Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Reexamination Certificate
2007-01-30
2007-01-30
Bos, Steven (Department: 1754)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
C423S027000, C423S055000
Reexamination Certificate
active
10307412
ABSTRACT:
A method of treatment or purification of a molybdenum concentrate also containing copper, comprises the step of subjecting the molybdenum concentrate to pressure oxidation in the presence of oxygen and a feed solution containing copper (e.g. CuSO4) and halide (e.g. CuCl2) to produce a pressure oxidation solution containing copper and a solid residue containing molybdenum. The pressure oxidation solution may be combined with feed solution to a second pressure oxidation in which a copper concentrate is treated for the recovery of copper therefrom.
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patent: 3694147 (1972-09-01), Chen et al.
patent: 3714325 (1973-01-01), Bloom et al.
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patent: WO 96 12675 (1996-05-01), None
Database WPI, Section Ch, Week 197830, Derwent Publications Ltd., London, GB; AN 1978-54789A, XP002243557, Anonymous: “Removal of copper from molybdenum oxide, e.g. calcined molybdenite-by chemical treatment, e. g. leaching with ferric chloride, or magnetic sepn.” Abstract & Research Disclosure, vol. 171, No. 063, Jul. 10, 1978 Emsworth, GB.
Bos Steven
Cominco Engineering Services Ltd.
de Kock Elbie R.
Russell Reyneke Law Corp.
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