Process for the production of alkali metal chlorate

Details Process for the production of alkali metal chlorate Process for the production of alkali metal chlorate

C - Chemistry, Metallurgy

25

B

C25B 1/24 (2006.01) C25B 1/26 (2006.01)

Patent

CA 2121628

The invention relates to a process for electrolytic production of alkali metal chlorate where the demand of pH-adjusting chemicals is largely covered by integrated production of acid and alkali metal hydroxide. The process consists in electrolysing a partial flow of chlorate electrolyte produced, in a cell provided with a separator, for producing a catholyte containing alkali metal hydroxide and an anolyte containing hydrochloric acid. The catholyte and the anolyte are used in alkalisation and acidification in the chlorate process, thus significantly reducing the admission of impurities via externally produced chemicals.

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