High density fused silica process and product
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United States of America Patent
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Mar 17, 1992
Grant Date -
N/A
app pub date -
Feb 13, 1990
filing date -
Feb 13, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of forming high density silica products, and the products formed therefrom, comprising the steps of: a) preparing a fused silica slip having a moisture content less than 25% by weight and fine silica particles of which about 90% are a size less than 55 microns; b) mixing the fused silica slip with coarse silica particles having a gram size greater than Tyler Mesh -4 to form a mixture having between 20-70% coarse particles; c) inserting the mixture into a mold of the product to be formed; d) vibrating the mold for a predetermined period of time sufficient to settle the coarse silica particles in the mold and to facilitate release of air bubbles from the mixture and hardening the mixture by drying to form a molded piece.
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