Process for producing pulverous selenium from raw selenium

Details Process for producing pulverous selenium from raw selenium Process for producing pulverous selenium from raw selenium

1977-12-07

1978-11-28

Custer, Jr., Granville Y.

Solid material comminution or disintegration

Processes

241 3, 241 17, 241 23, 423510, B02C 1900

Patent

active

041272358

ABSTRACT:
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.

REFERENCES:
patent: 2111112 (1938-03-01), Dudley
patent: 2409835 (1946-10-01), Clark et al.
patent: 2413374 (1946-12-01), Phillips et al.
patent: 2835561 (1958-05-01), Benz
patent: 4047939 (1977-09-01), Morrison

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