate reduction and then to a controlled biological sulphide oxidation step to produce elemental sulphur and a reusable alkaline solution.

RECOVERY OF CHEMICAL VALUES FROM INDUSTRIAL WASTES

A method for the recovery of chemical values, such as metals including zinc, zinc oxide, iron-carbon feedstocks, lead and cadmium, from industrial waste streams which entails treating the waste streams with carbon and an ammonium chloride solution, separating any undissolved components from the solution, displacing metal ions including lead and cadmium from the solution using zinc metal, further treating the solution to remove zinc compounds therefrom, further treating the zinc compounds and the undissolved components with a dissolving solution, and further treating the displaced metal ions to recover lead, cadmium and zinc therein using various methods including electrolysis.

Recovery of metal values from zinc plant residues

A process is disclosed for recovering zinc, lead, copper and precious metals from zinc plant residue, said process comprising leaching the residue with return zinc spent electrolyte, neutralizing residual acid and reducing ferric iron in the solution by addition of zinc sulphide concentrate in the presence of a limited quantity of oxygen, flotation of the resulting slurry to separate unreacted zinc sulphide, treatment of flotation tailings with sulphur dioxide and elemental sulphur to further leach iron, zinc and impurity elements and precipitate copper, flotation of the resulting slurry to separate a copper sulphide concentrate, thickening, filtering and washing of the flotation tailings followed by addition of lime and sodium sulphide to activate lead sulphate and flotation of a lead concentrate from the residue. Iron and impurity elements are precipitated from the copper flotation tailings thickener overflow solution by addition of zinc hydroxide sludge, lime and oxygen to produce a ...

Hydrometallurgical method for recovering metal materials from spent lead-acid storage batteries

In the method the ground scraps are screened to separate the pole active material, i.e. Pb and PbO2, as fines. This active material is then reacted in the presence of a strong alkaline solution to yield a minium precipitate. Minium may be subsequently treated with an appropriate acid, such as fluoboric acid, freed of antimony by precipitating the latter with metal lead, and then subjected to electrolysis to recover lead.

Methods for purifying and recycling lead from spent lead-acid batteries

The present disclosure relates to methods by which lead from spent lead-acid batteries may be extracted, purified, and used in the construction of new lead-acid batteries. A method includes: (A) forming a mixture including a carboxylate source and a lead-bearing material; (B) generating a first lead salt precipitate in the mixture as the carboxylate source reacts with the lead-bearing material; (C) increasing the pH of the mixture to dissolve the first lead salt precipitate; (D) isolating a liquid component of the mixture from one or more insoluble components of the mixture; (E) decreasing the pH of the liquid component of the mixture to generate a second lead salt precipitate; and (F) isolating the second lead salt precipitate from the liquid component of the mixture. Thereafter, the isolated lead salt precipitate may be converted to leady oxide for use in the manufacture of new lead-acid batteries.

RECOVERING LEAD FROM A MIXED OXIDIZED MATERIAL

In an example of a method for recovering lead from a mixed oxidized lead material, methane sulfonic acid is selected as a leaching acid for the mixed oxidized lead material. The mixed oxidized lead material is exposed to a solution including the methane sulfonic acid, which leaches lead from any of a lead oxide or a lead carbonate in the mixed oxidized lead material, and generates a liquid leachate including a lead-methane sulfonate salt. The liquid leachate is purified, and lead is recovered from the purified liquid leachate using electrolysis.

ПЕРЕРАБОТКА СВИНЕЦСОДЕРЖАЩИХ ОТХОДОВ

Изобретение относится к переработке отходов, а именно свинецсодержащих отходов, и может быть использовано для переработки активной массы пластин отработанных свинцово-кислотных аккумуляторных батарей. Свинецсодержащие отходы растворяют в водном растворе первой кислоты с образованием раствора первой соли свинца. Добавляют лимонную кислоту в раствор первой соли свинца в количестве, составляющем вплоть до 0,67 моля лимонной кислоты на 1 моль ионов свинца, с образованием обедненного свинцом раствора и осадка второй соли свинца. Превращают осадок второй соли свинца в оксид свинца, причем первая соль свинца имеет более высокую растворимость в воде, чем вторая соль свинца. Полученный оксид свинца используют для изготовления пластин аккумуляторных батарей в свинцово-аккумуляторной батарее. Обеспечивается получение чистого оксида свинца, пригодного для непосредственного применения в пластинах аккумуляторных батарей, без применения большого избытка реагентов. 21 з.п. ф-лы, 5 пр.

СПОСОБ ПЕРЕРАБОТКИ ОТСЛУЖИВШИХ ЭЛЕКТРОННО-ЛУЧЕВЫХ ТРУБОК

ИЗВЛЕЧЕНИЕ СВИНЦА В ФОРМЕ ВЫСОКОЧИСТЫХ КАРБОНАТОВ СВИНЦА ИЗ ОТРАБОТАННЫХ СВИНЦОВЫХ БАТАРЕЙ, ВКЛЮЧАЯ ЭЛЕКТРОДНУЮ ПАСТУ

... 1. Способ извлечения свинцового содержания из неочищенной электродной пасты или шлама от отработанных свинцовых батарей и/или свинцового минерала в форме высокочистого карбоната свинца и/или оксикарбоната свинца, включающий стадии восстановления диоксида свинца, возможно содержащегося в исходном материале, и растворения оксида свинца и любого другого растворимого соединения или вещества в кислотном выщелачивающем растворе, отличающийся тем, что выщелачивающая кислота принадлежит к группе, состоящей из уксусной кислоты, азотной кислоты, фторборной кислоты и кремнефтористоводородной кислоты, и способ включает следующие стадии: ! a) добавление серной кислоты к кислотной выщелачивающей суспензии исходного неочищенного материала для превращения растворенных соединений свинца в нерастворимый сульфат свинца; ! b) отделение твердой фазы, состоящей из сульфата свинца и нерастворенных примесей, от кислотного выщелачивающего раствора; ! c) селективное растворение сульфата свинца, содержащегося в указанной ...

VERFAHREN ZUR BEHANDLUNG SULFATIERTER BLEIVERBINDUNGEN ZUR RUECKGEWINNUNG METALLISCHEN BLEIS UND EINES SULFATS HOHER REINHEIT, SOWIE ANLAGE ZUR DURCHFUEHRUNG DES VERFAHRENS

METAL RECOVERY

HYDROMETALLURGICAL PROCESS

PROCEDURE FOR THE PRODUCTION ZINKERZEN OR CONCENTRATES OUTGOING PRODUCTION OF ELECTROLYTES FOR THE ZINC ELECTROLYSIS RESULTING ARREARS, ROASTED FROM LEAD AND SILVER WITH THE OF, OUT OF WHICH ZINC LARGE IS DISTANT

METHOD AND SYSTEM FOR EXTRACTING METAL FROM GLASS WASTE

Remediation of heavy metals in ammunition traps and shooting ranges

Treatment of fly ash/apc residues including lead salt recovery

Process for the manufacture of lead oxide

Integrated recovery of metals from complex substrates

Described is a method of recovering a metal from a substrate having a metal sulphide, metal oxide, or combination thereof, by contacting the substrate with an aqueous oxidant to oxidize the metal sulphide to elemental sulphur and oxidized metal or convert the complex metal oxide to a metal salt, contacting the oxidized metal or simple metal oxide with ammonium hydroxide to form soluble a ammine complex of the metal to obtain a leachate and residual solids; separating the leachate from the residual solids; and recovering the metal.

PROCESS OF REGENERATING AND RECOVERING LEAD FROM LEAD SULPHATE-CONTAINING WASTES

This invention relates to a process of regenerating and recovering lead from lead sulphate-containing wastes which comprises (i) contacting a lead sulphate-containing waste with an aqueous solution of an alkaline substance both capable of transforming said lead sulphate into a sparingly water-soluble or waterinsoluble lead salt and capable of producing a readily watersoluble or water-soluble sulphate as by-product, (ii) subjecting to roast-reduction solid phase obtained by solidliquid separation of the reaction product so formed to regenerate and recover lead and (iii) double decomposing liquid phase obtained by said solid-liquid separation to recover said alkaline substance in a form of an aqueous solution for reusing in said contact step of (i). The process of this invention is an improved process capable of regenerating and recovering high purity lead low in costs as well as to commercial advantage without trouble of waste gas disposal in excellent recovery from lead sulphate-containing ...

PROCESS FOR TREATING SULPHATED LEAD COMPOUNDS FOR RECOVERING METALLIC LEAD AND A HIGH-PURITY SULPHATE AND AN INSTALLATION THEREFOR

METHOD FOR THE TREATMENT OF IRON-CONTAINING SLUDGE

The invention is related to a method for the treatment of sludge containing iron and between 4.5% to 12% by weight of zinc. This method includes a leaching step wherein leaching agents include hydrochloric acid and chlorate, and wherein the pH of the leachate directly resulting from this leaching step is set at a value strictly below 1.5. Recycling method and treatment installation associated.

PROCESS FOR REDUCING THE AMOUNTS OF ZINC (ZN) AND LEAD (PB) IN MATERIALS CONTAINING IRON (FE)

The present invention relates to a process for reducing the amounts of zinc and lead in starting materials comprising iron which comprises the steps of: - selectively leaching Zn and Pb comprised in the starting materials by mixing the starting materials with hydrochloric acid and an oxidizing agent comprising at least 5 wt-% of manganese dioxide in one or several reactor(s) at a temperature superior or equal to 35° C and at a p H comprised between 0,5 and 3,5, - filtrating the mixture obtained in order to separate the solid and the filtrate, - washing the solid with water, the resulting solid comprising mainly Fe, a reduced amount of Zn and Pb compared to the original starting materials, - recovering the filtrate of step b) and the washing water of step c) which comprise chloride, solubilized Zn and Pb in one or several reactor(s), - precipitating solubilized Zn, Pb in the recovered filtrate and the washing water by mixing with a neutralizing agent, - filtrating and washing the solid residues ...

METHOD FOR PRODUCING IRON FEEDSTOCK

A method for producing an iron-based feedstock suitable for use as the feedstock for steel mills, from industrial waste streams, by treating the waste stream with an ammonium chloride leaching solution, separating the undissolved precepitates comprising iron compounds from the leachant solution, and further treating the undissolved precipitants by elevated temperature roasting, resulting in the iron-based feedstocks.

TREATMENT OF FLY ASH/APC RESIDUES INCLUDING LEAD SALT RECOVERY

The present invention relates to a process for treating fly ash/APC residues chlorides, sulphates, earth alkali metals selected from the group consisting of calcium, potassium, and sodium, and heavy metals selected from the group consisting of lead, which residues are obtained from air pollution control processes that utilize dry/semi-dry lime injection, such that said residues may be disposed of as non-hazardous materials. The process comprises the sequential steps of: (a) washing and agitating the fly ash/APC residue (20) with water (50) to form a residue slurry containing solubilized lead salts and calcium chloride; (b) filtering (42) the residue slurry to remove a filtrate (46) having a pH of higher than about 11.8 and containing the solubilized lead salts and calcium chloride; and (c) recovering a first calcium enriched filter cake (44). The solubilized lead salts are then removed from the filtrate by the sub-steps of: (i) adding sufficient hydrochloric acid (58) to the filtrate to ...

SYSTEMS AND METHODS CONTINUOUS ALKALINE OF PROCESSING LEAD - ACID STORAGE BATTERIES

СПОСОБ РЕГЕНЕРАЦИИ СВИНЦА В ФОРМЕ СВИНЦОВОГО СОЕДИНЕНИЯ ВЫСОКОЙ ЧИСТОТЫ ИЗ ВОССТАННОВЛЕННОГО ЭЛЕКТРОДНОГО ШЛАМА ИЗ ОТРАБОТАННЫХ СВИНЦОВЫХ АККУМУЛЯТОРНЫХ БАТАРЕЙ И/ИЛИ ИЗ СВИНЦОВЫХ МИНЕРАЛОВ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Предложен способ, предназначенный для регенерации свинца в форме свинцового соединения высокой чистоты из загрязненного электродного шлама отработанных аккумуляторных батарей и/или из свинцовых минералов, включающий: а) образование суспензии из неочищенного материала, содержащего свинец, в предназначенном для растворения сульфата свинца водном растворе соли, выбранной из группы, состоящей из ацетатов натрия, калия и аммония, б) добавление к этой суспензии серной кислоты в количестве, достаточном для превращения всех оксидов свинца в сульфат свинца, способного растворяться в растворе соли уксусной кислоты, и медленное добавление к этой суспензии перекиси водорода или сульфита, или продувки сквозь нее пузырьков сернистого ангидрида в количестве, необходимом для восстановления двуоксида свинца до оксида свинца, который в конце под действием серной кислоты превращается в растворимый сульфат свинца, в) отделение чистого раствора соли уксусной кислоты с растворенным в нем сульфатом свинца от ...

METHOD OF HYDRO METALLURGICAL TREATMENT OF FOR EXTRACTING PRECIOUS, NON-FERROUS AND RARE ELEMENTS

PROCESS FOR RECOVERING LEAD AND SILVER CONTAINED IN RESIDUES OBTAINED FROM ZINC AND OR COMPLEX CONCENTRATES

HYDROMETALLURGIC PROCESS FOR THE RECOVERY OF METALLIFEROUS SUBSTANCES STARTING FROM ACID ACCUMULATORS WITH LEAD USE

폐전자기판으로부터 금속의 회수방법

... 폐전자기판으로부터, 레어메탈, 귀금속, 기타의 금속 등의 여러 가지 금속을 효율적으로 회수할 수 있는 방법을 제공한다. 본 발명에 의하면, 폐전자기판을 유리와 함께 용융함으로써 유리상과, 상기 폐전자기판과 상기 유리의 적어도 한쪽에 포함된 금속에 기인하는 금속상을 형성하는 용융공정과, 상기 유리상으로부터 상기 금속상을 분리하여 회수하는 금속 회수 공정과, 상기 유리상을 산용액과 접촉시키는 산추출 공정을 구비하고, 상기 유리상은 실리카를 주성분으로 하는 제1상과 제1상보다도 산용액에 대한 용해도가 높은 제2상을 포함하고, 상기 산추출 공정에서는 상기 제2상을 그 중에 포함된 잔류 금속과 함께 상기 산용액에 용해시켜 상기 잔류 금속이 용해된 상기 산용액을 회수하는 폐전자기판으로부터 금속을 회수하는 방법이 제공된다.

processo para a dessulfurização de materiais e/ou resíduos que contêm sulfato de chumbo ao empregar um amino composto

PRODUCTION OF ZINC OXIDE FROM COMPLEX SULFIDE CONCENTRATES USING CHLORIDE PROCESSING

An apparatus and a process for producing zinc oxide from a zinc-bearing material are provided. The process comprises the steps of leaching the complex sulfide material with hydrochloric acid, ferric chloride, and oxygen; precipitating iron from the leach solution using lime and oxygen; removing copper, silver, cadmium, cobalt and lead from the leach solution by cementation with zinc dust; precipitating zinc oxide from the leach solution using lime; and regenerating HCI from a calcium chloride leach filtrate solution to regenerate hydrochloric acid and precipitate gypsum. Related processes for recovering copper, silver, lead, and iron from complex sulfide materials and for recovering lead from residue by solubilizing lead chloride and precipitating it with lime are also provided.

Process for the recycling of electrical batteries, assembled printed circuit boards and electronic components

For the recycling of electrical batteries, in particular of a mixture of high-power batteries for equipment of any chemical composition, and also of assembled printed circuit boards and electronic components, a pyrolysis of the unsorted mixture is carried out at a temperature between 450° and 650° C., then an electrolysis of the pyrolysis slag is carried out and subsequently a separation of the electrolysis products and removal of the products accumulating at the electrodes is carried out. In this process, which is economically profitable, no environment-polluting residues are produced and an initial sorting of material becomes unnecessary.

Dross removal

This invention relates to for devices, systems, and methods for separating dross, carried by molten solder, into solder and residue.

Hydrometallurgical process for recovering in pure metal form all the lead contained in the active mass of exhausted batteries

A totally hydrometallurgical process for recovering in pure metal form all the lead contained in the active mass of used batteries, separated from the other processes, and desulphurized according to known processes, is disclosed. The raw material is leached with an acid suitable for electrowinning. The residue from the acidic leaching is substantially formed by PbO2 and organic substances. This residue is transformed into lead sulphate by reacting it with concentrated sulphuric acid, and the so obtained lead sulphate is recycled to the desulphurization step. By this system, a nearly complete solubilization of the lead contained in the active mass of the batteries is achieved, with the absence of any polluting residues. The electrolyte is the submitted to electrolysis in order to recover lead as cathodes.

РЕГЕНЕРАЦИЯ СВИНЦА В ФОРМЕ ВЫСОКОЧИСТОГО СОЕДИНЕНИЯ СВИНЦА ИЗ ЭЛЕКТРОДНОЙ ПАСТЫ ИЛИ ШЛАМА, ИЗВЛЕЧЕННОЙ ИЗ ВЫБРОШЕННЫХ СВИНЦОВЫХ АККУМУЛЯТОРОВ, И/ИЛИ ИЗ СВИНЕЦСОДЕРЖАЩИХ МИНЕРАЛОВ

... 1. Способ регенерации из свинца неочищенной электродной пасты или шлама от выброшенных свинцовых аккумуляторов и/или свинецсодержащих минералов в форме высокочистого соединения свинца, включающий стадииа) суспендирования неочищенного свинецсодержащего материала в растворяющем сульфат свинца водном растворе соли, относящейся к группе, образованной из ацетатов натрия, калия и аммония;b) добавления к суспензии серной кислоты в количестве, достаточном для превращения всех оксидов свинца в сульфат свинца, растворимый в растворе соли уксусной кислоты, и медленного добавления к суспензии либо пероксида водорода, либо сульфита или барботирования через нее сернистого ангидрида в степени, приспособленной для восстановления любого количества диоксида свинца до оксида свинца, в конечном счете, превращаемый в растворимый сульфат свинца под действием серной кислоты;с) отделения полупрозрачного раствора соли уксусной кислоты, содержащего растворенный сульфат свинца, от остатка твердой фазы, включающего ...

