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WO/2024/050790A1 |
A method for recovering lead from CRT lead-containing glass by means of a fuming furnace. The method comprises the following steps: 1) crushing lead-containing glass; 2) material mixing, which involves: mixing the crushed CRT lead-contai...
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WO/2024/046656A1 |
The invention relates to a process for the selective heavy metal removal from iron- and/or steelmaking flue dust, the process comprising the steps of: preparing a feedstock (FS) by blending or mixing a chloride precursor material (CPM) a...
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WO/2024/018232A1 |
A method of recycling lead-containing waste, the method comprising: providing a slurry of a lead-containing waste, the lead-containing waste comprising lead sulphate; passing the slurry through a comminution unit while controlling the pH...
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WO/2023/202389A1 |
The present invention relates to a lead halide recovery method for a perovskite solar cell, and a lead halide utilization method. The lead halide recovery method comprises: putting a perovskite solar cell to be recovered into a heating d...
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WO/2023/165540A1 |
A vertical vacuum spiral crystallization apparatus and method for continuously separating a binary eutectic alloy. The apparatus comprises a vertical furnace body, a feeding system, a heating system, a circulating water cooling system, a...
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WO/2023/164279A1 |
A method of recovering lead, antimony tin from lead acid batteries, lead bearing scrap and other lead bearing materials which includes smelting lead bearing materials in a reverb furnace to recover metallic lead; leaching the resultant s...
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WO/2023/121540A1 |
Reduction reactor and process of effecting reduction of iron ore material to reduced iron material. The process comprising to feed (101) iron ore material into a reduction reactor (1) at a top portion (1a) thereof, creating a gravitation...
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WO/2023/061389A1 |
Provided is a recovery method for valuable metal in copper anode mud, which belongs to the technical field of comprehensive treatment of copper anode mud. In the recovery method of the present invention, selenium, copper, tellurium, arse...
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WO/2023/030165A1 |
The present invention relates to a method for co-processing a copper-smelting arsenic sulfide slag and an arsenic-containing soot. The method comprises atmospheric pressure acid leaching an arsenic-containing soot to allow copper, zinc, ...
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WO/2023/005810A1 |
The present invention relates to the technical field of non-ferrous metal pyrometallurgy, and specifically relates to a method for separating and purifying high-antimony crude tin. According to the present invention, vacuum gasification ...
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WO/2022/137585A1 |
A method for recovering lead from copper smelting dust according to the present invention comprises: an alkali leaching step for leaching, with an alkali solution, lead which is contained in copper smelting dust; a step for solid-liquid ...
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WO/2022/104427A1 |
A process for recovery of one or more target metals, selected from precious metals and chalcophile metals as respectively herein defined, from materials containing precious and/or chalcophile metal/s, said process including: (i) leaching...
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WO/2022/073082A1 |
The invention will find application in the field of waste management and in particular in recovery of process waste obtained from lead-acid recycling. The technology scheme simplified and use energy-efficient processes. After the executi...
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WO/2022/057882A1 |
Disclosed is a resource recycling method for a copper smelting residue, comprising the following steps: (1) mixing a copper blowing residue, a vulcanizing agent 1, a residue type modifier 1 and a reducing agent 1, smelting same to obtain...
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WO/2022/052911A1 |
A blast furnace recovery and smelting apparatus and method for lead-containing materials, which belong to the technical field of environmental protection. The apparatus comprises a blast furnace, a powder storage tank, a mixer, a coal in...
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WO/2022/037781A1 |
A method for separating zinc from an industry product (110) is described, the method comprising: i) providing the industry product (110) which comprises oxidized zinc (102); ii) heating the industry product (110) so that the industry pro...
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WO/2022/018489A1 |
A procedure for leaching copper and lead from metallurgical residues of smelting powders which have been subjected to a process of copper leaching and comprising copper, iron, lead, silicon, and optionally arsenic, antimony and bismuth, ...
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WO/2021/134385A1 |
An oxygen-enriched side blowing furnace smelting method for a secondary resource having arsenic and dispersed elements by adding ion and chlorinating agent respectively, comprising: adding a chlorinating agent accounting for 1-1.5% of th...
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WO/2021/126984A1 |
Method for removing arsenic mineral from a lead concentrate by reverse flotation with an ozone pre-treatment. The method comprises the steps of: receiving a slurry of the lead concentrate that has previously undergone flotation processes...
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WO/2021/028694A1 |
A process for recovering a metal in the form of a metal halide from a metal-containing source is described, the process comprising the steps of:- (i) forming a solid metal halide containing product by contacting the metal-containing sour...
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WO/2020/204796A1 |
Method for producing direct reduced metal material, comprising the steps: a) charging metal material to be reduced into a first furnace space (120) of a first furnace (220); b) evacuating an existing atmosphere from the first furnace spa...
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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...
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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...
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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 ...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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.
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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