采用行星磨对水泥熟料进行不同时间段的研磨,通过测定粉磨产物的粒度分布、比表面积和45 μm筛余值,以Rosin-Rammler-Bennet(RRB)方程作为粒度分布模型,运用线性回归分析和粉磨动力学的特征粒径分析的方法,对熟料进行了粉磨动力学研究和粉磨性能评价.实验结果表明:经过研磨后,水泥熟料粉体的比表面积、特征粒径和均匀性系数与粉磨时间的对数或双对数呈线性关系,熟料的粉磨速度方程为dS/dt=170.66/t,且熟料粉磨细度不宜高于550 m~2·kg~(-1).
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).
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