Process for preparing granular sodium silicates

Details Process for preparing granular sodium silicates Process for preparing granular sodium silicates

C - Chemistry, Metallurgy

01

B

C01B 33/32 (2006.01) B01J 2/00 (2006.01) B01J 2/22 (2006.01) C09C 1/28 (2006.01) C11D 3/08 (2006.01) C11D 3/12 (2006.01) C11D 11/00 (2006.01) C11D 17/00 (2006.01)

Patent

CA 2130613

The present invention relates to a process for preparing a compacted, granular sodium silicate which withstands abrasive effects, for example mechanical conveying without damage having an SiO2/Na2O molar ratio of 1.7 : 1 to 4.1 : 1, by first intimately mixing the sodium silicate having a median particle diameter of < 500 µm with a material increasing its hardness before converting it into pressed granules having particle sizes of 0.1 to 5 mm by compacting, comminution and screening.

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