Method for the removal of organic substances from alkali metal a

Details Method for the removal of organic substances from alkali metal a Method for the removal of organic substances from alkali metal a

1979-02-12

1980-07-29

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423130, 423600, 423121, C01F 706, C01F 746

Patent

active

042150949

ABSTRACT:
In the production of alumina from bauxite by the Bayer process, the present invention provides an improvement for effectively and economically removing organic substances from a circulating alkali aluminate solution by contacting the aluminate solution containing organic substances with molecular oxygen gas or a molecular oxygen-containing gas in the presence of copper ions as a catalyst at an elevated temperature, thereby oxidizing the organic substances, adding a chemical substance to the resulting aluminate solution which reacts with copper ions to deposit a water-insoluble precipitate, and separating the precipitate from the solution, and recycling the precipitate as a copper source to the above-mentioned wet oxidation procedure.

REFERENCES:
patent: 3372985 (1968-03-01), Roberts et al.
patent: 3512926 (1970-05-01), Mercier et al.
patent: 3649185 (1972-03-01), Sato et al.
patent: 4046855 (1977-09-01), Schepers et al.
patent: 4101629 (1978-07-01), Mercier et al.

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