Extraction process

Mineral oils: processes and products – Products and compositions – Lubricating oils

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C10G 104

Patent

active

045334595

ABSTRACT:
In the extraction of bitumen oils from oil sands, the raw material is first slurried with a stream of hot water under conditions promoting the release of the bitumen oils without disintegration of clay in the raw material; the water to raw material is at least 1:1 by weight. The slurry is separated into an oil-rich component, a solids component, and a middlings component containing essentially water and fines with only minor proportions of oil and solids. The middlings component, after removal of the contained fines and the solids is recycled as a part of the slurrying water.

REFERENCES:
patent: 3969220 (1976-07-01), Anderson et al.
patent: 4225433 (1980-09-01), Liu et al.
patent: 4396498 (1983-08-01), Dente et al.
patent: 4402552 (1983-09-01), Baas et al.

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