材料与冶金学报2017，Vol.16Issue(2)：110-115,6.DOI:10.14186/j.cnki.1671-6620.2017.02.006
煅烧-还原一体化炼镁新技术研究进展
Research progress of calcination-reduction integration process for the new technique of magnesium production
摘要
Abstract
Magnesium produced by Pidgeon process in China accounts for 80% of the global yields.Although the Pidgeon process was modified and there was a big progress on energy efficient and environmental protection, it is still a high energy consumption and high emissions process.In order to solve these problems, a new technique of calcination-reduction integration process for magnesium production was proposed by the authors at Northeastern University China, in which the pre-prepared pellets were employed as the raw materials and both the calcination stage and the reduction stage wre carried out in one reactor.In the novel process, the rotary kiln for calcination used in Pidgeon process was canceled and the heat carried by CO2 produced from the decomposition of dolomite was utilized, thus the high concentration CO2 was captured.In the present paper the research progress of the process, including the preparation of pellets, its calcination and reduction were reported.The results indicated that the pellet strength before and after calcination reaches 76N and 55N, respectively.The reduction ratio reaches 93.5% at 1400℃ for 1h in a pressure of 10Pa.关键词
镁冶炼/预制球团/硅热还原/皮江法Key words
magnesium production/pre-prepared pellets/silicothermic reduction/Pidgeon process分类
矿业与冶金引用本文复制引用
傅大学,张廷安,豆志河,关录奎..煅烧-还原一体化炼镁新技术研究进展[J].材料与冶金学报,2017,16(2):110-115,6.基金项目
国家自然科学基金资助项目(51504058, U1508217, 51404054, 51374064),教育部基本科研业务费(N162504003),辽宁省博士启动基金(201601003). （51504058, U1508217, 51404054, 51374064）
