Dry, stackable tailings and methods for producing the same
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United States of America Patent
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Feb 25, 2014
Grant Date -
Dec 6, 2012
app pub date -
Aug 13, 2012
filing date -
Oct 13, 2004
priority date (Note) -
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Abstract
Methods for preparing solvent-dry, stackable tailings. The methods may include a primary leaching or extraction process that separates most of the bitumen from a material comprising bitumen and produces first solvent-wet tailings. The first solvent-wet tailings are washed with a second solvent that removes the first solvent from the tailings. Second solvent remaining in the tailings is removed to thereby produce solvent-dry, stackable tailings.
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