Chemistry: physical processes – Physical processes – Crystallization
Patent
1992-08-04
1993-08-17
Straub, Gary P.
Chemistry: physical processes
Physical processes
Crystallization
23313R, 264 13, 423505, B01D 900
Patent
active
052364666
ABSTRACT:
A method for fast cooling granules of low melting point, subliming substances obtained by a prilling process. The granules are in the shape of a plurality of droplets having diameters of 0.5. to 4 mm and are formed from a prilling column with the droplets partially solidified by means of a countercurrent air cooling. The partially solidified particles are received in an inert liquid in which the substance is insoluble. The liquid also has a lower boiling point than the melting point of this substance. The solidified particles are separated from the liquid before being completely cooled so that their remaining heat content evaporates any residual liquid from the particles.
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Chilean Nitrate Corporation
Straub Gary P.
Vanoy Timothy C.
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