Method for controling uniformity of colloidal silica particle size
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United States of America Patent
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Jun 14, 2005
Issued Date -
N/A
app pub date -
Nov 30, 2002
filing date -
Sep 1, 2000
priority date (Note) -
Expired
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Abstract
A system and method are disclosed for producing uniform size silica particles by the steps of providing preformed colloidal silica particles having a surface area, adding an alkali metal silicate and a cation exchange resin to produce a quantity of feed silica at a feed rate which is less than a nucleation rate, and increasing the feed rate as the feed silica is added wherein the feed rate is less than the nucleation rate.
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