Process for recovery of alumina from high-silica ore

Details Process for recovery of alumina from high-silica ore Process for recovery of alumina from high-silica ore

1975-10-20

1977-08-23

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423119, 423111, 423131, C01F 706, C01F 704

Patent

active

040440958

ABSTRACT:
Back reactions of dissolved alumina from a high caustic-lime digest of anorthosite and other alumina-containing siliceous materials can be eliminated or mitigated by control of particle size of digestible material; and time and temperature of separation of the alumina-bearing liquid from the solid residues. In one embodiment the back reaction is further controlled by adjustment of the caustic concentration of the digest effluent.

REFERENCES:
patent: 1747759 (1930-02-01), Done et al.
patent: 2244194 (1941-06-01), Haglund
patent: 2559653 (1951-07-01), Mooney
patent: 3198622 (1965-08-01), Herzog et al.
patent: 3241910 (1966-03-01), Johnson
Maslenitiski et al., "Izd. Metalurgiya", Chap. I, Moscow, 1969.
Ponomarev et al., "Tavetnye Metally", 1957, pp. 45-51.
Ponomarev et al., "Report of Higher Educational Institutions, Nonferrous Metallurgy", No. 2, 1958, pp. 93-100.

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