| Patents for C22B 11 - Obtaining noble metals (5,080) |
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| 07/08/2004 | CA2510013A1 Treatment of granular solids in a fluidized bed with microwaves |
| 07/06/2004 | CA2202063C Method of recovering gold |
| 06/30/2004 | EP1433860A1 Process for regenerating thiosulphate from a spent thiosulphate gold leachant |
| 06/30/2004 | EP1432836A1 Metal ion recovery |
| 06/24/2004 | US20040118249 Process for separation/recovery of platinum group metals |
| 06/24/2004 | US20040118248 Dissolving; alkaline treatment in brine solutions, then acidification |
| 06/17/2004 | WO2004050927A1 Method for separating platinum group element |
| 06/17/2004 | WO2004050926A1 A process for the recovery of adsorbed palladium from spent silica |
| 06/17/2004 | WO2004050660A1 Novel heteroatom containing tetracyclic derivatives as selective estrogen receptor modulators |
| 06/17/2004 | US20040115108 thiosulfate lixiviants and molecular oxygen through the heap to form a pregnant leach solution of dissolved precious metals, wherein the molecular oxygen is at a pressure greater than its ambient atmospheric pressure before introduction to the heap |
| 06/17/2004 | US20040115107 Purification of platinum group anions; using reagents having precisely spaced nitrogen complexing groups |
| 06/17/2004 | US20040113333 Hydrometallurgical processing system with hydrostatic pressure assisted autoclaving |
| 06/17/2004 | CA2505857A1 Novel heteroatom containing tetracyclic derivatives as selective estrogen receptor modulators |
| 06/16/2004 | CN1153850C Process for preparing high-purity gold by electrolyzing extracted gold-contained organic phase |
| 06/10/2004 | WO2004048623A1 Method for recovering trace elements from coal |
| 06/09/2004 | EP1425428A2 Method for obtaining cobalt and nickel from ores and ore concentrates |
| 06/09/2004 | EP1012350B1 Method for reprocessing materials containing precious metals by means of chromatographic separation and fractionation |
| 06/03/2004 | WO2004046036A2 Method for thiosulfate leaching of precious metal-containing materials |
| 06/03/2004 | US20040105799 which is used as an adsorbent in column chromatography or as a catalyst support; burning spent silica gel with palladium complex adsorbed on its surface, washing the residue with a mineral acid, drying , precipitating |
| 06/03/2004 | CA2716442A1 Method for thiosulfate leaching of precious metal-containing materials |
| 05/27/2004 | US20040102658 For recovering rhodium catalysts from homogeneously catalysed hydroformylation reactions of olefins with carbon monoxide |
| 05/27/2004 | US20040099095 Method for recovering trace elements form coal |
| 05/21/2004 | WO2004042094A1 Reducing cyanide consumption in gold recovery from finely ground sulphide ores and concentrates |
| 05/19/2004 | DE10249521A1 Making palladium sponge virtually free of palladium oxide involves hydrazine reduction from compound including halogen, and heating and cooling sponge product in nitrogen |
| 05/19/2004 | DE10249520A1 Dissolving iron out of an iron-based collector alloy, especially in mobilization of noble metals from spent catalysts, involves addition of ferric chloride and chlorine |
| 05/15/2004 | CA2850217A1 Method for thiosulfate leaching of precious metal-containing materials |
| 05/15/2004 | CA2850216A1 Method for thiosulfate leaching of precious metal-containing materials |
| 05/15/2004 | CA2691607A1 Method for thiosulfate leaching of precious metal-containing materials |
| 05/11/2004 | US6733567 Bioleaching, oxidation |
| 05/06/2004 | WO2002018663A8 Selective recovery of aluminium, cobalt and platinum values from a spent catalyst composition |
| 05/06/2004 | EP1112389A4 Process for recovery of gold and/or silver |
| 05/05/2004 | CN1493706A Method for separating/ recovering platinum family metal |
| 05/05/2004 | CN1493421A Preparation method of nanometer silver material |
| 04/29/2004 | WO2004035844A1 The process for extracting gold in arsenic-containing concerntrate of gold and the equipment thereof |
| 04/29/2004 | US20040081602 Roasting raw materials; using leaching solutions |
| 04/29/2004 | US20040079200 Chromatographic method of separating ruthenium from platium group metals |
| 04/28/2004 | EP1412545A1 Method for improving metals recovery using high temperature pressure leaching |
| 04/28/2004 | EP1261750B1 Wet process for refining silver bullion including gold separation |
| 04/28/2004 | EP1230408B1 Recovery of precious metals from coal burning slag by multiple crushing/suspension stages |
| 04/27/2004 | US6726847 Silver stain removal by chemical etching and sonication |
| 04/22/2004 | WO2004033735A1 Method for removal of silver from a copper chloride solution |
| 04/22/2004 | WO2004033734A1 Process for extracting quantities of precious metals |
| 04/21/2004 | CN1490418A Method and system for extracting gold from arsenic contained headings |
| 04/15/2004 | US20040069687 Installation and method for processing shredder residues and use of a shred fraction so produced |
| 04/14/2004 | CN1145707C Method for producing platinum material reinforced with dispersed oside |
| 04/08/2004 | WO2004029308A1 Method for osmium distillation into gas phase from sulphur-acid sludge of copper production |
| 04/01/2004 | WO2003100412A3 Method of ore treatment |
| 03/31/2004 | CN1143900C Process for producing of refined platinum |
| 03/25/2004 | US20040056393 System for producing noble metals |
| 03/24/2004 | CN1143002C Method for extracting anions of IVB to VIII metals using alkyl-substituted 1,3-diaminopropanes |
| 03/23/2004 | US6709641 Using dialkyl-substituted 1,3-diaminopropanes; high loading capacity |
| 03/18/2004 | WO2004022796A1 Process and apparatus for recovery of cyanide and metals |
