|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||Numerical Study of Magnesium Production by Pidgeon Process and Pre-prepared Pellets Silicothermic Process: Comparison of Heat Transfer
||Daxue Fu, Zhang Ting'an, Zhihe Dou, Lukui Guan
|On-Site Speaker (Planned)
A novel process of magnesium production has been developed by changing the preparation method of pellets of silicothermic process. For the method, the pellets consist of dolomite, ferrosilicon, fluorite and binder, which need to be roasted before reduction. After calcinations, porous pellets were obtained due to the decomposition of dolomite in the pellets. Heat transfer of the porous pellets is different from that of pellets used in Pidgeon process. In the present paper, a comparative study on heat transfer of the novel process and Pidgeon process was carried out by numerical method. The results indicated that heat transfer of Pidgeon pellets is slightly better than that of the porous pellets. For the novel process, the temperature in the center of a retort of 300mm-diameter reaches 1473K after heating the retort at 1523K for 2.3h (without considering reaction heat), which needs 4.8h for the Pidgeon process.