C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
23/247
C01F 7/06 (2006.01) C01F 7/02 (2006.01)
Patent
CA 1168420
ABSTRACT OF THE DISCLOSURE Disclosed is a method for processing nephelite to alumina, comprising the steps of blend preparation, blend sintering, and hydrochemical treatment of the resultant sinter cake, and characterised in that milling of the feedstock ma- terials in the blend preparation step is combined with simul- taneously drying them by the use of exhaust gases from the blend sintering stage while in the blend sintering step heating of the blend to 900 to 950°C is effected within 1 to 3 minutes with the blend in a fluidized state and the desiliconization and causticization slurries resulting from the hydrochemical treat- ment step are recycled to the blend sintering stage. The method may be used for producing alumina from nephelite having an alum- ina content of 20 to 30% by weight.
364768
Badaliants Khoren A.
Khodorov Evgeny I.
Korolkov Alexandr V.
Kostin Ivan M.
Telyatnikov Garry V.
Marks & Clerk
Vsesojuzny Nauchno-Issledovatelsky I. Proektny Institut Aljumini Mag Nievoi I. Elektrodnoi Promyshlennosti
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