СПОСОБ ВОССТАНОВЛЕНИЯ ОКИСИ ЦИНКА

Способ восстановления окиси цинка из промышленных отработанных материалов, содержащих различные компоненты, в том числе цинк, свинец, железо и кадмий, включающий стадии обработки отработанных материалов раствором хлорида аммония, поддерживаемым при повышенной температуре, отделение нерастворившихся компонентов из раствора, обработку раствора металлическим цинком для вытеснения нежелательных металлических ионов из раствора, охлаждение раствора для осаждения из него соединений цинка, промывание осажденных соединений цинка для удаления таких нежелательных соединений, как диаминодихлорид цинка, и высушивание оставшегося соединения цинка, которое является по существу гидроокисью цинка, с получением в результате чистой окиси цинка.

СПОСОБ ОБРАБОТКИ ЖЕЛЕЗОСОДЕРЖАЩЕГО ШЛАМА

Изобретение относится к гидрометаллургической обработке железосодержащего шлама. Способ включает выщелачивание железосодержащего шлама кислотой и окисляющим агентом с получением окисленного продукта выщелачивания и последующее осаждение железа, при котором окисленный продукт выщелачивания смешивают с нейтрализующим агентом с получением смеси, образованной из твердой части, содержащей осажденное железо, и жидкой части. Нейтрализующий агент содержит по меньшей мере 30 мас.% пыли, извлеченной в ходе обработки газа, использующей мешочный фильтр, при производстве чугуна, производстве стали, производстве кокса или агломерировании. Способ оказывает уменьшение воздействия на окружающую среду. 5 з.п. ф-лы, 1 табл., 1 ил.

СПОСОБ ДЛЯ УДАЛЕНИЯ СВИНЦА, КАДМИЯ И ЦИНКА ИЗ ПЫЛИ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Изобретение относится к производству электротермическим путем желтого фосфора, в частности, к способу удаления свинца, кадмия и цинка из образующейся в данном производстве пыли. Способ включает растворение пыли в фосфорной кислоте с содержанием по меньшей мере 25 мас.% P 2 O 5 при температуре выше 60 o C в аэрируемой реакционной зоне с последующим отделением твердого остатка от фосфорной кислоты. Предпочтительный вариант осуществления способа также предусматривает использование фосфорной кислоты с молярным соотношением Na/P менее 0,32, причем время растворения пыли может составлять 22-26 ч. Устройство для осуществления данного способа содержит по меньшей мере один реактор, снабженный трубопроводами для подачи фосфорной кислоты, пыли, суспендированной в воде, переливным трубопроводом, нагревательным устройством, трубой для ввода воздуха и мешалкой. Также оно содержит промежуточную емкость, соединенную с реактором переливным трубопроводом и емкость для пульпы, соединенную с плотным фильтром, ленточный фильтр для фильтрации шлама из емкости для пульпы и коллектор, в который поступает осветленный фильтрат с плотного фильтра. 2 с. и 8 з.п. ф-лы, 2 табл., 1 ил. 65018 0с%с ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2081 059 ' 13) Сл С О1В 25/027 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 93044978/25, 09.09.1993 (30) Приоритет: 10.09.1992 ОЕ Р 4230223.4 (46) Дата публикации: 10.06.1997 (56) Ссылки: Патент США М 4537756, кл. 423-323, 1985. (71) Заявитель: Хехст АГ (0Е) (72) Изобретатель: Дирк Корнелис Вермайре[М|], Бернардус Йоханнес Дамман[ МЕ] (73) Патентообладатель: Хехст АГ (0Е) (54) СПОСОБ ДЛЯ УДАЛЕНИЯ СВИНЦА, КАДМИЯ И ЦИНКА ИЗ ПЫЛИ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ (57) Реферат: Изобретение относится к производству электротермическим путем желтого фосфора, в частности, к способу удаления свинца, кадмия и цинка из образующейся в данном производстве пыли. Способ — включает растворение пыли в фосфорной ...

СПОСОБ ПОЛУЧЕНИЯ МЕТАЛЛИЧЕСКОГО СВИНЦА ИЗ ДЕСУЛЬФИРОВАННОЙ ПАСТЫ, ФОРМИРУЮЩЕЙ АКТИВНУЮ ЧАСТЬ СВИНЦОВОГО АККУМУЛЯТОРА

... 1. Электролитический способ получения металлического свинца из десульфированной свинцовой пасты, формирующей активную часть свинцового аккумулятора, включающий следующие стадии: ! а) выщелачивание десульфированной пасты посредством приведения ее в контакт с раствором, включающим хлорид аммония, с образованием раствора после выщелачивания и выделением газообразного CO2; ! б) отделение первого твердого остатка и первого осветленного раствора после выщелачивания из раствора после выщелачивания, поступающего со стадии (а); ! в) выщелачивание твердого остатка, отделенного на стадии (б), посредством приведения его в контакт с раствором, включающим хлорид аммония и перекись водорода; ! г) отделение второго твердого остатка и второго осветленного раствора после выщелачивания из раствора после выщелачивания, поступающего со стадии (в); ! д) соединение первого осветленного раствора после выщелачивания, поступающего со стадии (б), со вторым осветленным раствором после выщелачивания, поступающим со ...

СПОСОБ ДЕСУЛЬФИРОВАНИЯ АКТИВНОЙ МАССЫ И РЕШЕТОК СВИНЦОВЫХ АККУМУЛЯТОРОВ

... 1. Способ десульфирования активной массы и/или решеток, содержащихся в свинцовых аккумуляторах, отличающийся тем, что он включает десульфирование в две стадии, где на первой стадии сульфат свинца из активной массы приводят в контакт с Na2CO3 в растворе для взаимодействия согласно следующей реакции: 3PbSO4+3Na2СО3+Н2О→Pb3(СО3 )2(ОН)2+3Na2SO4+СО2 (I) 2Pb3(СО3)2(ОН)2+2Na2CO3→3NaPb2(СО3)2OH+NaOH (II) получая дисперсию, содержащую карбонизированную активную массу на основе основных карбонатов свинца, которую на второй стадии приводят во взаимодействие с CO2 согласно следующей реакции: Pb3(СО3)2(ОН)2+CO2→3PbCO3+H2O (VII) NaPb2(СО3)2+CO2→2PbCO3+NaHCO3 (VIII) с образованием дисперсии, содержащей десульфированную активную массу на основе PbCO3. 2. Способ по п.1, отличающийся тем, что на первой стадии десульфирования сульфат свинца активной массы приводят в контакт с избыточным количеством Na2СО3 по отношению к теоретическому количеству для его десульфирования. 3. Способ по п.1 или 2, отличающийся ...

Способ утилизации электрических батарей, печатных плат с радиодеталями и элементами электронных схем

For the recycling of electrical batteries, in particular of a mixture of high-power batteries for equipment of any chemical composition, and also of assembled printed circuit boards and electronic components, a pyrolysis of the unsorted mixture is carried out at a temperature between 450 DEG and 650 DEG , then an electrolysis of the pyrolysis slag is carried out and subsequently a separation of the electrolysis products and removal of the products accumulating at the electrodes is carried out. In this process, which is economically profitable, no environment-polluting residues are produced and an initial sorting of material becomes unnecessary.

Verfahren und Anlage zum Entfernen von Blei, Cadmium und Zink aus Stäuben

VERFAHREN ZUR REZYKLIERUNG VON ELEKTRISCHEN BATTERIEN, BESTUECKTEN PRINTPLATTEN UND ELEKTRONISCHEN BAUELEMENTEN

Desulfurisation of lead-containing waste

PROCESS FOR RECOVERING LEAD AND SILVER CONTAINED IN RESIDUES OBTAINED FROM ZINC AND OR COMPLEX CONCENTRATES

... 1337739 Recovery of lead and silver ASTURIANA DE ZINC SA 26 Nov 1970 [22 Dec 1969] 56207/70 Heading C1A Lead and silver contained in the residues remaining after zinc-containing concentrates have been roasted and treated with acid to dissolve zinc, by leaching the residues at ambient temperature with an acidified solution containing chloride ions. The solution is preferably a saturated solution of NaCl acidified with HCl. If H 2 SO 4 is used to acidify the solution, CaCl 2 is preferably added to precipitate the sulphate as CaSO 4 . CuCl may be added to the solution to promote oxidation of sulphides in the residue. The silver and lead may be recovered from the solution by precipitation as sulphides, or by consectuive cementation. Silver may be precipitated by cementation with lead, and the lead then obtained by cementation with zinc. The zinc may then be recovered as an insoluble salt, washed free of chloride and recycled.

PROCEDURE FOR THE RECYCLING OF ELECTRICAL BATTERIES, PRINTING LEADER INSTRUMENT PANELS AND ELECTRONIC CONSTRUCTION UNITS.

PROCEDURE FOR THE PRODUCTION OF ZINC OXIDE

PROCESSING OF FLUGSTAUB/APC RESIDUAL SUBSTANCES INCLUDING THE SEPARATION OF BLEISÄLZEN

PROCEDURE FOR THE RECUPERATION OF THE LEAD PORTION FROM ACCUMULATOR MUD.

PROCEDURE FOR THE TREATMENT AND RE-USE OF A STRIPPING SOLUTION

Battery paste recycling process

Battery recycling

Method of washing anode slime from lead-bismuth alloy electrolysis

A method of washing anode slime from lead-bismuth alloy electrolysis is disclosed, wherein a lead fluorosilicate solution with high concentration can be obtained by using the anode slime from lead-bismuth alloy electrolysis as raw material, which is characterized in that the method includes the following steps：(1) pretreating the anode slime, (2) primarily soaking the anode slime, (3) secondarily soaking the anode slime. A method of washing anode slime from lead-bismuth alloy electrolysis, and obtaining a soaking solution containing a lot of lead ions and fluorosilicic anions is provided. The soaking supernatant is added directly into the electrolyte-circulating system of lead-bismuth alloy electrolysis, which increases the utilization rate of lead ions and fluorosilicic anions, and improves the environment for smelting bismuth and silver, while reduces production cost for smelting lead, bismuth and silver. The method optimizes the process for the lead-bismuth alloy electrolysis, and solves ...

Beneficiation of furnace dust for the recovery of chemical and metal values

WET-CLASSIFYING METHOD FOR RECOVERY OF CARBON AND IRON-BEARING PARTICLES

METHOD FOR THE TREATMENT OF METALLIC PARTICLES AND OBJECTS CONTAMINATED WITH METALLIC PARTICLES

Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.

WET-CLASSIFYING METHOD FOR RECOVERY OF CARBON AND IRON-BEARING PARTICLES

WET-CLASSIFYNG METHOD FOR RECOVERY OF CARBON AND IRON-BEARING PARTICLES A method for separating carbon and iron bearing particles from zinc and lead bearing particles contained in an aqueous slurry of blast furnace dust and the recovery and reuse of the carbon and iron bearing particles as charge material in a blast furnace is described. An aqueous slurry of blast furnace flue dust is collected in a thickener. The thickened aqueous slurry is strained to remove large foreign matter and make a size separation at about 4 mm. The plus 4 mm particles are generally wasted. The aqueous slurry containing the minus 4 mm particles is fed into at least one hydrocyclone where a size separation is made at between about 3 and 5 microns. A substantial portion of the carbon and iron bearing particles report to the hydrocyclone underflow and a substantial portion of the zinc and lead bearing particles report to the hydrocyclone overflow. The carbon and iron bearing particles are passed to a preparation ...

RECOVERY OF METAL VALUES FROM ZINC PLANT RESIDUES

... 2076025 9109146 PCTABS00005 A process is disclosed for recovering zinc, lead, copper and precious metals from zinc plant residue, said process comprising leaching the residue with return zinc spent electrolyte, neutralizing residual acid and reducing ferric iron in the solution by addition of zinc sulphide concentrate in the presence of a limited quantity of oxygen, flotation of the resulting slurry to separate unreacted zinc sulphide, treatment of the flotation tailings with sulphur dioxide and elemental sulphur to further leach iron, zinc and impurity elements and precipitate copper, flotation of the resulting slurry to separate a copper sulphide concentrate, thickening, filtering and washing of the flotation tailings followed by addition of lime and sodium sulphide to activate lead sulphate and flotation of a lead concentrate from the residue. Iron and impurity elements are precipitated from the copper flotation tailings thickener overflow solution by addition of zinc hydroxide sludge ...

METHOD FOR THE RECOVERY OF ZINC OXIDE

A method for the recovery of zinc oxide from industrial waste materials of various components, including zinc, lead, iron and cadmium, comprising th e steps of treating the waste material with an ammonium chloride solution maintained at an elevated temperature, separating the undissolved components from the, solution, treating the solution with zinc metal to displace undesired metal ions from the solution, cooling the solution to precipitate therefrom zinc compounds, washing the precipitated zinc compounds to remove unwanted compounds such as diamino zinc dichloride, and drying the remaining zinc compound which is essentially hydrated zinc oxide, resulting in essentially pure zinc oxide.

Lead sulfate recycling process

PROCESS FOR THE METAL RECOVERY OF GREAT INDUSTRIAL VALUE CONTENTS IN A MUD

LA PRESENTE INVENTION CONCERNE UN PROCEDE DE RECUPERATION DE METAUX DE GRANDE VALEUR INDUSTRIELLE A PARTIR D'UNE BOUE CONTENANT DU PLOMB, DE L'ANTIMOINE, DE L'ARGENT, DE L'ARSENIC, DU BISMUTH ET DU CUIVRE PAR UN PROCEDE PAR VOIE HUMIDE, QUI COMPREND UNE ATTAQUE AVEC DE L'ACIDE CHLORHYDRIQUE EN SOLUTION AQUEUSE AVEC EN MEME TEMPS UNE INJECTION D'AIR. UTILISATION DE CE PROCEDE POUR RECUPERER DES METAUX D'UNE FACON ECONOMIQUE ET ECOLOGIQUE. THE PRESENT INVENTION CONCERNS A PROCESS FOR THE RECOVERY OF METALS OF HIGH INDUSTRIAL VALUE FROM A SLUDGE CONTAINING LEAD, ANTIMONY, SILVER, ARSENIC, BISMUTH AND COPPER BY A WET PROCESS , WHICH INCLUDES AN ATTACK WITH HYDROCHLORIC ACID IN AQUEOUS SOLUTION AT THE SAME TIME INJECTION OF AIR. USE OF THIS PROCESS TO RECOVER METALS IN AN ECONOMIC AND ECOLOGICAL WAY.

METHOD FOR RECOVERING TIN FROM USED TIN

The present invention relates to a method for collecting tin from used tin, comprising: a step of manufacturing metal stone of used tin; a step of removing iron; a step of removing copper; a step of removing lead; a step of removing zinc; a step of separating precipitates; a step of neutralization and cleaning; and a step of filtering and drying process, thereby having inexpensive processing costs, having shorter refining time, and having less amount of reagent used. In addition, by obtaining high purity tin, efficiency in the method for recovering tin from used tin is excellent considering costs for processing waste liquid, investment in facilities, and manpower, and high purity tin can be provided for reuse in industries by recovering tin from the used tin. COPYRIGHT KIPO 2017 ...

PROCESS FOR REAPROVEITAMENTO OF ELECTRIC BATERIAIS CARDS OF INTEGRATED CIRCUITS ELECTRONIC PRINTED MATTERS AND COMPONENTS

REMOVAL OF LEAD FROM SOLID MATERIALS

A leaching composition that substantially removes lead from solid materials and a method of using said composition. Preferably, the concentration of lead in the solid materials following processing is low enough that the solid materials can be reused and/or disposed of at minimal cost to the processor. Preferably, the solid materials comprise glass, such as cathode ray tube glass.

METHOD AND SYSTEM FOR EXTRACTING METAL FROM GLASS WASTE

A method and systems are provided for extracting heavy metal from glass waste. Glass is initially crushed to a diameter size between about 10 nanometers and about 2 millimeters. The glass is then added to a tank having a solution of water and acid, where the acid removes metal from the surface of the glass particles. In some embodiments, the solution and glass particles are elevated to a configurable temperature above ambient temperature and circulated for a configurable period of time. The solution is then separated from the glass particles. In some embodiments, the glass particles are then rinsed while in transit to a final destination or in a separate rinsing tank.

A PROCESS FOR SEPARATION OF HEAVY METALS AND HALOGEN FROM WASTE MATERIAL OR RESIDUE

A process for separation of heavy metal and halogen from unwanted waste material or residue. Halogen is selectively extracted or washed out from the waste material. Metal is selectively extracted or washed out from the essentially halogen free waste material.

