| Patents for C22B 19 - Obtaining zinc or zinc oxide (2,969) |
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| 05/01/2013 | CN102146522B Second-generation crude zinc smelting kiln |
| 04/25/2013 | WO2013056348A1 Energy efficient salt-free recovery of metal from dross |
| 04/25/2013 | CA2852984A1 Energy efficient salt-free recovery of metal from dross |
| 04/24/2013 | CN103060576A Composite centrifugal purification method of zinc and zinc alloy melt |
| 04/24/2013 | CN103060553A Method for purifying zinc from zinc concentrate |
| 04/24/2013 | CN103060552A Method for extracting valuable metals from neutral leaching residue of zinc oxide |
| 04/24/2013 | CN102417984B Method for purifying zinc sulfate solution |
| 04/17/2013 | CN103045863A Method for pretreating indium-containing zinc oxide acid supernatant |
| 04/17/2013 | CN102312095B CRT (cathode ray tube) fluorescent powder processing method |
| 04/10/2013 | CN103031441A Recycling method for metallic elements in waste nickel-hydrogen batteries |
| 04/10/2013 | CN102605181B Method for removing impurities from secondary zinc materials |
| 04/03/2013 | CN103014372A Zinc smelting device for gas rotary kiln |
| 04/03/2013 | CN103014355A Multi-metal comprehensive recycling process for copper smelting ash |
| 04/03/2013 | CN103014350A Recycling method of zinc hypoxide |
| 04/03/2013 | CN103014346A Process method for separating zinc, iron and cobalt and nickel ore concentrates from cobalt and nickel slag |
| 04/03/2013 | CN103014344A Method for two-stage iron settlement in high-temperature peracid zinc leachate |
| 04/03/2013 | CN102345015B Method for removing thallium in process of producing refined cadmium with high-temperature dust generated by acid preparing system |
| 04/03/2013 | CN102181663B Method for producing zinc powder by treating zinc-containing miscellaneous material through electric furnace |
| 04/02/2013 | US8410013 Catalyst for treating exhaust gas |
| 03/28/2013 | WO2012140284A8 Hydrometallurgical method for the recovery of zinc in sulphuric medium starting from sulphudic zinc concentrates |
| 03/27/2013 | CN202830125U Recovery device of waste zinc slag |
| 03/27/2013 | CN102994776A Method for coproducing sulfuric acid, cement and zinc oxide powder by using low-grade zinc oxide ore and lead-zinc tailings |
| 03/27/2013 | CN102994765A Method for treating waste copper slag |
| 03/27/2013 | CN102994764A Process for recovering lead, zinc and cadmium in soot on recovery section in process of treating waste acid generated in lead smelting |
| 03/20/2013 | EP2569455A1 Chemical pretreatment and preheating of steel scrap |
| 03/20/2013 | CN202808915U Fuming furnace for processing zinc leaching residue |
| 03/20/2013 | CN102978418A Processing method of casting zinc dross |
| 03/20/2013 | CN102978411A Comprehensive recycling method for crude indium casting slag |
| 03/20/2013 | CN102071325B Neutralization process for wet-process zinc smelting high-acid-leaching low-pollution vanadium precipitation process |
| 03/14/2013 | WO2013036268A1 Process for purifying zinc oxide |
| 03/14/2013 | WO2013034049A1 Comprehensive recovery method for complex material containing arsenic and valuable metal slags |
| 03/14/2013 | CA2847833A1 Process for purifying zinc oxide |
| 03/13/2013 | CN102965499A Method for extracting valuable element in arsenic salt purification slag from zinc hydrometallurgy |
| 03/13/2013 | CN101831545B Alkali leaching method of zinc oxide mine |
| 03/12/2013 | CA2687755C Direct smelting of zinc bearing compounds to produce metallic zinc |
| 03/06/2013 | CN102952945A White high-alumina brick |
| 03/06/2013 | CN102952944A Acid-resistant, high temperature-resistant and high pressure-resistant earthenware brick for cylindrical shell entrance |
| 03/06/2013 | CN102952943A Acid-resistant, high temperature-resistant and high pressure-resistant earthenware brick for head entrance |
| 03/06/2013 | CN102952942A Method of utilizing medium-lower-grade zinc oxide ores as well as zinc oxide and lead oxide paragenic ores |
| 02/28/2013 | WO2012150984A3 Compositions and methods of using a ketoxime in a metal solvent extraction reagent |
| 02/27/2013 | CN102220480B Method for removing fluorine and chlorine from zinc oxide smoke dust by microwave roasting |
| 02/20/2013 | CN102168181B Horizontal type pressure leaching kettle and zinc sulfide concentrate leaching method using same |
| 02/13/2013 | CN102925706A Method for treating cobalt-nickel-copper hydrometallurgy wastewater residue |
| 02/13/2013 | CN102925702A Process for recovering copper and zinc and tin and lead by utilizing side blown converter at the bottom |
| 02/13/2013 | CN102925680A Method for controlling particle size of compressed-leached material of zinc sulfide concentrate |
| 02/13/2013 | CN101981233B Process for recovery of valuable metals from scrap IZO |
| 02/06/2013 | CN102912147A Process for recycling lead zinc, silver and iron from tailings after carrying out sulphur flotation on zinc oxygen pressure leaching slag |
| 02/06/2013 | CN102912138A Method of recycling zinc, manganese, lead and silver from zinc electrowinning anode mud |
| 02/06/2013 | CN102912133A Method for classifying and purifying heavy metals in electroplating sludge |
| 02/06/2013 | CN102191371B Method for separating iron and zinc in traditional zinc iron and zinc process |
| 01/31/2013 | US20130025412 Method for leaching zinc from a zinc ore |
