| Patents for C22B 19 - Obtaining zinc or zinc oxide (2,969) |
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| 06/08/2011 | CN101798639B Method for recovering indium from indium-containing neutralized dregs directly leached from zinc concentrate |
| 06/08/2011 | CN101570372B Method for purifying electroplating wastewater and comprehensively utilizing resources |
| 06/08/2011 | CN101565779B Method for producing zinc powder and reclaiming scattered metals indium and germanium by distilling aluminum hard zinc in vacuum |
| 05/26/2011 | WO2011061408A1 Method for the removal of chloride from zinc sulphate solution |
| 05/26/2011 | CA2780322A1 Method for the removal of chloride from zinc sulphate solution |
| 05/25/2011 | EP2324135A2 Method and plant for the production of zinc dust |
| 05/25/2011 | CN102071325A Neutralization process for wet-process zinc extraction high-acid-leaching low-pollution jarosite |
| 05/25/2011 | CN102071318A Purification method of zinc sulfate leaching liquid |
| 05/25/2011 | CN102071311A Multisection acid leaching, multistage countercurrent washing and filter pressing integrated system and method |
| 05/25/2011 | CN101503760B Method for extracting zinc from zinc oxide ore ammonia leaching solution |
| 05/19/2011 | US20110113926 Method of reduction treatment of metal oxides or steelmaking waste and method of concentrating and recovering zinc and/or lead |
| 05/18/2011 | CN102066589A Iron precipitation |
| 05/18/2011 | CN102061389A Method for recycling arsenium and enriching heavy metals in arsenium-containing metallurgical sludge |
| 05/18/2011 | CN101713031B Method for removing impurities by oxidation in process of zinc hydrometallurgy |
| 05/11/2011 | EP2319946A1 Dezincing apparatus and dezincing method |
| 05/11/2011 | CN102051490A Novel method for recovering silver in high-iron sphalerite |
| 05/11/2011 | CN102051472A Method for treating enrichment set in poor pin and extracting tin and other color metals |
| 05/11/2011 | CN101643857B Comprehensive recovery method of complex polymetal sulphide ore containing copper, lead and zinc |
| 05/05/2011 | WO2011051674A2 Method and apparatus for condensing metal and other vapours |
| 05/05/2011 | CA2778396A1 Method and apparatus for condensing metal and other vapours |
| 05/04/2011 | CN102046817A Method for manufacturing pig iron |
| 05/04/2011 | CN102041385A Cobalt removal method for poor cadmium solution in wet-method zinc refining system |
| 05/04/2011 | CN101565777B Method for increasing extraction rate of zinc in ammoniacal liquid |
| 05/04/2011 | CN101560601B Method for improving zinc extraction yield in ammonia solution |
| 05/04/2011 | CN101560600B Method for effectively improving effect of extracting zinc in ammonia solution |
| 05/04/2011 | CN101386913B Method for recovering zinc oxide in Zn-containing dust treatment by rotary hearth furnace |
| 04/27/2011 | EP2314725A1 Method for producing large diameter ingots of nickel base alloys |
| 04/27/2011 | EP2314724A1 Method for producing large diameter ingots of nickel base alloys |
| 04/27/2011 | CN102031370A Arsenic salt purified cobalt slag seed crystal, and purification method and application thereof |
| 04/27/2011 | CN102031366A Extractive preparation method of high-purity zinc oxide |
| 04/27/2011 | CN102029398A Preparation method of high-purity zinc powder |
| 04/26/2011 | CA2387633C Chloride assisted hydrometallurgical extraction of metals |
| 04/20/2011 | CN102021339A Method for eliminating cobalt redissolution in haydrometallurgy of zinc |
| 04/20/2011 | CN102021336A Method for separating zinc, fluorine and chlorine from fluorine- and chlorine-containing zinc sulfate solution |
| 04/20/2011 | CN102021317A Oxidizing roasting process by blending high fluorine chlorine zinc oxide complex material |
| 04/20/2011 | CN101812598B Method for simultaneously smelting zinc dipping slag and zinc kiln slag by using blast furnace |
| 04/20/2011 | CN101665879B Crude zinc smelting method and smelting kiln used thereby |
| 04/13/2011 | CN201793692U Zinc concentrate smelting device |
| 04/13/2011 | CN201793684U Adjusting tank |
| 04/13/2011 | CN102016080A Process for production of direct-reduced iron |
| 04/13/2011 | CN102011012A Method for preparing lead ingots, zinc powder and mixed iron slag from waste residues in lithopone production |
| 04/13/2011 | CN102011009A Method for removing zinc from zinc hydrometallurgy acidic leaching residue flotation silver concentrate |
| 04/13/2011 | CN102011006A Method for performing vacuum separation and purification on coating-containing zinc alloy |
| 04/13/2011 | CN102011002A Arsenic salt purifying and cadmium-removing method and device for preventing cadmium redissolution in zinc hydrometallurgy process |
| 04/13/2011 | CN102011001A Feeding device and method for cadmium-removing boiling purification tank system |
| 04/13/2011 | CN102010997A Method for removing organic matters in zinc sulfate solution in zinc hydrometallurgy |
| 04/13/2011 | CN102010995A Method for increasing copper recovery rate in zinc hydrometallurgy process |
| 04/13/2011 | CN102010994A Iron depositing method of high acid and high iron solution goethite during zinc hydrometallurgy |
| 04/13/2011 | CN102010989A Purification device of zinc sulfate solution |
| 04/07/2011 | WO2011040344A1 Method for producing briquettes, method for producing reduced metal, and method for separating zinc or lead |
