Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 1 - 50 out of 1,513

Document Document Title
WO/2020/179943A1
The present invention relates to a method and an apparatus for recovering copper, bronze and lead by allowing methane gas to flow into a reactor and heat-treating a mixture of copper oxide, tin oxide and lead oxide under a temperature co...  
WO/2020/157165A1
Disclosed is a process for the production of a purified soft lead product, comprising a) a first distillation step (200) for distilling lead from a molten solder mixture (6) to produce as overhead a first concentrated lead stream (7) and...  
WO/2020/151771A1
An energy-saving, environmentally friendly recycled lead multi-chamber metal smelting furnace and processing method, relating to the technical field of recycled metal smelting. A furnace housing (8) is installed on a furnace base (4); a ...  
WO/2020/133210A1
Provided is a method for producing sodium sulfite by removing sulfur from sulfur-containing flue gas using industrial alkali residue containing arsenic, comprising, circulating and slurrying the industrial alkali residue containing arsen...  
WO/2020/132752A1
The present application relates to a modern plant that includes a method for obtaining commercial antimony trioxide (Sb2O3), arsenic trioxide (As2O3) and metal lead (Pb) from a mineral containing predominantly antimonite. The first step ...  
WO/2020/132751A1
The present application relates to a method for obtaining antimony trioxide (Sb2O3), arsenic trioxide (As2O3) and metal lead (Pb) from a mineral containing predominantly antimonite. The first step begins with a process of oxidative roast...  
WO/2020/110198A1
A method for producing lead is a method for producing lead using a lead paste having or not having grid lead or galena ore as a raw material, the method comprising bringing the raw material into contact with a solvent that contains, in a...  
WO/2020/103642A1
A device and method for treating heavy metal hazardous waste by means of vacuum chlorination roasting. The method comprises: drying, grinding and sieving heavy metal hazardous solid waste, adding a chlorinating agent or a chlorinating ag...  
WO/2020/065180A1
The invention relates to a method for producing x-ray very high purity lead-212 from an aqueous solution comprising thorium-228 and its descendants. Applications: manufacture of radiopharmaceuticals based on lead-212, which are useful in...  
WO/2020/057026A1
A method for recovering a bromide salt from a bromine-containing smelting soot, belonging to the technical field of recovery of bromide salt and valuable lead and zinc elements, and specifically relating to highly efficient separation an...  
WO/2020/057025A1
A method for separating and recovering bromine from circuit board incineration ash using a two-step process belonging to the field of comprehensive recovery of valuable elements from ash using full-wet processes. The method particularly ...  
WO/2020/044365A1
The present invention relates to a method of extraction of metals from printed circuit boards of electronic devices in an environmentally friendly and economical process. This is achieved by the use of a single acid. The main principle u...  
WO/2020/025970A1
This invention relates to a process for obtaining lead (Pb) and/or tin (Sn) from a lead- and/or tin-based material using a deep eutectic solvent.  
WO/2019/242607A1
A copper slag depletion device and method. The device comprises a copper slag depletion treatment furnace (10) and a wire feeding device (20), wherein the copper slag depletion treatment furnace (10) uses electrothermal or plasma heat as...  
WO/2019/223559A1
A selective antimony and arsenic removal and tin retaining agent for refining secondary crude lead, and a use method, relating to the field of refinement and impurity removal of secondary crude lead. The antimony and arsenic removal and ...  
WO/2019/223560A1
The present invention relates to the field of comprehensive recycling of waste lead-acid storage batteries, and provides a technique for producing a lead-calcium alloy using waste lead grids of waste lead-acid storage batteries, comprisi...  
WO/2019/215770A1
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...  
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...  

Matches 1 - 50 out of 1,513