processing methods of kaolin

نویسندگان

حسین نعمت اللهی

چکیده

the processing methods of kaolin are based on its high a b i l i t y of water absorption and converting easily to fine perticles of kaolin dispersed in water. so, depending on the dimension of impurities of kaolin, one can choose the pr6pe1: classifier f o r removal of them. sometimes, the texture of kaolin is not suitable for water absorption and resultant dispersion. in this case,the ore should be crushed and milled to fine particles. this makes the classification difficult and also the fine particles of impurities makes the final product less valuable. the reduction of titanium minsrals is done with flotation. this method should be used with a porter mineral. the titanium reduction could also be done by selective dispersion of kaolin and precipitation of titanium minerals. for reduction of iron in the final product, the high magnitic separator should be used. by the chemical methods, the separation of iron is possible. here, the iron change to a soluable s a l t and extracted from the media. finally, the biological methods are proper for the iron reduction.

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جلد ۴۸، شماره ۱۲، صفحات ۰-۰

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