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Class Information
Number: 75/740
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.) > Utilizing chemical agent to precipitate free metal > Copper(cu) recovered as free metal
Description: Process wherein the free metal recovered is Copper (Cu).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8540950 |
Method for the removal of chloride from zinc sulphate solution |
Sep. 24, 2013 |
| 8404019 |
Chemical agents for recovery of leached materials |
Mar. 26, 2013 |
| 8357227 |
Method for the purification of copper chloride solution |
Jan. 22, 2013 |
| 8323377 |
Recovery of metals from oxidised metalliferous materials |
Dec. 4, 2012 |
| 8308842 |
Pyrophoric iron nanoparticles and continuous processes for production thereof |
Nov. 13, 2012 |
| 8216340 |
Method for producing dispersed, crystalline, stable to oxidation copper particles |
Jul. 10, 2012 |
| 8070850 |
Process for liberating metals using direct production of leach grade acid solutions |
Dec. 6, 2011 |
| 8043399 |
Process for rapid microwave-enhanced detoxification of CCA-treated wood |
Oct. 25, 2011 |
| 8012318 |
Process for multiple stage direct electrowinning of copper |
Sep. 6, 2011 |
| 7794677 |
Reduction of copper content in the molybdenite concentrate |
Sep. 14, 2010 |
| 7582136 |
Recovery of gold from potassium iodide-iodine etching solution |
Sep. 1, 2009 |
| 7476308 |
Process for multiple stage direct electrowinning of copper |
Jan. 13, 2009 |
| 7387767 |
Recovery of nickel, cobalt, iron, silica, zinc and copper from laterite ore by sulfuric acid leaching |
Jun. 17, 2008 |
| 7214644 |
Cross-coupling reactions |
May. 8, 2007 |
| 7211230 |
Process for producing nanometer grade powders |
May. 1, 2007 |
| 7156894 |
Method for recovering metal values from concentrates of sulfide minerals |
Jan. 2, 2007 |
| 6893482 |
Method for improving metals recovery using high temperature pressure leaching |
May. 17, 2005 |
| 6626979 |
Method for improving metals recovery using high temperature pressure leaching |
Sep. 30, 2003 |
| 6599414 |
Solvent extraction processes for metal recovery |
Jul. 29, 2003 |
| 6596053 |
Processes for the recovery of copper from aqueous solutions containing nitrate ions |
Jul. 22, 2003 |
| 6468327 |
Process for processing residual substances containing at least one nonferrous metal and/or compounds thereof |
Oct. 22, 2002 |
| 6451088 |
Method for improving metals recovery using high temperature leaching |
Sep. 17, 2002 |
| 6432167 |
Processes for the recovery of copper from aqueous solutions containing nitrate ions |
Aug. 13, 2002 |
| 6117209 |
Hydrometallurgical process for treating alloys and drosses to recover the metal components |
Sep. 12, 2000 |
| 6007600 |
Method for producing copper in hydrometallurgical process |
Dec. 28, 1999 |
| 5917116 |
Method for the processing of copper minerals |
Jun. 29, 1999 |
| 5709731 |
Slurry pipeline leaching method |
Jan. 20, 1998 |
| 5431713 |
Method for the reclamation of metallic compounds from zinc and lead containing dust |
Jul. 11, 1995 |
| 5366599 |
Method of selective recovery of ferrous and nonferrous metals from industrial wastes and scrap home electric appliances |
Nov. 22, 1994 |
| 5356457 |
Hydrometallurgical process for the treatment of copper-bearing ore |
Oct. 18, 1994 |
| 5316567 |
Hydrometallurgical copper extraction process |
May. 31, 1994 |
| 5223024 |
Hydrometallurgical copper extraction process |
Jun. 29, 1993 |
| 5122279 |
Ferrous dithionite process and compositions for removing dissolved heavy metals from water |
Jun. 16, 1992 |
| 5006262 |
Process for recovering copper from copper ion containing aqueous solutions |
Apr. 9, 1991 |
| 4956097 |
Waste treatment of metal containing solutions |
Sep. 11, 1990 |
| 4684450 |
Production of zinc from ores and concentrates |
Aug. 4, 1987 |
| 4676828 |
Process for the leaching of sulphides containing zinc and iron |
Jun. 30, 1987 |
| 4606764 |
Method of recovering metals from ores using a formate reducing agent |
Aug. 19, 1986 |
| 4582613 |
Use of copper (II) oxide as source of oxygen for oxidation reactions |
Apr. 15, 1986 |
| 4420401 |
Solution waste treatment |
Dec. 13, 1983 |
| 4197117 |
Recovery of copper by ferrous ion precipitation |
Apr. 8, 1980 |
| 4065300 |
Method for extraction of copper products from copper bearing material |
Dec. 27, 1977 |
| 3951649 |
Process for the recovery of copper |
Apr. 20, 1976 |
| 3933475 |
Extraction of copper from copper sulfides |
Jan. 20, 1976 |
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