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United States Patent | 3,865,744 |
Parker , et al. | February 11, 1975 |
Copper is processed via solutions of copper salts, both cupric and cuprous, in acidified aqueous solutions containing organic nitriles. Methods of producting solutions of cuprous salts include reduction of cupric salts and oxidation of copper and copper sulphides. Solutions of cuprous salts are thermally or electrochemically disproportionated to produce copper and solutions of cupric salts.
Inventors: | Parker; Alan James (Canberra A.C.T., AU), Waghorne; Winfield Earle (Canberra A.C.T., AU), Giles; Dion Ewing (Canberra A.C.T., AU), Sharp; John Howard (Canberra A.C.T., AU), Alexander; Robert (Canberra A.C.T., AU), Muir; David Michael (Canberra A.C.T., AU) |
Appl. No.: | 05/237,061 |
Filed: | March 22, 1972 |
Apr 02, 1971 [AU] | 4500/71 | |||
Apr 02, 1971 [AU] | 4501/71 | |||
Apr 02, 1971 [AU] | 4502/71 | |||
Apr 28, 1971 [AU] | 4735/71 | |||
Jun 04, 1971 [AU] | 5110/71 | |||
Sep 14, 1971 [AU] | 6281/71 | |||
Sep 24, 1971 [AU] | 6411/71 | |||
Oct 20, 1971 [AU] | 6718/71 | |||
Oct 26, 1971 [AU] | 6798/71 | |||
Dec 14, 1971 [AU] | 7383/71 | |||
Jan 26, 1972 [AU] | 7776/72 | |||
Current U.S. Class: | 75/373 ; 203/33; 203/34; 203/35; 203/38; 203/57; 205/581; 423/23; 423/27; 423/41; 423/45; 423/92; 75/718 |
Current International Class: | C01G 3/00 (20060101); C01G 3/10 (20060101); C25C 1/12 (20060101); C25C 1/00 (20060101); C22B 15/00 (20060101); C22b 015/00 (); C22b 015/08 (); C22b 015/12 () |
Field of Search: | 75/.5A,117,108 203/31,32,34,35,38,57 423/27,29,23,41,45 252/188.3R 204/106 |
3353950 | November 1967 | Junghauss |
3502551 | March 1970 | Todt et al. |
575,812 | May., 1959 | CA | |||
1,180,140 | Oct., 1964 | DT | |||
681,882 | Oct., 1966 | BE | |||
Technique of Inorg. Chem., Vol. I, John Wiley, N.Y. (1963), p. 42.. |