| Patents for C22B 11 - Obtaining noble metals (5,080) |
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| 02/20/1997 | WO1997006282A1 Electrochemical processing method for catalyst substrates containing noble metals for the recovery thereof |
| 02/18/1997 | US5603890 Silver reduction assembly including a hollow coil of screen material formed of a metal that is above silver in electromotive force series; for precipitating silver as metal from photographic solutions |
| 02/18/1997 | US5603750 Fluorocarbon fluids as gas carriers to aid in precious and base metal heap leaching operations |
| 02/13/1997 | WO1997005294A1 Method of purifying gold |
| 02/13/1997 | WO1996041029A3 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide ores |
| 02/13/1997 | CA2237171A1 Method of purifying gold |
| 02/04/1997 | US5599515 Method of removing mercury from solution |
| 01/29/1997 | EP0756013A1 Interseparation of platinum group metals |
| 01/26/1997 | CA2154608A1 Method of purifying gold |
| 01/15/1997 | EP0753078A1 Solvent extraction process |
| 01/15/1997 | CN1140472A Material beneficiation process and device |
| 01/08/1997 | EP0752013A1 Hydrometallurgical extraction process |
| 01/02/1997 | EP0712445A4 Hydrometallurgical process for the recovery of precious metal values from precious metal ores with thiosulfate lixiviant |
| 01/01/1997 | CN1139156A Adsorptive palladium-alloy net |
| 12/25/1996 | CN1138633A Selectively smelting tech. and appts. for fine particle of primary gold ore via contaminating |
| 12/19/1996 | WO1996041029A2 Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulphide ores |
| 12/19/1996 | WO1996041027A1 Chloride assisted hydrometallurgical extraction of metal |
| 12/19/1996 | WO1996041026A1 Chloride assisted hydrometallurgical extraction of metal |
| 12/19/1996 | DE19522064A1 Method and appts. for recovery of noble metals from electronic scrap |
| 12/19/1996 | DE19522063A1 Method and apparatus for recovery of noble metals from activated carbon@ |
| 12/19/1996 | CA2456772A1 Chloride assisted hydrometallurgical extraction of metal |
| 12/05/1996 | WO1996038381A1 Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 12/03/1996 | CA2013536C Recovery of dissolved gold by sodium borohydride reduction |
| 11/27/1996 | CN1136595A Enriching and activating and dissolving method for low grade and difficult treating noble metal materials |
| 11/20/1996 | EP0742843A1 Material beneficiation process and device |
| 11/19/1996 | US5575915 Methods of removing silver |
| 11/12/1996 | US5573575 Separating ore into fines and coarse fraction, forming heap with coarse fraction, producing concentrate from fines, adding concentrate to heap, biooxidizing ore in heap, hydrometallurgically treating ore to recover precious metal |
| 10/31/1996 | WO1996034121A1 Method of treating intractable gold- and silver-containing materials, ores and concentrates |
| 10/24/1996 | WO1996033146A1 A method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate |
| 10/23/1996 | CN1133893A Process and apparatus for making pure palladium |
| 10/16/1996 | CN1133617A Gold lixiviation using nitrogen and sulfur beterocyclic aromatic |
| 10/09/1996 | CN1133071A Recovery of palladium catalyst |
| 09/26/1996 | WO1996029439A1 Atmospheric mineral leaching process |
| 09/18/1996 | CN1131442A Process for elution of precious metals adsorbed on active carbon |
| 08/21/1996 | CN1129257A Mercury-free alchemy and equipment thereof |
| 08/13/1996 | US5544756 Dynamic mining system comprsing hydrated multiple recovery sites and related methods |
| 08/07/1996 | CN1128296A Method for extracting noble metal by using modified lime-sulfur mixture |
| 08/06/1996 | CA2090468C Silver recovery process |
| 07/31/1996 | EP0723599A1 Recovery of palladium catalyst |
| 07/24/1996 | CN1127304A Palladium recovering method from waste palladium carbon catalyst |
| 07/17/1996 | CN1126764A Metallurgical technology of sulfuric acid treatment of concentrated gold ore powder |
| 07/17/1996 | CN1126701A Regeneration of cyanide by oxidation of thiocyanate |
| 07/16/1996 | US5536480 Method for treating mineral material having organic carbon to facilitate recovery of gold and silver |
| 07/16/1996 | US5536387 Silver removal |
| 07/16/1996 | US5536297 Gold recovery from refractory carbonaceous ores by pressure oxidation and thiosulfate leaching |
| 07/16/1996 | US5536294 Process for extracting precious metals from volcanic ore |
| 07/10/1996 | EP0720661A1 Process for the elution of precious metals adsorbed on active carbon |
| 06/19/1996 | EP0717117A1 Method for the recovery of silver value from aqueous solution |
