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Matches 1 - 50 out of 1,415

Document Document Title
WO/2017/136881A1
A method, apparatus and system for processing a composite waste source, such as e- waste, is disclosed. The composite waste source may comprise low-, moderate and high-melting point constituents, such as plastics, metals and ceramics. Th...  
WO/2017/107664A1
A valuable metal comprehensive recovery processing device and method. The valuable metal comprehensive recovery processing device comprises a melting pool (1), a reaction tower (2), and a flue (3). A first baffle wall (5) and a second ba...  
WO/2017/064735A1
Method for the production by thermal way of a concentrated solid - substantially iron free - enriched in contents of indium, germanium, zinc, silver, lead and possibly other metals, starting from the residuals generated in the zinc produ...  
WO/2016/198976A1
A method of integrated chemical and bacterial leaching of a base metal from a mineral is disclosed. The method includes leaching a base metal from a mineral with an ammoniacal thiosulfate chemical leaching solution having a pH from about...  
WO/2016/178073A3
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 ...  
WO/2016/178073A2
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 ...  
WO/2016/178040A1
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 ...  
WO/2016/174156A1
The invention relates to a method for the treatment of used batteries (10), in particular lithium batteries, having the steps: comminuting the batteries (10) such that comminuted material (24) is obtained, inactivating the comminuted mat...  
WO/2016/099209A1
The present invention relates to a reduction device using liquid metal, which can both improve the oxidation reaction of a reducing agent for reducing a material to be reduced using liquid metal and effectively control the same. The redu...  
WO/2016/089064A1
The present invention relates to a method for removing lead from copper alloy scraps using a calcium wire. The method comprises the steps of: dissolving copper alloy scraps; adding a calcium wire to a copper alloy waste melt and dissolvi...  
WO/2016/049994A1
A lead paste desulfurization method based on a grinding mechanism comprises: fully stirring lead paste slurry and a desulfurization agent in a stirring tank, pumping the slurry in the stirring tank and enabling the slurry to flow through...  
WO/2016/045522A1
Disclosed is a fuming furnace (10) with a lead collecting and discharging function, the fuming furnace (10) comprising a furnace body (101); the furnace body (101) is provided with a hearth (1011) therein and a tuyere (1012) thereon; the...  
WO/2016/026344A1
A method for recovering lead oxide from a pre-desalted lead plaster, comprising the following steps: a. dissolving the pre-desalted lead plaster by using a complexing agent solution, and reacting all of PbO therein with the complexing ag...  
WO/2015/192234A1
Hydrometallurgical techniques for the selective recovery of Zn, Mn and Pb in that order from sludges or various metallurgical residues can include leaching steps to extract the zinc and manganese; the steps of removing iron, aluminum and...  
WO/2015/123930A1
Provided is a method for directly recovering lead oxide used for a lead-acid battery cathode from waste lead paste. The method comprises: (1) contacting waste lead paste with a barium-containing desulphurizer under desulphurization react...  
WO/2015/113141A1
A process is provided for separation of at least one metal sulfide from a mixed sulfide concentrate. The process may comprise: subjecting the mixed sulfide concentrate to flotation in which at least one sulfide comprising antimony, arsen...  
WO/2015/106486A1
A heavy metal waste gypsum minimization innocuity resource treatment method relates to the technical fields of circular economy and environmental protection. Waste gypsum containing heavy metal is used as a raw material, and minimization...  
WO/2015/103845A1
A method for treating a lead-containing raw material, comprising the following steps: under the condition of a first pH value, under the effect of a catalyst, reacting a lead-containing raw material, a sulphate A, a complexing agent A, a...  
WO/2015/057470A1
A process for cullet beneficiation by precipitation. A mass of cullet is melted to form a body of molten glass having a heavy metal concentration of greater than 100 ppm. A precipitate agent is introduced into the body of molten glass to...  
WO/2015/051761A1
Provided are a negative electrode active material of a tin-based ternary alloy A1-xBxSn5 and a preparation method therefor, with 0.01≤x≤0.99. Compared with other tin-based alloy materials, the negative electrode active material of th...  
WO/2015/024073A1
A process for treating a solid material containing lead and elemental, sulphur, the process comprising feeding the solid material to a furnace containing a bath of molten slag under conditions such that elemental sulphur burns in the fur...  
WO/2014/205200A1
Compositions, methods, and systems for reducing leaching of heavy metals from sorbents having adsorbed heavy metals are described herein. Such compositions and methods may include reducing agents.  
WO/2014/201948A1
A wet method for recovering a lead-containing raw material, comprising: 1) a lead-containing raw material is leached with a solution containing a sulphate, a complexing agent and a catalyst, a reductant is added to reduce lead dioxide or...  
WO/2014/177931A3
A method for preparing Electric Arc Furnace dust (EAFD) for metal recovery, comprising: a) mixing the EAFD comprising zinc oxide or lead oxide, or a mixture of both, with a liquid and a binder to produce an EAFD mixture; b) producing a s...  