| 04/07/2011 | WO2011038746A1 Acidic dezincification |
| 04/07/2011 | US20110079109 Method Of Operating A Converter And Apparatus For Carrying Out The Method |
| 04/07/2011 | CA2773237A1 Method for producing briquettes, method for producing reduced metal, and method for separating zinc or lead |
| 04/06/2011 | EP2304064A2 Method for processing and recycling zinc-rich iron metallurgy side products |
| 04/06/2011 | CN102002602A Method for increasing recovery rates of lead and zinc during lead-zinc sulfide ore dressing-smelting joint application |
| 03/30/2011 | CN101994010A Preparation method of arsenious ash leaching liquid |
| 03/30/2011 | CN101994008A Novel process for separating zinc and cobalt from nickel and cobalt slag from zinc smelting and purification |
| 03/30/2011 | CN101994005A Method for purifying zinc sulfate solution and removing cobalt by using arsenic ash lixivium |
| 03/30/2011 | CN101629246B Zinc smelting process by neutralization and hydrolysis iron removal method |
| 03/30/2011 | CN101629245B Zinc hydrometallurgical process of iron removal by neutralization hydrolysis |
| 03/23/2011 | EP2298941A1 Briquette manufacturing method, reductive metal manufacturing method, and zinc or lead separation method |
| 03/23/2011 | CN101988155A Composite additive for purifying and removing cobalt in zinc hydrometallurgy |
| 03/23/2011 | CN101619399B Method for selectively leaching voluble metal in copper refinery cinder |
| 03/16/2011 | EP2294232A1 Iron precipitation |
| 03/16/2011 | CN201765020U Detection device for autoclave material level |
| 03/03/2011 | WO2011024244A1 Dezincing apparatus and dezincing method |
| 03/02/2011 | CN101982551A Method for resource recovery of valuable metals on waste plasma display panel (PDP) glass by utilizing microorganisms |
| 02/24/2011 | WO2011020181A1 Selective leach recovery of minerals from composite ores |
| 02/24/2011 | US20110042868 Process and Apparatus for Recovery of Non-Ferrous Metals from Zinc Residues |
| 02/24/2011 | CA2770367A1 Selective leach recovery of minerals from composite ores |
| 02/23/2011 | CN101981233A Process for recovery of valuable metals from scrap IZO |
| 02/23/2011 | CN101979684A Process for recovering zinc from hot-dip coating zinc ash |
| 02/19/2011 | CA2676273A1 Leach recovery of minerals from composite carbonate/sulfide ores |
| 02/16/2011 | CN101974696A Zinc ash reducing agent for hot-dip galvanizing |
| 02/16/2011 | CN101974683A Method for producing middle supernatant solution by carrying out two-step pressure acid leaching on high-iron zinc sulfide concentrate |
| 02/16/2011 | CN101974682A Method for extracting electrolytic zinc from oxide material containing less than 20% of zinc by using waste acid in titanium white plant |
| 02/16/2011 | CN101709382B Recovery and comprehensive treatment process of valuable metals in zinciferous materials |
| 02/10/2011 | WO2011016415A1 Liquid supply apparatus |
| 02/09/2011 | CN101970699A Method for separation of zinc and extraction of iron values from iron ores with high concentration of zinc |
| 02/09/2011 | CN101407862B Method for previously removing copper from copper-containing solution |
| 02/09/2011 | CN101191150B Comprehensive utilization method for blast furnace gas mud and combustion furnace for processing |
| 02/08/2011 | CA2429889C Method for the hydrolytic precitpitation of iron |
| 02/02/2011 | CN201729861U Lead and zinc integrated smelting furnace |
| 02/02/2011 | CN101705361B Zinc anti-oxygen modifier |
| 02/02/2011 | CN101372728B Apparatus for recovery of non-ferrous metals from zinc residues |
| 02/01/2011 | US7879132 using as a material a powder containing metal oxides and containing alkali metals and halogen elements, mixing such material with water to produce a slurry, then dehydrating and charging the dehydrated material into a rotary hearth type reduction furnace for reduction |
| 01/26/2011 | CN101956074A Method for removing tin in zinc and alkali solution |
| 01/19/2011 | CN101948959A Slag-forming agent for fusion casting of environment-friendly zinc and zinc alloy |
| 01/12/2011 | CN201706889U Inductive electric heating zinc re-distillation furnace |
| 01/12/2011 | CN101946027A Method of recovering valuable metals from izo scrap |
| 01/12/2011 | CN101946026A Method of recovering valuable metals from izo scrap |
| 01/12/2011 | CN101942564A Process for producing pure cadmium by continuous reduction and distillation of zinc cadmium slag and sponge cadmium |
| 01/12/2011 | CN101942560A Method for directly leaching low-grade germanic lead oxide and zinc oxide ores |
| 01/12/2011 | CN101591735B Method for recovering zinc metal in leaching residue by combination of ion floatation and wet method |
| 01/11/2011 | CA2390361C Recovery of metals from ore |
| 01/05/2011 | CN101935765A Bottom blowing fuming zinc-extracting method for material containing zinc |
| 01/05/2011 | CN101629244B Method for regenerating metallic aluminum and zinc by using scrap aluminum-zinc-iron-silicon alloy |
| 01/05/2011 | CN101591733B Method for jarosite precipitation and deironization by pressure acid leaching of high-iron zinc-sulphide concentrate in kettle |
| 01/04/2011 | CA2503021C The non-pollution process of extracting arsenic in vacuum and the equipment thereof |
| 01/04/2011 | CA2503016C The process for extracting gold in arsenic-containing concentrate of gold and the equipment thereof |