Method for removing mineral slimes from kaolin clay

Details Method for removing mineral slimes from kaolin clay Method for removing mineral slimes from kaolin clay

1990-06-07

1992-07-07

Hruskoci, Peter

Classifying, separating, and assorting solids

Precedent preparation of items or materials to facilitate...

Selective differentiation

423118, 501146, B03B 104

Patent

active

051280272

ABSTRACT:
The invention is directed to a method for reducing the viscosity and increasing the brightness of a kaolin clay by removal of mineral slimes having a particle size of less than about 0.2 micron. The process includes reflocculating an aqueous clay slurry by the addition of an overdose of dispersing agent. The reflocculated slurry is aged and dewatered by fractionation.

REFERENCES:
patent: 3371988 (1968-03-01), Maynard et al.
patent: 3661515 (1972-05-01), Iannicelli et al.
patent: 3857781 (1974-12-01), Maynard
patent: 4018673 (1977-04-01), Hughes et al.
patent: 4088732 (1978-05-01), Maynard et al.
patent: 4604369 (1986-08-01), Shi
patent: 4916094 (1990-04-01), Salinas

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