· Fine grinding testwork of talc was carried out in a jet mill by varying the feed rate, classifier rotational speed, and grinding pressure at five levels. In this jet mill, grinding .
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Mechanochemical Effects On Talc During Fine Grinding . Talc ground at 4 kgh, 13,000 rpm, and 6 bar exhibited massive mechanochemical effect where the degree of crystallinity was degree of mechanochemical effect up to took place when talc was ground at grinding pressure and classifier rotational speed of 6 bar and 13,000 rpm, respectively.