Quantitative Evaluation and Control of Delamination and Change in the Physico-chemical Properties of Talc by Wet Grinding

机译：湿磨法对滑石分层和理化性质变化的定量评估与控制

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Delamination and changes in the physico-chemical proper-ies in the grinding of talc, were studied using a multi-ring media grinding machine. Products were characterized by SEM, specific surface area, S_t and aspect ratio, A_s, determined from Heywood diameter and thickness measured by a confocal scanning laser microscope. The change in the physico-chemical properties were examined by thermogravimetry and X-ray diffractometry. A_s and S_t increase with increasing rate of revolution. The former levels off at above ca.1000 min~(-1), while the latter keeps increasing. When the S_t exceeds three times of the initial value for the starting material, the crystal structure and the physico-chemical properties of talc change remarkably and discontinuously, indicating the change from delamination region to fine comminution region. The change between these two regions is controlled by selecting the operational conditions.

机译：使用多环介质研磨机研究了滑石粉的分层和理化性质的变化。通过SEM，比表面积，S_t和长径比A_s表征产品，其由Heywood直径和厚度确定，所述Heywood直径和厚度通过共聚焦扫描激光显微镜测量。通过热重法和X射线衍射法检查理化性质的变化。 A_s和S_t随着转速的增加而增加。前者在约1000 min〜（-1）处趋于平稳，而后者则持续增加。当S_t超过起始材料的初始值的三倍时，滑石的晶体结构和理化性质显着且不连续地变化，表明从分层区域到细粉碎区域的变化。通过选择操作条件来控制这两个区域之间的变化。

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《Proceedings '96 China-Japan symjposium on particuology》|1996年|P.13|共1页
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Kenji HAMADA; Shin-ichi YAMAMOTO; Mamoru SENNA;
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中图分类粉末技术;
关键词
delamination; talc; wet grinding; aspect ratio;

机译：分层;滑石粉;湿磨;长宽比;

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Quantitative Evaluation and Control of Delamination and Change in the Physico-chemical Properties of Talc by Wet Grinding

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