Clay Processing - EPAand shale processing. Clays are categorized into six groups by the U. S. Bureau Of Mines. The categories are kaolin, ball clay, fire clay, bentonite, fuller's earth,.kaolinite clay processing,Mining and Processing Kaolin - CiteSeerXbasic process remained more or less the same. In some parts of the world, the same small-scale mining methods that provided clay for cave art are still.Kaolin - British Geological Surveyproduced in Britain, such as ball clay and fire- clay (see Factsheets on Ball clay and Fireclay). The kaolinite content of processed grades of kaolin varies, but is.
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