Method for removing organic substances from caustic aluminate li

Details Method for removing organic substances from caustic aluminate li Method for removing organic substances from caustic aluminate li

1986-04-03

1987-05-26

Carter, H. T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423121, 423122, C01F 706

Patent

active

046684867

ABSTRACT:
The present invention is directed to a method for removing organic substances from aluminate liquors of the Bayer process. The method comprises the steps of contacting the liquor with an oxygen containing gas under elevated pressure in the presence of metallic ions acting as a catalyst to oxidize the organic substances, precipitating the metallic ions jointly with aluminum hydroxide, separating the precipitate from the oxidized liquor and recycling the precipitated aluminum hydroxide containing the metallic ions into the oxidation step as a catalyst carrier.

REFERENCES:
patent: 4046855 (1977-09-01), Sehepers et al.
patent: 4101629 (1978-07-01), Mercier
patent: 4215094 (1980-07-01), Inao et al.
patent: 4263261 (1981-04-01), Yamada et al.
patent: 4280987 (1981-07-01), Yamada et al.
patent: 4581208 (1986-04-01), The et al.

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