Method removing radioactivity from kaolin

Details Method removing radioactivity from kaolin Method removing radioactivity from kaolin

1975-06-19

1978-03-07

Halper, Robert

Classifying, separating, and assorting solids

Precedent preparation of items or materials to facilitate...

Selective differentiation

209155, 210 54, 423118, B03D 300

Patent

active

040778746

ABSTRACT:
A method of reducing the radioactivity found in naturally occurring kaolins to about 40% below its native value, and the leachable radiogenic components to less than 20%. This reduction is achieved by removing from the kaolin particles of a size less than 0.5 microns. This removal may be carried out by gravitational settling, flocculation of non-colloidal particles, or acid leaching.

REFERENCES:
patent: 1791959 (1931-02-01), Feldenheimer
patent: 2509585 (1950-05-01), Brown
patent: 2981630 (1961-04-01), Rowland
patent: 3020231 (1962-02-01), Colwell
patent: 3147218 (1964-09-01), Booth
patent: 3303184 (1967-02-01), Nordgren
patent: 3692671 (1972-09-01), Recht
patent: 3808021 (1974-04-01), Maynard
patent: 3890045 (1975-07-01), Preteus

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