Recovery of oil from oil sands
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United States of America Patent
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-
Jul 6, 1982
Grant Date -
N/A
app pub date -
Jan 2, 1981
filing date -
Jan 2, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In the method of recovering oil from oil sand wherein the oil sand is tumbled in an aqueous alkaline solution to form a floating mass in which the oil is dispersed and the oil then recovered from the mass, the step of including in the aqueous alkaline solution 0.3 to 100 parts per million of a water-soluble member of the group consisting of anionic polyelectrolytes having a low molecular weight, acrylic acid, mannuronic acid and the sodium salts thereof.
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