| Patents for C22B 19 - Obtaining zinc or zinc oxide (2,969) |
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| 03/19/2014 | CN103643042A Comprehensive utilization method of lead slag |
| 03/19/2014 | CN103642702A Fungi strain LP-16 and use thereof for treatment of zinc-containing wastewater |
| 03/19/2014 | CN102828027B Dechlorination method for indium raffinate |
| 03/19/2014 | CN102776368B Lead and zinc tailing recycling method |
| 03/19/2014 | CN102382990B Method of flotation and direct reduction of comprehensively recovered lead, zinc and ferrum in oxidized lead-zinc ore |
| 03/12/2014 | CN203474875U Zinc feeding controller of heat preservation furnace |
| 03/12/2014 | CN103627912A Method for preparing zinc sulfate solution dechlorinating agent |
| 03/12/2014 | CN103627911A Treatment process for high-iron zinc oxide |
| 03/12/2014 | CN103627899A Device for clearing accumulated dregs in pipelines without disassembly in zinc hydrometallurgy |
| 03/11/2014 | CA2632923C Method for recovering rare metals in a zinc leaching process |
| 03/05/2014 | CN203462109U Refining furnace device |
| 03/05/2014 | CN103614570A Device and method of producing zinc ingot by zinc sediment |
| 03/05/2014 | CN103614568A Zinc slag reducing agent |
| 03/05/2014 | CN103614562A Process method for processing solid waste of steelworks by utilizing smelting furnace |
| 03/05/2014 | CN103614553A Wet-process zinc-smelting purifying liquid-solid separating process and device |
| 02/26/2014 | CN103602828A Method and device for producing zinc alloy used for hot dipping by using zinc slag |
| 02/26/2014 | CN103602806A Smelting method of high-indium high-iron zinc concentrate |
| 02/26/2014 | CN102776374B Treatment method of nickel-cadmium slag |
| 02/19/2014 | CN203442868U Webster furnace capable of reducing coal consumption |
| 02/19/2014 | CN103589877A Method for treating red ash |
| 02/19/2014 | CN103589873A Method for recovering valuable metals from silver-zinc slag |
| 02/13/2014 | WO2014022882A1 Recovery of zinc from lead slag |
| 02/12/2014 | CN203429235U Airtight pot furnace for producing zinc oxide |
| 02/12/2014 | CN103572052A Method for removing residual flotation reagent in a zinc sulfate solution |
| 02/12/2014 | CN103572051A Dechlorination method of zinc sulfate solution |
| 02/12/2014 | CN102839279B Method for treating zinc hydrometallurgy dechlorinated copper residue through microwave continuous roasting |
| 02/12/2014 | CN102690945B Method for recycling low-grade lead and zinc in pyrite cinder |
| 02/11/2014 | CA2745358C Method for extracting zinc from aqueous ammoniacal solutions |
| 02/06/2014 | US20140037519 Method for producing oxide/hydroxide |
| 02/05/2014 | CN103555966A Method for producing zinc hypoxide powder in rotary kiln by taking blast furnace smoke as raw material |
| 02/05/2014 | CN103555945A Method for removing arsenic and antimony of metallurgical dust pickle liquor through melt slag |
| 01/29/2014 | CN103547690A Precipitation of zinc from solution |
| 01/29/2014 | CN103540766A Technology for recycling indium from zinc oxide material with high fluoride and chlorine contents and removing fluorine, chlorine and arsenic from raffinate |
| 01/29/2014 | CN103540765A Zinc smelting technology |
| 01/23/2014 | WO2014013092A1 Hydrometallurgical method for recovering zinc in a sulphuric medium from zinc sulphide concentrates having a high iron content |
| 01/23/2014 | US20140023572 Method of ore processing |
| 01/23/2014 | US20140020510 Recovery of base metals from sulphide ores and concentrates |
| 01/22/2014 | CN203403143U Deironing device used in zinc hydrometallurgy production |
| 01/22/2014 | CN103526045A Continuous-recovery pusher kiln for regenerated zinc |
| 01/22/2014 | CN103526044A Zinc hydrometallurgy process favorable for floatation silver and adopted precipitating silver mixture |
| 01/22/2014 | CN103526024A Clean and environment-friendly comprehensive novel recycling process by virtue of high-indium high-iron zinc concentrate |
| 01/22/2014 | CN103526021A Cleansing and cobalt-removing method for zinc smelting leachate and scavenging agent used therein |
| 01/22/2014 | CN103521504A Method for comprehensively recovering gold and zinc from high leaching residue and recycling wastewater |
| 01/16/2014 | CA2821752A1 Hydrometallurgical method for recovery of zinc in sulphuric medium starting from sulphidic zinc concentrates with high iron content |
| 01/15/2014 | CN102634676B 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 |
| 01/08/2014 | EP2682487A1 Comprehensive recovery method for complex material containing arsenic and valuable metal slags |
| 01/08/2014 | CN102851511B Method for reducing contents of zinc and copper in smelting ash acid leaching residues |
| 01/08/2014 | CN102517439B Method for selectively roasting and separating tin, zinc and arsenic in compound iron ore containing tin, zinc and arsenic |
| 01/03/2014 | WO2014000021A1 Method for leaching zinc silicate ores |
| 01/01/2014 | CN103484670A Process for comprehensively recovering valuable metal from floatation silver concentrates of zinc hydrometallurgy system |
| 01/01/2014 | CN102230090B Lead-zinc integrated smelting furnace, and method for recovering lead and zinc |
| 12/25/2013 | CN203360538U Vacuum distillation furnace for extracting zinc from zinc alloy |
