Process for stabilising anhydrous sodium metasilicate, and...

Details Process for stabilising anhydrous sodium metasilicate, and... Process for stabilising anhydrous sodium metasilicate, and...

C - Chemistry, Metallurgy

11

D

134/16

C11D 3/08 (2006.01) C01B 33/32 (2006.01)

Patent

CA 1116041

Abstract of the Disclosure It is known to treat compositions containing anhydrous sodium metasilicate with liquid spray to reduce dust formation. Such spray treatment does not preferentially act upon the smaller dust forming particles, and requires costly equipment. The present invention overcomes this drawback by providing a process for stabilising anhydrous sodium metasilicate, wherein said anhydrous sodium metasilicate is treated with at least one additive capable of liberating molecules of water at a temperature below the melting point of sodium metasilicate pentahydrate so as to convert from about 1 to 20 % by weight, of anhydrous metasilicate into metasilicate pentahydrate.

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