Method for removing ferrous iron from alkali metal aluminate liq

Details Method for removing ferrous iron from alkali metal aluminate liq Method for removing ferrous iron from alkali metal aluminate liq

1976-03-22

1978-04-11

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423122, 423600, 423140, C01F 706

Patent

active

040839257

ABSTRACT:
Sufficient anionic polyacrylamide having molecular weight of at least 2,800,000 is contacted with alkali metal aluminate liquor containing ferrous iron until a substantial proportion of the ferrous iron is precipitated, and said precipitate and liquor are separated. The process is particularly useful as an improvement in the Bayer process for preparing alumina from bauxite.

REFERENCES:
patent: 3390959 (1968-07-01), Sibert
patent: 3445187 (1969-05-01), Sibert
patent: 3716617 (1973-02-01), Clku et al.
patent: 3755531 (1973-08-01), Tsukawaki et al.

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