真空铝热还原法生产金属锶──SrCO_3热分解  

Production of Sr Using Vacuum Thermal Reduction of Aluminium──Thermal Decomposition of SrCO_3

作　　者：李金丽[1] 张明杰[2] 郭清富[2] 

机构地区：[1]东北大学学报编辑部,辽宁沈阳110004 [2]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2002年第8期776-778,共3页Journal of Northeastern University(Natural Science)

基　　金：宁夏科委重大科技攻关项目 ( 2 0 0 1 118)

摘　　要：碱土金属碳酸盐是所有碳酸盐中最稳定的一族·在热力学分析的基础上 ,研究了SrCO3 在各种条件下的热分解规律·实验结果表明 ,添加Al2 O3 ,碳或减少系统分压均可降低SrCO3的分解温度 ,其中添加Al2 O3 的影响最大·当向SrCO3 中添加碳时 ,除降低其分解温度外 ,所产生的CO还可重复利用·At the atmosphere pressure,SrCO 3 is decomposed into SrO and CO 2 when heated. Based on thermodynamics analysis,thermal decomposition of SrCO 3 was studied on different conditions. The results show that decomposition temperature of SrCO 3 decreases when Al 2O 3 or C are added respectively, or partial pressure of the system is lowered. The effect of adding Al 2O 3 on the temperature is the greatest among the tested factors. When carbon is added to SrCO 3, not only the decomposition temperature of SrCO 3 can be lowered but also CO produced can be reused as a by-product.

关 键 词：真空铝热还原法 SrCO3 锶 热分解 添加剂 碱土金属 碳酸锶 

分 类 号：TF827.2[冶金工程—有色金属冶金] TF803.131