Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing single metal
Patent
1994-10-26
1996-05-14
Niebling, John
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Preparing single metal
205 77, 205101, 205138, 205581, 205582, 205583, C25C 112, C25D 104, C25D 2118, C25D 706
Patent
active
055164080
ABSTRACT:
This invention relates to a process for making copper wire directly from a copper-bearing material, comprising: (A) contacting said copper-beating material with an effective amount of at least one aqueous leaching solution to dissolve copper ions into said leaching solution and form a copper-rich aqueous leaching solution; (B) contacting said copper-rich aqueous leaching solution with an effective amount of at least one water-insoluble extractant to transfer copper ions from said copper-rich aqueous leaching solution to said extractant to form a copper-rich extractant and a copper-depleted aqueous leaching solution; (C) separating said copper-rich extractant from said copper-depleted aqueous leaching solution; (D) contacting said copper-rich extractant with an effective amount of at least one aqueous stripping solution to transfer copper ions from said extractant to said stripping solution to form a copper-rich stripping solution and a copper-depleted extractant; (E) separating said copper-rich stripping solution from said copper-depleted extractant; (F) flowing said copper-rich stripping solution between an anode and a cathode, and applying an effective amount of voltage across said anode and said cathode to deposit copper on said cathode; (G) removing said copper from said cathode; and (H) converting said removed copper from (G) to copper wire at a temperature below the melting point of said copper.
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Bay Adam G.
Eamon Michael A.
Kohut Stephen J.
Mills Bradford A.
Peckham Peter
Centanni Michael A.
Gould Electronics Inc.
Magma Copper Company
Niebling John
Wong Edna
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