In this study, the effects of drying temperature, hot airflow speed and diameter of green pellet on drying rate of artificial magnetite pellet were deeply investigated to clarify the drying characteristics of artificial magnetite green pellet. The results show that the drying process of artificial magnetite green pellet has three stages, accelerated drying stage, constant drying stage and decelerated drying stage. And drying temperature and hot airflow speed both have significant reciprocal effects on moisture ratio and drying rate of green pellet during the drying process. However, the diameter of green pellet has little effect on drying process of green pellet. Then the drying fitting models of Correction Henderson and Pabis, Lewis, Correction Page (III), Wang and Singh are used to describe the drying kinetics of artificial magnetite green pellet. The fitting results indicate that the drying process of artificial magnetite pellet can be described by Correction Page (III) model accurately. Finally, the contrast experiments demonstrate that the fitting model can well describe the actual drying process.

本研究深入研究了干燥温度，热风速度和生坯直径对人造磁铁矿颗粒干燥速率的影响，以阐明人造磁铁矿颗粒的干燥特性。结果表明，人造磁铁矿生坯的干燥过程分为加速干燥阶段，恒定干燥阶段和减速干燥阶段三个阶段。在干燥过程中，干燥温度和热气流速度对生料的含水率和干燥速率均具有显着的倒数影响。然而，生丸的直径对生丸的干燥过程影响很小。然后是改正亨德森和帕比斯的干燥拟合模型，刘易斯，改正页（III），Wang和Singh用于描述人造磁铁矿生坯的干燥动力学。拟合结果表明，可以用Correction Page（III）模型准确地描述人造磁铁矿颗粒的干燥过程。最后，对比实验表明拟合模型可以很好地描述实际的干燥过程。