新型氧化铝矿浆烧成炉内热过程的数值模拟

在了解氧化铝矿浆干燥、烧成工艺及设备的基础上,针对中国铝业股份有限公司中州分公司开发的一种新的氧化铝矿浆干燥和烧成炉,建立了矿浆干燥、烧成炉内气固两相流的流动传热以及烧成过程的数学模型,就干燥、烧成炉运行参数及各几何参数进行优化计算,得出了炉内气固两相流动的速度场、温度场、压力场以及颗粒干燥和烧成反应时间,并分析讨论了喷口位置、喷口速度、颗粒雾化粒径等参数对氧化铝矿浆干燥、烧成工艺的影响.

Numerical simulation of the thermal process in a new type of aluminum oxide ore pulp calcination furnace

On the basis of the masteries for the aluminum oxide ore pulp drying and calcination,a mathematical model was developed for simulating the process of heat transfer and the calcination of two-phase flow in a new type furnace designed by Zhongzhou Branch Company,China Aluminium Corporation Limited.The fields of velocity,temperature and pressure of the two-phase flow and the reaction time were gained by optimizing calculation under the condition of different operational parameters and geometric parameters.The effect of vent position,velocity and atomization particle diameter on the drying and calcination technology of aluminum oxide ore pulp was discussed.