| 03/18/2004 | WO2004022795A1 Process for recovering platinum group metals from material containing base metals |
| 03/18/2004 | WO2004005557B1 Metal compound removal |
| 03/18/2004 | CA2497993A1 Process for recovering platinum group metals from material containing base metals |
| 03/16/2004 | CA2342692C A process for recovering gold from thiosulfate leach solutions and slurries with ion exchange resin |
| 03/11/2004 | US20040045406 During metal recovery process from an ore, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which otherwise tend to passivate the reactive process or encapsulate the metal value |
| 03/11/2004 | US20040045405 The process of the present invention recovers platinum group metal(s), such as platinum and palladium, from PGM-containing materials containing base metals, such as copper and nickel. The process controls sulfur levels by using solvent extraction |
| 03/09/2004 | CA2203637C Method for treating mineral material having organic carbon to facilitate recovery of a precious metal |
| 03/04/2004 | WO2004018717A2 Electrostatically enhanced tribochemical methods and apparatus |
| 03/04/2004 | WO2003087416A9 Process for extracting platinum group metals |
| 03/03/2004 | EP1119646B1 Liquid carton waste material recycling process and apparatus |
| 03/03/2004 | CN1478909A Gold extraction technology for direct roasting gold raw ore |
| 03/02/2004 | CA2152770C Process for treatment of volcanic igneous rocks to recover gold, silver and platinum |
| 02/26/2004 | US20040035252 Thiosulfate lixiviants that include at most only small amounts of copper and/or ammonia and operate at low ph, reduction of polythionates |
| 02/25/2004 | CN1477215A Method for extracting gold and silver from indissoluble gold and silver preparation concentrate |
| 02/12/2004 | WO2004013361A1 Method of recovering platinum group element and apparatus therefor |
| 02/12/2004 | WO2002070756A3 Recovery of metals from jarosite-containing materials |
| 02/12/2004 | US20040026329 Precious metal scavenging from a liquid medium with a functionalised polymer fiber |
| 02/12/2004 | US20040025636 Assaying method |
| 02/11/2004 | CN1138007C Removing As and S elements from high As and high S gold ore concentrate |
| 02/03/2004 | US6686202 Quantitating gold in ore samples utilizing a gold-specific protein are provided, including methods for multiple sample handling. also provided are methods for extracting gold from mineral suspensions utilizing a magnetic mineral binding |
| 02/03/2004 | US6685896 Method for recovering rhodium from reaction products of oxosynthesis |
| 02/03/2004 | US6685877 Apparatus for heating flowing material containing solids |
| 02/03/2004 | CA2217457C A method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate |
| 01/29/2004 | DE10231228A1 Rückgewinnung von Wertstoffen aus Zündkerzen und Glühkerzen Recovery of valuable materials from spark plugs and glow plugs |
| 01/28/2004 | CN1471433A Installation and method for processing shredder residues and use of a shred fraction so produced |
| 01/27/2004 | US6682005 Method of recovery of precious metals & heavy minerals |
| 01/21/2004 | EP1295953B1 Method for producing platinum material reinforced with dispersed oxide |
| 01/20/2004 | US6679984 Method for recovery of gold and silver |
| 01/15/2004 | WO2004005557A1 Metal compound removal |
| 01/15/2004 | WO2004005556A1 Process for leaching precious metals |
| 01/13/2004 | CA2326037C The recovery of gold from refractory ores and concentrates of such ores |
| 01/08/2004 | US20040003681 Method for recovering catalytic metals using a porous metal filter |
| 01/07/2004 | CN1465727A Gold ore stirring cyanidation technology |
| 01/06/2004 | US6673732 Washing off promoters using bases, then dissolving the magnesium oxide catalyst support in acids and separating ruthenium from the solutions |
| 12/25/2003 | US20030236440 Recover and recycle rhodium from spent partial oxidation catalysts |
| 12/18/2003 | WO2003104503A1 Inhibition of the depletion of precious metal values from pregnant lixiviant solutions |
| 12/11/2003 | US20030228245 In metal leaching; using surfactant mixtures |
| 12/11/2003 | US20030228244 Inhibition of the depletion of metal values from pregnant lixiviant solutions |
| 12/09/2003 | US6660059 Contacting the precious metal (gold) ore with a thiosulfate lixiviant at superatomopheric pressure in absence of added copper and ammonia to solubilize the precious metal from a pregnant thiosulfate leach solution, recovering the metal |
| 12/04/2003 | WO2003100412A2 Method of ore treatment |
| 12/04/2003 | US20030224220 Dense refractory material for use at high temperatures |
| 12/04/2003 | US20030223927 Liquids/solids reaction vessel configured to contain a mixture of at least one liquid and at least one solid. The vessel includes a closed perimeter wall defined by an effective height, and a bottom connected to the closed perimeter wall to |
| 12/04/2003 | US20030221955 Aluminium-wettable protective coatings for carbon components used in metallurgical processes |
| 11/26/2003 | EP1364073A2 Sieve tray column and process for recovery of metal value |
| 11/25/2003 | US6652623 Method and kit for working up a gold bath |
| 11/25/2003 | US6652622 Separating clays and fines from a crushed refractory sulfide ore, forming a heap, adding concentrate of separated sulfide fines to the heap, bioleaching (biooxidation) and hydrometallurgically treating bioleached ore |
| 11/25/2003 | CA2167571C Hydrometallurgical process for the recovery of precious metal values from precious metal ores with thiosulfate lixiviant |
| 11/20/2003 | US20030216463 Novel heteroatom containing tetracyclic derivatives as selective estrogen receptor modulators |