| Patents for C22B 19 - Obtaining zinc or zinc oxide (2,969) |
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| 10/21/2009 | CN101560601A Method for improving zinc extraction yield in ammonia solution |
| 10/21/2009 | CN101560600A Method for effectively improving effect of extracting zinc in ammonia solution |
| 10/14/2009 | CN201326002Y Calcine feeding delivery device |
| 10/14/2009 | CN201325998Y Puddler |
| 10/14/2009 | CN101555549A Smelting process for rich manganese and equipment thereof |
| 10/14/2009 | CN100549191C Improved method for metal heap and dump leaching coupled with metal solvent extraction |
| 10/07/2009 | CN100547094C Method for recovery and utilization of acid waste liquid generated in waste lead acid accumulator lead -recovery process |
| 10/06/2009 | US7597740 Recovery of non-ferrous metals from zinc residues |
| 10/01/2009 | DE102008016323A1 Acid zinc coating removal process for scrap metal involves creating zinc oxide, dissolving it in acid, applying solution to scrap, cleaning and recovering zinc by electrolysis |
| 09/23/2009 | CN101538648A Method for activating ammonia leaching for high calcium-magnesium zinc oxide ore |
| 09/22/2009 | CA2401253C Method for regulating a roasting furnace |
| 09/16/2009 | EP2100978A1 Method of reduction treatment of metal oxides or steelmaking waste and method of concentrating and recovering zinc and/or lead |
| 09/16/2009 | CN201309959Y Fluidized roaster with gas burner at fore chamber |
| 09/11/2009 | WO2009110149A1 Process for recovery of valuable metals from scrap izo |
| 09/09/2009 | CN101525695A Method for recycling zinc fume in enrichment smelting technology of manganese |
| 08/27/2009 | DE102008009352A1 Method for recycling galvanized steel scrap comprises immersing the scrap in an alkaline solution, removing the zinc layer from the scrap in the solution to form an alkaline solution containing zinc ions and further processing |
| 08/26/2009 | CN101514400A A method for treating zinc smoke |
| 08/20/2009 | WO2009101864A1 Method of recovering valuable metals from izo scrap |
| 08/20/2009 | WO2009101863A1 Method of recovering valuable metals from izo scrap |
| 08/19/2009 | CN101509083A Method for extracting zinc from flue dust of copper revolving furnace |
| 08/12/2009 | CN101503760A Method for extracting zinc from zinc oxide ore ammonia leaching solution |
| 08/04/2009 | CA2438016C Process for electrolytic production of ultra-pure zinc or zinc compounds from zinc primary and secondary raw materials |
| 08/04/2009 | CA2353875C Composition of oxime and hydroxy-ester for the solvent extraction of metals |
| 07/29/2009 | EP2082070A1 Recovery of non-ferrous metals from by-products of the zinc and lead industry using electric smelting with submerged plasma |
| 07/29/2009 | CN101492774A Zinc metallurgy apparatus and process |
| 07/16/2009 | WO2009087908A1 Method of recycling useful metal |
| 07/07/2009 | CA2453364C Heap bioleaching process for the extraction of zinc |
| 07/07/2009 | CA2383812C Recovery of zinc from zinc bearing sulphide minerals by bioleaching and electrowinning |
| 07/02/2009 | US20090165598 Novel phosphinic acids and their sulfur derivatives and methods for their preparation |
| 07/01/2009 | EP1499752B1 Sulfuric acid beneficiation of titaniferous ore for the production of tio2 |
| 07/01/2009 | CN101469372A Method and apparatus for purifying zincilate |
| 07/01/2009 | CN100507031C High-heat direct reduction dezincing method for zinc-containing dust carbon-bearing briquette |
| 06/10/2009 | CN101451198A Method for recovering zinc and lead from waste electrolysis anode sludge |
| 06/10/2009 | CN101451197A Vertical rotary type zinc rain condensator |
| 06/03/2009 | CN201250271Y Three-pass type air blowing structure of leaching tank |
| 06/03/2009 | CN201250270Y Liquid inlet device of heat exchanger |
| 05/27/2009 | CN101440431A Method for removing cobalt in high-cobalt zinc sulfate solution |
| 05/26/2009 | US7537741 Gold and silver recovery from polymetallic sulfides by treatment with halogens |
| 05/19/2009 | US7534389 Apparatus and process for extracting arsenic in vacuum |
| 05/13/2009 | CN101429593A Dezincification process for zinc-containing mash gas mud |
| 05/12/2009 | CA2421722C Pressure leaching process for zinc recovery from sulphidic ore materials |
| 04/29/2009 | CN201228278Y Heterogeneous material separation apparatus |
| 04/29/2009 | CN101418377A Wet method smelting process of high silicon zinc oxide crude ore |
| 04/23/2009 | WO2009050334A1 Method for the hydrometallurgical processing of sulphidic material containing zinc and copper |
| 04/22/2009 | CN101413059A Process for comprehensively and efficiently recycling zinc and indium in indium raffinate |
| 04/15/2009 | CN101410538A Method for recycling steelmaking dust |
| 04/15/2009 | CN101407863A Fluidizing reactor with coal gas burner in the fore chamber |
| 04/15/2009 | CN101407862A Method for previously removing copper from copper-containing solution |
| 04/14/2009 | US7517383 Method for recovery of zinc by countercurrent leaching |
| 04/09/2009 | WO2009043961A1 Modified induction furnace and method for removing zinc-containing metallurgical waste, with recovery of the metals therefrom |
