Effective reductive bleaching of mineral slurries
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United States of America Patent
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Jan 19, 2010
Grant Date -
Aug 23, 2007
app pub date -
Mar 22, 2005
filing date -
Mar 23, 2004
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Abstract
Disclosed herein are a method of reductively bleaching a mineral slurry comprising adding in the mineral slurry an effective amount of a formamidine sulfinic acid (FAS) and an effective amount of a borohydride to reductively bleach the mineral slurry, compositions comprising a mineral slurry, a FAS, and a borohydride, and final products comprising a mineral obtained by the method disclosed herein.
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