Process for the extraction of solid material from solution by cr

Details Process for the extraction of solid material from solution by cr Process for the extraction of solid material from solution by cr

1981-08-06

1984-03-06

Bernstein, Hiram H.

Chemistry: physical processes

Physical processes

Crystallization

B01D 902

Patent

active

044351828

ABSTRACT:
A method of obtaining crystals of a solute in which the fresh solution is initially cooled by contacting with a mother liquor containing crystals below the desired grain size to produce a mother phase in a state of incipient crystallization. The latter is crystallized with or without further cooling by passing it through an elongated crystallizer body with angularly adjoining portions swung around an offset axis and having cooled walls. The resulting slurry is then continuously filtered to separate out the crystals of the required size and form the mother liquor containing particles below the required size.

REFERENCES:
patent: 2757216 (1956-07-01), Speed et al.
patent: 2898271 (1959-08-01), Findlay
patent: 3388893 (1968-06-01), Hall
patent: 3599701 (1971-08-01), Mollerstedt
patent: 3900292 (1975-08-01), Fairchild
patent: 4025573 (1977-05-01), Hathway
patent: 4159194 (1979-06-01), Steward

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