| Patents for C22B 19 - Obtaining zinc or zinc oxide (2,969) |
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| 11/28/2012 | CN102796868A Production process for directly leaching zinc from zinc sulfide concentrate |
| 11/28/2012 | CN102031366B Extractive preparation method of high-purity zinc oxide |
| 11/21/2012 | CN102787237A Process for recovering iron, copper, zinc, and lead in copper tailing by leaching |
| 11/21/2012 | CN102786192A Electroplating sludge resource recovery process |
| 11/14/2012 | CN102781566A Reactor and a method of purifying a process solution |
| 11/14/2012 | CN102776385A Waste zinc slag recovery unit |
| 11/14/2012 | CN102776384A Method for extracting zinc from non-ferrous metal waste residue |
| 11/14/2012 | CN102776377A Method for conducting sulfur fixation treatment on lead-contained waste residues to recover valuable metal by side-blown smelting furnace |
| 11/14/2012 | CN102776376A Method for recovering valuable metal from waste residue containing lead and zinc through wet-fire combination process |
| 11/14/2012 | CN102776374A Treatment method of nickel-cadmium slag |
| 11/14/2012 | CN102776368A Lead and zinc tailing recycling method |
| 11/13/2012 | US8308844 Method of reduction treatment of metal oxides or steelmaking waste and method of concentrating and recovering zinc and/or lead |
| 11/08/2012 | WO2012150984A2 Compositions and methods of using a ketoxime in a metal solvent extraction reagent |
| 11/07/2012 | CN102766768A Method for separating valuable metal from zinc smelting acid leaching slags |
| 11/07/2012 | CN102766718A Method for producing sponge iron and zinc-rich materials by blast furnace zinc-containing ash |
| 11/07/2012 | CN102011001B Feeding device and method for cadmium-removing boiling purification tank system |
| 10/30/2012 | US8298316 Method for producing pig iron |
| 10/24/2012 | CN202499889U Treatment device for pressure-leached concentrated sulfuric acid and electrolytic waste liquid in zinc hydrometallurgy production |
| 10/24/2012 | CN202499888U Discharging device for leached ore solution in zinc sulfide concentrating process of pressurized acid leaching treatment |
| 10/24/2012 | CN102747229A Method for separating and recycling valuable metals in powder rich in multiple metals of waste circuit board |
| 10/24/2012 | CN102747226A Method for treating zinc hydrometallurgy waste residue by using alkali ammonium sulfur coupling method |
| 10/24/2012 | CN102102148B Recycling method of indium raffinate |
| 10/23/2012 | US8293196 Additives for mercury oxidation in coal-fired power plants |
| 10/18/2012 | WO2012140284A1 Hydrometallurgical method for the recovery of zinc in a sulphur medium from sulphured zinc concentrates |
| 10/18/2012 | CA2813860A1 Hydrometallurgical method for recovery of zinc in sulphuric medium starting from sulphidic zinc concentrates |
| 10/17/2012 | CN102732731A Method for extracting valuable metals and refining zinc sulphate monohydrate from zinc-containing waste material |
| 10/17/2012 | CN102732723A Waste acid addition controlling method of zinc wet smelting cobalt-removing purifying process employing arsenic salt |
| 10/17/2012 | CN102730271A Container for reducing solid sludge deposition and zinc powder-replacing and cadmium-removing device |
| 10/16/2012 | CA2536142C Iron oxide precipitation from acidic iron salt solutions |
| 10/10/2012 | CN102719675A Method for comprehensively recovering zinc, lead and silver from waste residues generated in zinc smelting |
| 10/10/2012 | CN102719668A Technology for extracting zinc, lead and silver step by step by processing zinc-leached residues by full wet process |
| 10/10/2012 | CN102716657A Zinc oxide desulfurization method applicable to zinc smelting system |
| 10/03/2012 | EP2504459A1 Method for the removal of chloride from zinc sulphate solution |
| 10/03/2012 | CN102703701A Method for treating cupric oxide or zinc oxide ores by adopting agitation ammonia leaching and infiltration basin ammonia leaching in combination |
| 10/03/2012 | CN102703694A Method for treating low-grade zinc oxide ores by wet method |
| 10/03/2012 | CN102051490B Novel method for recovering silver in high-iron sphalerite |
| 10/03/2012 | CN102029398B Preparation method of high-purity zinc powder |
| 09/26/2012 | CN102690945A Method for recycling low-grade lead and zinc in pyrite cinder |
| 09/19/2012 | CN102676879A Alloy zinc powder for zinc hydrometallurgy using antimonic salt to purify and remove combat and preparation method thereof |
| 09/19/2012 | CN102676845A Filter residue obtained after purifying zinc liquid and preparation method of filter residue |
| 09/19/2012 | CN102676833A High grade cobalt sulfonate slag and production process thereof |
| 09/19/2012 | CN102676819A Alloy zinc powder for zinc hydrometallurgy to purify and remove combat and preparation method thereof |
| 09/19/2012 | CN102676816A Method for treating zinc sulfate leach liquor |
| 09/19/2012 | CN102676805A Low grade zinc concentrate associated lead and silver recovery process |
| 09/12/2012 | CN102660690A Method for recovering valuable metal from zinc hydrometallurgy high acid leach residue |
| 09/12/2012 | CN102660681A Liquid zinc purification process and zinc powder displacement method in liquid zinc purification |
| 09/12/2012 | CN101580901B Method for refining zinc by using slag containing zinc |
| 09/05/2012 | EP2494082A2 Method and apparatus for condensing metal and other vapours |
| 09/05/2012 | CN202415655U Tilting rotary device |
