Method of beneficiating kaolin clay utilizing ammonium salts
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United States of America Patent
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Aug 5, 1986
Grant Date -
N/A
app pub date -
Aug 27, 1984
filing date -
Aug 27, 1984
priority date (Note) -
Expired
status (Latency Note)
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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.
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