| Patents for C22B 19 - Obtaining zinc or zinc oxide (2,969) |
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| 06/30/2010 | CN101760632A Method for recovering zinc from zinc sulfate solution |
| 06/30/2010 | CN101760613A Method for leaching zinc-containing ores |
| 06/30/2010 | CN101760612A Method for recovering bismuth from secondary zinc oxide slag |
| 06/23/2010 | CN101748289A Neutral leaching method of zinc metallurgy in wet method |
| 06/23/2010 | CN101748288A Rinsing method for filter pressing slag cakes in producing process of zinc metallurgy in wet method |
| 06/23/2010 | CN101748280A Process for reclaiming zinc in steel-making dust of waste galvanized plate |
| 06/23/2010 | CN101307383B Process for leaching out zinc in fluosolids roasting soot of zinc concentrate by bacteria |
| 06/16/2010 | CN101736166A Method for extracting zinc from refractory zinc core in hydrometallurgy by dispergator |
| 06/16/2010 | CN101734686A High value-added greening comprehensive utilization method for medium and low-grade zinc oxide ores |
| 06/10/2010 | WO2010064149A2 System and method for wastewater treatment |
| 06/10/2010 | WO2010064143A2 System and method for wastewater treatment |
| 06/10/2010 | CA2744994A1 System and method for wastewater treatment |
| 06/10/2010 | CA2744907A1 System and method for wastewater treatment |
| 06/09/2010 | EP2194350A1 Modified induction furnace and method for removing zinc-containing metallurgical waste, with recovery of the metals therefrom |
| 06/02/2010 | CN201497341U Spelter smelting kiln |
| 06/02/2010 | CN1938436B Recovery of metals from oxidised metalliferous materials |
| 05/27/2010 | US20100126312 Direct smelting of zinc bearing compounds to produce metallic zinc |
| 05/26/2010 | CN201485493U Device for extracting zinc |
| 05/26/2010 | CN1754971B Batchwise working-up recycling materials in a rotatable reactor |
| 05/26/2010 | CN1571853B Combination method for processing zinc silicate concentrate or mine and zinc sulphide calcined concentrate |
| 05/26/2010 | CN101715492A Direct smelting of zinc bearing compounds to produce metallic zinc |
| 05/26/2010 | CN101713031A Method for removing impurities by oxidation in process of zinc hydrometallurgy |
| 05/26/2010 | CN101713025A Method for wet separation of mixed solution containing nickel and zinc |
| 05/19/2010 | CN101709386A Method for producing zinc by use of high-silicon zinc oxide ore |
| 05/19/2010 | CN101709382A Recovery and comprehensive treatment process of valuable metals in zinciferous materials |
| 05/18/2010 | CA2468885C A method for precipitating iron from a zinc sulphate solution as hematite |
| 05/12/2010 | CN201459216U Cadmium tower with high cadmium-zinc condenser |
| 05/12/2010 | CN201459208U Middle leaching barrel of electrolytic zinc |
| 05/12/2010 | CN201455266U Transferred arc direct-current plasma zinc powder electric furnace |
| 05/12/2010 | CN101705370A Method for recovering valuable metal from ferro-aluminum slag and special horizontal vacuum furnace |
| 05/12/2010 | CN101705361A Zinc anti-oxygen modifier |
| 05/12/2010 | CN101705325A Method for producing sponge iron and recycling nonferrous metals simultaneously by utilizing metallurgy waste materials |
| 05/11/2010 | CA2348436C Sulfatisation process for metal extraction from sulfide ores |
| 05/05/2010 | CN201449136U Device for zinc metallurgy of electric-heating rotary kiln |
| 04/28/2010 | CN101698904A Method for extracting sulfide minerals of nonferrous metals and method for recycling sulfur in extracted filtered residues thereof |
| 04/21/2010 | CN201440037U Device for recovering valuable metal from zincy slag |
| 04/21/2010 | CN101078052B Method for synthetically reclaiming iron and non-ferrous metal from solid waste of iron and steel plant |
| 04/14/2010 | CN101492774B Zinc metallurgy apparatus and process |
| 04/13/2010 | CA2400854C Method for utilising steelworks dust |
| 04/08/2010 | WO2010037169A1 Process for extraction of mined material |
| 04/08/2010 | US20100086455 Metohd of producing oxide and power thus obtained |
| 04/01/2010 | WO2010034465A1 Method for the selective acidic dezincification of steel scrap |
| 03/31/2010 | EP2169081A1 Reduction treatment apparatus and method of reduction treatment |
| 03/25/2010 | WO2009136299A8 Chemical process for recovery of metals contained in industrial steelworks waste |
| 03/24/2010 | CN201429314Y Fuel gas horizontal vaporizing furnace |
| 03/24/2010 | CN101680054A Method for the valorisation of zinc- and sulphate-rich residue |
| 03/24/2010 | CN101680044A Reduction treatment apparatus and method of reduction treatment |
| 03/23/2010 | US7682581 removal of Cu from a concentrated chloride-containing ZnSO4 raw solution that is going to an electrolytic preparation of zinc, using chelating alkyl-silylated silica-based ion exchanger having polyamine group, comprising routing raws solution to an ion exchange stage; purifying copper free raw solution |
| 03/17/2010 | EP2163654A2 Method for reclaiming dust arising from metallurgy procedures and/or solid dust-form byproducts |
| 03/10/2010 | EP2160481A1 Method for the valorisation of zinc- and sulphate-rich residue |
| 03/10/2010 | CN101665879A Crude zinc smelting method and smelting kiln used thereby |
| 03/04/2010 | WO2010023691A1 Method for separation of zinc and extraction of iron values from iron ores with high concentration of zinc |
