| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 07/23/2008 | CN101225471A Method for recovering molybdenum from water-washing molybdenum calcine wastewater |
| 07/23/2008 | CN101225470A Method for extracting nickel and cobalt from lateritic nickel by hydrochloric acid process |
| 07/23/2008 | CN101225469A Active additive for improving leaching ratio of hydrometallurgy |
| 07/23/2008 | CN101225468A Method for recovering gold, silver, iron and lead from acid calcination slag by magnetization chlorination process |
| 07/23/2008 | CN100404708C Two-section roasting production process for recovering Au, Cu, Ag, As and S from As and C containing aurin ore |
| 07/23/2008 | CN100404707C Method of extracting gold and silver from arsenic containing aurin ore |
| 07/23/2008 | CN100404706C Process for extracting rare earth element by non-saponifiable phosphorous mixing extractant |
| 07/23/2008 | CN100404705C Method for extracting metal copper using microbe and its use |
| 07/22/2008 | CA2246089C Method for producing copper in hydrometallurgical process |
| 07/19/2008 | CA2618608A1 Integrated hydrometallurgical and pyrometallurgical processing of base-metal sulphides |
| 07/19/2008 | CA2579394A1 Method for increasing metal production in smelter operations |
| 07/17/2008 | WO2008036816A3 Multivalent iron ion separation in metal recovery circuits |
| 07/17/2008 | US20080170976 Method for the Hydrometallurgical Treatment of Sulfide Concentrate Containing Several Valuable Metals |
| 07/16/2008 | EP1468122B1 Method for the separation of zinc and nickel in the presence of chloride ions |
| 07/16/2008 | CN201087208Y Environment-friendly precious metal refiner |
| 07/16/2008 | CN101220506A Method for high concentration mass-synthesis of silver nano-wire |
| 07/16/2008 | CN101220418A Method for separating molybdenum, rhenium from molybdenum mineral |
| 07/16/2008 | CN101220417A Wet-process metallurgy method for extracting copper from waste composition brass melting furnace slag |
| 07/16/2008 | CN101220416A Method for recycling copper from clean melt cinder of wet-process zinc metallurgy |
| 07/16/2008 | CN100402679C Method for nickel and cobalt recovery from laterite ores |
| 07/16/2008 | CN100402677C Bacteria underground heap leaching process for copper ore |
| 07/16/2008 | CN100402676C Method for recovering valuable metals from electroplating sludge |
| 07/15/2008 | US7399454 Reacting with an aqueous nitric acid solution to non-ferrous metals into the solution which is in contact with solid ferric oxide wherein the metallurgical dust is an iron bearing hazardous waste, and wherein the solid ferric oxide is a non-hazardous waste |
| 07/15/2008 | CA2392846C Recovery and re-use of anode oxygen from electrolytic cells |
| 07/15/2008 | CA2384451C Base metal recovery from a tailings dump by bacterial oxidation |
| 07/11/2008 | CA2593301A1 Dissolved air floatation with filter system |
| 07/10/2008 | WO2008081324A2 Process for reduced alkali consumption in the recovery of silver |
| 07/10/2008 | WO2008080209A1 Process for recovery of nickel and cobalt from an ion-exchange resin eluate and product |
| 07/10/2008 | WO2008015582A3 Process for improving phase separations in solvent extraction circuits of metal winning |
| 07/10/2008 | CA2809742A1 Process for reduced alkali consumption in the recovery of silver |
| 07/10/2008 | CA2809738A1 Process for reduced alkali consumption in the recovery of silver |
| 07/10/2008 | CA2654818A1 Process for reduced alkali consumption in the recovery of silver |
| 07/09/2008 | EP1784516A4 Method for nickel and cobalt recovery from laterite ores by reaction with concentrated acid water leaching |
| 07/09/2008 | CN101218359A Process for recovery of metals and equipment therefor |
| 07/09/2008 | CN101215646A Alum extracting technique for clay ore by wet method |
| 07/09/2008 | CN101215640A Method for reclaiming vanadium and rare earth compounds from heavy slag of blast furnace slag |
| 07/09/2008 | CN101215638A Method for eluting nickel from nickel-carrying activated carbon by washing powder solution |
| 07/09/2008 | CN101215637A Method for eluting nickel from nickel-carrying activated carbon by cleanser essence |
| 07/09/2008 | CN101215636A Stone coal sodium roasting vanadium-extracting method |
| 07/09/2008 | CN101215635A Method for separating tantalum and niobium from potassium metatantalate and potassium metaniobate mixture |
| 07/09/2008 | CN101215634A Method for leaching nickel from nickel-carrying activated carbon by ammonium sulfate solution |
| 07/09/2008 | CN101215633A Integrated utilization technique for multi-metal ore containing gold and silver by chlorine carrier chlorination method |
| 07/09/2008 | CN100400687C Method of extracting radioactive uranium in phosphate |
| 07/09/2008 | CN100400684C Method for recovering noble-metal from waste catalyst |
| 07/09/2008 | CN100400683C Method for producing metallic lead and zinc by using lead-zinc containing waste slag or lead-zinc monoxide mine |
| 07/09/2008 | CN100400682C Producing method of ultrapure iron concentrate powder |
| 07/03/2008 | WO2008049177A3 Method for production of metallic cobalt from the nickel solvent extraction raffinate |
| 07/03/2008 | US20080156656 Method for recovering metal values from metal-containing materials using high temperature pressure leaching |
| 07/02/2008 | EP1939310A1 Recovery of zinc from sulphide concentrates by atmospheric leaching with sulphuric acid at a controlled acidity |
| 07/02/2008 | EP1937858A2 Bioleaching process control |
| 07/02/2008 | EP1937857A1 Process for recovery of metal values from materials containing arsenic and/or antimony |
| 07/02/2008 | EP1937855A1 Method for processing ore to minimize the production of acidic wastes |
