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TitleDateSubjectDescription
1 Low-temperature oil shale and tar sand extraction process1978-12-19low-temperature oil shale; low-temperature tar sand; extraction process; kerogen materials; crushed oil-shale; dekerosing; kerogen removalFertilizers and kerogen materials are extracted from crushed oil shale utilizing a low temperature dekerosing (kerogen removal) solvent phase followed by a second fertilizer extraction phase using water as solvent. Process control factors are effective in producing delamination of the crushed oil sh...
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