A PROCESS FOR SEPARATION OF HEAVY METALS AND HALOGEN FROM WASTE MATERIAL OR RESIDUE

ПЕРЕРАБОТКА ОТХОДОВ СВИНЦА

FIELD: metallurgy. SUBSTANCE: method of lead extraction from lead wastes containing one or more of Pb, PbO, PbO 2 and PbSO 4 includes treatment with aqueous solution of citric acid with production of lead citrate. Then lead citrate is extracted from the aqeuous solution, and the extracted lead citrate is converted into Pb and/or PbO. The method for processing of lead accumulator batteries, containing or more of Pb, PbO, PbO 2 and PbSO 4 includes mixing of a paste of lead plates of accumulator batteries with the aqueous solution of citric acid for production of lead citrate. Then lead citrate is extracted from the aqueous solution, and lead citrate is converted into lead and/or lead oxide. Further Pb and/or PbO are included into a plate of an accumulator battery. EFFECT: simplified process and its improved cost-effectiveness. 17 cl, 7 dwg, 8 tbl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 486 266 (13) C2 (51) МПК C22B 13/00 (2006.01) C22B 7/00 (2006.01) C22B 3/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ Приоритет(ы): (30) Конвенционный приоритет: 08.11.2006 GB 0622249.1 (73) Патентообладатель(и): КЕМБРИДЖ ЭНТЕРПРАЙЗ ЛИМИТЕД (GB) (43) Дата публикации заявки: 20.12.2010 Бюл. № 35 2 4 8 6 2 6 6 (45) Опубликовано: 27.06.2013 Бюл. № 18 (56) Список документов, цитированных в отчете о поиске: US 5292456 A, 08.03.1994. SU 1159958 A, 07.06.1985. US 5342449 A, 30.08.1994. WO 2005/007904 A1, 27.01.2005. RU 2274669 C1, 20.04.2006. 2 4 8 6 2 6 6 R U (86) Заявка PCT: GB 2007/004222 (06.11.2007) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 08.06.2009 (87) Публикация заявки РСТ: WO 2008/056125 (15.05.2008) Адрес для переписки: 190000, Санкт-Петербург, ООО "ПерфектАссистант", ВОХ-сервис 1125, пат. пов. М.И. Ниловой, рег. № 378 (54) ПЕРЕРАБОТКА ОТХОДОВ СВИНЦА и PbSO4, включает смешение пасты свинцовых пластин аккумуляторных батарей с водным раствором лимонной кислоты для получения цитрата свинца. Затем ...

Dross Removal

This invention relates to for devices, systems, and methods for separating dross, carried by molten solder, into solder and residue.

METHOD FOR RECYCLING LEAD FROM WASTE GLASS CONTAINING LEAD

Disclosed is a method for recycling lead from waste glass containing lead, which comprises the following steps: mechanical crushing waste glass containing lead, ball milling and screening to obtain glass powder containing lead; alkaline roasting the glass powder containing lead to obtain a roasted material; mixing polycarboxylic acid complexant and nitric acid to produce leaching agent, and then placing the roasted material into the leaching agent to obtain leachate; regulating pH value of the leachate to solidify metal ion to obtain precipitate, separating and removing impurities, rinsing and drying to obtain chemical product containing lead. The method avoids environment pollution caused by waste glass containing lead. 1. A method for treating waste glass containing lead , wherein , comprising:(1) providing glass containing lead, mechanically crushing, ball milling and sieving to obtain glass containing lead powders;(2) roasting glass containing lead powders with alkaline liquor to obtain a roasted material;(3) providing polycarboxylic acid complexing agent and nitric acid, mixing to produce leaching agent, immersing the roasted material in the leaching agent to obtain leachate;(4) regulating pH value of the leachate, precipitating metal ion to obtain precipitates, separating and removing impurities, rinsing and drying to obtain chemical product containing lead.2. The method as claimed in claim 1 , wherein claim 1 , roasting temperature in said step (2) is in the range of 500° C. to 700° C.3. The method as claimed in claim 2 , wherein claim 2 , roasting temperature in said step (2) is 600° C.4. The method as claimed in claim 1 , wherein claim 1 , said polycarboxylic acid complexing agent in step (3) is acetic acid or edetic acid.5. The method as claimed in claim 4 , wherein claim 4 , said polycarboxylic acid complexing agent in step (3) is acetic acid claim 4 , mixed with nitric acid according to the volume ratio of 3:1 to 9.6. The method as claimed in claim 1 , ...

Energy Efficient Salt-Free Recovery Of Metal From Dross

A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to burn non-recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue. When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt. 1. A process for treating dross containing a recoverable metal , in order to recover said metal , comprising:(a) charging a batch of dross, resulting from skimming of said dross in a metallurgical plant, into a furnace containing a filling material preheated to a high enough temperature to insure that said dross is thereby heated above the melting point of the metal to be recovered by transfer of energy stored in the filling material;(b) providing an inert atmosphere in the furnace by filling the furnace with inert gas, to prevent oxidation of the dross during the process;(c) rotating or oscillating the dross within the furnace to ensure proper transfer of heat between the hot filling material and the dross and heating of the dross to a temperature above the melting point of the recoverable metal, a separation thereof from a dross residue and from the filling material and its agglomeration at the bottom of the furnace;(d) removing from the furnace the recoverable free metal through a taphole or through the door and the dross residue through the door while leaving inside the ...

Energy efficient salt-free recovery of metal from dross

A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with good capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to burn non-recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue. When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt; in addition, the non-use of fluxing salt for the treatment means that the non-contaminated residue can be used as a cover for the electrolytic cells in the case of aluminum. In the case of zinc dross, the residue is a valuable zinc oxide by-product very low in contaminants.

METAL CEMENTING APPARATUS AND CONTINUOUS CEMENTATION METHOD BY MEANS OF SAME

The present invention relates, on one hand, to a metal cementing apparatus () formed by a vessel () with a liquid phase formed by a solution () containing noble metal, and a solid phase formed by a cementing metal or a less noble metal in contact with the solution (), where one of said phases moves at a high speed with respect to the other one, and the difference in speeds allows the cementation of the noble metal on the solid phase, and the simultaneous detachment and separation thereof, and comprises means for generating the movement of at least the phase with the high speed and removing means for removing the precipitated noble metal. The invention describes, on the other hand, a continuous cementation method consisting of passing a continuous flow of solution in a vessel (); reacting the solid phase with the liquid phase, where one of said phases moves at a high speed with respect to the other one, causing the fixing of the noble metal and the simultaneous detachment thereof; removing the precipitated noble metal. 1. A metal cementing apparatus wherein said metal cementing apparatus is formed by a vessel or a tank having therein a liquid phase formed by a solution containing a noble metal , and a solid phase formed by a cementing metal or a metal less noble than the one mentioned above , placed in contact with the solution characterized in that one of said phases moves at a high speed in relation to the other phase , with the difference in speeds being such that it allows the cementation of the noble metal on the solid phase and the simultaneous detachment and separation thereof , and comprises means for generating the movement of at least the phase having the high speed and removing means for removing the precipitated noble metal from the bottom of the tank to the outside thereof.2. The metal cementing apparatus of claim 1 , wherein the means for generating the movement comprises at least one shaft including at least one disc formed by cementing metal coupled ...

PROCESS FOR RECOVERING LEAD FROM A LEAD PASTEL AND USE THEREOF IN A PROCESS FOR RECOVERING LEAD-ACID ACCUMULATOR COMPONENTS

The present invention concerns a process for the recovery of lead from a lead pastel electrolytically, where the pastel contains lead sulfate. The process provides for the leaching of the non-desulfurised pastel and the subsequent removal of the sulfates by precipitation; the leachate containing the lead ions is then subjected to electrolysis for the recovery of metal lead. The present invention further relates to a process for the recovery of lead accumulator components, wherein the lead contained in the pastel of the accumulators is recovered according to the aforesaid process. 1. A process for recovering lead from a lead pastel comprising lead sulfate , the process comprising:{'sup': −', '+, 'sub': 4', '2, '(a) leaching said lead pastel with an aqueous leaching solution comprising chloride ions Cl and ammonium ions NH to produce an insoluble residue comprising PbOand a leachate comprising lead ions and sulfate ions;'}(b) separating said insoluble residue from said leachate;{'sub': '2', '(c) adding a precipitating agent selected from the group consisting of CaO, Ca(OH)and mixtures thereof to said leachate to form a precipitate comprising calcium sulfate and a supernatant comprising lead ions;'}(d) separating said precipitate from said supernatant; and{'sup': −', '+, '(e) applying an electrical potential to a cathode in contact with said supernatant to electrolytically produce metal lead and a regenerated leaching solution comprising chloride ions Cl and ammonium ions NH4.'}2. The process of claim 1 , wherein said supernatant claim 1 , before being fed to (e) claim 1 , is subjected to the following:(d1) adding to said supernatant a precipitating agent to form a precipitate comprising a calcium salt, said precipitating agent comprising an anion capable of forming a calcium salt with calcium ions remaining in solution after precipitation of calcium sulfate in (c), said calcium salt having a lower solubility than that of calcium sulfate; and(d2) separating said ...

METHOD FOR COMPREHENSIVE RECOVERY OF SILVER-CONTAINING LEAD SLAG

The main steps are as follows: purification, de-leading, recovery and filtration, dissolving lead, hot filtration, cooling filtration, washing and hot decomposition, silver is recycled as silver powder, lead was recovered in the form of red lead, yellow lead and chlorinated lead respectively. Compared to existing technologies, the invention adopts a wet process, the amount of waste gas and dust produced in the process of fire treatment is reduced; silver powder, red (yellow) lead and chloride lead were obtained, it can be sold as final product with high value-added features. The tail liquid produced by the process returns to the corresponding process respectively, and the tailless liquid is discharged. The pyrolysis flue gas returns to the lead removal process, flue gas treatment process is reduced, lead smoke pollution is avoided. This method has the characteristics of simple technics and pollution-free process. 1. A comprehensive recovery method of silver lead slag comprising:(1) Purification: add silver lead slag into ammonia-ammonium chloride solution, keep warm and stir, after filtration, the residue removal and the impurity removal solution are obtained;(2) De-leading: ammonium bicarbonate is added into the obtained purification liquid in (1), de-lead residue and de-lead solution were obtained by filtration;(3) Recovery and filtration: de-lead solution obtained in (2) is added into methanol to proceed silver reduction. methanol:silver is 1:4˜1:6 in molar ratio, after filtration, silver powder and reduced liquid were obtained, the solution after filtration is returned to (1) to process purification.(4) Dissolving lead: residue removal obtained in (1) is added into sodium chloride-hydrochloric acid solution, lead powder is added to process lead dissolve, after that, lead pulp is obtained;(5) Hot filtration: lead pulp obtained in (4) is heating filtrated to obtain lead-soluble slag, this slag is recovered by tri-chlorination;(6) Cooling filtration: lead-soluble ...

Method for the treatment of an object contaminated with metallic particles

Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.

Method for the treatment of metallic particles and objects contaminated with metallic particles

Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.

Removal of lead from solid materials

A leaching composition that substantially removes lead from solid materials and a method of using said composition. Preferably, the concentration of lead in the solid materials following processing is low enough that the solid materials can be reused and/or disposed of at minimal cost to the processor. Preferably, the solid materials comprise glass, such as cathode ray tube glass.

INTEGRATED RECOVERY OF METALS FROM COMPLEX SUBSTRATES

Described is a method of recovering a metal from a substrate having a metal sulphide, metal oxide, or combination thereof, by contacting the substrate with an aqueous oxidant to oxidize the metal sulphide to elemental sulphur and oxidized metal or convert the complex metal oxide to a metal salt, contacting the oxidized metal or simple metal oxide with ammonium hydroxide to form soluble a ammine complex of the metal to obtain a leachate and residual solids; separating the leachate from the residual solids; and recovering the metal. 1. A method for recovering a metal from a substrate comprising a metal sulphide , metal oxide , or combination thereof , the method comprising:a) contacting the substrate with an aqueous oxidant to oxidize the metal sulphide to elemental sulphur and oxidized metal and/or to convert the metal oxide to metal salt;b) contacting the oxidized metal and metal salt with ammonium hydroxide to form a soluble metal ammine complex to obtain a leachate and residual solids;c) separating the leachate from the residual solids; andd) recovering the metal from one or more of the leachate and the residual solids.2. The method of claim 1 , wherein the aqueous oxidant is selected from the group consisting of a water-soluble peroxide claim 1 , a water-soluble perchlorate claim 1 , a water-soluble hypochlorite and ferric iron.3. The method of claim 2 , wherein the aqueous oxidant is ferric iron claim 2 , optionally further comprising an acid.4. The method of claim 2 , wherein the water-soluble hypochlorite is sodium hypochlorite.54. The method of any one of - claims 1 , wherein the substrate comprises silver claims 1 , copper claims 1 , zinc claims 1 , gold claims 1 , lead claims 1 , or a combination thereof.65. The method of any one of - further comprising precipitation of the metal from the leachate.76. The method of any one of - claims 1 , wherein the substrate is electric arc furnace dust claims 1 , steel dust claims 1 , foundry dust claims 1 , tailings ...

Method for Concentrating Metals from Scrap Containing Metal

The invention relates to a method for concentrating metals, in particular silver and/or tin and/or lead from scrap containing metal, by treating the material/scrap containing silver and/or tin and/or lead with a sulfonic acid of the formula R—SO—OH in the presence of an oxidizing agent, wherein R can be an organic group or ammonia. 1. A method for the concentration of metals , especially silver and/or tin and/or lead , from metal-containing waste , in that the material/the silver-containing and/or tin-containing and/or lead-containing waste is treated with a sulfonic acid of the formula R—SO—OH in the presence of an oxidising agent , wherein R can be an organic group (e.g. —CH) or —NH.2. A method according to claim 1 , characterized in that the treatment of the metal-containing materials/waste with at least 15% sulfonic acid 1/10% by mass of a 30% hydrogen peroxide solution (calculated on 50% sulfonic acid) leads to the formation of silver sulfonate.3. A method according to claim 2 , characterized in that 15% to 50% of methane sulfonic acid is used as sulfonic acid.4. A method according to one of the to claim 2 , characterized in that the reaction occurs at ambient temperature.5. A method according to claim 4 , characterized in that the reaction time is reduced by increasing the temperature in comparison with the ambient temperature and/or an increase in the oxidising agent concentration.6. A method according to one of the to claim 4 , characterized in that the metal-containing waste contains silver and/or lead and/or tin claim 4 , and the aforementioned metals are treated by a hydrometallurgical method by using a mixture of hydrogen peroxide (HO) and methane sulfonic acid (CH—SO—OH or CHSO) claim 4 , by means of which the metals are dissolved from the metal-containing waste and the metals are subsequently selectively precipitated.7. A method according to one of the to claim 4 , characterized in that in the case of silver-containing waste an obtained silver ...

Process for reducing the amounts of zinc (zn) and lead (pb) in materials containing iron (fe)

The present invention relates to a process for reducing the amounts of zinc and lead in starting materials comprising iron which comprises the steps of: —selectively leaching Zn and Pb comprised in the starting materials by mixing the starting materials with hydrochloric acid and an oxidizing agent comprising at least 5 wt-% of manganese dioxide in one or several reactor(s) at a temperature superior or equal to 35° C. and at a p H comprised between 0.5 and 3.5, —filtrating the mixture obtained in order to separate the solid and the filtrate, —washing the solid with water, the resulting solid comprising mainly Fe, a reduced amount of Zn and Pb compared to the original starting materials, —recovering the filtrate of step b) and the washing water of step c) which comprise chloride, solubilized Zn and Pb in one or several reactor(s), —precipitating solubilized Zn, Pb in the recovered filtrate and the washing water by mixing with a neutralizing agent, —filtrating and washing the solid residues obtained in step e) in order to remove the chloride from the solid residues which comprise at least Pb and Zn. The present invention also refers to the use of the materials obtained after treatment in a in a sinter plant and blast furnace or in all pyrometallurgical furnace which value iron such as electrical arc furnace (EAF), cupola furnace, oxycup furnace, submerged arc furnace (SAF), a plasma furnace, rotary hearth furnace.

Recycling of lead-containing waste

A method for recycling lead-containing waste comprises: (a) dissolving the lead-containing waste in an aqueous solution of a first acid to form a solution of a first lead salt; (b) adding a second acid to the solution of the first lead salt to form a lead-depleted solution and a precipitate of a second lead salt; and (c) converting the precipitate of the second lead salt into leady oxide, wherein the first lead salt has a higher solubility in water than the second lead salt. The method may be used for recycling spent lead-acid battery paste.

Process of Treating End-of-Life Cathode Ray Tubes for Lead and Soluble Silicates Recovery

There is described a process of recycling screen glass resulting from the disposal of cathode tube televisions, with quantitative recovery of lead in the form of sulphide and of silicates of cations other than lead, and subsequently recycling all the materials so recovered. 1. A process of recovering lead and silicates from glasses resulting from cathode tube screen disposal , which comprises the following operations:etching the glass by means of a strongly alkaline compound, thus obtaining an aqueous-based liquid phase;adding a sulphide to the so obtained liquid phase, with the precipitation of lead sulphide;separating the solid lead sulphide from the above liquid phase.2. The process according to claim 1 , wherein said alkaline compound is an alkali metal hydroxide.3. The process according to claim 2 , wherein said compound is chosen from sodium hydroxide and potassium hydroxide.4. The process according to claim 1 , wherein said glass etching operation is conducted by means of an aqueous solution of the alkaline compound at a temperature not higher than 200° C.5. The process according to claim 4 , wherein the process temperature is higher than 100° C.6. The process according to claim 5 , wherein the process temperature is between 150° C. and 180° C.7. The process according to claim 1 , wherein the alkaline compound is employed in the form of an aqueous solution with a weight concentration between 10 and 50%.8. The process according to claim 7 , wherein said concentration is between 15 and 45%.9. The process according to claim 1 , wherein said glass etching operation is conducted by blending the glass with the alkaline compound in solid form claim 1 , heating the so obtained solid mixture at a temperature higher than the melting temperature of the alkaline compound employed claim 1 , and taking again the resulting molten mass with water.10. The process according to claim 1 , wherein in said glass etching operation claim 1 , the lead glass/alkaline compound weight ...

SYSTEMS AND METHODS FOR SELECTIVELY SEPARATING AND SEPARATELY PROCESSING PORTIONS OF LEAD-ACID BATTERIES

The present disclosure relates generally to systems and methods for recycling lead-acid batteries, and more specifically, relates to systems and methods for selectively separating and separately processing portions of lead-acid batteries to improve efficiency and reduce costs. A lead-acid battery processing system includes an imaging system configured to perform imaging of a lead-acid battery and perform image analysis to determine a break point that divides top lead from a remainder of the lead content of the lead-acid battery. The system also includes a battery breaking device configured to break the lead-acid battery at the determined break point and separate the lead-acid battery into a first portion, which includes the top lead, from a second portion, which includes the remainder of the lead content, for separate processing of the first and second portions of the lead-acid battery. 1. A lead-acid battery processing system , comprising:an imaging system configured to perform imaging of a lead-acid battery and perform image analysis to determine a break point that divides top lead from a remainder of the lead content of the lead-acid battery; anda battery breaking device configured to break the lead-acid battery at the determined break point and separate the lead-acid battery into a first portion, which includes the top lead, from a second portion, which includes the remainder of the lead content, for separate processing of the first and second portions of the lead-acid battery.2. The system of claim 1 , wherein the top lead comprises terminal posts claim 1 , bushings claim 1 , and straps of the lead-acid battery.3. The system of claim 1 , wherein the imaging system is configured to determine the break point such that the break point traverses a plurality of lugs that couple one or more grids to one or more straps of the lead-acid battery.4. The system of claim 3 , wherein the top lead comprises a portion of the plurality of lugs.5. The system of claim 1 , ...

