Method for removing ferrous iron from alkali metal aluminate...

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

C - Chemistry, Metallurgy

01

F

23/239

C01F 7/06 (2006.01) C01F 7/47 (2006.01)

Patent

CA 1082883

METHOD FOR REMOVING FERROUS IRON FROM ALKALI METAL ALUMINATE LIQUOR Abstract Of The Disclosure 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.

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