Compositions: ceramic – Ceramic compositions – Clay containing
Patent
1993-09-24
1994-12-27
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Clay containing
501147, 106486, 106488, 1621818, 423156, C04B 3304
Patent
active
053766059
ABSTRACT:
A process for increasing the brightness of Minnesota kaolin clay containing chlorite and siderite mineral impurities comprising treating the clay with a strong mineral acid preferably in combination with magnetic separation.
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Xie et al. "High Gradient Magnetic Separation and Chemical Bleaching of Guoshan Kaolin" (1986) Feijinshukang (1), 30-6, 42 Peoples Republic of China.
"Magnetic Separations Near Market Breakthrough" (Jan. 28, 1974) C9EN pp. 21-22.
Iannicelli Joseph
Pechin Joseph E.
Aquafine Corporation
Bell Mark L.
Marcantoni Paul
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