氯化镁造粒过程中颗粒的形成过程及运动轨迹研究

Research on the formation process and motion track of particles in magnesium chloride granulation process

无水氯化镁电解是制备金属镁的主要途径之一,在电解法制备金属镁过程中,无水氯化镁的制备尤为重要。无水氯化镁一般是通过分段脱水获得,本研究对氯化镁溶液离心造粒过程中氯化镁颗粒的形成过程进行研究。采用模拟和试验的方法,研究了影响颗粒形成、颗粒粒径以及颗粒运动轨迹的因素;计算得到了颗粒水平方向和竖直方向随时间变化颗粒的位移方程和二维运动轨迹;分析了初始速度、颗粒粒径以及空气密度对氯化镁颗粒运动轨迹的影响。得出初始速度越大,颗粒水平位移越大,造粒伞形直径越大;颗粒粒径越大,水平位移越大,颗粒运动直径越大;空气密度越小,阻力越小,颗粒水平位移越大,造粒伞形直径越大。

Electrolysis of anhydrous magnesium chloride is one of the main ways to prepare metallic magnesium.In the process of preparing metallic magnesium by electrolysis,the preparation of anhydrous magnesium chloride is particularly important.Anhydrous magnesium chloride is generally obtained through segmented dehydration.This study investigates the formation process of magnesium chloride particles during the centrifugal granulation process of magnesium chloride solution.The factors affecting particle formation,particle size and particle motion trajectory were studied using simulation and experimental methods;The displacement equations and two-dimensional motion trajectories of particles in the horizontal and vertical directions over time were calculated;Analyzed the effects of initial velocity,particle size and air density on the motion trajectory of magnesium chloride particles.The larger the initial velocity,the greater the horizontal displacement of particles,and the larger the umbrella diameter of granulation;The larger the particle size,the greater the horizontal displacement,and the larger the particle motion diameter;The lower the air density,the smaller the resistance,the greater the horizontal displacement of particles,and the larger the diameter of the granulation umbrella.