C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
53/236, 23/245
C01F 7/20 (2006.01) C01F 7/22 (2006.01)
Patent
CA 1154233
D-64/B-1/011579 7875/01162 METHOD FOR THE MANUFACTURE OF PURE ALUMINUM OXIDE FROM ALUMINUM ORE Abstract of the Disclosure: A process for obtaining pure aluminum oxide (Al2O3) from siliceous aluminum ore is disclosed. The aluminum ore is digested in a hydrochloric acid solution to obtain aluminum chloride, the aluminum chloride is crystallized as the hexa- hydrate, the aluminum chloride hexahydrate is purified and, subsequently, decomposed to give pure aluminum oxide and secondary products. The mother liquor of the crystallization step and the secondary products of the decomposition step are recycled.
320414
Belsky Milan
Schierholt Joseph
Schwind Albert F.
Winkhaus Gunter
Smart & Biggar
Standard-Messo Duisburg Gesellschaft Fur Chemietechnik M.b.h. &
Vereinigte Aluminium-Werke Ag
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