| 07/02/2008 | EP1456427B1 Integrated ammoniacal solvent extraction and hydrogen reduction of nickel |
| 07/02/2008 | CN201079751Y Self-balancing water-separating micro-bubble generation aeration flotation column |
| 07/02/2008 | CN101210287A Acidolysis oxidation conversion method for extracting vanadium from stone coal |
| 07/02/2008 | CN100398678C A process for simultaneous recovery of chromium and iron from chromite ore processing residue |
| 07/02/2008 | CN100398677C Method of bacterial eliminating sulfur in high sulfur bauxite |
| 07/02/2008 | CN100398676C Process for recovery of nickel and cobalt by heap leaching of low grade nickel or cobalt containing material |
| 07/02/2008 | CN100398451C Extraction method of vanadium from stone coal with pollution treatment and ceramic production combination |
| 06/26/2008 | WO2008036985A3 Bioleaching process control in a stirred tank |
| 06/26/2008 | US20080152558 Method for the Treatment of Copper-Bearing Materials |
| 06/25/2008 | EP1841891A4 Extraction of nickel and cobalt from a resin eluate stream |
| 06/25/2008 | CN101205572A Technique for extracting germanium from germanium-containing material by pressure leaching |
| 06/25/2008 | CN101205571A Method for reclaiming metal stibium from waste fluorination catalyst antimony pentachloride |
| 06/25/2008 | CN100396804C Technology for extracting Gallium metal from lead-zine tail ore slug smelting by extracting-electrolytic method |
| 06/24/2008 | US7390468 For the stabilization of capacity, the extraction cells and their piping are constructed and situated in such a way, that the extraction stages can be connected in different combinations, either in parallel or in a series |
| 06/24/2008 | US7390420 Reducing the cross-section of the separation section with a dispersion-damming member in a trapezoidal settler; recovery of copper, uranium, cobalt, nickel or zinc |
| 06/19/2008 | US20080145289 Process For the Treatment of Electric and Other Furnace Dusts and Residues Containing Zinc Oxides and Zinc Ferrites |
| 06/19/2008 | US20080141828 sludge created in the metal separation is classified, as the process is concerned, into a better and a worse substance fraction based on a predetermined property of the sludge, and the worse substance fraction is removed from the process and the better substance fraction is returned back to the process |
| 06/18/2008 | CN101203621A Improved metal extraction |
| 06/18/2008 | CN101200776A Method for removing arsenic from smoke containing arsenic trioxide |
| 06/18/2008 | CN100395357C Harmful impurity eliminating and density increasing roasting process for activated zinc oxide powder and zinc scum |
| 06/18/2008 | CN100395356C Flotation zinc oxide concentrate wet method smelting process |
| 06/18/2008 | CN100395355C Method and apparatus for processing metalline sludge |
| 06/18/2008 | CN100395354C Comprehensive recovering process of multimetal sulfide mineral |
| 06/17/2008 | CA2411824C Waste metal removal systems and methods |
| 06/12/2008 | WO2008067594A1 Removal of impurities from bauxite |
| 06/12/2008 | US20080135491 Forming a magnetic floc by mixing magnetic seed and a flocculant with the water, driving a first rotary magnetic separator, collecting and removing the magnetic floc from the water, separating the magnetic seed from the magnetic floc, recycling the magnetic seed |
| 06/12/2008 | US20080135460 Separation Apparatus |
| 06/11/2008 | EP1929056A1 Process for leaching lateritic ore at atmospheric pressure |
| 06/11/2008 | EP1928624A2 Continuous production of nano-scale metal particles |
| 06/11/2008 | EP1678336A4 A process for the recovery of value metals from base metal sulfide ores |
| 06/11/2008 | EP1644541A4 Process for recovery of nickel and cobalt by heap leaching of low grade nickel or cobalt containing material |
| 06/11/2008 | EP1252345B1 Solvent extraction of impurity metals from a valuable metal sulphate solution |
| 06/11/2008 | CN201071388Y Leaching tank for gold ore sorting |
| 06/11/2008 | CN101198710A Indium containing metal producing method |
| 06/11/2008 | CN101195873A Deposition gallium from water solution |
| 06/11/2008 | CN101195872A Desorbent of ion exchange resin |
| 06/11/2008 | CN101195869A Solvent extraction method for materials after nickelous oxide mine chloridization oxidation treatment |
| 06/11/2008 | CN101195868A Method for processing roasted product raw material containing nickel |
| 06/11/2008 | CN101195862A Method for purifying and cadmium removing from nickel and cobalt solution |
| 06/11/2008 | CN101195861A Method for separating copper from nickel and cobalt solution |
| 06/11/2008 | CN101195860A Method and device for washing wet-process zinc metallurgy output slag |
| 06/11/2008 | CN101195859A Technique for processing low concentration heavy metal sulfate liquor with microorganism method |
| 06/11/2008 | CN101195858A Method for extracting nickel with pressure leaching of non-metal high nickel sulfonium material |
| 06/11/2008 | CN101195857A Solvent extraction method for acquiring alloy with magnetic separation copper bessemer matte |
| 06/11/2008 | CN100393897C Process for removing chloride fromiznc electrolytic solution by using silver hydroxide |
| 06/11/2008 | CN100393896C New method for soaking out enriched ores of high indium, high iron, and high sulfur zinc |
| 06/11/2008 | CN100393895C Method for extracting noble metal from waste print circuit board surface |
| 06/10/2008 | US7384448 Vaporizing silver precursor by heating in a crucible in a furnace, drawing a mixture of vaporized precursor and process gas into an inlet end of a conduit to cool the precursor and precipitate silver nanoparticles, and separating and collecting the particles |