| 06/06/1996 | WO1996017097A1 Material beneficiation process and device |
| 06/06/1996 | WO1996017096A1 Method for treating mineral material having organic carbon to facilitate recovery of a precious metal |
| 06/06/1996 | CA2181369A1 Method for dressing materials and means for performing said method |
| 06/05/1996 | CN1123843A Recovery of platinum family elements from waste catalysts |
| 06/04/1996 | US5522997 Process for the removal of toxic cyanide and heavy metal species from alkaline solutions |
| 05/22/1996 | EP0712445A1 Hydrometallurgical process for the recovery of precious metal values from precious metal ores with thiosulfate lixiviant |
| 05/22/1996 | CN1122836A Method for recovering silver from waste liquor containing silver chloride |
| 05/21/1996 | CA2000991C Method for sorbing metal values from a slurry containing the same |
| 05/15/1996 | CN1031805C Separating and enriching method for rhodium, iridium, and gold, platinum palladium in solution |
| 05/08/1996 | EP0686206A4 Recovery of precious metal values from refractory ores |
| 05/03/1996 | CA2134941A1 Reclamation of metal plate |
| 05/02/1996 | WO1996012826A1 Method for heap biooxidation of ore |
| 05/01/1996 | CN1121541A Gold extracting method by recovery |
| 04/24/1996 | CN1121318A Removing toxic metals from solutions |
| 04/24/1996 | CN1121116A Microbe-preoxidation gold-lixiviating technology and the bacteria culturing device used |
| 03/28/1996 | WO1996009417A1 Leaching of precious metal ore with fluoroaliphatic surfactant |
| 03/28/1996 | CA2198001A1 Leaching of precious metal ore with fluoroaliphatic surfactant |
| 03/27/1996 | CN1031414C Process of compounding lime sulfur mixture for extracting Au, Ag |
| 03/27/1996 | CN1031413C Process for producing manganese sulfate and extracting silver from manganesesilver ore |
| 03/06/1996 | CN1118015A Method for recovering silver from micro-silver contained waste liquid |
| 03/06/1996 | CN1118014A Simple method for recovering gold from waste material |
| 02/28/1996 | CN1117473A Chemical reacting tank for obtaining metal and salt |
| 02/20/1996 | CA2156440A1 Regeneration of cyanide by oxidation of thiocyanate |
| 02/11/1996 | CA2129892A1 Precious metal recovery process from ores |
| 02/07/1996 | EP0695809A1 Processes to recover and reconcentrate gold from its ores |
| 02/07/1996 | CN1116243A Method for making pure iridium |
| 02/07/1996 | CN1030930C Method of extracting gold and silver using lime sulfur mixture |
| 01/31/1996 | EP0694812A2 Process of recovering silver from photographic solutions |
| 01/30/1996 | US5487819 Production of metals from minerals |
| 01/28/1996 | CA2140567A1 Process of recovering silver from photographic solutions |
| 01/17/1996 | CN1030720C Extraction and recovery of gold |
| 01/17/1996 | CN1030719C Noble metal recovery |
| 01/16/1996 | US5484470 As catalyst available for coordination to surface of undissolved gold |
| 01/11/1996 | WO1996000801A1 Precious metal extraction process |
| 01/11/1996 | CA2194137A1 Precious metal extraction process |
| 01/09/1996 | US5482694 Using oxygen or ozone for oxidation |
| 01/09/1996 | US5482535 Process for the recovery of silver by floatation from the residue from the wet extraction of zinc |
| 01/09/1996 | US5482534 Precipitation of iron and arsenic as ferric arsenate and extraction |
| 01/09/1996 | CA2047711C Extraction and recovery of gold |
| 12/27/1995 | CN1113961A Technology for recovery gold from waste carbon |
| 12/26/1995 | US5478376 Converting a ruthenium, rhodium, or iridium chloro complex to a nitrosyl complex, precipitating rhodium or iridium by manipulation of their oxidation states |
| 12/19/1995 | CA1337739C Process for removal of soluble platinum group metal catalysts from liquid product mixtures |
| 12/19/1995 | CA1337738C Solvent extraction process |
| 12/13/1995 | EP0686206A1 Recovery of precious metal values from refractory ores |
| 12/13/1995 | EP0686205A1 Recovery of zinc values from a solution containing hydrocyanic acid |
| 12/05/1995 | US5472675 Polyvinyl alcohol agglomeration agents for mineral bearings ores |
| 11/29/1995 | CN1030401C Gold-extracting process with liquid film of soaking while grinding and its equipment |
| 11/23/1995 | WO1995031577A1 Process for recovery of gold and silver from complex pyrite and arsenopyrite ores and concentrates |
| 11/22/1995 | EP0683240A2 Process for preparing Yltrium oxide dispersion hardened pure platinum material, workpieces and plates |
| 11/22/1995 | EP0683136A2 Silver removal |
| 11/21/1995 | CA1337576C Pretreatment/agglomeration as a vehicle for refractory ore treatment |
| 11/08/1995 | CN1111288A Recovery of gold from tailing pulp |