Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing single metal
Patent
1997-06-25
1998-12-15
Gorgos, Kathryn L
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Preparing single metal
205583, 205584, 205586, 75746, C25C 112, C22B 100
Patent
active
058491724
ABSTRACT:
An improved method and apparatus is provided for the production of copper using a solvent extraction electrowinning process. Process streams formed during the process containing entrained liquids are fed to a cyclone to remove either organic extractant or water (aqueous solutions) from the stream. A raffinate stream fed to a cyclone removes entrained organic phase which organic phase may be recycled to the process. The separated raffinate stream would then typically be recycled to the copper ore leach step to form a pregnant leach solution without the loss of organic solvent and/or the environmental concerns associated with entrained solvent. In a preferred new process, mixers, preferably inline, are used in conjunction with cyclones to provide a solvent extraction electrowinning process which is continuous and efficient and the use of conventional mixers, and particularly settlers, are eliminated.
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Allen Glenn C.
Burns George R.
Nebeker Neil J.
ASARCO Incorporated
Gorgos Kathryn L
Koch Kenneth A.
Tomaszewski John J.
Wong Edna
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