Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1983-02-28
1984-04-24
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
423 27, 423 53, 423 54, 423 61, C01G 300, C01G 3900
Patent
active
044447337
ABSTRACT:
A hydrometallurgical process is provided for the recovery of molybdenum values from a molybdenum disulfide concentrate containing copper. The process comprises forming an aqueous slurry of finely divided molybdenum concentrate of carbonates and hydroxides of alkali metals, and pressure leaching the slurry in the presence of oxygen at an elevated temperature and pressure for a time sufficient to effect conversion of the contained molybdenum values to alkali metal molybdate and provide a residue containing copper oxide or basic copper carbonate from which copper is later recovered. The molybdenum values are recovered from solution by solvent extraction and the solvent thereafter stripped of the molybdenum as ammonium molybdenum using ammonium hydroxide. The molybdenum is recovered as crystals of ammonium molybdate by crystallization, e.g., by evaporating the stripping solution.
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Dresher et al., "Journal of Metals", Jun. 1956, pp. 794-800.
Bruno John D.
Huggins Dale K.
Laferty John M.
Amax Inc.
Carter Herbert T.
Ciomek Michael A.
Kalil Eugene J.
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