Methods for separating a feed material derived from a process for recovering bitumen from oil sands
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United States of America Patent
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Aug 1, 2017
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app pub date -
Jun 22, 2011
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Apr 9, 2009
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Abstract
Separation methods for producing an extract and a raffinate from a solvent extraction feed material, wherein the feed material is derived from a process for recovering bitumen from oil sands. The methods may include producing an intra-stage recycle component from an overflow zone of a solvent extraction stage and recycling the intra-stage recycle component to the solvent extraction stage, and/or the methods may include providing an underflow component withdrawal rate for a solvent extraction stage other than a final solvent extraction stage which is greater than an underflow component withdrawal rate for the final solvent extraction stage.
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