SYSTEMS AND METHODS FOR PRODUCING POTASSIUM SULFATE

Systems and methods for producing potassium sulfate. Such a method involves providing an industrial waste material that includes at least one metal sulfate or a metal product that has been reacted with sulfuric acid to produce metal sulfates, and then reacting the metal sulfate with potassium carbonate to produce a byproduct that contains potassium sulfate. 1. A method of producing potassium sulfate , the method comprising:providing an industrial waste material that includes at least one metal sulfate or a metal product that has been reacted with sulfuric acid to produce at least one metal sulfate; andreacting the metal sulfate with potassium carbonate to produce a byproduct comprising potassium sulfate.2. The method of claim 1 , further comprising separating and/or filtering the byproduct to remove metal carbonates therefrom and produce a filtered liquor.3. The method of claim 2 , further comprising refining the filtered liquor to produce solid potassium sulfate via a crystallization process.4. The method of claim 2 , further comprising performing a reclamation process on the metal carbonates to isolate a metal thereof.5. The method of claim 1 , wherein the metal sulfate comprises lead sulfate.6. The method of claim 5 , wherein the lead sulfate is a constituent of a lead paste obtained from lead batteries.7. The method of claim 1 , wherein the industrial waste material contains the metal sulfate.8. The method of claim 1 , further comprising reacting the industrial waste material with sulfuric acid to produce the metal sulfate.9. The method of claim 1 , wherein the industrial waste material is from a source chosen from the group consisting of metal refinery waste processing claim 1 , mine drainage claim 1 , ore processing claim 1 , copper refining claim 1 , and a lead recovery operation.10. A system for producing potassium sulfate claim 1 , the system comprising:an industrial waste material that includes at least one metal sulfate or a metal product that has been ...

SYSTEMS AND METHODS FOR CLOSED-LOOP RECYCLING OF A LIQUID COMPONENT OF A LEACHING MIXTURE WHEN RECYCLING LEAD FROM SPENT LEAD-ACID BATTERIES

The present disclosure relates generally to systems and methods for recycling lead-acid batteries, and more specifically, relates to purifying and recycling the lead content from lead-acid batteries. A system includes a reactor that receives and mixes a lead-bearing material waste, a carboxylate source, and a recycled liquid component to form a leaching mixture yielding a lead carboxylate precipitate. The system also includes a phase separation device coupled to the reactor, wherein the phase separation device isolates the lead carboxylate precipitate from a liquid component of the leaching mixture. The system further includes a closed-loop liquid recycling system coupled to the phase separation device and to the reactor, wherein the closed-loop liquid recycling system receives the liquid component isolated by the phase separation device and recycles a substantial portion of the received liquid component back to the reactor as the recycled liquid component. 1. A system , comprising:a reactor that receives and mixes lead-bearing material, a carboxylate source, and a recycled liquid component to form a leaching mixture yielding a lead carboxylate precipitate;a phase separation device coupled to the reactor, wherein the phase separation device isolates the lead carboxylate precipitate from a liquid component of the leaching mixture; anda closed-loop liquid recycling system coupled to the phase separation device and to the reactor, wherein the closed-loop liquid recycling system receives the liquid component isolated by the phase separation device and recycles a substantial portion of the received liquid component back to the reactor as the recycled liquid component.2. The system of claim 1 , wherein the closed-loop liquid recycling system comprises a purification device that removes at least one impurity from the received liquid component before recycling.3. The system of claim 2 , wherein the at least one impurity comprises dissolved sulfates.4. The system of claim 2 ...

Systems and Methods for Recovery of Lead from Lead Acid Batteries

Lead is recovered from lead paste of a lead acid battery in a continuous process. The lead paste is contacted with a base to generate a supernatant and a precipitate. The precipitate is separated from the supernatant, and is contacted with an alkane sulfonic acid to generate a mixture of lead ion solution and insoluble lead dioxide. The lead dioxide is reduced with a reducing agent to form lead oxide, and the lead oxide is combined with the lead ion solution to form a combined lead ion solution to so allow a continuous process without lead dioxide accumulation. Lead is recovered from the combined lead ion solution using electrolysis. 1. A method of recovering lead from a lead paste of a lead acid battery , wherein the lead paste comprises lead sulfate , the method comprising:contacting the lead paste with a base to thereby generate a supernatant comprising a soluble sulfate salt and a precipitate comprising an insoluble lead salt;separating the supernatant from the precipitate;contacting the precipitate with alkane sulfonic acid to generate a mixture comprising a lead ion solution and insoluble lead dioxide;contacting the insoluble lead dioxide with a reducing agent to thereby reduce lead dioxide to lead oxide;combining the lead oxide with the lead ion solution to form a combined lead ion solution;applying an electrical potential to a cathode in contact with the combined lead ion solution to thereby continuously form adherent lead on a first portion of the cathode and to generate regenerated alkane sulfonic acid; andremoving adherent lead from a second portion of the cathode while continuously forming adherent lead on the first portion of the cathode.2. The method of claim 1 , wherein the base is added in an amount sufficient to produce the supernatant comprising the soluble sulfate salt and the precipitate comprising the insoluble lead salt without substantial production of plumbate.3. The method of claim 1 , wherein the base comprises at least one of an alkali or ...

METHOD FOR RECYCLING LEAD OXIDE-CONTAINING WASTE MATERIAL

Provided is a method for recycling a lead oxide-containing waste material, comprising: (1) contacting the lead oxide-containing waste material with a desulphurizer under desulphurization reaction conditions, and performing a solid-liquid separation on the mixture after contacting to obtain a filtrate and a filtration residue; (2) performing a conversion reaction on the above-mentioned filtration residue at a temperature of 350-750° C. so as to convert the lead-containing components in the filtration residue into lead oxide; (3) contacting the product obtained from step (2) with an alkaline solution so as to dissolve the PbO therein, and then performing a solid-liquid separation to obtain a PbO-alkaline solution; and (4) crystallizing the PbO-alkaline solution from step (3) to obtain PbO crystals and an alkaline filtrate. The method can reduce the energy consumption. 1. A method for recovering lead oxide from lead oxide-containing wastes , comprising the following steps:(1) controlling a lead oxide-containing waste to contact with a desulfurizing agent under desulphurization reaction conditions, and carrying out solid-liquid separation for the mixture obtained from the contact reaction, to obtain filtrate and filter residue;(2) controlling the filter residue to have a conversion reaction at 350-750° C. temperature, to convert the lead-containing components in the filter residue into lead oxide.2. The method according to claim 1 , further comprising the following steps:(3) controlling the product obtained in step (2) to contact with alkaline solution, to dissolve the PbO in the product, and then carrying out solid-liquid separation to obtain PbO-alkaline solution;(4) controlling the PbO-alkaline solution obtained in step (3) to crystallize, to obtain PbO crystals and alkaline filtrate.3. The method according to claim 2 , wherein the conversion reaction in step (2) is carried out in existence of a promoter for atom-economic reaction claim 2 , which is added in step (1) ...

METHOD FOR DIRECTLY RECOVERING LEAD OXIDE USED FOR A LEAD-ACID BATTERY CATHODE FROM WASTE LEAD PASTE

Provided is a method for directly recovering lead oxide used for a lead-acid battery negative electrode from waste lead paste. The method comprises: (1) contacting waste lead paste with a barium-containing desulphurizer under desulphurization reaction conditions, and performing a solid-liquid separation on the mixture after contacting to obtain a filtrate and a filtration residue; and (2) performing a conversion reaction on the above-mentioned filtration residue at a temperature of 350-750° C. so as to convert the lead-containing components in the filtration residue into lead oxide. In the method, the direct recovery of a lead oxide raw material applicable to a lead-acid battery negative electrode from waste lead paste is achieved by quantitatively replenishing a barium sulphate additive in the process of desulphuration thereby substantially decreasing the recovery cost and energy consumption, and improving the comprehensive utilization of waste lead paste. 1. A method for directly recovering lead oxide for negative electrode of lead-acid battery from waste lead paste , comprising the following steps:(1) controlling waste lead paste to contact with a barium-containing desulfurizing agent under desulphurization reaction conditions, and carrying out solid-liquid separation for the mixture obtained from the contact reaction, to obtain filtrate and filter residue;(2) controlling the filter residue to have a conversion reaction at 350-750C temperature, to convert the lead-containing components in the filter residue into lead oxide.2. The method according to claim 1 , wherein the barium-containing desulfurizing agent is NaOH and/or KOH solution containing soluble barium compound and/or barium sulfate.3. The method according to claim 2 , wherein the concentration of the NaOH and/or KOH solution is 4-23 wt %.4. The method according to claim 2 , wherein based on the total weight of the barium-containing desulfurizing agent claim 2 , the content of the soluble barium compound ...

Systems And Methods For Continuous Alkaline Lead Acid Battery Recycling

Lead is recycled from lead paste of lead acid batteries in a process that employs alkaline desulfurization followed by formation of plumbite that is then electrolytically converted to pure lead. Remaining insoluble lead dioxide is removed from the lead plumbite solution and reduced to produce lead oxide that can be fed back to the recovery system. Sulfate is recovered as sodium sulfate, while the so produced lead oxide can be added to lead paste for recovery. 1. A method of recovering lead from a battery paste comprising lead oxides and lead sulfate , comprising the steps of:contacting the battery paste with an aqueous base to form a lead hydroxide-containing precipitate and a sodium sulfate solution;separating the lead hydroxide-containing precipitate from the sodium sulfate solution;dissolving at least a portion of the lead hydroxide-containing precipitate in a concentrated aqueous base to yield a lead-containing electrolyte and insoluble lead dioxide; andcontinuously forming and removing adherent lead on an electrode that contacts the lead-containing electrolyte.2. The method of wherein the aqueous base is added in an amount sufficient to produce lead hydroxide from lead oxide without substantial production of plumbite.3. The method of further comprising a step of separating the insoluble lead dioxide from the lead-containing electrolyte claim 1 , and reducing the lead dioxide to lead oxide.4. The method of wherein the step of reducing the lead dioxide to lead oxide is performed using sodium sulfite to produce sodium sulfate and lead oxide.5. The method of wherein the produced sodium sulfate and the sodium sulfate solution are electrolyzed to produce sodium hydroxide and sulfuric acid claim 4 , and wherein the lead oxide is combined with the aqueous base.6. The method of wherein the lead hydroxide-containing precipitate is dissolved in the concentrated aqueous base to convert substantially all lead hydroxide to plumbite.7. The method of wherein the step of ...

HYDROMETALLURGICAL ELECTROWINNING OF LEAD FROM SPENT LEAD-ACID BATTERIES

The present disclosure relates generally to recycling lead-acid batteries, and more specifically, relates to purifying and recycling the lead content from lead-acid batteries. A method includes reacting a lead-bearing material with a first carboxylate source to generate a first lead carboxylate. The method includes reacting the first lead carboxylate with a second carboxylate source to generate a second lead carboxylate. The method further includes applying an electrical bias to an aqueous solution of the second lead carboxylate to generate metallic lead. 1. A method , comprising:reacting a lead-bearing material with a first carboxylate source to generate a first lead carboxylate;reacting the first lead carboxylate with a second carboxylate source to generate a second lead carboxylate; andapplying an electrical bias to an aqueous solution of the second lead carboxylate to generate metallic lead.2. The method of claim 1 , wherein the first carboxylate source comprises an acetate and the second carboxylate source comprises a citrate.3. The method of claim 1 , comprising processing spent lead-acid batteries to generate the lead-bearing material claim 1 , wherein the lead bearing material comprises grids claim 1 , posts claim 1 , interconnects claim 1 , plates claim 1 , spines claim 1 , battery paste claim 1 , lead oxides claim 1 , or lead sulfates claim 1 , or combinations thereof claim 1 , extracted from the processed spent lead-acid batteries.4. The method of claim 1 , wherein the first lead carboxylate is generated in a leaching mixture claim 1 , and wherein the generated first lead carboxylate is dissolved in a liquid component of the leaching mixture.5. The method of claim 1 , wherein the second lead carboxylate is generated in a carboxylate exchange mixture that includes the second carboxylate source claim 1 , and wherein the second lead carboxylate precipitates from the carboxylate exchange mixture.6. The method of claim 5 , comprising isolating the second lead ...

INTEGRATED RECOVERY OF METALS FROM COMPLEX SUBSTRATES

Described is a method of recovering a metal from a substrate having a metal sulphide, metal oxide, or combination thereof, by contacting the substrate with an aqueous oxidant to oxidize the metal sulphide to elemental sulphur and oxidized metal or convert the complex metal oxide to a metal salt, contacting the oxidized metal or simple metal oxide with ammonium hydroxide to form soluble a ammine complex of the metal to obtain a leachate and residual solids; separating the leachate from the residual solids; and recovering the metal. 1. A method for recovering a metal from a substrate comprising a metal sulphide , or a combination of the metal sulphide and a metal oxide , the method comprising:a) contacting the substrate with an aqueous oxidant to oxidize the metal sulphide to elemental sulphur and oxidized metal and to convert the metal oxide, if present, to a metal salt;b) contacting the oxidized metal and metal salt, if present, with ammonium hydroxide to form a soluble metal ammine complex to obtain a leachate and residual solids;c) separating the leachate from the residual solids; andd) recovering the metal from one or more of the leachate and the residual solids.2. The method of claim 1 , wherein the aqueous oxidant is selected from the group consisting of a water-soluble peroxide claim 1 , a water-soluble perchlorate claim 1 , a water-soluble hypochlorite and ferric iron.3. The method of claim 2 , wherein the aqueous oxidant is ferric iron claim 2 , optionally further comprising an acid.4. The method of claim 2 , wherein the water-soluble hypochlorite is sodium hypochlorite.5. The method of claim 1 , further comprising one or more of the following characteristics:(a) the substrate comprises silver, copper, zinc, gold, lead, or a combination thereof;(b) the method further comprises precipitation of the metal from the leachate;(c) the substrate is electric arc furnace dust, steel dust, foundry dust, tailings, crushed ore, mine sludge, or a combination thereof;(d) ...

RECOVERY OF METALS

A method for recovering metal from electronic waste contacting electronic waste with a recovery solution to dissolve metals from the electronic waste into the recovery solution, wherein the recovery solution comprises nitric acid and ferric nitrate; and raising the pH of the recovery solution to precipitate at least some of said metals therefrom. 1. A method for recovering metal from electronic waste , the method comprising;contacting electronic waste with a recovery solution to dissolve metals from the electronic waste into the recovery solution, wherein the recovery solution comprises nitric acid and ferric nitrate; andraising the pH of the recovery solution to precipitate at least some of said metals therefrom.2. The method of claim 1 , wherein the recovery solution comprises from 0.5 to 12 wt % ferric nitrate.3. The method of claim 1 , wherein the recovery solution comprises from 10 to 60 wt % nitric acid claim 1 , preferably from 15 to 40 wt %.4. The method of claim 1 , wherein the recovery solution comprises chloride ions.5. The method of claim 1 , wherein the recovery solution further comprises sulphamate ions.6. The method of claim 1 , wherein the recovery solution further comprises a copper corrosion inhibitor.7. The method of claim 1 , further comprising subjecting the recovery solution and electronic waste to agitation with an oxygen-containing gas.8. The method according to claim 1 , wherein the electronic waste is immersed for at least 30 minutes in the recovery solution.9. The method of claim 1 , further comprising adding chloride ions to the recovery solution prior to raising the pH.10. The method of claim 1 , wherein the raising the pH of the recovery solution comprises raising the pH to from 3 to 6.12. The method of claim 1 , wherein contacting the electronic waste with the recovery solution is carried out in a revolving drum.13. The method of claim 1 , further comprising continuous filtration of the recovery solution.14. The method of claim 1 , ...

PROCESS FOR THE DESULPHURIZATION OF MATERIALS AND/OR RESIDUES CONTAINING LEAD SULPHATE EMPLOYING AN AMINO COMPOUND

The present invention claims a process for the desulphurization of materials and/or residues containing lead sulphate, carried out in one or more stages. The main characteristic of this process is that the only desulphurising agent is an amino compound selected among urea, guanidine, guanine, arginine or another similar amino compound. 1. A process for the desulphurization of materials and/or residues containing lead sulphate , carried out in one or more stages , wherein the only desulphurising agent is an amino compound selected among urea , guanidine , guanine or arginine.2. The process according to claim 1 , where the amino compound is urea.3. The process according to claim 1 , where the process occurs in a single stage in a closed reactor where the amino compound in an aqueous solution between 20% and 50% m/v claim 1 , reacts directly with the material that has to be desulphurised with the following operational conditions:temperature between 50 and 190° C.;pressure between 1 and 12 atmospheres (atm);reaction time between 5 and 120 minutes (min); andliquid/solid ratio m/m between 0.5 and 4.4. The process according to claim 3 , where operational conditions are:temperature between 90 and 190° C.,pressure between 2 and 12 atm;reaction time between 10 and 100 min; andliquid/solid ratio between 1 and 4.5. The process according to claim 1 , where the process is carried out in more stages where the amino compound claim 1 , before reacting with the material that has to be desulphurised claim 1 , is activated through a distillation or a flash.6. The process according to claim 5 , where the activated amino compound is mixed with one or more other amino compounds claim 5 , the resulting mixture of the above mentioned amino compounds being activated through a distillation or a flash before its reaction with the material to be desulphurised.7. The process according to claim 5 , where the amino compound claim 5 , or the mixture of the amino compounds claim 5 , is activated ...

