Mineral oils: processes and products – Products and compositions – Lubricating oils
Patent
1975-05-27
1977-02-15
Gantz, Delbert E.
Mineral oils: processes and products
Products and compositions
Lubricating oils
210 83, C10G 104
Patent
active
040081460
ABSTRACT:
A method for reducing the sludge content of a retention pond associated with the hot water process for extracting bitumen from tar sands which comprises admixing a sludge stream containing at least 12% solids by weight with a hot water extraction process waste water stream containing at least 20% sand; settling the mixture in a settling zone to form an upper layer substantially reduced in mineral matter and a lower layer comprised of a sand-sludge mixture and dispersing said lower layer over a sand pile zone to provide additional sand layers thereon containing at least a part of the sludge in the interstices of said additional sand layers.
REFERENCES:
patent: 3392833 (1968-07-01), Baillie
patent: 3502566 (1970-03-01), Raymond et al.
patent: 3526585 (1970-09-01), Camp
Bain Frederick A.
Roberts John O. L.
Gantz Delbert E.
Great Canadian Oil Sands Limited
Hellwege James W.
Hess J. Edward
Johnson Donald R.
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