METHOD FOR PRODUCING SiO GRANULATE Russian patent published in 2016 - IPC C01B33/18

Abstract RU 2604617 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing SiO₂ granules by freezing and re-thawing SiO₂ suspension, wherein separation of liquid and sediment composed of agglomerated SiO₂ particles occurs in course of thawing, liquid removed is decanted and residual moisture in sediment is removed by a drying step with formation of SiO₂ granules.

EFFECT: according to invention, alkali metal-free bases in form of nitrogen hydrides are added to suspension to set pH greater than 7.

16 cl, 2 dwg

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RU 2 604 617 C2

Authors

Zukh Mario

Shetts Gerkhard

Langner Andreas

Dates

2016-12-10—Published

2013-04-25—Filed