Lime feeding for bayer process

Details Lime feeding for bayer process Lime feeding for bayer process

C - Chemistry, Metallurgy

01

F

23/240

C01F 7/06 (2006.01)

Patent

CA 1082425

ABSTRACT OF THE DISCLOSURE An improved wet caustic process of the Bayer method for the extraction of alumina from bauxite containing amounts of both goethite and a monohydrated alumina wherein lime is added directly to a digestion zone in which the bauxite slurry is being heated to a digestion temperature of at least 225°C and a pressure of 26 - 40 atmospheres absolute.

305922

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