氧化铝种分过程理论生长模型

Theoretical growth model of gibbsite precipitation process during alumina production

根据理想生长过程粒度分布变化的特性，通过粒数衡算方程建立了氧化铝种分理论生长过程粒度分布变化的数学模型。根据实验数据求解了不同温度条件下理论生长过程的模型参数。并讨论了模型参数与种分反应温度的关系．比较了模型预测粒度分布与实测粒度分布的偏差。该模型在55～200μm的粒径段内，能近似地对种分过程粒度分布变化进行预测。

The theoretical particle size distribution model on ideal growth process of gibbsite precipitation was constructed armed with the knowledge of characteristics of ideal growth process and particle number balance equation. Based on the experimental data. the model parameters at different temperature were solved and the relation between the gibbsite precipitation reaction and model parameters were discussed. The difference between the particle size distribution by prediction and detection was also compared. The model can predict the theoretical particle size distribution at the particle size range of 55 - 200μm.