Producing chromate substantially free of vanadium

Details Producing chromate substantially free of vanadium Producing chromate substantially free of vanadium

1977-10-11

1979-02-06

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423 53, 423 62, 423 71, 423 85, C01G 3714, C01G 3100, C01G 2300

Patent

active

041384660

ABSTRACT:
In the recovery of chromium from a residue containing chromate and vanadate, by oxidative decomposition of a chromium and vanadium-containing ore in the presence of an alkali at temperatures of about 600 to 1200.degree. C., and leaching such residue with water, the improvement which comprises adding titanium dioxide to the residue and heating, whereby upon leaching the chromium enters the water while the vanadium is substantially left in the residue.

REFERENCES:
patent: 1760788 (1930-05-01), Specketer et al.
patent: 1911396 (1933-05-01), Siklatvalla et al.
patent: 2045836 (1936-06-01), Coffelt
patent: 2496993 (1950-02-01), Goda
patent: 2583591 (1952-01-01), Perrin et al.
patent: 2839359 (1958-06-01), Dunning
patent: 3856512 (1974-12-01), Palmer et al.
patent: 3933972 (1976-01-01), Bauwens et al.

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