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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