Abstract：A self-designed horizontal planetary ball mill was used to grind cement clinker. The particle size distribution and grinding energy consumption theory were studied in different planetary factors and feeding granularities. The results show that the particle size distribution of product powders is complied with RRSB(Rosin-Rammler-Schuhmann-Bennett)particle size distribution. The uniformity coefficient of cement powders is at about 0.8. When the planetary factor is 14 and grinding for 120 s, the mass fraction of powders with particle size larger than 80 and 45 μm is respectively less than 10% and 30%. The particle size distribution of product powders meets the national standard of GB 175—2007, and the energy consumption for unit output is 332 J/g. After fitting the curve of relationship between particle size and energy, it is obtained that the grinding work index becomes to 1.999 36, which approaches to von Rittinger grinding work index. The increase of specific surface area is linear to the energy consumption. The von Rittinger grinding energy consumption theory with different planetary factors applies to the horizontal planetary mill.

Keywords: horizontal planetary ball mill; von Rittinger theory; grinding energy consumption theory; particle size distribution