FLOCCULENT ADDITION AND MIXING RATE FOR SEPARATING A SLURRY
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United States of America Patent
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Issued Date -
Jul 4, 2013
app pub date -
Jul 7, 2011
filing date -
Jul 9, 2010
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Abandoned
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Abstract
The invention concerns a method for separating solid and liquor components of a process slurry comprising solid material entrained in a liquor, said method comprising: (a) a pre-treatment step of adding a flocculent to the process slurry and mixing the flocculent and the slurry by selecting a higher extent of mixing in an early stage of said step than in a later stage of said step, and (b) a solid/liquor separation step of allowing separation of solid material, including aggregates of solid material, and liquor of said process slurry to produce process outputs of a clarified liquor and solid material with some entrained liquor. The invention also concernes a method and an apparatus for adding a flocculent to a process slurry.
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