Process for producing bentonite clays exhibiting enhanced solution viscosity properties
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United States of America Patent
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Sep 28, 1993
Issued Date -
N/A
app pub date -
Mar 11, 1992
filing date -
Sep 17, 1990
priority date (Note) -
Expired
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Abstract
A process for upgrading a crude bentonite ore such that it can be used advantageously to prepare unusually high aqueous solution viscosities. This sequence comprises initially subjecting the crude ore to a working or shearing stage, followed by a drying step to about a 5% moisture level. Na.sub.2 CO.sub.3 is then dry-blended with the material, and the sequence is completed by subjecting the mix to a pulverizing step.
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