Recovery of metal values

Details Recovery of metal values Recovery of metal values

C - Chemistry, Metallurgy

22

B

53/370

C22B 3/00 (2006.01) B01D 15/00 (2006.01) C22B 1/00 (2006.01) C22B 7/00 (2006.01) C22B 47/00 (2006.01)

Patent

CA 1156052

"IMPROVEMENTS IN THE RECOVERY OF METAL VALUES" ABSTRACT The present process involves an improvement in the hydrometal- lurgical recovery of metal values Prom metal bearing sources such as ores and the like. The desired metal values are recovered by subjecting a metal bearing source to a reductive roast in a reducing atmosphere after having treated said source with at least one additive. Following the reductive roast the reduced metal bearing source is cooled and extracted by a leaching operation. The separation of various metal values in the metal bearing source may be effected by adding a solid adsorbent to the leach solution whereby selective metal ions are adsorbed thereon. The improvement in the present process comprises pretreating the solid adsor- bent prior to use thereof with an acid thereby increasing the loading capacity of the metal ions in the absorbents as well as kinetics of metal adsorption.

362517

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