Process for purifying solid substances

Details Process for purifying solid substances Process for purifying solid substances

1978-05-19

1980-11-04

Bernstein, Hiram H.

Chemistry: physical processes

Physical processes

23295R, 156DIG64, 62532, B01D 904

Patent

active

042317550

ABSTRACT:
A process for purifying solid substances by melting and subsequent resoliication, wherein a melted bath of the solid substance is formed, a roller is placed in the bath so that a first portion of its surface is in contact with the melted substance, and the surface of the roller is cooled to a temperature below the melting point of the solid substance. The cooled roller is rotated in the melted substance to collect a solidified film of the substance on the roller surface. A second portion of the roller surface is passed through a heated zone at a temperature above the melting point of the solid substance, so that the solidified film is remelted and collected in an appliance.

REFERENCES:
patent: 290016 (1883-12-01), Fairfield
patent: 2651922 (1953-09-01), Graham
patent: 2904412 (1959-09-01), McBride
patent: 3400548 (1968-09-01), Drayer
patent: 3966445 (1976-06-01), Adams

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