矿产综合利用Issue(3)：39-44,6.DOI:10.3969/j.issn.1000-6532.2013.03.009
热还原制备金属镁的反应热力学与工艺过程评价
Thermodynamic Analysis and Processing Evaluation of Magnesium Preparation by Thermal Reduction Method
摘要
Abstract
China is the largest producer of magnesium in the world.The vacuum-thermal reduction method is the main one for the preparation of magnesium.In this paper,the Gibbs free energy changes for the reaction in the Pidgeon process,aluminothermic reduction of magnesia and carbothermic reduction of magnesia were calculated over at different temperatures and pressures.The consumption of resources and energies,the discharges of the greenhouse gas and solid wastes,the environmental compatibility of the three thermal reduction processes were studied.It was revealed that aluminothermic reduction of magnesia offers advantages of the lower resource and energy consumption as well as lower discharges of greenhouse gas and solid waste.A potential technique for the clean utilization of the dolomite is the separation of the magnesia component and calcia component to obtain magnesia and calcium carbonate,followed by the thermal reduction of magnesia to obtain magnesium.关键词
镁冶炼/热还原/反应热力学/过程评价Key words
Magnesium metallurgy/ Thermal reduction/ Reaction thermodynamics/ Process evaluation分类
矿业与冶金引用本文复制引用
刘玉芹,马鸿文,邓鹏,蒋芸..热还原制备金属镁的反应热力学与工艺过程评价[J].矿产综合利用,2013,(3):39-44,6.基金项目
中央高校基本科研业务费资助(2-9-2012-35) （2-9-2012-35）
中国地质大学(北京)矿物材料国家专业实验室开放基金 （北京）
