Electrodialytic method of growing water-soluble ionic crystal

Details Electrodialytic method of growing water-soluble ionic crystal Electrodialytic method of growing water-soluble ionic crystal

1986-02-11

1987-06-02

Chapman, Terryence

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204301, B01D 1302

Patent

active

046701176

ABSTRACT:
A solution of material for the desired crystal is filled in a growth tank having two ion-exchange membranes which define a crystal growth vessel between them and two side vessels on opposite sides of the crystal growth vessel, and the growth tank is placed in an outer tank while filling a fluid therebetween. During electrodialysis in the growth tank, the crystal growth vessel solution temperature T.sub.c, the side vessel solution temperature T.sub.o, and the fluid temperature T.sub.w between the tanks are controlled so as to keep the conditions of T.sub.o >T.sub.c >T.sub.w.

REFERENCES:
patent: Re28192 (1974-10-01), Schulz
patent: 3489665 (1970-01-01), Chandler
patent: 3502556 (1970-03-01), Chandler
patent: 4454012 (1984-06-01), Bachot et al.

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