| 04/08/2009 | CN100475987C Process and apparatus for recovery of non-ferrous metals from zinc residues |
| 04/01/2009 | CN100473733C Novel process for cooling of pyrogenic process zinc smelting |
| 03/25/2009 | EP2039807A1 Electrolysis system and method |
| 03/25/2009 | CN101392328A Wet zinc metallurgical ultrasound purification method, device and use |
| 03/25/2009 | CN100471967C Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 03/18/2009 | CN101386913A Method for recovering zinc oxide in Zn-containing dust treatment by rotary hearth furnace |
| 03/18/2009 | CN100469907C Method for processing dust containing zinc of electric furnace |
| 03/12/2009 | WO2009032109A1 Direct smelting of zinc bearing compounds to produce metallic zinc |
| 03/12/2009 | WO2009030811A1 Method for upgrading copper concentrate |
| 03/12/2009 | CA2697187A1 Method for upgrading copper concentrate |
| 03/12/2009 | CA2687755A1 Direct smelting of zinc bearing compounds to produce metallic zinc |
| 03/03/2009 | US7498006 Smelting arsenic gold ore concentrate and iron powder; heating to remove the volatilized arsenic sulfides; crystallization, producing arsenic; shutdown,cooling, charge the air, take out the gold-rich slag after dearsenization, and extract fine gold |
| 02/25/2009 | CN101372728A Process and apparatus for recovery of non-ferrous metals from zinc residues |
| 02/24/2009 | CA2396839C Lead, zinc and manganese recovery from aqueous solutions |
| 02/18/2009 | CN101368233A Zinc base alloy material smelting process |
| 02/17/2009 | US7491423 Inking stamp with relief structures with solution comprising self-assembled monolayer molecules, contacting stamp to surface, thereby transferring self-assembled monolayer molecules to surface, and contacting aqueous zinc solution to surface to grow zinc oxide nanorods; optoelectronics |
| 02/05/2009 | WO2009017019A1 Method for reducing electric furnace dust |
| 02/04/2009 | CN101358283A Technique for continuously smelting plurality of metalliferous material using rotary kiln and smelting furnace |
| 01/28/2009 | CN201186947Y Vertical rotary type zinc rain condensator |
| 01/28/2009 | CN101353725A Novel liquid cooling clarification underflow processing unit and method |
| 01/21/2009 | CN101351567A Method for recovering rare metals in zinc leaching process |
| 01/14/2009 | CN201180151Y External-hot vertical vacuum metal recovery distillation furnace |
| 01/14/2009 | CN101343693A Dust-separation zinc extraction method |
| 01/13/2009 | CA2363969C Process for the recovery of residual metal values from smelter waste slags, and from converter slags |
| 01/07/2009 | CN101341265A Separation of metal values in zinc leaching residues |
| 12/31/2008 | CN101336306A Leaching process in the presence of hydrochloric acid for the recovery of a value metal from an ore |
| 12/24/2008 | CN201169612Y Fuming furnace |
| 12/17/2008 | CN101323905A Fire metallurgy process of copper lead zinc mixing ore concentrate |
| 12/16/2008 | US7465334 Zinc recovery process |
| 12/11/2008 | WO2008149683A1 Reduction treatment apparatus and method of reduction treatment |
| 12/10/2008 | CN201162034Y Zinc regeneration collecting device employing forced-air circulation water-cooling |
| 12/04/2008 | WO2008145490A1 Method for the valorisation of zinc- and sulphate-rich residue |
| 12/04/2008 | WO2008144967A1 A method for recovery and production of ultrafine zinc powder |
| 12/04/2008 | CA2685927A1 Method for the valorisation of zinc- and sulphate-rich residue |
| 12/03/2008 | EP1997919A1 Method of recovering zinc- and sulphate-rich residue |
| 12/03/2008 | CN101314820A Method for producing zinc finemeal with zinc oxide mine or zinc slag |
| 11/26/2008 | CN100436609C Heavy-duty material inlay sintering process production technique |
| 11/25/2008 | US7455715 Heap bioleaching process for the extraction of zinc |
| 11/25/2008 | CA2423166C Method for making reduced iron |
| 11/20/2008 | WO2008139412A1 Producing a metal like zinc from sulphide ores by chloride leaching and electrowinning |
| 11/20/2008 | DE102006021315B4 Verfahren zur Verwertung von zinkhaltigen polymetallischen Stoffen Process for the recovery of zinc-containing substances polymetallic |
| 11/19/2008 | CN101307383A Process for leaching out zinc in fluosolids roasting soot of zinc concentrate by bacteria |
| 11/13/2008 | WO2008135574A1 Method for producing zinc oxide powder and powder thus obtained |
| 11/13/2008 | CA2686448A1 Method for producing zinc oxide powder and powder thus obtained |
| 11/12/2008 | CN201148458Y Zinc metallurgy equipment |
| 10/21/2008 | US7438874 Extraction of a base metal such as Ni, Co or Zn, from a sulphide ore or concentrate containing copper and the base metal comprises the step of subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic |
| 10/14/2008 | US7435281 Pyrometallurgic process for the treatment of steelwork residues |
| 10/02/2008 | WO2008117649A1 Method of recovering valuable metal from scrap containing conductive oxide |
| 10/01/2008 | EP1727916A4 Recovery of metals from oxidised metalliferous materials |
| 09/24/2008 | CN101270416A Zincium bayer process for processing zinc oxide material |