Method of beneficiating kaolin clay utilizing ammonium salts

Details Method of beneficiating kaolin clay utilizing ammonium salts Method of beneficiating kaolin clay utilizing ammonium salts

1984-08-27

1986-08-05

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Clay containing

501146, 423118, 209 5, C04B 3304

Patent

active

046043691

ABSTRACT:
A method of enhancing the brightness (beneficiating) of kaolin clays by removing titanium impurities is disclosed. The claimed method is a selective flocculation process wherein clay solids are blunged (dispersed) in water together with a dispersing agent and an ammonium salt conditioning agent. When a water-dispersible anionic polymer is added to the dispersed and conditioned clay suspension, titanium flocs are separated from the suspension yielding a whiter kaolin clay product. Unlike prior art selective flocculation processes, the use of highly-dilute dispersions and/or multiple washing steps is not required.

REFERENCES:
patent: 2710244 (1955-06-01), Bertorelli
patent: 3371988 (1968-03-01), Maynard et al.
patent: 3701417 (1972-10-01), Mercade
patent: 3857781 (1974-12-01), Maynard
patent: 4186027 (1980-01-01), Bell et al.

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