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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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