薄板坯连铸保护渣冶金性能实验研究  

Experimental study on metallurgical properties of mold flux for thin slab continuous caster

作　　者：朱立光[1] 周建宏[2] 刘志宏[1] 韩秀丽[2] 唐国章[2] 王硕明[2] 

机构地区：[1]河北理工大学冶金与能源学院,河北唐山063009 [2]中钢集团工程设计研究院,河北石家庄050000

出　　处：《炼钢》2006年第4期24-27,共4页Steelmaking

基　　金：河北省自然基金资助项目(03212221D-2)

摘　　要：对5种薄板坯连铸保护渣化学成分、熔化温度、熔化速度、结晶温度和矿物组成进行了试验研究和理论分析，结果表明现行薄板坯连铸保护渣熔化温度为1057～1131℃，熔化速度为19．3～61．1s，结晶温度为1058～1142℃，凝固渣样的矿物组成以硅灰石和少量黄长石为主，且随着碱度的提高，渣样的玻璃化率急剧降低。综合各种性能和工艺要求，渣A除熔化速度需要调整外，其它性能均较适于薄板坯连铸需要。The chemical compositions, melting temperature, melting rate, crystallization temperature and mineral constituents of five different mold fluxes for thin slab continuous casting have been experimentally studied and theoretically analyzed in the present paper. Results show that the melting temperature of the mold flux currently used in the thin slab continuous casting is confined within the limit of 1 058 to 1 131 ℃, its melting rate, 19. 3 to 61.1 s, crystallization temperature, 1 058 to 1 142 ℃ and the mineral constituents of the solidified slag are primarily composed of wollastonite with a small quantity of melilite. With the increase of the basicity in the flux the proportion of the glass type flux is sharply reduced. In consideration of the comprehensive properties and process requirements all the processing parameters except the melting rate for Flux A have to be readjusted and the properties of the other fluxes are suitable for the requirements of thin slab continuous casting.

关 键 词：薄板坯连铸 保护渣 冶金性能 实验研究 

分 类 号：TF777.7[冶金工程—钢铁冶金]