| 01/30/2013 | CN102899505A Method for recovering zinc by using rotary kiln and device thereof |
| 01/30/2013 | CN102899502A Method for extracting indium-zinc and recovering tin from high tin high indium-zinc leaching residues |
| 01/30/2013 | CN102899490A Jetting self-suction type air catalytic oxidation method for iron and arsenic removal and device |
| 01/30/2013 | CN102108447B Technology for removing iron and arsenic from leaching solution of purification slag generated in zinc hydrometallurgy |
| 01/30/2013 | CN102031370B Arsenic salt purified cobalt slag seed crystal, and purification method and application thereof |
| 01/23/2013 | EP2547435A1 Reactor and a method of purifying a process solution |
| 01/23/2013 | CN202688399U Device for purifying and cobalt removal from high-cobalt zinc sulfate solutions |
| 01/23/2013 | CN102888513A Method of fully separating copper, manganese, zinc, cobalt and calcium chloride solution |
| 01/23/2013 | CN102002602B Method for increasing recovery rates of lead and zinc during lead-zinc sulfide ore dressing-smelting joint application |
| 01/22/2013 | CA2597467C Metal vapour condensation and liquid metal withdrawal |
| 01/17/2013 | WO2013009630A1 Apparatus and method for condensing metal vapor |
| 01/16/2013 | CN102876888A Zinc hydrometallurgy production process |
| 01/16/2013 | CN102876887A Method for comprehensively recycling metal from laterite-nickel ore leaching agent |
| 01/16/2013 | CN102876885A Method for comprehensively recycling chlorine containing materials by means of water vapor activation and microwave roasting |
| 01/15/2013 | CA2539166C Process and apparatus for recovery of non-ferrous metals from zinc residues |
| 01/09/2013 | EP2543746A1 Hydrometallurgical method for the recovery of zinc in a sulphur medium from sulphured zinc concentrates |
| 01/09/2013 | CN202658204U Feeding device for immersed reaction tank |
| 01/09/2013 | CN102162038B Application of silicon carbide material in metallic zinc powder production furnace |
| 01/02/2013 | EP2539041A1 Apparatus and method for treating exhaust gas |
| 01/02/2013 | CN102851511A Method for reducing contents of zinc and copper in smelting ash acid leaching residues |
| 01/02/2013 | CN102851496A Treatment method of high-indium high-iron zinc concentrate |
| 01/02/2013 | CN102230080B Method for zinc raw material dechlorination in zinc hydrometallurgy |
| 01/02/2013 | CN102162032B Method for recovering lead and silver from purification slag of zinc hydrometallurgy |
| 12/27/2012 | US20120328494 Method for recovering indium, silver, gold and rare, precious and base metals from complex oxide and sulfide ores |
| 12/26/2012 | CN202626273U Zinc ash recovery device |
| 12/26/2012 | CN102839284A Process and system for cobalt removal from high cobalt zinc sulfate solution |
| 12/26/2012 | CN102839283A Method for removing chlorine in manganese electrolyte or zinc electrolyte |
| 12/26/2012 | CN102839282A Method for producing high-purity nano zinc oxide from low-grade zinc oxide ores |
| 12/26/2012 | CN102839279A Method for treating zinc hydrometallurgy dechlorinated copper residue through microwave continuous roasting |
| 12/26/2012 | CN102154552B Method for removing chlorine from chlorine-containing zinc sulfate solution by using bismuth trioxide |
| 12/26/2012 | CN101839645B Equipment for recovering valuable metals from zinc-contained slag |
| 12/19/2012 | CN102828051A Desiliconization process in zinc hydrometallurgy |
| 12/19/2012 | CN102828035A Method for producing high-purity zinc oxide through decarbonization on electrolytic zinc acid leaching slag by adopting ammonia process |
| 12/19/2012 | CN102828034A Method for producing high-purity zinc oxide through decarbonization on low-grade zinc oxide ore by adopting ammonia process |
| 12/19/2012 | CN102828032A Method for producing lithopone by utilizing electrolytic zinc acid leaching slag |
| 12/19/2012 | CN102828031A Method for separating, gathering and purifying cobalt, zinc and ferrum by heavy metal adsorption material |
| 12/19/2012 | CN102828027A Dechlorination method for indium raffinate |
| 12/19/2012 | CN102010995B Method for increasing copper recovery rate in zinc hydrometallurgy process |
| 12/12/2012 | CN202599080U Vertical metal distillation vacuum induction furnace |
| 12/12/2012 | CN102816937A Method for producing zinc oxide through waste zinc material secondary distillation, and special-purposed kiln thereof |
| 12/12/2012 | CN102337391B Process method for recovering indium, germanium and other valuable metals from indium concentrate |
| 12/05/2012 | CN202582180U Improved 109 m<2> boiling-bed roaster |
| 12/05/2012 | CN102808088A Proportioning method for recycling waste residues of valuable metal through sulphur fixation treatment |
| 12/05/2012 | CN102808087A Method for extracting zinc, potassium and sodium by utilizing secondary dusts of rotary hearth furnace |
| 12/05/2012 | CN102808083A Cadmium removing process for use in zinc liquid purification and zinc liquid purifying method |
| 12/04/2012 | US8323377 Recovery of metals from oxidised metalliferous materials |
| 12/04/2012 | US8323375 Method of operating a converter and apparatus for carrying out the method |
| 11/28/2012 | CN102803525A Method for separating and recovering elements coexisting in scrap iron |
| 11/28/2012 | CN102796869A Method for removing chlorine in zinc sulfate solution with high chlorine content |