PROCESS FOR THE SELECTIVE RECOVERY OF LEAD AND SILVER

The present invention relates to a process for the selective and ecoefficient recovery of lead and silver jointly as a concentrate product from hydrometallurgical residues. 1. A process for the selective recovery of lead and silver , the process comprising the steps of:a) subjecting a hydrometallurgical residue comprising at least lead and silver to an oxidative leaching in the presence of a chloride brine solution and an oxidizing agent, thus selectively solubilizing lead and silver as chloride soluble compounds;b) reacting the pregnant leaching solution obtained in step a) with a carbonate compound which acts as a precipitating agent, thus jointly precipitating lead and silver as carbonate concentrates;and 'so as a lead and silver carbonate concentrate having a chloride content between 0.01 and 0.5 wt % on a dry weight basis is obtained.', 'c) purifying the concentrate obtained in step b) by contacting said concentrate with a carbonate compound solution,'}2. The process according to claim 1 , wherein the hydrometallurgical residue of step a) is a residue with a lead content between 10 and 40% weight with respect to the total residue dry weight and a silver content between 50 and 5000 ppm with respect to the total residue weight.3. The process according to claim 1 , wherein the chloride brine of step a) is sodium chloride brine.4. The process according to claim 1 , wherein the oxidizing agent of step a) is sodium hypochlorite.5. The process according to claim 1 , wherein the step a) is operated at Ag/AgCl redox potential between 100 and 350 mV.6. The process according to claim 1 , wherein the step a) is operated at a pH between 0.5 and 4.7. The process according to claim 1 , wherein the precipitating agent of step b) is sodium carbonate.8. The process according to claim 1 , wherein step b) is conducted by adding the pregnant leaching solution obtained in step a) and a solution containing the carbonate compound to a buffered solution.9. The process according to ...

SYSTEMS AND METHODS FOR CLOSED-LOOP RECYCLING OF A LIQUID COMPONENT OF A LEACHING MIXTURE WHEN RECYCLING LEAD FROM SPENT LEAD-ACID BATTERIES

The present disclosure relates generally to systems and methods for recycling lead-acid batteries, and more specifically, relates to purifying and recycling the lead content from lead-acid batteries. A system includes a reactor that receives and mixes a lead-beating material waste, a carboxylate source, and a recycled liquid component to form a leaching mixture yielding a lead carboxylate precipitate. The system also includes a phase separation device coupled to the reactor, wherein the phase separation device isolates the lead carboxylate precipitate from a liquid component of the leaching mixture. The system further includes a closed-loop liquid recycling system coupled to the phase separation device and to the reactor, wherein the closed-loop liquid recycling, system receives the liquid component isolated by the phase separation device and recycles a substantial portion of the received liquid component back to the reactor as the recycled liquid component. 123-. (canceled)24. A system , comprising:a reactor that receives and mixes lead-bearing material, a carboxylate source, and a recycled liquid component to form a leaching mixture yielding a lead carboxylate precipitate;a phase separation device coupled to the reactor, wherein the phase separation device isolates the lead carboxylate precipitate from a liquid component of the leaching mixture;a calciner coupled to the phase separation device and configured to receive the lead carboxylate precipitate isolated by the phase separation device and treat the lead carboxylate precipitate to yield leady oxide; anda closed-loop liquid recycling system coupled to the phase separation device and to the reactor, wherein the closed-loop liquid recycling system receives the liquid component isolated by the phase separation device and recycles a substantial portion of the received liquid component back to the reactor as the recycled liquid component.25. The system of claim 24 , wherein the closed-loop liquid recycling system ...

SYSTEMS AND METHODS FOR CLOSED-LOOP RECYCLING OF A LIQUID COMPONENT OF A LEACHING MIXTURE WHEN RECYCLING LEAD FROM SPENT LEAD-ACID BATTERIES

The present disclosure relates generally to systems and methods for recycling lead-acid batteries, and more specifically, relates to purifying and recycling the lead content from lead-acid batteries. A system includes a reactor that receives and mixes a lead-bearing material waste, a carboxylate source, and a recycled liquid component to form a leaching mixture yielding a lead carboxylate precipitate. The system also includes a phase separation device coupled to the reactor, wherein the phase separation device isolates the lead carboxylate precipitate from a liquid component of the leaching mixture. The system further includes a closed-loop liquid recycling system coupled to the phase separation device and to the reactor, wherein the closed-loop liquid recycling system receives the liquid component isolated by the phase separation device and recycles a substantial portion of the received liquid component back to the reactor as the recycled liquid component. 1. A system , comprising:a reactor that receives and mixes lead-bearing material, a carboxylate source, and a recycled liquid component to form a leaching mixture yielding a lead carboxylate precipitate;a phase separation device coupled to the reactor, wherein the phase separation device isolates the lead carboxylate precipitate from a liquid component of the leaching mixture; anda closed-loop liquid recycling system coupled to the phase separation device and to the reactor, wherein the closed-loop liquid recycling system receives the liquid component isolated by the phase separation device and recycles a substantial portion of the received liquid component back to the reactor as the recycled liquid component.2. The system of claim 1 , wherein the closed-loop liquid recycling system comprises a purification device that removes at least one impurity from the received liquid component before recycling.3. The system of claim 2 , wherein the at least one impurity comprises dissolved sulfates.4. The system of claim 2 ...

METHOD FOR RECOVERING LEAD OXIDE FROM WASTE LEAD PASTE

A method for recovering lead oxide from a pre-desalted lead paste, comprising the following steps: a. dissolving the pre-desalted lead plaster by using a complexing agent solution, and making all of PbO therein react with the complexing agent to generate lead complexing ions, obtaining a lead-containing solution and a filter residue; b. adding a precipitant to the lead-containing solution, and then the precipitant reacting with the lead complexing ions to generate a lead salt precipitate and the regenerated complexing agent; c. calcining the lead salt precipitate to obtain lead oxide and regenerate the precipitant. The final recovery rate of lead oxide of the method can reach 99% or more.

Hydrothermal process for the treatment of lead glass with recovery of lead metal, soluble and insoluble silicates and silica

There is described a process completely performed in aqueous phase, which provides a heat etching of lead glass with aqueous solutions of strong alkali followed by an electrolytic treatment of the suspension so obtained, in order to recover metallic lead and obtain soluble silicates, separated from insoluble silicates, both lead-free. The process also provides for the production of pure silica, derived from the soluble silicates, and a possible use thereof to increase the ratio between silica and sodium oxide, which characterizes the specifications of the soluble silicates. The electrolysis for the recovery of metallic lead is implemented in a cell in which the polarity of the electrodes is periodically reversed, to obtain the detachment of the metallic lead deposited on the cathodes. 1. A very low environmental impact process that for recovering lead in form of metal , soluble and insoluble silicates , silica , and soluble silicates with higher silica/sodium oxide ratio , from lead glass resulting from cathode ray tube TV sets disposal , the process including the following operations:a) heat etching of the ground glass with a very strongly alkaline aqueous solution to obtain a suspension consisting of a liquid phase including soluble silicates, sodium plumbite and soluble lead silicate, and a solid insoluble phase consisting of silicates of all polyvalent cations and part of the lead originally present in the lead glass;b) treating the liquid phase of the suspension in an electrolytic cell to recover the lead in the form of metal and to obtain a solution of soluble silicates and the insoluble silicates in solid state without lead;c) possible treatment of the soluble silicate with an acid to form insoluble silica; andd) reaction of the silica with the silicates to increase the silica/oxide ratio.2. Process according to claim 1 , wherein the alkaline solution consists of an aqueous solution of sodium hydroxide or potassium hydroxide.3. Process according to claim 1 , ...

PROCESS FOR THE TREATMENT OF END-OF-LIFE CATHODE-RAY TUBES

A process for recycling glass from screens deriving from the disposal of cathode-ray tube television sets with quantitative recovery of the lead in metal form, is described. 1. A process for the recovery of lead and silicates from a glass derived from dismantling a cathode-ray tube screen , the process comprising:grinding the glass to obtain a powder having a grain size between 1 mm and 200 μm;{'sup': '2+', 'attacking the glass with a strongly alkaline solution at a temperature of at least 180° C. to obtain a first suspension comprising a water-based liquid phase containing soluble silicates and lead in the form of the ion Pb, and a particulate of insoluble silicates;'}filtrating the first suspension to separate the liquid phase from the particulate;{'sup': '2+', 'treating said liquid phase in an electrochemical cell with a deposit of metallic lead onto the cathode and extraction from the electrochemical cell of a first solution containing soluble silicates and between 0.07 and 0.12% by weight of Pb ion;'}uniting a first part of said first solution with the insoluble silicates particulate separated during the filtrating step and recirculating the obtained mixture in the filtrating step;{'sup': '2+', 'titrating the second part of said first solution to determine the concentration of Pb ion;'}{'sup': 2+', '2+, 'treatment of said second part of the first solution with metallic zinc for the reduction of Pb to metallic lead to obtain a second solution containing less than 50 ppm of Pb ion;'}filtering said second solution to extract the metallic lead from said second solution.2. The process according to claim 1 , wherein the attacking the glass with the strongly alkaline solution is carried out at a temperature between 180 and 240° C. with an aqueous solution of a hydroxide of an alkali metal in a concentration of between 30 and 50% by weight.3. The process according to wherein claim 2 , when the hydroxide employed is sodium hydroxide claim 2 , the weight ratio between ...

A Method of Pretreatment and Bromine Recovery of PCB Incineration Ash

A method of pretreatment and bromine recovery of PCB Incineration ash is disclosed that relates to the field of comprehensive recovery of valuable metals by full wet method, especially relates to a method of valuable metals and bromine recovery, precious metals enrichment in pretreatment process of PCB Incineration ash. The major steps includes alkali leaching, Cu extraction back-extraction, neutralization-precipitation to separate, Bromine evaporative crystallization, regeneration, acid pickling, Zn evaporative crystallization, removal of Zn and Cu. Compared with the traditional comprehensive recovery process of ash, the invention can separate bromine from ash and recover valuable metals such as copper, zinc and lead with the maximum extent, at the same time, the enrichment of silver and other precious metals is beneficial to the subsequent recovery of precious metals. It has high added recovery value and no tailless discharge. 1. A method of pretreatment and Bromine recovery of printed circuit board Incineration ash , comprising the steps of: [{'sup': '3', 'treating the printed circuit board Incineration ash with an alkali leaching solution for 1 to 2 hours, wherein the alkali leaching solution is made of a mixture of sodium hydroxide and ammonia, wherein the concentration of sodium hydroxide is 5˜20% by mass, and the concentration of ammonia is 5˜20% by mass, the solid-liquid ratio of ash to the leaching solution is 1:5˜1:10 Kg/L, the leaching temperature is 35˜55° C., meanwhile keep blowing air with agitation, wherein the blast air volume per cubic meter leaching solution is 0.01˜0.1 m/min;'}, 'stopping blowing the air and continue agitating, adding 1˜3 g copper powder into every liter of the leaching solution;', 'carrying out the reaction for 10˜30 minutes; and', 'performing filtration to obtain a mixed alkali leaching slag and a mixed alkali leaching solution;, '(1) alkali leaching, further comprising the steps of extracting copper from the mixed alkali ...

HYDROMETALLURGICAL METHOD FOR RECYCLING LEAD FROM SPENT LEAD-ACID BATTERY PASTE

A method for recycling lead from spent lead-acid battery paste, relating to the technical field of hydrometallurgy. In the method, firstly a reducing agent, and a lead paste are added into a zinc chloride solution for leaching in a stirring mill to cause lead in the lead paste to enter the solution, a lead cementation is performed by using zinc in the leached solution, after the lead cementation, the electrolytic zinc is produced by controlling an electrodeposition on the zinc chloride solution for a short time, the reducing agent is zinc, lead or hydrogen peroxide, a part of the electrolytic zinc is returned as the reducing agent for leaching, the step of returning the electrolytic zinc as the reducing agent can be omitted when the lead or the hydrogen peroxide is used as the reducing agent. 1. A hydrometallurgical method for recycling lead from a spent lead-acid battery paste , comprising the following steps:(1) leaching a lead paste by using zinc, lead or hydrogen peroxide as a reducing agent, and a zinc chloride solution as a leaching agent; after the leaching is completed, obtaining a leaching residue and a leached solution by a liquid-solid separation;(2) adding zinc to the leached solution obtained in the step (1) for a lead cementation to obtain the lead and a solution;(3) performing an electrodeposition on the solution obtained in the step (2) for a short time to obtain an electrolytic zinc and an electrodeposited solution;(4) using the electrolytic zinc obtained in the step (3) as a cementation reagent to return to the step (2) for the lead cementation;(5) adding calcium chloride to the electrodeposited solution obtained in the step (3) to remove a sulfate ion in the solution and obtain calcium sulfate and a purified solution;(6) using the purified solution obtained in the step (5) as the leaching agent to return to the step (1).2. The method for recycling the lead from the spent lead-acid battery paste according to claim 1 , wherein the lead paste treated ...

RECOVERY OF VALUABLE OR TOXIC METALS FROM SILICON SOLAR CELLS

Exemplary methods provide for recovery of valuable industrial metals in connection with recycling of silicon solar cells and modules. Silicon, copper, silver, and the like may be recovered separately, allowing for cost-effective recycling for silicon solar cells and modules. 1. A method for recycling materials from a silicon solar cell , the method comprising:chemical dissolution of at least one of silver, lead, tin, and copper from the silicon solar cell to form a metal-bearing solution;extraction of tin from the metal-bearing solution via sedimentation;extraction of at least one of silver, lead, and copper from the metal-bearing solution; andrecovery of solar-grade silicon from the silicon solar cell.2. The method of claim 1 , further comprising a step of treatment of waste chemicals produced during one or more of the chemical dissolution claim 1 , extraction claim 1 , or recovery.3. The method of claim 1 , wherein the step of extraction of at least one of silver claim 1 , lead claim 1 , and copper is performed via sequential electrowinning.4. The method of claim 3 , wherein the sequential electrowinning comprises:placing the metal-bearing solution in a three-electrode cell utilizing a first working electrode, a counter electrode, and a reference electrode, wherein the first working electrode comprises silver;applying a voltage between 0.3419 V and 0.7996 V versus standard hydrogen electrode to the first working electrode to deposit silver on the first working electrode;removing the first working electrode from the metal-bearing solution and inserting a second working electrode into the metal-bearing solution, wherein the second working electrode comprises copper;applying a voltage between −0.1262 V and 0.3419 V versus standard hydrogen electrode to the second working electrode to deposit copper on the second working electrode;removing the second working electrode from the metal-bearing solution and inserting a third working electrode into the metal-bearing ...

ZERO LEAD POLLUTION PROCESS FOR RECYCLING USED LEAD ACID BATTERIES

Described herein is a process for recycling of used lead-acid batteries. In an embodiment, the process includes contacting crushed non-metallic components with a reducing mixture comprising a nitric acid solution to reduce at least a portion of residual lead compounds and alloys. The lead in the portion of residual lead compounds and alloys is reduced from an insoluble +4 state to a soluble +2 state to form a slurry with a lead-rich filtrate. The process further includes filtering the slurry to separate plastics and separators from the lead-rich filtrate and contacting the lead-rich filtrate with sulfuric acid to obtain a lead sulfate paste and nitric acid. The process further includes processing the metal containing components to form a paste comprising sulfates of lead and other metals present in the metal containing components, contacting the lead sulfate paste and the paste comprising sulfates of lead and other metals with alkali to form a precipitate comprising oxides of lead, and contacting the precipitate comprising oxides of lead with a carboxylic acid to form soluble lead carboxylates. Soluble lead carboxylates are then processed to obtain lead monoxide. 1. A process for recovering lead oxide from a component of a lead-acid battery , the process comprising:contacting a component of the lead-acid battery with a mixture comprising a nitric acid solution to reduce at least a portion of residual lead compounds and alloys comprising the component, wherein lead in the said portion of residual lead compounds and alloys is reduced from an insoluble +4 state to a soluble +2 state to form a slurry with a lead-rich filtrate;filtering the slurry to separate plastics and separators comprising the component from the lead-rich filtrate; andcontacting the lead-rich filtrate with sulfuric acid to obtain a lead sulfate paste and nitric acid.2. The process of claim 1 , further comprising processing the lead sulfate paste to obtain lead oxide.3. The process of claim 1 , ...

Systems And Methods For Continuous Alkaline Lead Acid Battery Recycling

Lead is recycled from lead paste of lead acid batteries in a process that employs alkaline desulfurization followed by formation of plumbite that is then electrolytically converted to pure lead. Remaining insoluble lead dioxide is removed from the lead plumbite solution and reduced to produce lead oxide that can be fed back to the recovery system. Sulfate is recovered as sodium sulfate, while the so produced lead oxide can be added to lead paste for recovery. 1. A method of continuously recovering lead from a battery paste comprising lead oxides and lead sulfate , comprising the steps of:contacting the battery paste with a reducing agent to reduce lead dioxide to in the battery paste to lead oxide;desulfating the battery paste with an aqueous base to form a lead hydroxide-containing precipitate and a soluble sulfate;separating the lead hydroxide-containing precipitate from the soluble sulfate;dissolving at least a portion of the lead hydroxide-containing precipitate in a concentrated aqueous base having a pH sufficient to form soluble plumbite to thereby yield a lead-containing electrolyte; andcontinuously forming and removing micro- or nanocrystalline lead at the pH on a moving electrode that contacts the lead-containing electrolyte.2. The method of wherein the aqueous base is added in an amount sufficient to produce lead hydroxide from lead oxide without substantial production of plumbite.3. The method of wherein the reducing agent is hydrogen peroxide or a sulfur-containing reducing agent.4. The method of wherein the step of reducing the lead dioxide to lead oxide is performed using sodium sulfite to produce sodium sulfate and lead oxide.5. The method of wherein the produced sodium sulfate and the sodium sulfate solution are electrolyzed to produce sodium hydroxide and sulfuric acid claim 4 , and wherein the lead oxide is combined with the aqueous base.6. The method of wherein the lead hydroxide-containing precipitate is dissolved in the concentrated aqueous base ...

