Process for producing alumina and ferric oxide from aluminium ca

Details Process for producing alumina and ferric oxide from aluminium ca Process for producing alumina and ferric oxide from aluminium ca

1981-04-08

1982-12-28

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423128, 423132, 423139, C01F 722, C01F 726

Patent

active

043661297

ABSTRACT:
The invention concerns a process for the preparation of alumina and ferric oxide from low-grade aluminium and iron carriers. The processes, in addition to conventional technological steps, comprises the steps of dissolving the iron content of a ground, mineral material in an aqueous hydrochloric acid solution containing 200 to 420 g./lit. of hydrochloric acid at 90.degree. to 130.degree. C., eliminating the iron from the slurry of from a solution obtained by filtration of the slurry, with an anion exchange resin or semipermeable membrane or cloth, continuously or discontinuously, eluting the iron from the ion exchange resin and recycling hydrochloric acid and sulfuric acid in a closed system.

REFERENCES:
patent: 1132537 (1915-03-01), Thompson
patent: 2376696 (1945-05-01), Hixson et al.
patent: 3079228 (1963-02-01), Skay
patent: 4239735 (1980-12-01), Eisele et al.
Reents, "Industrial & Engineering Chem.", Jan. 1955, pp. 75-77, vol. 47.

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