| Patents for C22B 11 - Obtaining noble metals (5,080) |
|---|
| 03/08/2001 | WO2001016383A2 Process and solution |
| 03/06/2001 | US6197214 Ammonium thiosulfate complex of gold or silver and an amine |
| 02/27/2001 | US6193881 In-situ chemical reactor for recovery of metals or purification of salts |
| 02/15/2001 | WO2001011094A1 Recovery of precious metal |
| 02/14/2001 | CN1283707A Process for increasing recovery rate of silver in calcine-syanation technology for extracting gold |
| 02/14/2001 | CN1062024C Cyaniding gold extracting additive from ore powder contg gold |
| 02/13/2001 | CA2315480A1 Process for removing metals from a sorbent |
| 02/08/2001 | WO2001009398A1 Apparatus for heating flowing material containing solids |
| 02/08/2001 | CA2380533A1 Apparatus for heating flowing material containing solids |
| 02/07/2001 | EP1074635A1 Separation of platinum group metals |
| 02/06/2001 | US6183710 Sodium cyanide paste composition |
| 01/31/2001 | EP1072690A1 Refining of precious-metal containing concentrates by chlorination |
| 01/31/2001 | EP0980442B1 In-situ reactor for recovering metals and energy |
| 01/25/2001 | WO2000065111B1 Oxidative pressure leach recovery of precious metals using halide ions |
| 01/18/2001 | WO2000061824A3 Process for recovering particles suspended in an aqueous slime |
| 01/17/2001 | EP1069103A1 Process for producing adamantanols |
| 01/17/2001 | CN1280557A Process to separate rhodium from an organic mixture |
| 01/04/2001 | DE19928027A1 Verfahren zur Herstellung von Platin A process for the preparation of platinum |
| 01/03/2001 | EP1064411A1 Extraction of valuable metal by acid cyanide leach |
| 12/26/2000 | US6165248 Introducing tracer into batch of scrap material; processing batch of scrap material and tracer into homogenous mixture; assaying sample portion ofhomogenous mixture to assess amount of tracer in the sample |
| 12/21/2000 | DE19928029A1 Verfahren zum Lösen von Edelmetallen aus edelmetallhaltigen Scheidgütern Method for solving of precious metals from noble metal-containing Scheid goods |
| 12/21/2000 | DE19927784A1 Verfahren zum Lösen von bei in Kontakt mit Halogenwasserstoffsäure Wasserstoff entwickelnde Unedelmetalle aufweisenden und Edelmetalle in metallischer und/oder legierter Form aufweisenden Scheidgütern Having process for dissolving at developing into contact with hydrogen halide acid hydrogen base metals and precious metals having in metallic and / or alloyed form Scheid goods |
| 12/20/2000 | EP1061145A1 Process of producing high purity platinum from a hexachloroplatinate solution |
| 12/20/2000 | EP1061144A1 Method of preparing high purity gold from precious metal bearing nitrate solutions |
| 12/20/2000 | EP1061143A1 Method for solubilizing noble metalls |
| 12/20/2000 | EP1061142A1 Method for dissolving metals |
| 12/14/2000 | WO2000075383A1 Recovery of gold from gold sulphides |
| 12/14/2000 | CA2375546A1 Recovery of gold from gold sulphides |
| 12/12/2000 | US6159726 Spraying coarse substrates with sulfide mineral concentrate, forming a heap, and bioxidizing the concentrate; faster rate than existing heap processes with low initial capital and operating costs |
| 12/06/2000 | CN1059242C Method for recoverying platinum from ammonia oxidation converter waste |
| 11/29/2000 | EP1055009A1 Methods for treating ores |
| 11/16/2000 | WO2000068446A1 Recovery of noble metals by lixiviation with thiourea controlled acidic solution |
| 11/16/2000 | CA2373014A1 Recovery of noble metals by lixiviation with thiourea controlled acidic solution |
| 11/15/2000 | EP0880726B1 Regeneration of spent fixer solution |
| 11/15/2000 | CN1273278A Process for recovering metal rhodium from residual liquid of waste rhodium catalyst |
| 11/14/2000 | US6146444 Method for recovering metal value from concentrates of sulfide minerals |
| 11/08/2000 | EP1050593A1 Two-stage bioleaching of sulphidic materials containing metal values and arsenic |
| 11/08/2000 | CN1058299C Ag and Au extracting and Sb, Bi, Cu and Pb recovering process from lead slime |
| 11/02/2000 | WO2000065112A1 Recovery of precious metal values from aqueous ammoniacal thiosulfate leach solutions |
| 11/02/2000 | WO2000065111A1 Oxidative pressure leach recovery of precious metals using halide ions |
| 11/02/2000 | CA2367609A1 Recovery of precious metal values from aqueous ammoniacal thiosulfate leach solutions |
| 11/01/2000 | CN1271781A Process for preparing gold by reduction of gold-contained chlorated liquid |
| 10/31/2000 | US6138833 Placer gold mining method, placer gold mining boat used in this method, placer gold digging and separating method and system therefor, and placer gold separating method and system therefor |
| 10/31/2000 | CA2092049C Process for the recovery of rhodium from residues of carbonylation reactions |
| 10/26/2000 | WO2000063630A1 Protection coating of wear-exposed components used for refining molten metal |
| 10/26/2000 | CA2369431A1 Protection coating of wear-exposed components used for refining molten metal |
| 10/19/2000 | WO2000061824A2 Process for recovering particles suspended in an aqueous slime |
| 10/19/2000 | WO2000061494A1 Sodium cyanide paste composition |
| 10/19/2000 | CA2368876A1 Process for recovering particles suspended in an aqueous slime |
| 10/18/2000 | CN1270235A Process for treating low-grade anode mud |
| 10/17/2000 | US6131836 Methods for treating ores |
| 10/17/2000 | US6131835 Methods for treating ores |
