One-stage flotation purification of NaOH

Details One-stage flotation purification of NaOH One-stage flotation purification of NaOH

1979-06-14

1981-07-07

Cuchlinski, Jr., William A.

Chemistry: physical processes

Physical processes

209164, 210703, B03D 102

Patent

active

042773318

ABSTRACT:
A process for purifying an aqueous solution of NaOH by removing suspended NaCl and Na.sub.2 SO.sub.4 impurities therefrom comprising bubbling a gas into the impurity-containing NaOH solution at a temperature above 16.degree. C. and up to about 36.degree. C.

REFERENCES:
patent: 1430182 (1922-09-01), Peck
patent: 3772190 (1973-11-01), Eisenmann
patent: 3784468 (1974-01-01), Garcia
patent: 4065270 (1977-12-01), Nakaya et al.
Hubel et al., "Removal of Salt From Caustic Soda Produced By Diaphragm Cells", Canadian Chemistry and Metallurgy, p. 52 Mar., 1933.

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