Method and system for reclaiming waste hydrocarbon from tailings using solvent sequencing
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United States of America Patent
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Jun 4, 2013
Grant Date -
Sep 1, 2011
app pub date -
Aug 30, 2010
filing date -
Oct 27, 2009
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Abstract
A method and system for extracting hydrocarbon products from waste tailings of a froth flotation unit and a paraffinic froth treatment process are provided. Bitumen and asphaltenes from the waste tailings are extracted using a serial addition of an aromatic solvent, followed by a polar-non-polar solvent. The method and system divert valuable hydrocarbons from tailings ponds. The hydrocarbon product can be used as a coating material or an emulsion fuel, for example.
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