碳化钙热法炼镁试验研究  

Study on thermal reduction of calcined dolomite by calcium carbide

作　　者：彭建平[1] 陈世栋[1] 武小雷[1] 胡文鑫[1] 冯乃祥[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《轻金属》2009年第3期47-49,共3页Light Metals

基　　金：国家科技支撑计划项目(2006BAE04B05-4)

摘　　要：对以碳化钙为还原剂真空还原氧化镁作了热力学分析,计算出真空条件下还原反应的自由能和还原反应临界温度。并将白云石煅烧后与碳化钙混和制团,进行还原炼镁试验。结果表明,在1150℃左右和1Pa^2Pa真空条件下,可以获得80%以上的镁还原率,而同等条件下以硅铁还原剂获得的镁还原率不到70%。Based on thermodynamic analysis, the Gibbs free energy and critical temperature of the MgO deoxidized reaction by CaC2 has been calculated in this paper. And some experiments for Mg reduction from calcined dolomites by calcium carbide have been done. It is shown that under same condition of temperature and vacuum press the percent reduction of Mg with calcium carbide as reductant is higher than one with ferrosilicon containing 75 % silicon as reductant.

关 键 词：镁冶金 真空热还原 碳化钙 热力学分析 

分 类 号：TF822[冶金工程—有色金属冶金] TF803.13