Process for removing impurities from kaolin clays

Details Process for removing impurities from kaolin clays Process for removing impurities from kaolin clays

1997-12-08

1999-04-06

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

501144, 501145, 501148, 106486, 106487, 4233281, B03D 102

Patent

active

058913262

ABSTRACT:
Colored impurities are removed from kaolin clay by an improved flotation process in which a blend of a fatty acid compound and a hydroxamate compound is used as a collector.

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patent: 4629556 (1986-12-01), Yoon et al.
patent: 4871466 (1989-10-01), Wang et al.
patent: 4929343 (1990-05-01), Wang et al.
patent: 4981582 (1991-01-01), Yoon et al.
patent: 4997550 (1991-03-01), Cobb et al.
patent: 5037534 (1991-08-01), Harrison
Hydroxamate Vs. Fatty Acid Flotation for the Benefication of Georgia Kaolin, Chapter 22 from Reagents to Better Metallurgy--Society for Mining, Metallurgy, and Exploration, Inc.; Yordan et al., 1994.
A Study of Carrier Flotation of Clay, Chapter 57 from vol. 2--Proceedings of the International Symposium on Fine Particles Processing--American Institute of Mining, Metallurgical and Petroleum Engineers, Inc.; Wang et al., 1980.
Westvaco L-5 tall oil fatty acid, Product Information Sheet from Westvaco Co., 1992.
Beneficiation of Kaolin Clay by Froth Flotation Using Hydroxamate Collectors, Article from Minerals Engineering, vol. 5, Nos. 3-5, pp. 457-467; Yoon et al., 1992.
S-6493 Mining Reagent, p. 1 of Material Safety Data Sheet from Cytec Division of American Cyanamid Co., 1993.

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