Mineral fillers

Details Mineral fillers Mineral fillers

1978-03-29

1979-11-13

Hart, Charles N.

Liquid purification or separation

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

Responsive to fluid flow

106 72, 106288B, 209 5, B01D 2101

Patent

active

041742796

ABSTRACT:
In a method of dewatering by pressure filtration an aqueous suspension of a clay containing a small proportion of particles having an equivalent spherical diameter smaller than 1 micron, the improvement which comprises treating the aqueous suspension of the clay, prior to dewatering by pressure filtration at a pressure in excess of 150 pounds per square inch, with a water-soluble polyelectrolyte flocculant having a high density of positive charges.

REFERENCES:
patent: 3663461 (1972-05-01), Witt
patent: 3738945 (1973-06-01), Panzer et al.
patent: 3753902 (1973-08-01), Stettler
patent: 3855299 (1974-12-01), Witt
patent: 4076548 (1978-02-01), Bundy et al.

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