| 12/25/2013 | CN203360531U Vacuum distillation furnace used for zinc desilverization |
| 12/25/2013 | CN103468963A Method for crystal separation of zinc and cadmium from zinciferous waste residues |
| 12/25/2013 | CN103468961A Method for processing dust containing zinc and lead in steel plant through closed cupola furnace |
| 12/25/2013 | CN103468960A Process equipment for dedusted zinc ash and process method thereof |
| 12/25/2013 | CN103468954A Method for recycling valuable metals by smelting zinc kiln slag, leaching slag and lead slag |
| 12/25/2013 | CN103468953A Method for treating zinc sulfate solution |
| 12/25/2013 | CN103468952A Method for treating zinc sulfate solution |
| 12/25/2013 | CN102676833B High grade cobalt sulfonate slag and production process thereof |
| 12/18/2013 | EP1561829B1 Method for reduction treatment of metal oxide or ironmaking waste, and method for concentration and/or recovery of zinc and/or lead. |
| 12/18/2013 | CN203346450U Liquid collection chute of compartment press |
| 12/18/2013 | CN103451449A Activation extraction separation method for fluorine and chloride ions in zinc sulfate solution |
| 12/18/2013 | CN103451446A Smelting side-blowing reduction lead-zinc smelting device |
| 12/18/2013 | CN103451445A Smelting side-blowing reduction lead-zinc smelting process |
| 12/18/2013 | CN103451439A Treatment method of residues of zinc sulfate solution after being purified |
| 12/18/2013 | CN102851496B Treatment method of high-indium high-iron zinc concentrate |
| 12/11/2013 | CN103436706A Method for processing low-grade waste zinc slag to recover zinc, silver, lead and indium |
| 12/04/2013 | CN103421958A Method for processing zinc leaching cinder through adopting oxygen enrichment and smelting for bottom blown furnace |
| 12/04/2013 | CN103421955A Zinc leaching slag treatment method |
| 12/04/2013 | CN102417979B Processing method of zinc sulfide concentrate |
| 11/27/2013 | CN103411438A Method for reducing coal consumption by comprehensively and circularly utilizing waste heat of Webster furnace |
| 11/27/2013 | CN103409646A Method for preparing high-grade zinc oxide by utilizing cast iron dust |
| 11/27/2013 | CN103409645A Method for producing high-purity zinc |
| 11/27/2013 | CN103409622A Method for individually processing high-iron zinc sulfide concentrate |
| 11/27/2013 | CN103409621A Combined leaching method for high-iron zinc sulfide concentrate and high-iron zinc calcine leaching slag |
| 11/27/2013 | CN102965499B Method for extracting valuable element in arsenic salt purification slag from zinc hydrometallurgy |
| 11/27/2013 | CN102839282B Method for producing high-purity nano zinc oxide from low-grade zinc oxide ores |
| 11/27/2013 | CN102766718B Method for producing sponge iron and zinc-rich materials by blast furnace zinc-containing ash |
| 11/27/2013 | CN102747229B Method for separating and recycling valuable metals in powder rich in multiple metals of waste circuit board |
| 11/20/2013 | CN203295590U Zinc smelting furnace |
| 11/20/2013 | CN103397198A Oxygen-rich reduction furnace for processing low-grade multi-metal material |
| 11/14/2013 | WO2013166789A1 Cadmium removing process in zinc-containing solution purification and purification method of zinc-containing solution |
| 11/13/2013 | CN103388081A Bath smelting method and apparatus of zinc sulfide concentrate and lead-zinc containing materials |
| 11/06/2013 | CN103382527A Flash smelting method and device for zinc sulfide concentrates and materials containing lead and zinc |
| 11/05/2013 | US8574339 Method for the selective acidic dezincification of steel scrap |
| 10/30/2013 | CN203256350U Device for purifying copper ions in zinc electrolyte by using sulfur dioxide and for producing byproduct cuprous oxide |
| 10/30/2013 | CN103374659A Method for extracting and recovering precious metal and rare metal from wastes |
| 10/30/2013 | CN102776376B Method for recovering valuable metal from waste residue containing lead and zinc through wet-fire combination process |
| 10/30/2013 | CN102648298B Method for removal of chloride from zinc sulphate solution |
| 10/24/2013 | WO2013156832A1 Pyrometallurgical treatment of slags |
| 10/23/2013 | CN102925680B Method for controlling particle size of compressed-leached material of zinc sulfide concentrate |
| 10/23/2013 | CN102534228B Method for comprehensively recovering valuable elements from high-arsenic-containing copper smelting soot |
| 10/16/2013 | CN203238314U Zinc distillation and purification tray capable of preventing vapor leakage |
| 10/16/2013 | CN103352128A Direct zinc-coal mixing cyclone burning type zinc oxide production system |
| 10/16/2013 | CN103352116A Method for recovering zinc from high iron and high lead leaching residue through microwave-ultrasonic wave combination |
| 10/16/2013 | CN102732723B Waste acid addition controlling method of zinc wet smelting cobalt-removing purifying process employing arsenic salt |
| 10/15/2013 | US8557174 Process and apparatus for recovery of non-ferrous metals from zinc residues |
| 10/09/2013 | CN103343229A Method for comprehensively recovering valuable metals from electroplating waste mud |
| 10/02/2013 | CN203222605U Hot galvanizing zinc dross purifying device |