METHOD OF OBTAINING PRECIPITATED SILICON DIOXIDE WITH APPLICATION OF MIXER OR EXTRUDER Russian patent published in 2016 - IPC C01B33/193

Abstract RU 2578302 C1

FIELD: chemistry.

SUBSTANCE: method includes interaction of silicate with acidifying substance with obtaining suspension of precipitated silicon dioxide (S1), extraction of sediment, milling said sediment with obtaining suspension of precipitated silicon dioxide (S2) and drying said suspension. Milling is realised by mixing with application of double-screw mixer or by extrusion, with content of dry substance in sediment, subjected to milling, constituting 25% by weight, preferably 25-40%.

EFFECT: increase of prime yield.

16 cl, 3 ex

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RU 2 578 302 C1

Authors

Neve Silven

Pino Ann-Lor

Zhost Filipp

Dates

2016-03-27—Published

2013-03-21—Filed