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Matches 1 - 50 out of 1,474

Document Document Title
WO/2019/171282A1
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 remova...  
WO/2019/128863A1
A method for circulated chloridized enrichment of noble metals from circuit board molten pool smelted flue dust. The smelted flue dust is subjected to acid extraction, and calcined two times to obtain calcined sands and flue gas, the cal...  
WO/2019/115543A1
Disclosed is a process for the production of a crude solder product and a copper product comprising the steps of a) providing a black copper comprising >= 50%wt of copper together with >= 1.0%wt of tin and/or >= 1.0%wt of lead, and (i) r...  
WO/2019/101633A1
The current invention, in a first aspect, concerns a method for separating a lead component from a lead coated glass, for instance glass from a CRT recycling process, whereby the coated glass is crushed and ground to achieve a finely gra...  
WO/2019/071797A1
A method for producing mixed slag containing nickel and iron, comprising the following steps: S1. furnace slag mixing: adding nickel smelting slag into a reaction apparatus, and adding one or more of lead smelting slag, blast furnace sla...  
WO/2019/071795A1
A manufacturing method using a copper-containing slag, comprising the following steps: S1, slag mixing: putting a copper slag into a reaction device and adding calcium-based minerals and additives, heating the slag into a molten state an...  
WO/2019/071788A1
A manufacturing method using a copper and iron containing mixing slag. The manufacturing method comprises the following steps: S1, slag mixing: putting a copper slag into a smelting reaction device, adding one or more of a lead smelting ...  
WO/2019/071787A1
A method for recovering valuable components from smelting slag containing nickel, comprising: adding nickel smelting slag into a reaction device, adding a calcium-series mineral and an additive, forming mixed slag, heating the mixed slag...  
WO/2019/071793A1
A method for recovering a valuable component from slag containing copper, comprising: S1. mixing furnace slag: adding copper slag into a smelting reaction device, adding a calcium-series mineral and an additive, forming mixed slag, heati...  
WO/2019/071790A1
A method for recovering valuable components from mixed slag containing zinc and iron, comprising the following steps: S1, adding zinc smelting slag into a heat preservation device or into a smelting reaction device from which slag may fl...  
WO/2019/071642A1
A method for recovering lead from waste lead-acid battery lead paste, relating to the technical field of hydrometallurgy. In the method, firstly a reducing agent and lead paste are added into a zinc chloride solution for leaching in a st...  
WO/2019/071792A1
A production method based on smelting reduction of slag containing zinc and iron. The method comprises the following steps: S1, adding zinc smelter slag into a thermal insulation apparatus or a smelting reaction apparatus allowing slag t...  
WO/2019/071789A1
A method for recovering valuable components from zinc smelting slag. The method comprises the following steps: S1, adding zinc smelting slag to a heat insulating device or a smelting reaction device from which slag may flow out, and addi...  
WO/2019/047468A1
A method for sulfuration of a tin refining sulfur slag, comprising: uniformly mixing the sulfur slag and a sulfurizing agent, then placing the mixture into a sealed container, and performing a sulfuration reaction under the oxygen-free c...  
WO/2019/043261A1
The present application relates to a process for the purification of waste materials or industrial by-products, the process comprising the steps of: a) Preparing a composition (C) by blending or mixing waste materials or industrial by-pr...  
WO/2018/234855A1
This invention relates to an integrated process for recovering value metals from sulphide ore which includes the steps of bulk sorting 16 and screening 24/28 crushed ore. The sorted/screened coarse ore stream is ground and classified 20 ...  
WO/2018/189154A1
Disclosed is a pyrometallurgical process for producing a crude solder from a feedstock selected in terms of its levels of Sn, Cu, Sb, Bi, Zn, As, Ni and Pb, the process comprising at least the steps of obtaining in a furnace a liquid bat...  
WO/2018/145172A1
The Invention will find application in the processing of hazardous waste, which contains lead compounds, polymers, metals and other waste. The method includes stages as follow: A first stage (A) where is conducted a pre-processing of haz...  
WO/2018/091361A1
A method for extracting and separating Gold, Silver, Copper, Zinc and/or Lead from an Arsenic-containing ore, concentrate or tailings characterized in that the extraction is carried by roasting in the presence of a calcium-containing mat...  
WO/2018/089287A1
A method of processing cathode ray tube (CRT) glass with waste glass into a pozzolanic mixture includes, receiving CRT glass aggregate, pulverizing the CRT glass aggregate forming an intermediate CRT glass product, fine grinding the inte...  
WO/2018/082516A1
A method for comprehensive recovery of silver-containing lead slag, mainly comprising the following steps: impurity removal, deleading, reduction and filtration, lead dissolving, hot filtration, quenching filtration, cleaning, thermal de...  
WO/2017/064735A8
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/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/2016/178073A3
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/2016/198976A1
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/2016/178073A2
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/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/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/2014/154160A1
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...  

Matches 1 - 50 out of 1,474