Recovery of Cr.sub.2 O.sub.3 from a chromium bearing solution

Details Recovery of Cr.sub.2 O.sub.3 from a chromium bearing solution Recovery of Cr.sub.2 O.sub.3 from a chromium bearing solution

1978-11-30

1980-10-28

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423 56, 423 58, 423 61, 423127, 75101BE, C01G 37033

Patent

active

042306779

ABSTRACT:
Method for the recovery of high purity Cr.sub.2 O.sub.3 from a Na.sub.2 CrO.sub.4 or Na.sub.2 Cr.sub.2 O.sub.7 solution by producing (NH.sub.4).sub.2 CrO.sub.4 by solvent extraction, evaporating the aqueous (NH.sub.4).sub.2 CrO.sub.4 and igniting the resulting solids to provide high purity Cr.sub.2 O.sub.3.

REFERENCES:
patent: 2612435 (1952-09-01), Perrin et al.
patent: 2839359 (1958-06-01), Dunning
patent: 3137541 (1964-06-01), Cooke
patent: 3819800 (1974-06-01), Shaffer et al.
patent: 3856916 (1974-12-01), Lafrancois et al.
patent: 3856917 (1974-12-01), Texier et al.
patent: 4029734 (1977-06-01), Stauter et al.
patent: 4040860 (1977-08-01), Mansmann et al.

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