METHODS FOR PURIFYING AND RECYCLING LEAD FROM SPENT LEAD-ACID BATTERIES

The present disclosure relates to methods by which lead from spent lead-acid batteries may be extracted, purified, and used in the construction of new lead-acid batteries. A method includes: (A) forming a mixture including a carboxylate source and a lead-bearing material; (B) generating a first lead salt precipitate in the mixture as the carboxylate source reacts with the lead-bearing material; (C) increasing the pH of the mixture to dissolve the first lead salt precipitate; (D) isolating a liquid component of the mixture from one or more insoluble components of the mixture; (E) decreasing the pH of the liquid component of the mixture to generate a second lead salt precipitate; and (F) isolating the second lead salt precipitate from the liquid component of the mixture. Thereafter, the isolated lead salt precipitate may be converted to leady oxide for use in the manufacture of new lead-acid batteries. 1. A method , comprising:reacting one or more impurities of a lead salt solution with at least one compound to evolve one or more impurity gases that are released from the lead salt solution, wherein the one or more impurities comprise an element or compound of Group 14, an element or compound of Group 15, an element or compound of Group 16, an element or compound of Group 17, or a combination thereof.2. The method of claim 1 , wherein the one or more impurities comprise tellurium claim 1 , antimony claim 1 , tin claim 1 , selenium claim 1 , arsenic claim 1 , germanium claim 1 , silicon claim 1 , phosphorus claim 1 , sulfur claim 1 , or a combination thereof.3. The method of claim 1 , wherein the at least one compound comprises sodium tetraborohydride.4. The method of claim 1 , wherein the at least one compound comprises sodium hydride.5. The method of claim 1 , wherein the at least one compound comprises hydrogen gas.6. The method of claim 1 , wherein the at least one compound comprises syngas.7. The method of claim 1 , wherein the at least one compound is a reducing ...

SYSTEMS AND METHODS FOR PURIFYING AND RECYCLING LEAD FROM SPENT LEAD-ACID BATTERIES

The present disclosure relates to systems and methods by which lead from spent lead-acid batteries may be extracted, purified, and used in the production of new lead-acid batteries. The system includes a first phase separation device configured to: receive the first mixture from the basic lead stream digestion device, isolate a liquid component from one or more insoluble components of the first mixture, and output the liquid component. The system also includes a lead salt precipitation device configured to: receive and mix the liquid component and a carboxylate source to form a second mixture including a lead salt precipitate, and output the second mixture. The system further includes a second phase separation device configured to: receive the second mixture from the lead salt precipitation device, isolate the liquid component from the lead salt precipitate of the second mixture, and output the lead salt precipitate. 1. A system , comprising:a basic lead stream digestion device configured to: receive and mix a hydroxide and a lead-bearing material to form a first mixture, and output the first mixture;a first phase separation device configured to: receive the first mixture from the basic lead stream digestion device, isolate a liquid component from one or more insoluble components of the first mixture, and output the liquid component;a lead salt precipitation device configured to: receive and mix the liquid component and a carboxylate source to form a second mixture comprising a lead salt precipitate, and output the second mixture; anda second phase separation device configured to: receive the second mixture from the lead salt precipitation device, isolate the liquid component from the lead salt precipitate of the second mixture, and output the lead salt precipitate.2. The system of claim 1 , comprising a lead-acid battery processing device configured to: receive at least one lead-acid battery claim 1 , grind the at least one lead-acid battery into the lead-bearing ...

ENERGY EFFICIENT SALT-FREE RECOVERY OF METAL FROM DROSS

A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with good capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to burn non-recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue. When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt; in addition, the non-use of fluxing salt for the treatment means that the non-contaminated residue can be used as a cover for the electrolytic cells in the case of aluminum. In the case of zinc dross, the residue is a valuable zinc oxide by-product very low in contaminants. 131.-. (canceled)32. A process for treating dross containing a recoverable metal , in order to recover said metal , comprising:(a) charging a batch of dross into a furnace containing a filling material preheated to a sufficient temperature to insure that said dross is thereby heated above the melting point of the metal to be recovered by transfer of energy stored in the filling material;(b) providing an inert atmosphere in the furnace by filling the furnace with inert gas, to prevent oxidation of the dross during the process;(c) rotating or oscillating the dross within the furnace to ensure proper transfer of heat between the filling material and the dross and heating of the dross to a temperature above the melting point of the recoverable metal, a separation thereof from the dross residue and from ...

METHODS FOR PURIFYING AND RECYCLING LEAD FROM SPENT LEAD-ACID BATTERIES

The present disclosure relates to methods by which lead from spent lead-acid batteries may be extracted, purified, and used in the construction of new lead-acid batteries. A method includes: (A) forming a mixture including a carboxylate source and a lead-bearing material; (B) generating a first lead salt precipitate in the mixture as the carboxylate source reacts with the lead-bearing material; (C) increasing the pH of the mixture to dissolve the first lead salt precipitate; (D) isolating a liquid component of the mixture from one or more insoluble components of the mixture; (E) decreasing the pH of the liquid component of the mixture to generate a second lead salt precipitate; and (F) isolating the second lead salt precipitate from the liquid component of the mixture. Thereafter, the isolated lead salt precipitate may be converted to leady oxide for use in the manufacture of new lead-acid batteries. 1. A method , comprising:(A) forming a mixture comprising a carboxylate source and a lead-bearing material;(B) generating a first lead salt precipitate in the mixture as the carboxylate source reacts with the lead-bearing material;(C) increasing the pH of the mixture to dissolve the first lead salt precipitate;(D) isolating a liquid component of the mixture from one or more insoluble components of the mixture;(E) decreasing the pH of the liquid component of the mixture to generate a second lead salt precipitate; and(F) isolating the second lead salt precipitate from the liquid component of the mixture.2. The method of claim 1 , comprising treating the isolated second lead salt precipitate using calcination or a base treatment to yield leady oxide.3. The method of claim 2 , wherein the leady oxide comprises between approximately 0% and approximately 35% free lead.4. The method of claim 2 , wherein the leady oxide comprises leady oxide particles having a Dbetween approximately 0.2 nm and approximately 20 nm.5. The method of claim 2 , wherein the leady oxide has a Brunauer ...

SYSTEMS AND METHODS FOR CLOSED-LOOP RECYCLING OF A LIQUID COMPONENT OF A LEACHING MIXTURE WHEN RECYCLING LEAD FROM SPENT LEAD-ACID BATTERIES

The present disclosure relates generally to systems and methods for recycling lead-acid batteries, and more specifically, relates to purifying and recycling the lead content from lead-acid batteries. A system includes a reactor that receives and mixes a lead-bearing material waste, a carboxylate source, and a recycled liquid component to form a leaching mixture yielding a lead salt precipitate. The system also includes a phase separation device coupled to the reactor, wherein the phase separation device isolates the lead salt precipitate from a liquid component of the leaching mixture. The system further includes a closed-loop liquid recycling system coupled to the phase separation device and to the reactor, wherein the closed-loop liquid recycling system receives the liquid component isolated by the phase separation device and recycles a substantial portion of the received liquid component back to the reactor as the recycled liquid component. 1. A system , comprising:a reactor that receives and mixes lead-bearing material, a carboxylate source, and a recycled liquid component to form a leaching mixture yielding a lead salt precipitate;a phase separation device coupled to the reactor, wherein the phase separation device isolates the lead salt precipitate from a liquid component of the leaching mixture; anda closed-loop liquid recycling system coupled to the phase separation device and to the reactor, wherein the closed-loop liquid recycling system receives the liquid component isolated by the phase separation device and recycles a substantial portion of the received liquid component back to the reactor as the recycled liquid component.2. The system of claim 1 , wherein the closed-loop liquid recycling system comprises a purification device that removes at least one impurity from the received liquid component before recycling.3. The system of claim 2 , wherein the at least one impurity comprises dissolved sulfates.4. The system of claim 2 , wherein the at least one ...

SYSTEMS AND METHODS FOR ISOLATING A PARTICULATE PRODUCT WHEN RECYCLING LEAD FROM SPENT LEAD-ACID BATTERIES

The present disclosure relates to systems and methods by which lead from spent lead-acid batteries may be extracted, purified, and used in the construction of new lead-acid batteries. A method includes forming a first mixture in a first vessel, wherein the first mixture includes a lead-bearing material and a carboxylate source, which react to precipitate lead salt particles. The method includes separating a portion of the first mixture from a remainder of the first mixture, wherein the portion includes lead salt particles having specific densities below a specific density threshold value and/or having particle sizes below a particle size threshold value. The method includes forming a second mixture in a second vessel, wherein the second mixture includes the lead salt particles from the separated portion of the first mixture. The method further includes separating the lead salt particles of the second mixture from a liquid component of the second mixture. 1. A system , comprising:a leaching vessel that receives and mixes a lead-bearing material and a carboxylate source to form a leaching mixture yielding lead salt particles as a product;a first separation device coupled to the leaching vessel, wherein the first separation device separates a substantial portion of the lead salt particles from the leaching mixture, wherein the lead salt particles have specific densities below a specific density threshold value, particles sizes below a particle size threshold value, or both;a growth vessel coupled to the first separation device, wherein the growth vessel receives the lead salt particles from the first separation device and forms a growth mixture that includes the lead salt particles; anda second separation device coupled to the growth vessel, wherein the second separation device isolates the lead salt particles from a liquid component of the growth mixture.2. The system of claim 1 , wherein the specific density threshold value is less than 6 grams per milliliter (g/mL). ...

SYSTEMS AND METHODS FOR THE HYDROMETALLURGICAL RECOVERY OF LEAD FROM SPENT LEAD-ACID BATTERIES AND THE PREPARATION OF LEAD OXIDE FOR USE IN NEW LEAD-ACID BATTERIES

The present disclosure relates generally to recycling lead-acid batteries, and more specifically, relates to purifying and recycling the lead content from lead-acid batteries. A lead recovery system includes a first reactor configured to receive and mix a lead-bearing material and a first carboxylate source to yield a first mixture, wherein the first mixture includes a first lead carboxylate that is dissolved in a liquid component of the first mixture. The system includes a second reactor configured to receive and mix the liquid component of the first mixture and a second carboxylate source to yield a second mixture, wherein the second mixture includes solid particles of a second lead carboxylate. The system includes a third reactor configured to receive and mix the solid particles of the second lead carboxylate and a hydroxide solution to yield a third mixture, wherein the third mixture includes solid particles of lead oxide. 1. A lead recovery system , comprising:a first reactor configured to receive and mix a lead-bearing material and a first carboxylate source to yield a first mixture, wherein the first mixture includes a first lead carboxylate that is dissolved in a liquid component of the first mixture;a second reactor configured to receive and mix the liquid component of the first mixture and a second carboxylate source to yield a second mixture, wherein the second mixture includes solid particles of a second lead carboxylate; anda third reactor configured to receive and mix the solid particles of the second lead carboxylate and a hydroxide solution to yield a third mixture, wherein the third mixture includes solid particles of lead oxide.2. The lead recovery system of claim 1 , wherein the first carboxylate source comprises an acetate and the second carboxylate source comprises a citrate.3. The lead recovery system of claim 1 , comprising a lead-acid battery processing device that is configured to receive at least one lead-acid battery and grind the at least ...

A METHOD OF RECOVERING BROMIDE FROM BROMINE-CONTAINING SMELTING ASH

A method of recovering bromide from bromine-containing smelting ash relates to the field of high efficient separation and recovery of bromine by total wet method. It especially relates to the method of high efficiency separation of bromine salt and lead, zinc recovery of circuit board smelting ash by two-step method. It mainly comprising: sub-molten salt leaching, washing, separate Lead and zinc by adjusting the pH of industrial sulfuric acid, membrane separation and concentration, reuse of water, crude bromine salt recovery by evaporation crystallization of bromine salt. Compared with the traditional baking and recycling process of ash, the invention adopts sodium hydroxide submolten salt leaching technology and membrane separation and concentration technology, to reduce the reaction temperature and tailings discharge greatly, which has a good effect of energy saving and emission reduction. 1. A method of recovering bromide from bromine-containing smelting ash comprising:(1) leaching by sub-molten salt method: smelting ash containing bromine and sodium hydroxide is leached by sub-molten salt method in a sodium hydroxide system, leaching liquid and residue are obtained;(2) washing: wash the leaching residue obtained in step (1), a solid-to-liquid ratio of leaching residue:water is 1:5 to 1:10 Kg/L, water is at room temperature, washing liquid and washing residue are obtained, the washing residue is collected and treated;(3) separation of lead and zinc: merge the leaching liquid obtained in step (1) with the washing liquid obtained in step (2) to obtain a mixture, a volume ratio of leaching liquid:washing liquid is 1:3 to 3:1, add 98% industrial concentrated sulfuric acid to the mixture until the pH of the mixture reaches 6.5-8, lead-zinc separation residue and lead-zinc separation liquid are obtained;(4) membrane separation concentration: the lead-zinc separation liquid obtained in step (3) is separated and concentrated by reverse osmosis membrane to obtain ...

METHODS FOR PURIFYING AND RECYCLING LEAD FROM SPENT LEAD-ACID BATTERIES

The present disclosure relates to methods by which lead from spent lead-acid batteries may be extracted, purified, and used in the construction of new lead-acid batteries. A method includes: (A) forming a mixture including a carboxylate source and a lead-bearing material; (B) generating a first lead salt precipitate in the mixture as the carboxylate source reacts with the lead-bearing material; (C) increasing the pH of the mixture to dissolve the first lead salt precipitate; (D) isolating a liquid component of the mixture from one or more insoluble components of the mixture; (E) decreasing the pH of the liquid component of the mixture to generate a second lead salt precipitate; and (F) isolating the second lead salt precipitate from the liquid component of the mixture. Thereafter, the isolated lead salt precipitate may be converted to leady oxide for use in the manufacture of new lead-acid batteries. 123-. (canceled)24. A method of forming a new lead-acid battery from recycling of a lead-acid battery comprising:processing a spent lead-acid battery to generate a lead-bearing material;forming a mixture comprising a carboxylate source and the lead-bearing material;generating a first lead salt precipitate in the mixture as the carboxylate source reacts with the lead-bearing material;dissolving the lead salt precipitate;isolating a liquid component of the mixture from one or more insoluble components of the mixture;regenerating the lead salt precipitate;isolating the regenerated lead salt precipitate from the liquid component of the mixture;treating the lead salt precipitate to yield a leady oxide;forming a leady oxide active material with the leady oxide; andforming a new lead-acid battery using the leady oxide active material.25. The method of claim 24 , wherein processing the spent lead-acid battery includes physically breaking apart the spent lead-acid battery and one or more purification steps.26. The method of claim 25 , wherein leady oxide is further processed by ...

Recovery Method of Metal of Photovoltaic Ribbon using Mixed Acid

The present invention relates to a method for recovering metal from a sunlight ribbon using a mixed acid. More specifically, the present invention relates to a method for recovering metal from a sunray ribbon by immersing the solar light ribbon in a mixed acid containing nitric acid and hydrofluoric acid or hydrochloric acid and sulfuric acid in a weight ratio of 99: 1 to 51:49 (Step 1); And recovering copper from the photovoltaic ribbon immersed in step 1 (step 2). In the method for recovering the metal of the solar ribbon using the mixed acid of the present invention, when the copper of the photovoltaic ribbon is recovered using the mixed acid of the present invention, the mixed acid selectively reacts with lead and tin on the surface of the ribbon, Copper that is both a material and a high price can be recovered. In addition, lead and tin can be further recovered after copper is recovered from the ribbon. Therefore, by reusing copper, which is a central material of the solar light ribbon, economical gain can be obtained and environmental pollution can be prevented.

A kind of method reclaiming silver in low silver smelting slag

本发明涉及一种低银熔炼渣中回收银的方法，包括以下步骤：银熔炼渣还原，铅合金真空蒸馏，铅砷锑合金电解，银镍铜合金加压浸出。本方法银熔炼渣加入焦炭还原，得到铅合金和还原渣。将铅合金置于真空炉中进行真空蒸馏，得到铅砷锑合金和镍铜银合金，铅砷锑合金进行电解提取铅，银铜镍合金水淬雾化后加压浸出，得到含银的浸出渣和含镍铜的浸出液，含银的浸出渣进合金炉冶炼提取银，含镍铜的浸出液进一步回收镍和铜。本方法的亮点在于将低银熔炼渣中的金银等贵金属回收，同时实现了铜阳极泥处理过程中铅的开路，实现了资源的再利用，降低了生产成本，节省了资源，无论从资源回收还是环境保护方面都具有十分重要的意义。

Process for the recovery of lead and/or tin or alloys thereof from substrate surfaces

Method of storage battery lead bearing scrap processing

FIELD: nonferrous metallurgy. SUBSTANCE: processing of storage BATTERY lead bearing scrap provides for its desalinizations by solution, that has alkali. Desalinizations is exercised, using sulfur consumption of 110 -120 % from theoretically required amount for sulfate sulfur cleaning. In the case sulfurization is exercised simultaneously with lead scrap suspension division for metal, acid-sulfate and organic fractions. Extracted organic fraction is subjected to lixiviation in alkaline solution with alkali concentration of 40 - 60 g/l with liquid part to hard part ratio as (10 - 15) : 1. Desulfurized metal and acid-sulfate fractions are fed for separate smelting to extract metal lead. After organic fraction lixiviation produced solution is used at scrap separation stage for preparation of suspension and scrap desalinizations. Regeneration of alkali in used solution is exercised by electrodialysis and produced solution of sulfuric acid is used for production of industrial gypsum. EFFECT: method is used in nonferrous metallurgy. 3 cl, 1 dwg, 3 tbl тРОГгЭГгОсС П4 Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2016 104 ' 13) Сл С 22 В 7/00, 13/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 5038646/02, 21.05.1992 (46) Дата публикации: 15.07.1994 (56) Ссылки: Заявка М 3612491, ФРГ, кл. С 22В 13/04, 1987. (71) Заявитель: Ходов Н.В, Кузнецов О.К. (72) Изобретатель: Ходов Н.В., Кузнецов О.К. (73) Патентообладатель: Ходов Николай Владимирович (54) СПОСОБ ПЕРЕРАБОТКИ СВИНЕЦСОДЕРЖАЩЕГО АККУМУЛЯТОРНОГО ЛАКА (57) Реферат: Использование: цветная металлургия, способы переработки аккумуляторного лома свинцовых сернокислотных аккумуляторов. Сущность: переработка свинецсодержащего аккумуляторного лома включает десульфуризацию его раствором, содержащим щелочь, которую проводят при расходе щелочи 110 - 120% от теоретически необходимого на отмывку сульфатной серы, причем десульфуризацию осуществляют совместно с разделением лома в ...

