Freeze-thaw method for reducing mineral content of a...

Details Freeze-thaw method for reducing mineral content of a... Freeze-thaw method for reducing mineral content of a...

B - Operations, Transporting

01

D

196/24, 161/35

B01D 35/18 (2006.01) C02F 1/02 (2006.01) C02F 11/20 (2006.01) C10C 3/00 (2006.01) C10G 1/04 (2006.01)

Patent

CA 1044590

ABSTRACT OF THE DISCLOSURE A method for reducing the clay content of a colloidal clay-water mixture which comprises combining the mixture with air at superatmospheric pressure and thereafter expelling the mixture in the form of small droplets at atmospheric pressure at a temperature below 32°F. to form synthetic snow. Thereafter synthetic snow can be melted to recover water containing reduced mineral content. The invention is particularly applicable to sludge associated with the hot water extraction method for recovering bitumen from tar sands.

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