METHOD OF CONCENTRATION OF ELECTROLYTICAL CAUSTIC ALKALI Russian patent published in 1995 - IPC

Abstract SU 1835790 A1

FIELD: chemical technology. SUBSTANCE: method involves evaporation of parental alkali at the first stage, salt separation, evaporation of alkali solution at the second stage and its cooling. Separation of production alkali from precipitate is carried out on the filter, and repulpation of precipitate cooled up to 30-40 C is performed with the parental alkali. Separation of washing solution from precipitate is carried out using filtering centrifuge. EFFECT: improved method of concentration. 1 dwg

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SU 1 835 790 A1

Authors

Leverash V.I.

Gonionskij V.Ts.

Ronkin V.M.

Dates

1995-04-30—Published

1990-03-30—Filed