材料期刊网

在造粒实验中，分析研究了水分含量以及原料粒度及其粒度分布对造粒粒度及其分布的影响，结果得出：(1) 适宜的造粒水分范围内，随水分含量的增加，造粒粒度增加，但当水分含量过大时，造粒粒度反而减小；(2) 原料粒度对造粒粒度的影响是主要因素，而水分含量对造粒粒度的影响是次要因素；(3)由造粒粒度分布数学模型得出的预测值与实验值之间有较好的一致性，原料粒度分布为正态分布时造粒粒度分布也为正态分布，并且造粒粒度分布的质量概率密度函数可由原料粒度分布的质量概率密度函数和原料粒度分割系数确定。

In granulating experiments, the influence of moisture content, material size and distribution on granule size and distribution are investigated and analyzed as well. The results indicate: (1) with increasing the moisture content the granule size increases in the range of the suitable moisture, on the contrary the granule size decreases when the moisture content is too high. (2) the influence of the material size on the granule size plays a dominant role, and compared with which, the moisture content creates a minor effects on granule size; (3) the predicted value obtained from our mathematical model of the granule size and distribution is in satisfactory agreement with the experimental data, which has supplied the theoretical basis for applying the mathematical model to the practical sintering process. When the material size distribution is the Gauss distribution the granule size distribution is Gauss distribution too. But also the mass density function of the granule size distribution can be ascertained by the mass density function of the size distribution and the particle partition coefficient for the material.