Freeze-thaw method for reducing mineral content of a clay-water

Details Freeze-thaw method for reducing mineral content of a clay-water Freeze-thaw method for reducing mineral content of a clay-water

1975-09-08

1977-04-19

Nozick, Bernard

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

62532, 159 4F, 159 48R, 159DIG5, 208 11LE, B01D 3518, C02B 102

Patent

active

040186822

ABSTRACT:
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.degree. 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.

REFERENCES:
patent: 2703782 (1955-03-01), Regan et al.
patent: 2780281 (1957-02-01), Reinert
patent: 3151054 (1964-09-01), Laying
patent: 3620776 (1971-11-01), Mishkin et al.
patent: 3751358 (1973-08-01), Elliott

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