Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 1 - 50 out of 2,735

Document Document Title
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...  
WO/2017/090784A1
The present invention relates to an eco-friendly zinc smelting method, and provides a method for treating zinc ferrite, the method comprising the steps of: generating a fumed metal oxide, sulfite offgas, and eco-friendly clean slag throu...  
WO/2017/078315A1
The present invention relates to a method for recovering valuable metals from valuable metal-containing target waste. An embodiment of the present invention proposes a method for recovering valuable metals from valuable metal-containing ...  
WO/2017/070102A1
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/2017/064735A1
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/2017/054057A1
A method for recovering zinc from an aqueous ammoniacal ammonium carbonate zinc solution, the method comprising the steps of: Contacting the aqueous ammoniacal ammonium carbonate zinc solution with an organic solution of a zinc extractan...  
WO/2017/031949A1
A method for leaching low-grade lead-zinc oxide ores by means of electrooxidation comprises the following steps: A, pulping: carrying out crushing and ball milling on the low-grade lead-zinc oxide ores, and adding water to mix the ores t...  
WO/2017/014204A1
With attention directed at the reduction treatment gas that contains metallic zinc vapor generated when reduced iron is manufactured from electric furnace dust that contains iron oxides and zinc oxide, the present invention addresses the...  
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/2016/162138A1
Method for working up zinc-containing dusts or grinding dusts, such as for example converter, arc-furnace, top-gas or sintering dusts from steel or high-grade steel production, wherein a) the dusts are mixed with a CaO carrier in order t...  
WO/2014/124494A9
A method of producing a controlled reactivity zinc oxide including the step of: heat treatment a zinc oxide powder or precursor thereof at a temperature of at least 450 °C.  
WO/2016/040244A3
An environmentally friendly (e.g. no acid, base, or cyanide) system and process for large scale extraction of metal ion into aerobic molten salt (or ionic liquid) and the electrodeposition of metal (e.g. copper, gold, silver, etc.) from ...  
WO/2016/081976A1
A split solvent extraction process for treating pregnant leach solution (PLS) from a heap leach process is described. The solvent extraction process comprises the steps of partitioning the heap leach process to produce two or more pregna...  
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/2016/000231A1
A method for processing a zinc oxychloride-containing secondary material comprises the following steps: 1) leaching a zinc oxychloride-containing secondary material I by using an acid solution; 2) selectively extracting zinc by using a P...  
WO/2015/192762A1
A ferric hydroxide-based raw material containing high value elements, an application thereof, and a preparation method therefor. The preparation method comprises preparing a ferric hydroxide-based raw material containing high value eleme...  
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...  

Matches 1 - 50 out of 2,735