Method of producing a pure aluminiumoxide from solutions...

Details Method of producing a pure aluminiumoxide from solutions... Method of producing a pure aluminiumoxide from solutions...

C - Chemistry, Metallurgy

01

F

23/167

C01F 7/56 (2006.01) C01F 7/22 (2006.01) C01F 7/30 (2006.01)

Patent

CA 1136379

A B S T R A C T Method of producing aluminiumchloride with low contents of iron from solutions containing ions of aluminium and iron by precipitation of aluminiumchloride by means of hydrochloric gas where the solution from which the aluminiumchloride is precipitated contain at least 0,1 g Fe/1 which solution has been formed by leaching of a natural mineral raw material or artifically produced aluminium-containing raw material by leaching with hydrochloric acid and/or sulphuric acid, respectively a mixture of such acids. The produced aluminium- chloride may be transformed to aluminiumoxide by calcination.

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