A model of batch grinding of talc powders

作者：Xie Hongyong^*; Yuan Hao; Guan Jie

来源：1st International Conference on Civil Engineering, Architecture and Building Materials (CEABM 2011), 2011-06-18 to 2011-06-20.

DOI：10.4028/www.scientific.net/AMR.250-253.4016

• specific breakage rate
• breakage distribution parameter
• grinding equation
• acceleration behavior

Grinding of talc powders has been studied both theoretically and experimentally. The specific rates of breakage of talc powders were measured based on the first-order breakage kinetics model and the cumulative breakage distribution parameters of talc powders were measured from primary breakage products. Based on the measurement results, the specific rate of breakage and cumulative breakage distribution functions were correlated with particle size as S = 0.007d(0.57) and B-ij = d(i)(2)/d(j)(2), repectively. A differential-integral equation was thus build to describe grinding as a rate process and was integrated numerically. Comparisons on size distribution showed that the specific rate of breakage of talc powders increased with grinding time at an increase rate partial derivative S/partial derivative t about 0.0066min(-2).

• 出版日期2011
• 单位上海第二工业大学