WO/2014/154160A1
A hydrometallurgical process for recovering lead from lead sulfate; the process uses CaCl2 + NaCl as a leach solution to leach the high leaching residue containing lead sulfate obtained from hydrometallurgy of zinc, the lead slag obtaine...  
WO/2014/153672A1
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 oxidize...  
WO/2014/148339A1
In order to selectively extract copper and/or lead from an acidic solution containing high concentrations of manganese, etc., the valuable-metal extracting agent of the present invention is expressed by general formula (1). In the formul...  
WO/2014/076547A1
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 inclu...  
WO/2014/040332A1
Disclosed in the present invention is a method for reutilization of lead from cathode-ray tube glass of lead-containing discarded electronic wastes. The method comprises: taking lead-containing cone glass of a cathode-ray tube as a sampl...  
WO/2014/028856A3
The present disclosure describes a series of improvements to the positive active material and negative active material of electrochemical cells. In particular, the present disclosure describes improvements in the lead oxide powder, proce...  
WO/2013/118695A1
Provided is a method for separating a heavy metal from a glass with high efficiency and at low cost. The present invention provides a method for separating a heavy metal from a glass containing a heavy metal oxide and a silica, comprisin...  
WO/2013/073663A1
This direct-reduced iron production system is provided with: a gas reformer (51) that reforms natural gas by supplying steam; a gas heater (56), which is a heating means for heating the reformed gas (52) reformed by the gas reformer (51)...  
WO/2013/056348A1
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...  
WO/2013/056348A4
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...  
WO/2013/034049A1
Disclosed is a comprehensive recovery method for a complex material containing arsenic and valuable metal slags, comprising passing the materials containing arsenic through a primary rotating kiln to volatilize the arsenic, and through a...  
WO/2013/025169A1
Lead and/or Indium cam be recovered from cullet containing indium and/or lead, such as cullet from CRTs and flat panel displays. A chloride salt melt including AlCl3 is used to dissolve the cullet. The melt may be electrolyzed and the le...  
WO/2013/020175A1
A process for treating a mixed sulphidic material containing lead sulphide and at least one other metal sulphide comprises the steps of subjecting the mixed sulphidic material to selective oxidation such that lead sulphide in the materia...  
WO/2012/174235A1
Novel intermetallic materials are provided that are composed of tin and one or more additional metal(s) having a formula M(1-x)-Sn5, where -0.1 ≤ x ≤ 0.5, with 0.01 ≤ x ≤0.4 being more preferred and the second metallic element (M...  
WO/2012/135539A1
Systems and methods for processing lead-containing glass are generally described. In certain embodiments, at least a portion of the lead within the bulk of the lead-containing glass is removed from the lead-containing glass and transferr...  
WO/2012/065327A1
Disclosed is a continuous lead smelting device, which includes a reaction furnace (1) and a separating wall (4) provided therein for dividing furnace chamber of the reaction furnace(l) into oxidation region (Y) and reduction region (H). ...  
WO/2012/008453A1
Disclosed is a rotary kiln provided with a rotary furnace in which an object to be treated containing a metal is burnt, an electric furnace which is connected to the rotary furnace via a connecting portion and which separates the metal f...  
WO/2011/147151A1
A method for non-cyanide recycling waste circuit board (1), comprises the following steps: mechanical crushing (2) waste circuit board (1), separating crude copper powder (4) from nonmetal powder through gravity separation (3), smelting ...  
WO/2011/139603A3
A method for reducing tin in lead bullion has the steps of adding an Arrhenius base to a kettle containing lead bullion and tin, adding a byproduct of conventional detinning to the kettle, agitating contents of the kettle, and removing a...  
WO/2011/139603A2
A method for reducing tin in lead bullion has the steps of adding an Arrhenius base to a kettle containing lead bullion and tin, adding a byproduct of conventional detinning to the kettle, agitating contents of the kettle, and removing a...  
WO/2011/135184A1
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 i...  
WO/2011/135991A1
Disclosed is a valuable metal recovery method that has excellent valuable metal selectivity and recovery efficiency, and furthermore is capable of reusing materials that were used in the recovery of a valuable metal. The valuable metal r...  
WO/2011/132705A1
Disclosed is a treatment agent that can efficiently remove heavy metals from contaminated water by putting a treatment agent into contact with contaminated water, wherein the treatment agent comprises a compound — that reduces the pH o...  
WO/2011/040344A1
Disclosed is a method for producing briquettes, by which briquettes having enhanced strength can be produced even when the amount of a binder used therefor is reduced as much as possible. Specifically disclosed is a method for producing ...  
WO/2011/020181A1
Calcium (Ca), manganese (Mn) and magnesium (Mg) carbonate plus lead (Pb) and zinc (Zn) sulphide minerals in a permeable host, crushed ore, concentrates or as mine discharge tailing are selectively solution mined (in-situ or ex-situ) with...  
WO/2011/022514A1
The present disclosure provides a solder dross removal apparatus (10) and methods useful for collecting and treating metal oxides (dross) formed in a soldering process, as well as for reclaiming solder from the dross. Among numerous othe...  

Matches 1 - 50 out of 1,415