| 09/05/2012 | CN202415654U Distillation furnace for preparing high-purity zinc products directly by hot-galvanized slags |
| 09/05/2012 | CN202415653U Smelting device containing antimony, zinc and lead concentrates |
| 09/05/2012 | CN101818252B Non-volatile method for extracting zinc, iron and indium from solution of zinc, iron and indium |
| 08/30/2012 | US20120219478 Methods Of Metal Extraction From Ammoniacal Solutions Using Oximes |
| 08/30/2012 | US20120219476 Methods Of Metal Extraction Using Oximes |
| 08/30/2012 | US20120219475 Compositions and Methods of Using a Ketoxime in a Metal Solvent Extraction Reagent |
| 08/30/2012 | US20120219474 Metal Solvent Extraction Reagents And Use Thereof |
| 08/29/2012 | CN202398815U Double-channel condenser for zinc powder production |
| 08/29/2012 | CN202398813U Zinc powder collecting device |
| 08/29/2012 | CN202398812U Zinc powder collecting device |
| 08/29/2012 | CN102649998A Method for separating and enriching copper, cadmium and zinc in copper and cadmium sediment |
| 08/29/2012 | CN101948959B Slag-forming agent for fusion casting of environment-friendly zinc and zinc alloy |
| 08/29/2012 | CN101638726B Method for harmlessly treating precipitation slag of acid production wastewater by using Ausmelt copper smelting furnace |
| 08/29/2012 | CN101410538B Method for recycling steelmaking dust |
| 08/22/2012 | CN102648298A Method for the removal of chloride from zinc sulphate solution |
| 08/22/2012 | CN102643978A Method for inhibiting generation of ferrous oxide in high iron zinc calcine reduction roasting process by utilizing partial pressure of CO2 |
| 08/22/2012 | CN102011006B Method for performing vacuum separation and purification on coating-containing zinc alloy |
| 08/15/2012 | CN102634676A Method for improving quality of low-grade zinc oxide and removing fluorine, chlorine and arsenic in low-grade zinc oxide by reducing and roasting in rotary kiln |
| 08/15/2012 | CN101994005B Method for purifying zinc sulfate solution and removing cobalt by using arsenic ash lixivium |
| 08/09/2012 | WO2012103571A1 Precipitation of zinc from solution |
| 08/09/2012 | CA2825228A1 Precipitation of zinc from solution |
| 08/08/2012 | EP2484786A1 Method for producing briquettes, method for producing reduced metal, and method for separating zinc or lead |
| 08/08/2012 | EP2483458A1 Acidic dezincification |
| 08/08/2012 | EP2130947B1 Method of recovering valuable metal from scrap containing conductive oxide |
| 08/08/2012 | CN102628100A Device and method for extracting zinc through acid leaching by using acid cyclically |
| 08/01/2012 | EP2324135B1 Method and plant for the production of zinc dust |
| 08/01/2012 | CN202360832U Automatic relief valve for zinc-refining electric furnace |
| 08/01/2012 | CN102618725A Method for extracting amphoteric heavy metal by adopting incineration fly ash as low-grade heavy metal |
| 08/01/2012 | CN102618721A Method for extracting germanium, indium and zinc from high iron, silicon and manganese materials containing germanium, indium and zinc |
| 08/01/2012 | CN102618719A Method for directly leaching zinc and recovering gallium, germanium and indium from zinc sulfide concentrate |
| 07/26/2012 | US20120186395 Method for producing briquettes, method for producing reduced metal, and method for separating zinc or lead |
| 07/25/2012 | CN102605194A Preparation method of high purity zinc by vacuum distillation |
| 07/25/2012 | CN102605181A Method for removing impurities from secondary zinc materials |
| 07/25/2012 | CN102605180A Method for treating zinc sulfide concentrate powder |
| 07/25/2012 | CN101886176B Method for reducing, chloridizing, oxidizing and recovering iron, tin, lead and zinc in waste magnetic separation dreg in rotary kiln without pelletizing |
| 07/18/2012 | CN102597279A Method and apparatus for condensing metal and other vapours |
| 07/18/2012 | CN102597278A Selective leach recovery of minerals from composite ores |
| 07/18/2012 | CN102586622A Method for producing electrolytic zinc by comprehensively recycling high-chlorine high-fluorine lead and antimony smelting waste residue |
| 07/18/2012 | CN102586621A Method and device for removing sulfur and fluorine as well as chlorine and by zinc oxide serous fluid |
| 07/18/2012 | CN102586601A Method for removing iron by utilizing autoclave during zinc hydrometallurgy production |
| 07/18/2012 | CN102586599A Method for recovering valued metals from zinc anode sludge |
| 07/18/2012 | CN102586597A Pressure leaching method of zinc sulfide concentrate |
| 07/18/2012 | CN102586596A Heat exchange device for leachate in pressure acid leaching treatment process of zinc sulfide concentrate |
| 07/18/2012 | CN102583598A Cycle production method for recovering zinc from beneficiation wastewater of high leaching slag |
| 07/18/2012 | CN102140580B Multi-metal recycling method of electric furnace tin-smelting dust |
| 07/18/2012 | CN101818264B Method for treating zinc-iron-containing dust and sludge |
| 07/18/2012 | CN101565780B Smelting method of polymetallic lead-zinc sulfide ore |
| 07/17/2012 | CA2518250C Method for removing thallium from a zinc-containing solution |
| 07/12/2012 | US20120177551 Selective leach recovery of minerals from composite ores |
| 07/12/2012 | US20120175307 Multi-layered macromolecules and methods for their use |
| 07/11/2012 | CN202322953U 大型氧压浸出高压釜氧气流量检测装置 Large oxygen pressure leaching autoclave oxygen flow detection device |