Process for producing pulverous selenium from raw selenium

C - Chemistry – Metallurgy – 01 – B

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C01B 19/00 (2006.01) B01J 2/02 (2006.01) B22F 9/04 (2006.01) C01B 19/02 (2006.01)

Patent

CA 1081435

PROCESS FOR PRODUCING PULVEROUS SELENIUM FROM RAW SELENIUM ABSTRACT OF THE DISCLOSURE A process for producing pulverous selenium from dried raw selenium by distillation, granulating the molten distillate, dripping it into water, grinding the granules, and drying the powder, in which the drying of the raw selenium before the distillation is by spray drying, the selenium granules being ground while in the form of an aqueous slurry, and the final drying of the ground selenium slurry being again effected by spray drying.

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