Method for the production of finely divided particulate...

Details Method for the production of finely divided particulate... Method for the production of finely divided particulate...

C - Chemistry, Metallurgy

01

B

C01B 33/26 (2006.01) C01B 33/193 (2006.01) C01B 33/20 (2006.01) C04B 35/18 (2006.01)

Patent

CA 2044644

Abstract Production of siliceous precipitates, for example sodium aluminosilicates by decomposition of an alkali metal sulfite solution with a solution of sulfurous acid or a salt thereof. Precipitates having excellent properties are obtained and the co-produced aqueous phase is a solution of alkali metal sulfite which has utility in pulp and paper mills. The process is advantageously carried out in proximity to a pulp and paper making operation wherein the siliceous precipitate may be used as a paper making filler and the alkali metal sulfite solution may be used in the pulping process.

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