Chemistry: physical processes – Physical processes – Crystallization
Patent
1991-03-13
1992-07-07
Breneman, R. Bruce
Chemistry: physical processes
Physical processes
Crystallization
422245, C30B 708, C30B 3500
Patent
active
051279215
ABSTRACT:
A method and apparatus are provided for superpurifying crystallizable substances to a purity level of 99.999 percent. Included is controlling the reflux ratio by controlling and/or metering transfers of crystals and mother liquor at selected locations and by maintaining a steady state of transfers between a plurality of stages that carry out similar operations.
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