Method for treating shale
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United States of America Patent
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May 26, 1987
Grant Date -
N/A
app pub date -
Oct 13, 1983
filing date -
Oct 13, 1983
priority date (Note) -
Expired
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Abstract
A method for producing a kerogen concentrate from oil shale comprises treating shale with an aqueous caustic treating solution to produce a shale product of substantially transformed mineral content, and then treating the shale product with an aqueous acid solution to produce a kerogen concentrate. The acid solution extracts minerals from the shale product to lower the ash content of the kerogen concentrate. A spent acid solution containing the extracted minerals can be treated to recover minerals therefrom.
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