Draft tube, direct contact cryogenic crystallizer

Details Draft tube, direct contact cryogenic crystallizer Draft tube, direct contact cryogenic crystallizer

1994-07-15

1995-03-07

Breneman, R. Bruce

Single-crystal, oriented-crystal, and epitaxy growth processes;

Apparatus

For crystallization from liquid or supercritical state

117 11, 117200, C30B 708

Patent

active

053948270

ABSTRACT:
A direct contact cryogenic crystallizer having a vertically oriented draft tube into which cryogenic fluid is injected at a high velocity along with warm gas and through which a crystal slurry is drawn for subsequent cooling and agitation for the production of crystals.

REFERENCES:
patent: 3599701 (1971-08-01), Mollerstedt et al.
patent: 3873275 (1975-03-01), Bennett
patent: 3895920 (1975-07-01), Garrett
patent: 4022820 (1977-05-01), Johnson
patent: 4144308 (1979-03-01), Johnson
patent: 4429535 (1984-02-01), Featherstone
patent: 4479351 (1984-10-01), Awerbuch et al.
patent: 4689146 (1987-08-01), Kasai et al.
Crystal Growth, pp. 542,543, Direct Contact Cooling.

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