11.25 Clay Processing US EPA
2015910&ensp·&enspkaolin, ball clay, fire clay, bentonite, fuller's earth, and common clay and shale. Kaolin, or china clay, is defined as a white, claylike material composed mainly of kaolinite, which is a hydrated aluminum silie (Al2O3ܨSiO2ܨH2O), and other kaolingroup minerals. Kaolin has a