A kind of method of manganese and lead in synthetical recovery electrolytic manganese anode mud

一种综合回收电解锰阳极泥中锰和铅的方法，包括以下步骤：以电解锰阳极泥为原料，首先通过磨洗除硫及除去其他水溶性杂质得到除硫阳极泥，再将除硫阳极泥经高温焙烧后，用烧碱液浸出其中的铅，碱浸后经过滤、洗涤得到低硅低硫富锰渣，将获得的低硅低硫富锰渣用作冶炼金属锰或低微碳锰合金的锰原料；碱浸后滤液中的铅经硫化沉淀回收得到硫化铅精矿。本发明的方法具有锰和铅的回收率高、清洁高效、工艺简单、适用性强、成本低等优点。

Method of producing metallic lead from sweet paste making active part of lead-acid accumulator

FIELD: metallurgy. ^ SUBSTANCE: invention relates to electrolytic production of metallic lead from sweet lead paste that makes active part lead-acid accumulator. Method comprises the following steps: a) leaching of sweet paste by bringing it in contact with solution containing ammonium chloride to obtain solution after leaching and discharge of CO2 gas; b) separation of first solid residue and first clarified solution after leaching from step (a); c) leaching solid residue separated at step (b) by bringing it in contact with solution comprising ammonium chloride and hydrogen peroxide; d) separation of second solid residue and second clarified solution after leaching from solution after leaching from step (c); e) combining first clarified solution after leaching from step (b) with second clarified solution after leaching from step (d) to produce single solution; f) electrolysis of solution from step (e) in flow-through cell at current density of 50 to 10000 A/m2. Note here that electrolysis brings about mossy lead. Invention relates also to method of desulfonation of said paste. ^ EFFECT: higher yield and efficiency, simplified process. ^ 26 cl, 6 dwg, 2 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 467 084 (13) C2 (51) МПК C22B 13/00 (2006.01) C22B 7/00 (2006.01) C22B 3/04 (2006.01) C25C 1/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010125667/02, 27.11.2008 (24) Дата начала отсчета срока действия патента: 27.11.2008 (73) Патентообладатель(и): Энджитек Текнолоджиз С.п.А. (IT) (43) Дата публикации заявки: 10.01.2012 Бюл. № 1 2 4 6 7 0 8 4 (45) Опубликовано: 20.11.2012 Бюл. № 32 2 4 6 7 0 8 4 R U (85) Дата начала рассмотрения заявки PCT на национальной фазе: 30.06.2010 C 2 C 2 (56) Список документов, цитированных в отчете о поиске: WO 2005007904 A1, 27.01.2005. US 4269811 A, 26.05.1981. IT 1239001 В, 18.09.1993. SU 711778 A1, 10.09.1999. SU 1763500 A1, 23.09.1992. RU 2135612 С1, 27.08.1999. СА 1092833 ...

Method for recovering tin and lead from waste printed circuit board

本发明公开了一种从废弃印制线路板中回收锡和铅的方法。本发明方法以废弃印制线路板为原料，将其粉碎到1-2mm；接着按照固液质量体积比为1：5～1：15g/L加入浸出液，浸出液为碱和氧化剂的混合溶液，其中碱的质量体积浓度在80g/L～160g/L，氧化剂质量体积浓度在7g/L～15g/L之间，搅拌浸出1～2？h，浸出温度为70～80℃；浸出后溶液用硫化钠沉淀回收得到硫化铅，除铅后溶液通过电沉积回收得到金属锡，电沉积温度70℃～80℃，电流密度50A/M 2 ～300？A/M 2 。本发明工艺简单，成本低，使得线路板中锡铅可以选择性浸出，实现了线路板中锡铅的绿色资源化处理。

Method for recovering copper and lead from tail liquid and treatment method of leaching tail liquid generated by gold concentrate gold extraction process

本发明公开了从尾液中回收铜、铅的方法及金精矿提金工艺产生的浸出尾液的处理方法，涉及废物回收与资源化技术领域。从尾液中回收铜、铅的方法，包括如下步骤：将尾液与铁离子萃取剂混合进行萃取分离得到萃余相，在70‑90℃、pH＝3.0‑3.8且絮凝剂存在的条件下，将萃余相与硫化物混合反应，经过滤分离得到铜铅固体混合物；其中，尾液中主要杂质包括铁、铜、铅。金精矿提金工艺产生的浸出尾液的处理方法包括上述从尾液中回收铜、铅的方法，通过优化萃余相与硫化物的反应温度和pH值，一方面能够使铜和铅充分分离，另一方面还不会引入其他杂质，提升了得到铜铅固体混合物的纯度和提取率。

A kind of method of comprehensively recovering valuable metal in lead skim from sulfuric acid

本发明提供一种从硫酸铅渣中综合回收有价金属的方法，属于湿法冶金技术领域。该方法将硫酸铅渣先于搅拌磨中加硫酸强化浸出，使其中的铜、锌、铟得到浸出进入溶液，用次氧化锌调溶液pH后用锌粉依次从溶液中置换出铜、铟，得到的富含铜、铟的渣返回铜、铟回收工序。硫酸浸出后得到的富含铅银的浸出渣加氯化钙溶液及少量盐酸再次进行浸出，使其中的铅、银得到浸出进入溶液，浸出液用金属铅板置换银得到粗银粉，银置换后液使用电积技术生产电铅。电积过程阳极产生的氯气，经NaOH吸收后产出次氯酸钠溶液。铅电积后液作为浸出剂返回铅银浸出工序。本工艺具有流程短、工序少、能耗成本低等特点，并满足清洁生产的环保要求。

Reduction of zinc oxide from complex sulfide concentrates using chloride processing

本发明提供一种从含锌材料中制备氧化锌的设备及其方法。该方法包括如下步骤：利用盐酸、氯化铁及氧气沥滤复合硫化物材料、利用石灰及氧气从沥滤液中沉淀铁、通过锌粉置换沉淀而从沥滤液中去除铜、银、镉、钴和铅、利用石灰从沥滤液中沉淀氧化锌的步骤、从氯化钙沥滤液中再生HCl以便再生盐酸和石膏沉淀物。此外，本发明还提供了通过溶解氯化铅并用石膏沉淀、从复合硫化物材料中回收铜、银、铅和铁的相关方法。

Reduction of zinc oxide from complex sulfide concentrates using chloride processing

本发明提供一种从含锌材料中制备氧化锌的设备及其方法。该方法包括如下步骤：利用盐酸、氯化铁及氧气沥滤复合硫化物材料、利用石灰及氧气从沥滤液中沉淀铁、通过锌粉置换沉淀而从沥滤液中去除铜、银、镉、钴和铅、利用石灰从沥滤液中沉淀氧化锌的步骤、从氯化钙沥滤液中再生HCl以便再生盐酸和石膏沉淀物。此外，本发明还提供了通过溶解氯化铅并用石膏沉淀、从复合硫化物材料中回收铜、银、铅和铁的相关方法。

Method for recovering lead from waste lead-acid storage battery

本发明公开了一种从废旧铅酸蓄电池中回收铅的办法，其将回收的废旧铅酸蓄电池拆卸下来的铅膏用纯水洗涤至中性或者弱碱性后加入饱和氨水溶液中，在持续充入CO 2 的情况下反应并在反应完成后压滤后得到压滤铅膏；将压滤铅膏用盐酸、甲酸以及柠檬酸的混合酸进行处理，处理时将压滤铅膏挤压并平铺于陶瓷纤维织物带上，从一侧拉入酸洗池体中进行酸浸泡处理，并从另一侧拉出酸洗池体中进行酸洗；酸洗完成后将铅膏在含有Fe 2+ 的溶液中配合铝进行反应，固液分离得到固态氧化铅，而滤液电解得到可用于铸锭的电解铅。本发明的方法简单易行，所用原料和设备都比较常见，可简化工艺，并大幅降低原料成本。

Iron-containing sludge processing method

FIELD: technological processes.SUBSTANCE: invention relates to the blast furnace sludge processing method, containing iron and 4.5–12 wt.% of zinc. This method includes the leaching stage, at which the leaching agents include hydrochloric acid and chlorate, and directly obtained from this leaching stage filtrate pH value is set strictly below 1.5.EFFECT: method allows to significantly reduce the zinc content, reduce the lead content, and also selectively remove zinc and lead with the high degree of extraction of iron and carbon in the spent sludge.14 cl, 2 dwg, 4 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 680 767 C1 (51) МПК C22B 7/04 (2006.01) C22B 3/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C22B 7/04 (2006.01); C22B 3/06 (2006.01) (21)(22) Заявка: 2017142036, 04.05.2016 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): АРСЕЛОРМИТТАЛ (LU) Дата регистрации: 26.02.2019 (56) Список документов, цитированных в отчете о поиске: EA 200600691 A1, 25.08.2006. RU 2277597 C2, 10.06.2006. EP 1042518 A1, 11.10.2000. RU 2404271 C1, 20.11.2010. 05.05.2015 IB PCT/IB2015/000617 (45) Опубликовано: 26.02.2019 Бюл. № 6 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 05.12.2017 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2016/178073 (10.11.2016) C 1 C 1 IB 2016/000578 (04.05.2016) 2 6 8 0 7 6 7 Приоритет(ы): (30) Конвенционный приоритет: Адрес для переписки: 109012, Москва, ул. Ильинка, 5/2, ООО "Союзпатент" (54) СПОСОБ ПЕРЕРАБОТКИ ЖЕЛЕЗОСОДЕРЖАЩЕГО ШЛАМА (57) Реферат: Изобретение относится к способу переработки стадии выщелачивания, устанавливается строго шлама доменной печи, содержащего железо и 4,5 ниже 1,5. Способ позволяет значительно снизить – 12 мас.% цинка. Этот способ включает стадию содержание цинка, уменьшить содержание свинца, выщелачивания, на которой выщелачивающие а также селективно удалить цинк и свинец с агенты включают хлористоводородную кислоту высокой ...

A method of recycling tellurium from tellurium casting mold slag

本发明公开了一种从碲铸型渣中回收碲的方法，包括以下步骤：将碲铸型渣破碎，研磨成碲铸型渣粉末后加入氢氧化钠溶液混合均匀，在70～85℃下滴加双氧水，不断搅拌进行氧化浸出反应，反应完全后进行液固分离得含碲浸出液和浸出渣；含碲浸出液直接返电积工序回收金属碲。本发明采用氢氧化钠和双氧水进行氧化浸出，一步得到含碲浸出液和浸出渣，后期不需要经过中和、煅烧除杂，生产工艺简单，浸出液中的杂质少，大大提高了碲的浸出率，解决了现有技术在使用无机酸的条件下，加入氧化剂碲元素的氧化速度极慢甚至不被氧化的问题。

Method for extracting Pb, In and Ag from indium-containing lead silver residues

本发明公开了一种从含铟铅银渣中提取Pb、In、Ag的方法，该方法包括：Pb提取、In提取、Ag提取。本发明将含铟硫酸铅渣通过回收有价金属Pb、In、Ag，对资源进行充分回收，不仅具有很高的经济价值，同时也避免了铅银渣对环境的污染。

Comprehensive recycling method for high-arsenic soot

本发明公开了一种高砷烟灰综合回收处理的方法。具体方法如下：对高砷烟灰采用两段浸出，两段浸出液进入旋流电解系统提取铜，经过两段深度脱铜，得到铜产品，然后进行脱砷得铜砷渣和硫酸锌溶液，脱砷渣采用碱浸、氧化结晶、预还原、旋流电解工艺生产出单质砷，而高压浸出渣中的铅、银，则用碳铵和氨水进行铅转化，使铅进入料液中，固液分离后得到含铅溶液用于回收铅，浸出渣则采用硫脲浸出得到含银溶液，通过置换得到银粉。本发明将高砷烟灰中的各种有价金属采用不同的工艺进行回收，同时这些工艺之间进行有机结合，使整个体系基本不产生废渣、废水、废气等，资源化程度高，工艺先进，回收率高，回收成本低廉，而且环保意义非常明显。

A kind of integrated conduct method of arsenic-containing material

本发明涉及一种含砷物料的综合处理方法，包括从含有砷锑铅的冶炼烟尘综合回收砷、锑、铅、铋等有价金属的生产，减少砷在系统累积并使其无害化。本发明提供的方法通过常压碱浸，脱除烟尘中可溶砷，浸出液中三价砷经催化氧化为五价砷后，采用分布结晶法合成稳定的固砷矿物，然后采用堆存的方式固化固砷矿物，浸出渣经洗涤、还原熔炼、氧化吹炼等工序，最大化回收利用各有价元素。此方法将砷从烟尘中脱除，而使锑、铅、铋等尽可能留在脱砷渣中，可以实现砷与有价金属的分离并无害化。本发明资源综合利用率高，原料适应范围广，解决了传统工艺提取过程中污染问题，特别是铅锌冶炼过程中产生的烟灰，本方法的优势更加明显。

A method of from zinc smelting dreg comprehensively recovering valuable metal

本发明提供了一种从锌冶炼废渣综合回收有价金属的方法，包括以下步骤：碱浸、净化、碳分、酸浸、沉铜、二次碱浸、沉砷、酸溶、硫化、沉铁、沉锌、碳酸沉铅、硝酸溶解、硫酸沉铅及第三次碱浸；本发明利用湿法浸出工艺，避免了高温冶炼提取，降低了能耗，提高了回收率，实现了无害化处置，达到节能环保、成本低廉的目的；通过本发明的方法可使得铜、铅、锌、铁均得到有效回收且回收率高，砷元素得到无害化处理，具有良好的环境、经济、社会效益和可实施性。

Method for recycling valuable metal in waste circuit board

本发明公开了一种回收废电路板中有价金属的方法，包括以下步骤：将废电路板经破碎、重选后制得多金属粉末；向多金属粉末中加入稀酸溶液，搅拌浸出，过滤，得浸出渣I和浸出液I；按酸溶液与浸出渣I液固质量比10～40:1向浸出渣I中加入酸溶液，然后加氧化剂，搅拌浸出，浸出完成后过滤，得浸出渣II和浸出液II；浸出液II经旋流电积得阴极铜和电解后溶液；向浸出渣II中加入碱和还原剂，在400～600℃条件下熔炼，水浸，过滤，得含有贵金属的粗铅和浸出液III；浸出液III经净化，蒸发浓缩，得浓缩碱溶液和锡酸钠晶体。该回收废电路板中有价金属的方法流程短、效率高、成本低、清洁无污染。

Method for harmlessly treating and recycling magnesium fluoride waste acid in zinc smelting process

本发明涉及一种在锌冶炼过程中无害化处理回收镁氟污酸的方法，包括：1)污酸的无害化回用；2)解析后液脱镁，在解析后液中加入晶种、改性剂、脱镁剂、石灰等，加热升温搅拌，过滤，得到脱镁后液和氟化镁精矿，脱镁后液加入单宁酸沉锗，回收锗，过滤得到单宁锗渣和沉锗后液，单宁锗渣灼烧得到锗精矿，沉锗后液送浸出空气氧净化除铁除氟；3)沉锗后液空气氧化除铁除氟；4)除铁除氟后液铜渣除氯。本发明达到了氧化镁开路、降低氧化镁在湿法炼锌溶液系统的危害，无害化回收镁及氟和酸；通过加入活性剂，解决了高含锌溶液易形成胶体问题，改变了氟化镁渣在高锌离子溶液中的特性，使氟化镁渣形成海绵状结构、易于液固分离。

Extracting method for lead in silver separating residues

本发明提供一种分银渣中铅的提取方法，涉及有色金属冶金技术领域。该方法主要包含以下步骤：分银渣加入废碱液加压浸出铅；含铅浸出液加入硫化剂沉淀制备硫化铅，沉铅后液进行碱液再生；再生碱液作为浸出母液返步骤1循环使用。本发明具有以废治废、铅回收率高、成本低、投资少、易于实现工业化生产的特点。

Process and plant for removing lead, cadmium and zinc from dusts

为了从电热生产黄磷的电力除尘器内收集的粉尘中去除铅、镉和锌，首先在通风的反应区内用温度约为60℃，至少含有25%(重量)P 2 O 5 的磷酸煮解上述粉尘。然后在过滤区内将该煮解液分离成基本上不含铅、镉和锌的固体残余物和含有已溶解的铅、镉和锌的磷酸。

The method that wiring board bath smelting cigarette ash noble metal recycles chlorination enrichment

线路板熔池熔炼烟灰贵金属循环氯化富集的方法，属于烟灰中溴、贱金属和稀贵金属等有价元素综合回收领域，特别涉及线路板熔池熔炼烟灰中贵金属循环氯化富集的的方法。主要包括线路板熔池熔炼烟灰预处理工艺和稀贵金属循环氯化富集工艺。回收得到粗铜、粗硫酸锌、溴盐、氯化铅和贵金属富集渣与传统工艺相比，该发明技术实现了稀贵金属的循环富集，避免尾液排放造成的有价金属损失和二次污染。

