Starch/cationic polymer combinations as coagulants for the mining industry
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United States of America Patent
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Mar 28, 2000
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app pub date -
Apr 15, 1999
filing date -
Sep 29, 1997
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Expired
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Abstract
A method for dewatering coal tailings, clean coal products and mineral slurries with an effective coagulating amount of a combination of a cationic polymer and a starch. A preferred cationic polymer is poly(dimethylaminoethylacrylate methyl chloride quaternary salt) and preferred starches are unmodified.
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