Method of preparing loosely aggregated 200-500 millimicron silic

Details Method of preparing loosely aggregated 200-500 millimicron silic Method of preparing loosely aggregated 200-500 millimicron silic

1975-09-10

1977-09-20

Cooper, Jack

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423339, C01B 3312

Patent

active

040497810

ABSTRACT:
A loosely aggregated 200-500 millimicron primary particle size silica can be produced by a silicate neutralization technique. The process consists of neutralizing an alkali metal silicate solution by addition to an ammoniated acetic acid or carbonic acid mixture. These particles are loosely aggregated to an average particle size of about 1 micron. These particles are readily deaggregated in a fluid energy mill. A very convenient technique is to dry and deaggregate in a fluid energy mill in a single step.

REFERENCES:
patent: 2856268 (1958-10-01), Young
patent: 3165379 (1965-01-01), Schwartz
patent: 3208823 (1965-09-01), Baker et al.
patent: 3367742 (1968-02-01), Marotta et al.
patent: 3787561 (1974-01-01), Acker et al.
patent: 3798174 (1974-03-01), Acker et al.
patent: 3862104 (1975-01-01), Witt

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