Storage battery solid waste lead slag efficient treatment device

本发明涉及一种废铅渣处理领域，尤其涉及一种蓄电池固废铅渣高效处理装置。本发明的技术问题：提供一种带有自动清洁和筛选功能的蓄电池固废铅渣高效处理装置。一种蓄电池固废铅渣高效处理装置，包括有底盘、搅拌桶、第一支架、第一桶、控料机构，第一输送管、第二支架、第二桶、第二输送管、导流阀门等；底盘上固接有搅拌桶，搅拌桶左侧固接有第一支架，第一支架上安装有第一桶，第一桶上连通有第一输送管，第一桶内设有控料机构。本发明通过喷水头和进水管的配合使用，可以充分的将搅拌桶内壁上的粘黏的混合物冲洗下来，并且配合转动轴的旋转以及搅拌桶内开设的凹槽，从而从分的对搅拌桶内壁以及转动轴进行全方位的冲洗。

Extraction of lead in form of high-purity lead carbonates from dead lead batteries, including electrode paste

FIELD: metallurgy. ^ SUBSTANCE: lead-containing raw material is leached in solution of acetic, nitric, fluoroboron or hydrofluosilicic acid for dilution of lead oxide and other soluble substance; then, hydrogen peroxide or sulphur dioxide or sulphite is added for recovery of lead dioxide not dissolved in acid leaching solution to soluble Pb (II) compounds or for formation of non-soluble lead sulphite and sulphuric acid for conversion of all dissolved lead compounds to non-dissolved lead sulphate. Solid phase consisting of lead sulphate and non-dissolved substances is separated from acid leaching solution and selective dilution of lead sulphate contained in the above separate solid phase is performed in water solution at least of one solubilising compound; after that, the solution containing the dissolved lead sulphate is separated from solid-phase residue which includes non-soluble impurities Then, to the separated lead sulphate solution there added are sodium, potassium or ammonium carbonates for formation of non-soluble lead carbonate and/or lead oxicarbonate and soluble sulphate of the same cation of the added carbonate salt, and deposited lead carbonate and/or oxicarbonate is separated from the dissolving solution which now also contains cation sulphate of the above solubilising compound ^ EFFECT: extraction of lead at inconsiderable effect on the environment in valuable form of high-purity lead carbonates which can be converted to high-purity lead oxide by heat treatment in the furnace at relatively low temperature suitable for production of active electrode pastes of new batteries. ^ 19 cl, 1 tbl, 2 dwg, 13 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 457 264 (13) C2 (51) МПК C22B 13/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009131073/02, 15.01.2008 (24) Дата начала отсчета срока действия патента: 15.01.2008 (73) Патентообладатель(и): МИЛЛБРУК ЛИД РЕСАЙКЛИНГ ТЕКНОЛОДЖИЗ ЛИМИТЕД (IE) R U ...

A kind of zinc leaching residue integrated conduct method

本发明涉及湿法冶金技术领域，尤其是一种浸锌渣湿法浸出铅、银方法，经过将浸锌渣采用氯化钙溶液与双氧水的混合液进行浸出处理，并对浸出过程的液固比、氯化钙浓度以及双氧水加入量的控制，结合浸出温度、浸出时间的控制，极大程度的提高铅、银浸出率，使得大量的铅、银进入到浸出液中，保证了后续置换回收铅、银过程的回收率较高。

Hydrometallurgical method of producing metallic lead from materials containing oxides, particularly from the active material of accumulators

ABSTRACT In a method of producing metallic lead from a material including lead dioxide and/or metallic lead, including a step for dissolving the lead contained in the material and an electrolysis step for the cathodic deposition of the dissolved lead, the dissolving step is carried out with the use of an acid electrolyte in the presence of a redox couple which has a potential between its oxidised and reduced oxidation states such as to reduce the lead dioxide and/or oxidise the lead and which can be regenerated during the step for the electrochemical deposition of the dissolved lead. The method is used, in particular, for the production of lead from the active material of spent accumulators.

A kind of method of lead-acid accumulator dismantling cream mud Whote-wet method recycling lead

本发明公开了一种铅酸蓄电池拆解膏泥全湿法回收铅的方法，包括以下步骤：S1：铅酸蓄电池经拆解后，收集的铅膏采用纯碱或碳酸铵将其中的硫酸根转化为碳酸根(脱硫反应)，其主要化学反应为：PbSO4+(NH4)2CO3→PbCO3↓+(NH4)2SO4；PbSO4+Na2CO3→PbCO3↓+Na2SO4；S2：采用亚硫酸钠或亚硫酸铵将铅膏中的PbO2转化为PbO(还原反应)，其主要化学反应为。本发明规避了火法工艺的高温条件，操作更加便捷，同时更加节能，反应全程处于常温常压反应，实施更加方便，无SOx和粉尘产生，避免污染环境，更加环保，相对火法工艺流程短、投资省，工艺调整灵活，金属回收率高。

A method for recovering precious metals

A kind of scrap lead cream wet desulphurization and the processing system of desulfurization Mother liquor

本发明公开了一种废铅膏湿法脱硫与脱硫后母液的处理系统，具体包括：废铅酸蓄电池经过破碎分选后分选出的未脱硫铅膏由输送机送入脱硫反应罐内；脱硫剂从脱硫反应罐的中部和底部两个加药口加入至脱硫反应罐内；脱硫反应罐通过提升泵与压滤机相连；压滤机的一端与所述滤液储存罐相连；在竖流式沉降器内完成沉淀絮凝过程；沉淀絮凝后的渣泥沉积一定量后由竖流式沉降器的底部放出，而清液由竖流式沉降器的上方流入pH值调节罐；在pH值调节罐内完成中和反应；在pH值调节罐中处理后的脱硫母液再进入蒸发母液储罐中等待进入下一工序。上述系统采用制浆‑研磨‑脱硫等工艺，克服了现有废铅膏湿法脱硫技术存在的反应效率低、脱硫不彻底等问题。

Process for the selective recovery of lead and silver

Abstract The present invention relates to a process for the selective and ecoefficient recovery of lead and silver jointly as a concentrate product from metallurgical residues. The main advantage over the state-of-art is that concentrates of silver and lead can be recovered simultaneously from metallurgical residues in only three overall steps including a purification step that can reduce the content of chloride contaminants to as low as 0.01% on a dry weight basis. This method avoids further metal separation steps and represents an economically viable process to selectively obtain silver and lead in one concentrate without the need for high-cost equipment. Date Recue/Date Received 2021-04-21

Method for preparing lead oxide from waste lead paste

本发明涉及铅酸蓄电池技术领域，针对现有技术的废铅膏制备氧化铅过程中化学试剂消耗量较大及工业生产成本较高的问题，公开了一种废铅膏制备氧化铅的方法，包括如下制备步骤：（1）铅膏溶解浸出；（2）滤渣溶解浸出；（3）氯化钠母液循环再生；（4）氧化铅的制备；（5）氢氧化钠母液再生循环；（6）氧化铅烘干研磨。将本发明是一种高效，高清洁，低耗，低成本，且高效率的废铅膏制备高纯氧化铅方法，合成成本低，基本实现零浪费，达到较高的回收利用率；制备得到性能优异的成品氧化铅，粒径一致性好，粒径均匀会使得材料的电学性能提升；制备工艺简单，合成周期短，合成效率高，工艺步骤可控性好，可以实现大规模生产。

Method for separating selenium, tellurium, arsenic, copper, lead and silver and enriching gold from copper anode slime

本发明公开了一种从铜阳极泥中分离硒碲砷铜铅银及富集金的方法，涉及稀贵金属冶金技术领域，包括如下步骤：将铜阳极泥低温氧化焙烧得到的焙烧产物与氢氧化钠反应得含硒碲砷浸出液和碱浸渣；浸出液与石灰水反应得含硒碲溶液和砷酸钙渣；碱浸渣与硫酸反应得硫酸铜和酸浸渣；将硫酸与含硒碲溶液反应得碲酸和含硒溶液；将酸浸渣与硝酸反应得硝酸银溶液和铅金渣；将硝酸银与盐酸反应得氯化银和硝酸；将铅金渣与碳酸钠溶液反应得碳化渣和硫酸钠溶液；将碳化渣与硝酸反应得硝酸铅溶液和含金富集物；将硝酸铅溶液与硫酸反应得硫酸铅和硝酸溶液。本发明目的是解决现有从铜阳极泥中回收金属方法存在成本高、回收金属单一、综合回收效果差等问题。

Comprehensive utilization method of iron ore sintering smoke dust leaching solution

本发明公开了一种铁矿烧结烟尘灰浸取液的综合利用方法，属于工业废弃物处理技术领域。该方法采用水浸取铁矿烧结烟尘灰，分离得到浸取液和浸取渣；浸取液加入草酸钠沉淀，经洗涤、干燥、煅烧得到三氧化二铋产品，沉铋滤液经铬酸钠沉淀反应得到铬酸铅产品；分铅滤液采用P507+磺化煤油有机相萃取、硫酸溶液反萃，水热处理，得到硫酸钙晶须产品；有机相萃余水溶液经净化、两段转化反应，得到硫酸钾和工业氯化钠产品；本发明方法工艺设备简单，操作容易、安全，能实现烧结收尘灰中钾、钠、钙、铅及铋等元素的高效回收利用，提高原料附加值，实现烧结烟尘灰资源化利用，变废为宝，并减少环境污染，具有良好的工业化推广应用前景。

A kind of method that arsenic-containing smoke dust dearsenification and distribution crystallisation synthesize solid arsenic mineral

本发明属于冶金技术领域，尤其涉及一种含砷烟尘脱砷及分布结晶法合成固砷矿物的方法，该方法依次包括氧压水浸、浸出液固砷、浸出渣洗涤和洗渣回收有价金属四个步骤，该方法通过氧压水浸，脱除烟尘中可溶砷，浸出液经分步结晶法合成稳定的固砷矿物，然后采用堆存的方式固化固砷矿物。浸出渣经洗涤、还原熔炼、氧化吹炼等工序，最大化回收利用各有价元素。此方法将砷从烟尘中脱除并合成稳定的固砷矿物，而使锑、铅、铋等尽可能留在浸出渣中，实现砷与有价金属的分离并无害化。本发明资源综合利用率高，原料适应范围广，解决了传统工艺提取过程中污染问题，特别是铅锌冶炼过程产生的烟尘，本方法的优势更加明显。

Method for the treatment of iron-containing sludge

Method for recovering lead from lead paste and use thereof in a method for recovering lead-acid battery components

本发明涉及一种通过电解从铅膏中回收铅的方法，其中所述膏包含硫酸铅。该方法提供了对未脱硫的膏的浸取，并随后通过沉淀除去了硫酸盐；然后将含有铅离子的浸出液进行电解以回收金属铅。本发明还涉及一种用于回收铅蓄电池组件的方法，其中根据上述方法来回收蓄电池的膏中所含的铅。

Recovery of iron products from waste material streams

A method for the recovery of iron products, specifically direct reduced iron and iron oxide suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by treating the waste streams with an ammonium chloride leaching solution, separating the undissolved precipitates comprising iron compounds from the leachant solution, and further treating the undissolved precipitants by elevated temperature roasting, resulting in the iron feedstocks.

Utilizing blast furnace dust and sludge, by granulometrically sorting light component to give recyclable heavy fraction and zinc and/or lead enriched light fraction

A method for utilizing blast furnace dust and sludge, separated in a cyclone into a recyclable heavy component (a) and a non-recyclable light component (b) with high zinc and/or lead content, involves granulometrically sorting (b) to give (i) a coarse, heavy fraction depleted in zinc and/or lead (to be recycled to the furnace) and (ii) a fine, light fraction consisting of an aqueous suspension containing the fines fractions enriched in zinc and/or lead. A method is claimed for utilizing blast furnace dust and sludge, obtained by filtering and/or scrubbing the furnace combustion gas before release into the atmosphere to give a sludge, which is separated in a cyclone into a heavy component (a) (recycled to the furnace) and a light component (b) (not recycled due to the high zinc and/or lead content). The novel feature is that the light component (b) is granulometrically sorted to give (i) a coarse, heavy fraction depleted in zinc and/or lead (to be recycled to the furnace) and (ii) a fine, light fraction consisting of an aqueous suspension containing the fines fractions enriched in zinc and/or lead.

Copper soot smelting and separation combined treatment method

一种铜烟灰冶选联合处理的方法，将铜烟灰球磨至要求粒度后在水溶液中浸出，加入硫化钠使整个料浆的金属离子混合电位控制在要求数值，同时加入硫酸调整料浆的pH值保持在要求数值，当溶液电位稳定后继续搅拌一段时间后过滤，浸出液控制金属离子混合电位与pH值分别产出硫化砷和硫化锌沉淀后送废水处理，浸出渣经过碱性球磨转化后直接浮选产出铜精矿和浮选尾渣。本发明采用控电位硫化浸出和选矿相结合的方法分步回收有价金属，这些过程紧密关联，单独过程都不能达到铜烟灰中有价金属选择分离的预期效果。砷和锌的浸出率均达到95.0%以上，铜直收率达到98.0%以上。

Comprehensive soot recovery method based on chloride leaching

本发明属于烟灰回收技术领域，公开了一种基于氯盐浸出的烟灰综合回收方法。该方法采用KCl盐溶液加温浸出得滤渣和富铅滤液；富铅滤液冷却过滤得铅精矿和脱铅后液；脱铅后液处理得锌精矿和净化液；净化液蒸发结晶，得KCl结晶盐和结晶母液；结晶母液经过萃取、洗涤、反萃，分别得到RbCl和CsCl的反萃液，RbCl反萃液蒸发结晶得到RbCl产品，采用SnCl 4 对CsCl进行沉淀，得到Cs 2 SnCl 6 固体，经煅烧后再提纯得到CsCl产品。本发明提供的基于氯盐浸出的烟灰综合回收方法利用烟灰自身组成特性，将Pb、Zn、Cu、K、Rb分别提取并制备为高附加值产品，化学试剂用量少，浸出效率高，成本低，经济效益明显。

Method for recycling lead oxide-containing waste material

Provided is a method for recycling a lead oxide-containing waste material, comprising: (1) contacting the lead oxide-containing waste material with a desulphurizer under desulphurization reaction conditions, and performing a solid-liquid separation on the mixture after contacting to obtain a filtrate and a filtration residue; (2) performing a conversion reaction on the above-mentioned filtration residue at a temperature of 350-750°C so as to convert the lead-containing components in the filtration residue into lead oxide; (3) contacting the product obtained from step (2) with an alkaline solution so as to dissolve the PbO therein, and then performing a solid-liquid separation to obtain a PbO-alkaline solution; and (4) crystallizing the PbO-alkaline solution from step (3) to obtain PbO crystals and an alkaline filtrate. The method can reduce the energy consumption.

Process for the recycling of electrical batteries, assembled printed circuit boards and electronic components

Hydrometallurgical treatment process for extraction of precious, base and rare elements

This invention relates to a hydrometallurgical process for the recovery and separation of valuable precious, base or rare elements such as platinum group metals (PGMs), gold or silver, and other valuable base and rare metals such as nickel, cobalt, copper, rare earth elements (REE), yttrium and scandium, as well as uranium, thorium, manganese, zinc, cadmium, molybdenum, titanium, tin, and other minor elements such as vanadium, germanium and gallium from a feed material comprising ores, concentrates and other materials. In particular, the process comprises quantitative removal of additional base, rare and gangue elements for increased efficiency of further treatment of the solids for valuable metals recovery and/or recycling and/or separation of valuable metals from pressure leach residue and may be integrated into one or more existing valuable element extraction processes.

Process for removing heavy metals from soil

Method of separating lead from brass recycling circuit, involves subjecting brass recycling circuit to electrolytic copper refining in sulfuric acid, cementation by sodium hydroxide and zinc addition and electrolytic zinc recovery

A brass recycling circuit is subjected to electrolytic copper refining in sulfuric acid to form copper cathode material. The brass recycling circuit is further subjected to solid-liquid separation (s1), cementation by sodium hydroxide and zinc addition, solid-liquid separation (s2), electrolytic zinc recovery from electrolyte, precipitation with lime and/or sodium hydroxide, electrolytic treatment with addition of water, sulfuric acid and copper-containing sulfuric acid. A brass recycling circuit is subjected to electrolytic copper refining in sulfuric acid to form copper cathode material. The brass recycling circuit is further subjected to solid-liquid separation (s1), cementation by sodium hydroxide and zinc addition, solid-liquid separation (s2), electrolytic zinc recovery from electrolyte, precipitation with lime and/or sodium hydroxide, electrolytic treatment with addition of water, sulfuric acid and copper-containing sulfuric acid, and optionally copper salts and other copper-containing compounds are subjected to electrolytic copper refinement to form copper cathode material.

Hydrometallurgical process for recovering lead from lead sulfate

The present invention belongs to hydrometallurgical technology, which relates to the technology of lead production using the wholly hydrometallurgical technology to lead sulfate(PbSO4) residue accompanied the process of zinc smelting through hydrometallurgy or lead mud of lead storage battery. The present technology use CaCl 2 + NaCl as leaching solvent, leach the high leaching slag containing lead sulfate of hydrometallurgical zinc smelting, lead slag of the zinc oxide containing lead after lead leaching or the lead mud of the lead acid storage battery after being disassembled, use zinc to displace lead in the leached solution, recycle lead in the displaced solution, the recycled lead is returned back to the process of displacing of lead, the solution containing CaCl2 + NaCl after zinc recycling is recycled to the process of leaching of chlorine salt of lead sulfate. The present invention has the advantages of low energy consumption, low cost and easy popularization and application, and eliminate utterly the fume pollution of lead fume, lead dust and SO2 etc.