Abstract: The cement clinker was milled for different time in the planetary ball mill. Investigations were carried out with the particle size distribution, the blaine surface as well as 45 μm sieve residue of the clinker. With the Rosin-Rammler-Bennet equation as the particle size distribution model, the grinding dynamic feature of cement clinker was studied and evaluated in the experiment. By the methods of linear regression analysis and the characteristic diameter analysis of grinding dynamic feature. The experimental results show that the specific surface area, the characteristic diameter and the uniformity coefficient of ground clinker powder are in linear relation to logarithmic or double logarithmic of grinding time. The grinding dynamics of cement clinker follows dS/dt=170.66/t, and the fineness of clinker powder shouldn' t be higher than 550 m~2·kg~(-1).

Key words: cement clinker;grinding;dynamics