Process for producing high-purity alumina and hydraulic cement

Details Process for producing high-purity alumina and hydraulic cement Process for producing high-purity alumina and hydraulic cement

1978-09-18

1980-10-07

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

106103, 423119, C04B 736

Patent

active

042266327

ABSTRACT:
A low grade aluminum and silicon containing starting material is intimately mixed with limestone and the resultant mixture is fluidized. The fluidized mixture is preheated to a temperature of 700.degree. to 900.degree. C., then held at sintering temperature for 5 to 10 minutes. Aluminum may be recovered by extraction of the sintered powder so produced.

REFERENCES:
patent: 2242258 (1941-05-01), Noll
patent: 2452041 (1948-10-01), Elmore
patent: 3876749 (1975-04-01), Horvath et al.

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