Process for recovering copper and molybdenum from low grade copp

Details Process for recovering copper and molybdenum from low grade copp Process for recovering copper and molybdenum from low grade copp

1984-01-03

1984-10-23

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204108, 75101R, 75101BE, 75115, 75117, 75109, 75121, 423 54, 423 56, C25C 112

Patent

active

044786980

ABSTRACT:
Low grade copper concentrates containing molybdenum are roasted under conditions to form copper and molybdenum compounds which are soluble in dilute sulfuric acid solutions.
Molybdenum is then recovered by solvent extraction from these solutions and further precipitated as ammonium molybdate, while copper can be electrowinned or precipitated from the raffinate.
Overall recovery efficiencies are 96% for copper and 84% for molybdenum.

REFERENCES:
patent: 3653815 (1972-04-01), Skarbo
patent: 3834893 (1974-09-01), Queneau et al.
patent: 4444733 (1984-04-01), Laferty et al.
Van den Steen, et al., "Hydrometallurgical Recovery of Molybdenum from Low Grade Molybdenite," presented at Molybdenum Symposium, Vancouver, B.C. Canada, Aug. 1977.

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