Method of purifying brine used in electrolysis by the amalgam pr

Details Method of purifying brine used in electrolysis by the amalgam pr Method of purifying brine used in electrolysis by the amalgam pr

1978-02-28

1979-01-02

Andrews, R. L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423158, 423166, 423170, 423199, 423551, 423552, 423555, 204 99, 204128, C01F 1146, C01C 500

Patent

active

041327594

ABSTRACT:
In the process for the production of chlorine and alkali metal hydroxide by electrolysis according to the amalgam process using calcium- and/or sulphate containing crude salt, the calcium and/or sulphate contents introduced into the brine circuit by the crude salt are removed from the brine by precipitation of the double salt Na.sub.2 SO.sub.4 . CaSO.sub.4. Small particles of glauberite may be introduced to the brine to initiate and accellerate precipitation.

REFERENCES:
patent: 2248137 (1941-07-01), Taylor et al.
patent: 3051637 (1962-08-01), Judice et al.

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