Recovery of alumina trihydrate in the bayer process

Details Recovery of alumina trihydrate in the bayer process Recovery of alumina trihydrate in the bayer process

C - Chemistry, Metallurgy

01

F

23/250

C01F 7/04 (2006.01) C01F 7/14 (2006.01) C01F 7/34 (2006.01)

Patent

CA 2014262

ABSTRACT RECOVERY OF ALUMINA TRIHYDRATE IN THE BAYER PROCESS In a Bayer process for production of aluminium alumina trihydrate cyrstals are formed in the pregnant liquor and are flocculated using a combination of dextran and synthetic polymer, usually homo- or copolymer of acrylic acid. The process is particularly advantageous where the liquor contains organic components such as humate and/or oxalate.

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