Process for the extraction of alumina from aluminum-...

Details Process for the extraction of alumina from aluminum-... Process for the extraction of alumina from aluminum-...

C - Chemistry, Metallurgy

01

F

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C01F 7/26 (2006.01) C01F 7/20 (2006.01) C01G 49/06 (2006.01)

Patent

CA 1082884

PROCESS FOR THE EXTRACTION OF ALUMINA FROM ALUMINUM-CONTAINING SILICATES Abstract of the Disclosure A process for the extraction of alumina from aluminum-containing silicates is dis- closed. The process comprises acid leaching of the raw material, iron extraction, pre- cipitation of the aluminum fraction as the aluminum chloride hexahydrate, removal of sodium chloride and calcination to alumina. The process can be made continuous with substantial regeneration and recycling of process components.

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