Process for the chlorination of oxidic materials

Details Process for the chlorination of oxidic materials Process for the chlorination of oxidic materials

C - Chemistry, Metallurgy

22

B

53/368

C22B 1/00 (2006.01) C01F 7/60 (2006.01) C01G 49/10 (2006.01) C22B 1/08 (2006.01) C22B 1/10 (2006.01)

Patent

CA 1214649

- 1 - ABSTRACT Treatment of oxidic materials In the fluidised bed chlorination of oxidic materials, for example minerals such as bauxite, tantalite, columbite, wolframite or scheelite, the separation of metal values giving vaporous chlorides at the reaction temperature is enhanced by maintaining a zone substantially free of chlorine in the fluidised bed, for example a zone at least 0.25m in depth measured from the expanded bed surface. A high aspect ratio bed and counter current movement of the bed matter and the chlorine within the bed are preferably used.

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