Method for filtering solvent and tar sand mixtures

Details Method for filtering solvent and tar sand mixtures Method for filtering solvent and tar sand mixtures

1984-02-29

1985-09-03

Gantz, D. E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208 8LE, 210193, 210777, C10G 104

Patent

active

045390975

ABSTRACT:
A method for filtering spent tar sands from a bitumen and organic solvent solution comprises separating the solution into two streams wherein the bulk of the coarser spent tar sand is in a first stream and has an average particle size of about 10 to about 100 mesh and the bulk of the finer spent tar sand is in a second stream; producing a filter cake by filtering the coarser spent tar sand from the first stream; and filtering the finer spent tar sand from the second stream with the filter cake. The method is particularly useful for filtering solutions of bitumen extracted from bitumen containing diatomite, spent diatomite and organic solvent.

REFERENCES:
patent: 4448667 (1984-05-01), Karnofsky

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