| 10/11/2000 | CN1057344C Chloride assited hydrometallurgical extraction of metal |
| 10/10/2000 | US6129779 Recovering cadmium and tellurium from a cadmium telluride solar cell by crushing the cell, dissolving in acid solution, separating from solid phase, precipitating, dispersing the precipitation sludge in alkaline solution |
| 10/03/2000 | US6126720 Method for smelting noble metal |
| 09/20/2000 | EP1036056A1 Process to separate rhodium from an organic mixture |
| 09/12/2000 | US6117207 Process for recovering metals and other chemical components from spent catalysts |
| 09/06/2000 | EP0832302B1 Chloride assisted hydrometallurgical extraction of nickel and cobalt |
| 08/31/2000 | WO2000050653A1 Method for the chemical precipitation of metallic silver powder via a two solution technique |
| 08/31/2000 | WO2000050651A1 Integrated, closed tank biooxidation/heap processes for leaching refractory sulfide ores |
| 08/30/2000 | EP0815270B1 Atmospheric mineral leaching process |
| 08/30/2000 | CN1055971C Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulfide minerals |
| 08/29/2000 | US6110255 Nozzle for low pressure flash tanks for ore slurry |
| 08/29/2000 | US6110254 Method for chemical precipitation of metallic silver powder via a two solution technique |
| 08/24/2000 | DE19859683C1 Verfahren zur Extraktion von Anionen A process for extraction of anions |
| 08/22/2000 | US6107065 Forming a concentrate of sulfide minerals from ore, coating onto coarse substrates, forming a heap with bacteria, and biooxidizing the mineral on the surface at a rate at least two times greater than average |
| 08/22/2000 | US6106589 Reducing gold complex in aqueous solution |
| 08/17/2000 | WO2000047556A1 Complexing agents |
| 08/17/2000 | DE19928028C1 High purity gold is recovered from nitrate solution by nitrate decomposition to obtain a highly acidic solution from which gold is recovered by ferric ion addition |
| 08/16/2000 | CN1263166A Treatment method of reusable cyanide gold-leaching lean solution |
| 08/16/2000 | CN1263165A Gold-extracting process by using reusable cyanide gold-leaching lean solution |
| 08/16/2000 | CN1055549C Method for recoverying silver from deposited silver mud of waste sensitive material |
| 08/15/2000 | US6103028 Method of fabricating thinned free-standing metallic hydrogen-selective palladium-bearing membranes and novel pin-hole-free membranes formed thereby |
| 08/10/2000 | WO2000045960A1 Method for processing a rock mass containing minerals |
| 08/01/2000 | US6096209 Three media silver recovery apparatus |
| 08/01/2000 | US6096113 Integrated, closed tank biooxidation/heap bioleach/precious metal leach processes for treating refractory sulfide ores |
| 08/01/2000 | US6095342 Hand held classifying device |
| 07/22/2000 | WO2000043558A1 Cyanide recovery from aqeuous ore processing solutions by solvent extraction |
| 07/19/2000 | EP1019551A1 Separation of platinum group metals |
| 07/18/2000 | US6090341 Gold is extracted from the ore and dissolved in a chemical solution to form a gold complex. complex is reduced to gold from the solution |
| 07/11/2000 | US6086656 Method for improving the heap biooxidation rate of refractory sulfide ore particles that are biooxidized using recycled bioleachate solution |
| 07/11/2000 | CA2148406C Process for producing very pure platinum materials, semifinished parts and foils dispersion-reinforced with y2o3 |
| 07/06/2000 | WO2000039350A1 Method for extracting anions of ivb to viii metals using alkyl-substituted 1,3-diaminopropanes |
| 07/06/2000 | CA2355853A1 Method of extracting anions of metals of groups ivb to viii by means of alkyl-substituted 1,3-diaminoprpopanes |
| 07/05/2000 | CN1054214C Method for recovering silver from solid sensitive material |
| 07/04/2000 | US6083730 Biooxidizing metal sulfide particles from sulfide ore using a static apparatus to liberate metal; obtaining a precipitate of metal sulfide particles, coating the surface of coarse substrates, biooxidizing metal sulfide particles |
| 06/29/2000 | DE19852077C1 Precious metal recovery process, especially for gold recovery from ores, sands or rocks, comprises low temperature smelting of a mixture of ground ore and alkali and then hydrothermally treatment |
| 06/28/2000 | EP1012350A1 Method for reprocessing materials containing precious metals by means of chromatographic separation and fractionation |
| 06/28/2000 | CN1257934A Formulation for purifying silver and process for quickly purifying silver by wet method |
| 06/27/2000 | US6079130 Portable gold mining dredge |
| 06/22/2000 | WO2000036166A1 Process and equipment for the separation of gold particles |
| 06/22/2000 | WO2000036165A2 Heavy caesium salt containing liquids for use in separation processes |
| 06/22/2000 | CA2355062A1 Process and equipment for the separation of gold particles |
| 06/14/2000 | CN1053475C Bacteria culturing device for microbe-preoxidation gold-lixiviating tech. |
| 05/31/2000 | CN1053017C Method for extracting palladium metal |
| 05/24/2000 | CN1254026A All-mud zinc cyanid powder substitution and carbon pulp adsorption seires-connection gold-extracting method |
| 05/10/2000 | CN1052265C Chloride assisted hydrometallurgical extraction of copper |
| 05/10/2000 | CN1052264C Metallurgical technology of sulfuric acid treatment of concentrated gold ore powder |
| 05/02/2000 | CA2138777C Production of metals from minerals |
| 04/27/2000 | WO2000023191A1 Process for grinding noble metals in liquid medium |