| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 03/25/2009 | EP2038437A1 Hybrid process using ion exchange resins in the selective recovery of nickel and cobalt from leaching effluents |
| 03/25/2009 | EP1817437B1 Method of extracting europium(iii) and yttrium(iii) from concentrate of luminophore dust or sludge |
| 03/25/2009 | CN101395285A Process for the acid digestion of metal-containing compounds |
| 03/25/2009 | CN101392327A Method for leaching copper in waste printed circuit board by microbiology |
| 03/25/2009 | CN101392326A Method for recovering gold from all-sliming cyanidation gold extraction slag |
| 03/25/2009 | CN101392323A Method and device for continuously preparing acidic phosphor/phosphine extractant rare earth soap by lime milk |
| 03/25/2009 | CN101392321A Method for treating nickel-containing laterite by microwave reducing roasting-hematite precipitation conversion method |
| 03/25/2009 | CN101392320A Method for treating nickel-containing laterite by microwave reducing roasting-goethite precipitation conversion method |
| 03/25/2009 | CN100471968C Method of metal recovery |
| 03/25/2009 | CN100471967C Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 03/25/2009 | CN100471966C Ultrasonic leaching-extracting separation method for low-yttrium middle-heavy rare earth mine |
| 03/25/2009 | CN100471965C Ultrasonic leaching-extracting separation method for yttrium-rich rare earth mine |
| 03/25/2009 | CN100471964C Ultrasonic strengthening extraction separation method of cerium-rich rare earth nitrate solution |
| 03/25/2009 | CN100471963C Ultrasonic leaching-extracting separation method for sulphating roasting rare earth mine |
| 03/25/2009 | CN100471962C Method for separating enriched uranium, thorium mixture and rare earth from preferred slag |
| 03/25/2009 | CN100471947C Bacterial strain for leaching out ore or clean ore comprising metallic sulfide ore component and leaching method thereof |
| 03/24/2009 | CA2438331C Method of purification of a redox mediator before electrolytic regeneration thereof |
| 03/19/2009 | WO2009033227A1 Limonite and saprolite heap leach process |
| 03/19/2009 | US20090074608 Process for mercury control during pressure oxidation |
| 03/19/2009 | US20090074607 Process for recovering gold and silver from refractory ores |
| 03/18/2009 | EP2035591A1 Improved leaching method |
| 03/18/2009 | EP1694425B1 A method of recycling an exhausted selenium filter mass |
| 03/18/2009 | CN101386922A Method for extracting molybdenum by roasting high impurity sodium carbonate nickel-ferro-molybdenum |
| 03/18/2009 | CN101386912A Copper extractive agent |
| 03/18/2009 | CN101386911A Rare earth carbonate solvent extraction and separation technology |
| 03/18/2009 | CN101386910A Copper extractive agent |
| 03/18/2009 | CN101386909A Method for extracting rare-earth from ardealite |
| 03/18/2009 | CN100469909C Molybdenum vanadium multimetal metallurgical material resolving method |
| 03/18/2009 | CN100469908C Method for the treatment of copper-containing materials |
| 03/18/2009 | CN100469905C Method for preparing iron concentrate for making iron from phosphorus-containing oolitic hematite |
| 03/18/2009 | CN100469411C Method and equipment for removing aqueous entrainment and impurities in extraction solution |
| 03/17/2009 | US7504075 Ultrasonic reactor and process for ultrasonic treatment of materials |
| 03/12/2009 | WO2009030894A1 Composition and method for removing metal contaminants |
| 03/12/2009 | WO2009030811A1 Method for upgrading copper concentrate |
| 03/12/2009 | CA2697187A1 Method for upgrading copper concentrate |
| 03/11/2009 | EP1809777B1 Leaching process in the presence of hydrochloric acid for the recovery of a value metal from an ore |
| 03/11/2009 | CN201206161Y Oxygen dispersion apparatus |
| 03/11/2009 | CN101384737A Method for recovering gold |
| 03/11/2009 | CN101384736A Method for recovering copper from a copper sulphide ore |
| 03/11/2009 | CN101381818A Method for preparing intermediate salt during acid leaching and extraction of vanadium pentoxide from vanadium-containing stone coal ash |
| 03/11/2009 | CN101381817A Method for directly recovering and producing electrowinning cobalt from waste and old lithium ionic cell |
| 03/11/2009 | CN101381816A Method and equipment for recovering cadmium and nickel from waste and old nickel-cadmium battery and preparing metal cadmium ingot and superfine nickel powder |
| 03/11/2009 | CN101381812A Application of o-phenylenediamine in extraction of |
| 03/11/2009 | CN101381811A Two method for removing mercury from waste and old dry battery leaching solution |
| 03/11/2009 | CN101381810A Extraction process of copper nickel fine alloy |
| 03/11/2009 | CN100467633C Process for recovering silver from waste fixer solution |
| 03/11/2009 | CN100467632C Method for dump leaching producing copper and copper sulfate by copper oxide ore acid method |
| 03/11/2009 | CN100467631C Method for recovering gold and copper from gold-plated printed circuit board waste material |
| 03/10/2009 | US7501089 Method and apparatus for controlling the size of powder produced by the Armstrong Process |
| 03/10/2009 | CA2610918C Processes for treating aluminium dross residues |
| 03/05/2009 | WO2009029463A1 Simplified process for leaching precious metals from fuel cell membrane electrode assemblies |
| 03/05/2009 | WO2009026683A1 A hydrometallurgical process using resin-in-neutralized-solution of a heap leaching effluent |
| 03/05/2009 | WO2009026682A1 Resin-in-leach process to recover nickel and/or cobalt in ore leaching pulps |
