OIL SANDS FLUID FINE TAILINGS DEWATERING USING ADDITIVES
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United States of America Patent
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Issued Date -
Oct 27, 2016
app pub date -
Oct 16, 2015
filing date -
Apr 24, 2015
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Abstract
A process of treating and dewatering tailings is provided comprising mixing the tailings with a sufficient amount of a flocculant, a coagulant, or both, to promote flocculation/aggregation of the fine solids in the tailings; mixing a sufficient amount of a hydrophobicity modifying agent with the thus treated tailings to modify the hydrophobicity of the flocculated/aggregated fine solids; and subjecting the resulting mixture to liquid solids separation to yield a solids product for reclamation and a liquid product for recycling or disposal.
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