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Matches 1 - 50 out of 2,779

Document Document Title
WO/2020/181607A1
A method for extracting ions from an ore solution, comprising the following steps: (1) after a P204 organic phase is subject to soda soap treatment, adding nickel sulfate therein for a nickel soap reaction, till sodium ions in the organi...  
WO/2020/149777A1
A method for treating ferric-iron based material comprising at least zinc and sulphur comprises smelting and heating (S10) of the ferric-iron based material and added flux forming a liquid slag. The flux comprises a refractory material a...  
WO/2020/118455A1
It is disclosed a chemical process for recovery of silver, copper, lead, cadmium, zinc and iron from a zinc and iron bearing feed material including electric arc furnace dust and spent pickle liquor. In the process, a feed solution prepa...  
WO/2020/107669A1
A method for recycling zinc by comprehensively utilizing steelmaking dust. Steelmaking dust is mixed with a reducing agent and an additive and is pressed into pellets, the pellets are fed into a vacuum carbon tube furnace to perform vacu...  
WO/2020/107122A1
A process for recovering zinc and associated value metals from zinc-bearing ores, concentrates and intermediates, especially from electric arc furnace dust (EAFD) and spent steel mill zinc pickle liquor (ZPL), comprising leaching the fee...  
WO/2020/107670A1
A method for concentrating iron by comprehensively utilizing steelmaking dust: steelmaking dust is mixed with a reducing agent, an additive and water, is pressed into balls which are dried and then baked in vacuum, and a volatile substan...  
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/2020/019777A1
Disclosed is a method for producing a zinc-containing complex or zinc oxide using a zinc-containing raw ore via an intermediate step for the synthesis of calcium zincate. The method for producing a zinc-containing complex using a zinc-co...  
WO/2020/021244A1
A method of providing an agglomerate, for example a pellet or a briquette, for use in iron- making and/or steel-making,is described. A mixture is provided by binding particles, including a ferrous material and a carbon material,using a b...  
WO/2020/019834A1
A mineral processing method for a low-grade zinc-containing raw ore, in particular, relating to a mineral processing method for a low-grade zinc-containing raw ore by a calcium zincate synthesis step. The method comprises a leaching step...  
WO/2020/019854A1
A method for producing zinc oxide by means of double leaching, comprising a primary leaching step, an optional purification step, a first precipitation step, a second precipitation step, a primary calcination step, a secondary leaching s...  
WO/2020/002697A1
Process for recovering non-ferrous metals from industrial mineral residues Process for recovering a non-ferrous metal from a first solid residue (11) comprising iron. The first solid residue (11) is mixed (10) with a second solid residue...  
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/2019/185863A1
The invention relates to a method for the recovery of zinc from zinc containing materials using a smelting apparatus for smelting a metalliferous feed material, wherein the smelting apparatus comprises a smelting vessel, a smelt cyclone ...  
WO/2019/178654A1
This patent application refers to a method and a modular plant for chemical and metallurgical processing of industrial waste, such as steel powders, filter dusts, sludges, insoluble residue originated from the extraction, sludges, drosse...  
WO/2019/157589A1
Methods and apparatuses for treating aluminum dross, zinc dross, or metal-rich residues. These methods comprise heating aluminum dross, zinc dross or metal-rich residues in an induction furnace to induce electrical current in at least on...  
WO/2019/150005A1
The present invention relates to a process for processing a leach solution of black mass of spent alkaline batteries which leach solution (14) includes metals dissolved to an acidic solution and in which process one or more elements (49)...  
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/2019/122985A1
A method for the treatment of sludge containing iron, said method comprising - a leaching step wherein the sludge containing iron is mixed with an acid and an oxidation agent so as to create an oxidized leachate, and - a step of precipit...  
WO/2019/123138A1
A method for the treatment of sludge containing iron, said method comprising - a leaching step wherein the sludge containing iron is mixed with an acid and an oxidation agent so as to create an oxidized leachate, and - a step of precipit...  
