Chemistry of inorganic compounds – Halogen or compound thereof – Binary compound containing metal
Patent
1982-07-21
1984-08-14
Thomas, Earl C.
Chemistry of inorganic compounds
Halogen or compound thereof
Binary compound containing metal
423126, 423132, 423137, 423496, 204 67, C01F 760, C25C 306
Patent
active
044656599
ABSTRACT:
An improved method of producing anhydrous aluminum chloride via aluminum chloride hexahydrate is provided. In a preferred embodiment the method is incorporated into a process for producing aluminum from aluminous ores, and particularly from domestic ore sources comprising (1) acid leaching an aluminous ore to produce aluminum chloride hexahydrate (ACH); (2) calcining the ACH to a specific temperature of above about 450.degree. C. to produce highly reactive aluminous particles containing high residual chloride and low residual hydrogen levels; (3) reductively chlorinating the calcined ACH at a low temperature to produce anhydrous aluminum chloride suitable for electrolytic reduction; and (4) electrolytically reducing the anhydrous aluminum chloride in a fused salt to produce aluminum metal and chlorine which is recycled to step (3).
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Cambridge Edward L.
Loutfy Raouf O.
Withers James C.
Atlantic Richfield Company
Thomas Earl C.
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