转炉双渣操作炉渣中磷微区分布规律  

Phosphorus microscopic enrichment regularity of earlier and final slag in double-slag steelmaking

作　　者：李晨晓[1,2] 李宏[1,2] 毛文文 鲁华[1,2] 

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《中国冶金》2016年第12期31-35,共5页China Metallurgy

基　　金：国家"十二五"科技支撑计划资助项目(2012BAC27B02);国家自然科学基金资助项目(51334001)

摘　　要：对转炉双渣操作时的前期渣和终点渣中微观区域里磷的微观富集规律进行了研究,发现微区碱度Rm为2.0-2.5的微区中磷的富集程度最高;前期渣和终点渣中钙质量分数分别为16%-20%、33%-37%的微区中磷质量分数较高;微区磷富集与硅质量分数关系密切,终点渣微区中硅质量分数为9%-12%、前期渣微区中硅质量分数为13%-14%时,磷质量分数最高;微区铁质量分数对磷富集的影响明确,铁质量分数为5%-9%时磷质量分数最大;镁质量分数低的微区中磷质量分数较高.The phosphorus enrichment in different microarea of the earlier and final slag during the double-slag operation in converter was studied.The results show that the enrichment level of P is the highest in the microarea whose Rm is between 2.0 to 2.5.And the P mass fraction is higher in slag microarea whose Ca mass fraction in the earlier and final slag is between 16%-20% and 33%-33%,respectively.The P enrichment in microarea is closely related to the Si mass fraction,and the P mass fraction is at higher point in the microarea whose Si mass fraction is 9%-12% in final slag and 13%~14% in earlier slag.The Fe mass fraction in the microarea has clear impact on the P enrichment,and the P mass fraction can get the maximum value when the Fe mass fraction is between 5%-9%.The higher P mass fraction appears in the microarea whose Mg mass fraction is low.

关 键 词：转炉 双渣操作 磷富集 微区 前期渣 终点渣 

分 类 号：TF713[冶金工程—钢铁冶金]