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Class Information
Number: 75/736
Name: Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures > Processes > Producing or treating free metal > Below 300 degrees c > Using nonmetallic material which is liquid under standard conditions (e.g., hydrometallurgy, etc.) > Displacing by another metal (i.e., electromotive series) > Noble metal recovered as free metal > Gold(au) recovered as free metal
Description: Process wherein the free metal recovered by displacement is Gold (Au).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8029751 |
Reduction of lime consumption when treating refractory gold ores or concentrates |
Oct. 4, 2011 |
| 7682420 |
Method for leaching gold |
Mar. 23, 2010 |
| 7572317 |
Thiosulfate generation in situ in precious metal recovery |
Aug. 11, 2009 |
| 7534285 |
Method and apparatus for the recovery of refractory mineral ores |
May. 19, 2009 |
| 7156894 |
Method for recovering metal values from concentrates of sulfide minerals |
Jan. 2, 2007 |
| 7125436 |
Method for improving metals recovery using high temperature pressure leaching |
Oct. 24, 2006 |
| 6652623 |
Method and kit for working up a gold bath |
Nov. 25, 2003 |
| 6500231 |
Recovery of precious metals from thiosulfate solutions |
Dec. 31, 2002 |
| 6344068 |
Process for recovering gold from thiosulfate leach solutions and slurries with ion exchange resin |
Feb. 5, 2002 |
| 6331200 |
Method for preparing gold of high purity |
Dec. 18, 2001 |
| 5885327 |
Process for the recovery of gold |
Mar. 23, 1999 |
| 5785736 |
Gold recovery from refractory carbonaceous ores by pressure oxidation, thiosulfate leaching and resin-in-pulp adsorption |
Jul. 28, 1998 |
| 5683490 |
Solution mining of precious metals using aqueous, sulfur-bearing solutions at elevated temperatures |
Nov. 4, 1997 |
| 5536297 |
Gold recovery from refractory carbonaceous ores by pressure oxidation and thiosulfate leaching |
Jul. 16, 1996 |
| 5453297 |
Process for producing finely divided metals deposited on oxidized metals |
Sep. 26, 1995 |
| 5364453 |
Method for recovering gold and other precious metals from carbonaceous ores |
Nov. 15, 1994 |
| 5338338 |
Method for recovering gold and other precious metals from carbonaceous ores |
Aug. 16, 1994 |
| 5320665 |
Metal recovery process from solution with a steel substrate |
Jun. 14, 1994 |
| 5240687 |
Brine treatment |
Aug. 31, 1993 |
| 5238662 |
Processes for recovering precious metals |
Aug. 24, 1993 |
| 5232490 |
Oxidation/reduction process for recovery of precious metals from MnO.sub.2 ores, sulfidic ores and carbonaceous materials |
Aug. 3, 1993 |
| 5147617 |
Process for recovery of gold from gold ores using a complexing pretreatment and sulfurous acid leaching |
Sep. 15, 1992 |
| 5147618 |
Process for recovery of gold from refractory gold ores using sulfurous acid as the leaching agent |
Sep. 15, 1992 |
| 5145515 |
Treatment of brine |
Sep. 8, 1992 |
| 5145656 |
Brine treatment |
Sep. 8, 1992 |
| 5139752 |
Method for extraction of gold and silver from ore with a solution containing a halogen, halogenated salt and organic solvent |
Aug. 18, 1992 |
| 5114687 |
Ammonia extraction of gold and silver from ores and other materials |
May. 19, 1992 |
| 5096678 |
Method and apparatus for beneficiating ores |
Mar. 17, 1992 |
| 5085836 |
Process for desilvering silver halide processing fluids |
Feb. 4, 1992 |
| 5082492 |
Recovery of precious metals from aqueous media |
Jan. 21, 1992 |
| 5078786 |
Process for recovering metal values from jarosite solids |
Jan. 7, 1992 |
| 5051128 |
Elution process for gold-iodine complex from ion-exchange resins |
Sep. 24, 1991 |
| 5028260 |
Recovery of gold from acidic solutions |
Jul. 2, 1991 |
| 5021088 |
Biohydrometallurgical processing of ores, and microorganisms therefor |
Jun. 4, 1991 |
| 4992097 |
Metal recovery process |
Feb. 12, 1991 |
| 4904358 |
Gold and silver recovery processes by electrolytic generation of active bromine |
Feb. 27, 1990 |
| 4770700 |
Hydrometallurgical process for the separation and enrichment of gold, platinum, and palladium, together with recovery of selenium from the anode sludge of copper electrolysis |
Sep. 13, 1988 |
| 4731113 |
Method for the recovery of precious metals from ores |
Mar. 15, 1988 |
| 4725313 |
Method of extracting a precious metal from an ore |
Feb. 16, 1988 |
| 4723998 |
Recovery of gold from carbonaceous ores by simultaneous chlorine leach and ion exchange resin adsorption process |
Feb. 9, 1988 |
| 4670052 |
Process for the recovery of gold from a precious metal bearing sludge concentrate |
Jun. 2, 1987 |
| 4662938 |
Recovery of silver and gold |
May. 5, 1987 |
| 4655829 |
Metal recovery process |
Apr. 7, 1987 |
| 4654078 |
Method for recovery of precious metals from difficult ores with copper-ammonium thiosulfate |
Mar. 31, 1987 |
| 4632701 |
Process for the recovery of silver from a residue essentially free of elemental sulphur |
Dec. 30, 1986 |
| 4561947 |
Process for the recovery of noble metals from ores; which process uses thiourea |
Dec. 31, 1985 |
| 4551213 |
Recovery of gold |
Nov. 5, 1985 |
| 4384889 |
Simultaneous leaching and cementation of precious metals |
May. 24, 1983 |
| 4369061 |
Recovery of precious metals from difficult ores |
Jan. 18, 1983 |
| 4342591 |
Process for the recovery of gold and/or silver and possibly bismuth contained in sulfuretted ores and/or sulfoarsenides |
Aug. 3, 1982 |
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