| 03/04/2010 | US20100050814 Recovery of Non-Ferrous Metals from By-Products of the Zinc and Lead Industry using Electric Smelting with Submerged Plasma |
| 02/24/2010 | CN100591783C Method for recovering zinc and lead from waste electrolytic anode mud |
| 02/18/2010 | WO2010019062A1 The procedure for obtaining metal concentrate from ore complex |
| 02/18/2010 | WO2009156662A3 Method for processing and recycling zinc-rich iron metallurgy side products |
| 02/16/2010 | CA2436111C Method for removing impurities from solvent extraction solutions |
| 02/16/2010 | CA2289965C Method for separation of metals from ore |
| 02/11/2010 | WO2010016020A2 Production of zinc dust |
| 02/10/2010 | CN201400712Y Zinc dust recovering and extracting device |
| 02/10/2010 | CN100588726C Zincium bayer process for processing zinc oxide material |
| 02/03/2010 | CN201395622Y Regeneration zinc saving device capable of on-line heating of zinc residue |
| 01/28/2010 | US20100018351 Recycling of solids in oxidative pressure leaching of metals using halide ions |
| 01/27/2010 | CN100584968C Method and device for washing wet-process zinc metallurgy output slag |
| 01/20/2010 | EP2144852A1 Method for producing zinc oxide powder and powder thus obtained |
| 01/14/2010 | WO2010005023A1 Briquette manufacturing method, reductive metal manufacturing method, and zinc or lead separation method |
| 01/14/2010 | CA2727581A1 Method for producing briquette, method for producing reduced metal, and method for separating zinc or lead |
| 01/12/2010 | US7645372 continuously adding lead aceate to the zinc sulfate solution so that the amount of lead is adjusted to be at least equivalent to the amount of thallium, and adding zinc powder to ZnSO4 solution to precipitate cadmium and thallium; removing thallium; and zinc particle self dissolve forming ZnSO4 |
| 01/05/2010 | US7641711 Metal vapour condensation and liquid metal withdrawal |
| 12/30/2009 | WO2009156662A2 Method for processing and recycling zinc-rich iron metallurgy side products |
| 12/30/2009 | WO2009155651A1 Iron precipitation |
| 12/30/2009 | WO2009136299A3 Chemical process for recovery of metals contained in industrial steelworks waste |
| 12/29/2009 | CA2362294C Treatment of metal sulphide concentrates by roasting and arc furnace smelt reduction |
| 12/23/2009 | CN201368671Y Furnace hearth spraying furnace housing integration structure |
| 12/23/2009 | CN201368665Y Ring-shaped reduction furnace with non-material-leakage bottom |
| 12/23/2009 | CN201367457Y Sprinkling furnace casing device for converting area of fuming furnace |
| 12/23/2009 | CN101608865A Method for saving energy and prolonging service life of kiln lining of zinc volatilization rotary kiln |
| 12/23/2009 | CN101608266A Cleaning and dust collecting method of volatilized zinc oxide and device thereof |
| 12/23/2009 | CN101608265A Recovering process of associated metal zinc in gold finished ore |
| 12/23/2009 | CN100572573C Method for recycling copper from clean melt cinder of wet-process zinc metallurgy |
| 12/23/2009 | CN100572569C Method for recovery of zinc by countercurrent leaching |
| 12/15/2009 | CA2507673C Batchwise working-up recycling materials in a rotatable reactor |
| 12/09/2009 | EP2130947A1 Method of recovering valuable metal from scrap containing conductive oxide |
| 12/09/2009 | CN101597695A Method for smelting zinc by electric heating rotary kiln |
| 12/09/2009 | CN101597169A Magnesia-alumina-chromia brick and production method thereof |
| 12/09/2009 | CN100567524C Process for the treatment of electric and other furnace dusts and residues containing zinc oxides and zinc ferrites |
| 12/03/2009 | WO2009145348A1 Method for manufacturing pig iron |
| 12/03/2009 | DE102008026011A1 Method for immobilizing heavy metals in slag from metallurgical plant, comprises adding acids such as quartz-, quartzite- and calzite containing buffer system to rock flour such as gabbro or grey rock for lowering pH-value of the slag |
| 12/02/2009 | CN101591735A Method for recovering zinc metal in leaching residue by combination of ion floatation and wet method |
| 12/02/2009 | CN101591733A Method for jarosite precipitation and deironization by pressure acid leaching of high-iron zinc-sulphide concentrate in kettle |
| 12/01/2009 | CA2353002C Heap bioleaching process for the extraction of zinc |
| 11/18/2009 | CN101580901A Method for refining zinc by using slag containing zinc |
| 11/12/2009 | WO2009136299A2 Chemical process for recovery of metals contained in industrial steelworks waste |
| 11/10/2009 | US7615100 Method for the precipation of silica in connection with zinc ore leaching |
| 10/29/2009 | WO2009131242A1 Process for production of direct-reduced iron |
| 10/29/2009 | WO2009129823A1 Production of calcium ferrite sintered products from iron residue materials containing zinc/lead for the recycling thereof |
| 10/28/2009 | CN101565780A Smelting method of polymetallic lead-zinc sulfide ore |
| 10/28/2009 | CN101565779A Method for producing zinc powder and reclaiming scattered metals indium and germanium by distilling aluminum hard zinc in vacuum |
| 10/28/2009 | CN101565777A Method capable of increasing extraction rate of zinc in ammoniacal liquid |
| 10/28/2009 | CN101565776A Method for eliminating extraction and emulsification of amine and phosphorus organic reagents |