WO/2019/113652A1
Controlled crystallisation of zinc containing crystals from a zinc containing purified ammonia – ammonium chloride liquor where the liquor used has a composition of 0.3 to 1M/l Zinc, 1 to 5M/l NH3 and 0.5 to 2.5M/l NH4Cl and is obtaine...  
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/2019/071791A1
A method for smelting reduction production of zinc smelting slag. The method comprises the following steps: S1, adding zinc smelting slag to a heat preservation device or a smelting reaction device from which slag may flow out, adding ca...  
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/2019/071792A1
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/2019/055457A1
Described herein are biological devices and methods for using the same to produce oxidized zinc. The biological devices include microbial cells transformed with a DNA construct containing genes for producing a zinc-related protein, an al...  
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/2019/043244A1
A process is described for the recovery of the chemical components of the "black paste" resulting from the opening of dead alkaline and zinc-carbon batteries.  
WO/2019/035446A1
Provided is a metal which is one of tin, silver, copper, zinc, or indium, and has low α-ray emission, wherein the α-ray emission of the metal after being heated in air at 100°C for 6 hours is 0.002 cph/cm2 or less. A metal selected fr...  
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/2018/228073A1
An anode copper production method and device. The production method comprises the following steps: conveying copper matte to a copper production furnace (20), and injecting oxygen-enriched air into the copper production furnace (20) to p...  
WO/2018/228075A1
A method and system for short-process copper smelting. Copper smelting equipment employed in the method comprise a smelting furnace (10), a copper forging furnace (20), a CR furnace (30), a first flow groove, and a second flow groove. Th...  
WO/2018/184686A1
The invention relates to a method for removing fluoride from a zinc-containing solution or suspension, in particular a zinc sulfate solution, to a defluoridated zinc sulfate solution obtained by such a method, to the use thereof, and to ...  
WO/2018/109283A1
The present invention relates to a process for separating metals using a series of precipitations from waste materials of the zinc or steel industry, or both. The method is characterized in carrying out the precipitations using hydroxide...  
WO/2018/100539A1
A method of controlling iron in a hydrometallurgical process is disclosed. The method may comprise the steps of: leaching (14, 114) a feed slurry (2, 102); forming a pregnant leach solution (12a, 12b; 112a, 112b); removing a first leach ...  
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/2018/081856A1
A process for treatment of zinc-containing waste materials includes the steps of: (a) Combining the zinc-containing waste material with iron chloride into a solid, pelletised form which includes iron oxide, zinc oxide and iron chloride, ...  
WO/2017/070102A8
Methods and systems for removing polar compounds from a metal-containing solution. According to various example aspects, methods and systems for removing hydrolysis byproducts and other polar compounds from a metal-loaded organic solutio...  
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/2018/007297A1
The present disclosure provides a process for selectively separating a first heavy metal such as copper from a liquid medium containing at least the first heavy metal in dissolved form, by: (a) contacting the liquid medium with a solid s...  
WO/2017/193725A1
Provided are a system and method for treating a cadmium-containing solution. The system comprises: a cadmium-containing solution storage apparatus (100); a first conveying pipe (200) connected to the cadmium-containing solution storage a...  
WO/2017/193724A1
Provided are a system and method for treating a copper-containing solution. The system comprises: a copper-containing solution storage apparatus (100); a first conveying pipe (200) connected to the copper-containing solution storage appa...  
WO/2017/187973A1
[Problem] To provide: a method for processing iron and steel dust, which is more advantageous than a Waelz method in terms of energy and economy; a method for producing zinc; and a method for producing a staring material for iron and ste...  
WO/2017/129816A1
The invention relates to a method for the carbothermal reduction of zinc oxide to zinc, comprising the following steps: feeding zinc oxide and coal into a furnace as reactants, reducing the zinc oxide to liquid zinc melt (20) by using th...  

Matches 1 - 50 out of 2,779