硅铁在铁液中的熔解动力学研究  

Kinetics of Melting and Dissolution of Ferro-Silicon in Liquid Iron

作　　者：曾大新[1] 刘伟涛[1] 苏俊义[1] 陈勉己 

机构地区：[1]西安交通大学,西安710049

出　　处：《西安交通大学学报》2000年第5期75-79,共5页Journal of Xi'an Jiaotong University

摘　　要：采用圆柱形硅铁试样 ,通过连续测量其浸入不同温度铁液后的体积和温度变化 ,对硅铁在铁液中的熔解动力学进行了研究 .结果表明 :硅铁浸入铁液至完全熔解分为两个时期 ,即铁壳期和熔解期 ;硅铁在高温铁液与低温铁液中的熔解机制不同 ,当铁液温度高于 1330℃时 ,硅铁的熔解主要为熔化机制 ,当铁液温度低于 130 0℃时 ,硅铁的熔解是两步溶解机制 ,即硅铁先与铁液反应生成包含多个高熔点固相的固液多相混合物 ,然后再以溶解方式溶入铁液 .Cylindrical ferro silicon specimens are immersed into liquid iron. The melting or dissolution rate and temperature at the center are measured continuously. Identified are the period of iron shell and that of melting or dissolution. According to the observation and analysis, formation explanation is gi ven to the conversion of ferro silicon into the liquid iron state. Melting prevails when temperature of liquid iron is higher than 1330 degrees. A two stage is observed when temperature of liquid iron is lower than 1300 degrees; it comprises of an initial reaction with liquid iron to form a mixture of liquid and solid and a subsequent dissolution behaviour.

关 键 词：硅铁 铁液 熔解动力学 试验 铸铁 工艺操作 

分 类 号：TF593[冶金工程—钢铁冶金] TG143[一般工业技术—材料科学与工程]