Methods for purifying kaolin clays using reverse flotation, high brightness kaolin products, and uses thereof
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United States of America Patent
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Aug 6, 2013
Grant Date -
Jan 6, 2011
app pub date -
Mar 6, 2009
filing date -
Mar 9, 2008
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Abstract
Disclosed herein are methods for removing discoloring impurities, such as carbon impurities, particularly graphite, from kaolin clay to enhance the brightness of the kaolin clays. The methods include reverse flotation processes. Also disclosed herein are high brightness kaolin products, and the uses thereof.
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