Process of making superfine amorphous high structural silicic ac

Details Process of making superfine amorphous high structural silicic ac Process of making superfine amorphous high structural silicic ac

1972-09-21

1977-01-04

Stern, Edward

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423355, 106288B, 260 291R, 426 97, 424357GP, C01B 3318, C01B 3312

Patent

active

040013790

ABSTRACT:
Superfine amorphous, high structure silicic acid is made by subjecting the components in the precipitation reaction, that is, an acid or acidic substance and an alkali-metal silicate solution to a shearing force during the alkaline phase of the precipitation reaction, the shearing force being applied by passing the reaction mass in a continuous flow through a dispersing device and the dispersing device being operated with an hourly throughput frequency of at least 10h.sup.- .sup.1, the said frequency being determined as the ratio of the performance of the dispersing device to the initial volume of the reaction mass.
The high structure silicic acid is particularly useful as carrier and filler for pesticides, animal feed additives and as matting agent for lacquers.

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John H. Perry's "Chemical Engineers Handbook," 4th Ed., 1963, Chapter 8, p. 41, McGraw-Hill Book Co., Inc., New York City, N.Y.

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