Process for the simultaneous extraction of all metal values...

Details Process for the simultaneous extraction of all metal values... Process for the simultaneous extraction of all metal values...

C - Chemistry, Metallurgy

22

B

53/370

C22B 3/00 (2006.01) C22B 47/00 (2006.01)

Patent

CA 1107974

TITLE: PROCESS FOR THE SIMULTANEOUS EXTRACTION OF ALL METAL VALUES OTHER THAN COPPER FROM MANGANESE NODULES ABSTRACT: This invention provides a two-stage leaching pro- cedure for manganese nodules for obtaining directly from a second leaching stage a substantially pure stream of copper free of other metal values, the other metal values, including manganese, nickel and cobalt, having been previously extracted in an earlier leaching stage. Both leaching operations are carried out utilizing an ammoniacal aqueous solution on a reduced manganese nodule. -1-

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