USE OF MULTIVALENT INORGANIC ADDITIVES
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United States of America Patent
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Issued Date -
May 1, 2014
app pub date -
Aug 29, 2013
filing date -
Oct 26, 2012
priority date (Note) -
Abandoned
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Abstract
A process of dewatering tailings such as fluid fine tailings from oil sand extraction is provided comprising mixing the tailings with a sufficient amount of an additive comprising at least one multivalent cation, each multivalent cation being in an amount ranging from about 0.125% to about 0.25% and higher, up to or greater than the solubility limit of the at least one multivalent cation, and depositing the resulting mixture into a containment area to yield a non-segregating, rapidly cracking and dewatering deposit for reclamation and recycle water which can optionally be used in an oil sand bitumen extraction process.
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