| 03/05/2009 | CA2697777A1 Resin-in-leach process to recover nickel and/or cobalt in ore leaching pulps |
| 03/05/2009 | CA2697367A1 Simplified process for leaching precious metals from fuel cell membrane electrode assemblies |
| 03/04/2009 | EP2031089A1 Device and method for selective separation of at least one metal from a phosphation bath |
| 03/04/2009 | CN101379204A Aqueous solutions containing metal cyanide for cyanide leaching for the winning of gold and silver |
| 03/04/2009 | CN101376929A Method for extracting bismuth from bismuth ore concentrate or material containing bismuth |
| 03/04/2009 | CN101376926A Pre-classification nickel extraction processing method for low grade nickel oxide |
| 03/04/2009 | CN101376924A Method for recycling gold from refractory gold concentrate |
| 03/04/2009 | CN101376923A Method for recycling noble metal from spent catalyst |
| 03/04/2009 | CN101376922A Extraction of superpure concentrate of magnetite and preparation thereof |
| 03/04/2009 | CN100465307C A stone-like coal gas phase vanadium extracting method |
| 03/03/2009 | US7498007 Precipitating in acid solution; centrifuging, filtration; calcium hydroxide, quicklime or calcium carbonate to the acid solution or liquor, producing a precipitate of vanadium pentoxide, which is separated |
| 03/03/2009 | CA2420630C Method and apparatus for chemical processing |
| 02/25/2009 | EP1769095A4 Recovery of nickel |
| 02/25/2009 | CN201198490Y Nobel metal recycling apparatus of nitric acid device |
| 02/25/2009 | CN101372727A Method for extracting valuable metal from hyper-accumulator |
| 02/25/2009 | CN100463983C Method for reclaiming metal by copper smelting-furnace magnesia brick lining |
| 02/24/2009 | US7494630 Method of stripping metals from organic solvents |
| 02/24/2009 | US7494529 monitoring/controlling inorganic, organic compounds in a raffinate solution, produced in the process, to levels below that which could be inhibitory to microbial activity for leaching cu, fe, ni, zn, gold or cobalt from the ore; concentration of O2, CO2 consumption as an indicator of microbial activity |
| 02/24/2009 | US7494528 Method for smelting copper concentrates |
| 02/24/2009 | CA2396839C Lead, zinc and manganese recovery from aqueous solutions |
| 02/24/2009 | CA2295066C Selective precipitation of nickel and cobalt |
| 02/22/2009 | CA2595275A1 The sequential lixivation and precipitation of metals from refractory ores by utilising variable oxidation reduction potentials and a variable ph system |
| 02/20/2009 | CA2638966A1 Method and device for particulate scrubbing and conditioning |
| 02/19/2009 | WO2009023813A1 Metals recovery from mining heap leach ore |
| 02/19/2009 | WO2009021389A1 A PROCESS OF SMELTING MONAZITE RARE EARTH ORE RICH IN Fe |
| 02/18/2009 | EP2025387A1 Method for producing monodisperse chelate resin |
| 02/18/2009 | EP2024523A2 Chloride heap leaching |
| 02/18/2009 | CN101368278A Method for dismutation electrolytic production of hydrogen, copper, lead, zinc, acid and alkali-chloride by elemental sulfur |
| 02/18/2009 | CN101368230A Low-grade indium recycling process |
| 02/18/2009 | CN100462453C Comprehensive extraction process of valent metal from bismuth-containing polymetallic material |
| 02/17/2009 | US7491372 Obtaining pregnant copper solutions from concentrates of any type of copper sulfides, including the chalcopyrite, suitable for being treated by well known solvent extraction and copper electro-winning method for obtaining premium quality copper cathodes; minimum copper recovery of 96% |
| 02/12/2009 | WO2009019955A1 Method for treatment of arsenic-containing nonferrous smelting intermediate product |
| 02/12/2009 | WO2009018695A1 An enriching and screening bauxite desulfurizing bacteria method by using acidic water from the mining pit in high sulfur ore regions |
| 02/12/2009 | WO2009018619A1 Atmospheric acid leach process for laterites |
| 02/12/2009 | CA2707387A1 Method of processing non-ferrous smelting intermediates containing arsenic |
| 02/11/2009 | EP2021519A2 A method and composition for selectively stripping nickel from a substrate |
| 02/11/2009 | CN201193227Y Device for quickly cultivating strain for soaking ore |
| 02/11/2009 | CN101363081A Nontoxic process for extraction gold from gold-bearing tailing |
| 02/11/2009 | CN101363080A Power device and mounting method thereof |
| 02/11/2009 | CN101363079A Smelting method of iron rich mengite rare-earth mine |
| 02/11/2009 | CN100460532C Method of preparing high purity copper by bacteria of primary leaching sulfide ore |
| 02/11/2009 | CN100460523C Technique for reclaiming iron from waste slag in production of boric acid and magnesium sulphate from ludwigite |
| 02/10/2009 | US7488370 Reducing cyanide consumption in gold recovery from finely ground sulphide ores and concentrates |
| 02/05/2009 | WO2009017434A1 Method for recovering non-ferrous, rare, radioactive and precious metals from refractory mineral raw materials |
| 02/05/2009 | WO2008139430A3 Drainage system for aerated heap leaching comprising perforated flat tubes |
| 02/05/2009 | US20090035833 Separating clays and fines from crushed refractory sulfide ore and forming a heap from the ore; concentrating of refractory sulfide minerals from the separated fines and add to the heap; bioleaching the heap to thereby oxidize iron sulfides; hydrometallurgically recover values; gold |
| 02/05/2009 | US20090031861 Apparatus And Process For Recovery Of Values From A Value Bearing Material |