转炉双联工艺过程高温脱碳成渣路线的理论研究  

Theoretical Study of Slag Formation Path for Decarbonization during Duplex Steelmaking Process in Converter

作　　者：马清泉[1] 刁江[2] 游香米 张涛[2] MA Qingquan;YOU Xiangmi;ZHANG Tao;DIAO Jiang(Steelmaking Department of CISDI Engineering Co. Ltd., Chongqing 401122, China;College of Materials Science and Engineering,Chongqing University, Chongqing 400044, China;CISDI Chongqing Iron & Steelmaking Plant Integration Co. Ltd., Chongqing 401122,China)

机构地区：[1]中冶赛迪工程技术股份有限公司炼钢事业部,重庆401122 [2]重庆大学材料科学与工程学院,重庆400044 [3]国家钢铁冶炼装备系统集成工程技术研究中心,重庆401122

出　　处：《工业加热》2016年第5期42-44,48,共4页Industrial Heating

基　　金：重庆市科技攻关重点项目(CSTC;2011AC7048)

摘　　要：在转炉双联工艺半钢炼钢过程,为得到满足冶炼要求的炉渣,成渣路线的选择至关重要。本文借助相图计算软件Factsage和正规离子溶液模型,以CaO-FeO-MnO-SiO_2-MgO-Al_2O_3-P2O_5七元渣系作为脱碳炉渣系,对转炉双联工艺过程高温脱碳成渣路线进行了理论分析,得到以下结论:双联工艺脱碳炉内,成渣路线应采取铁质成渣路线。为提高锰的回收率和满足脱碳炉渣返回脱磷炉利用的需求,对初渣和终渣组成范围提出要求:初渣成分在15%CaO-65%FeO-20%MnO附近;终点炉渣成分在40%CaO-35%FeO-25%MnO附近。During semi-steel making process in converter, it involved the rapid formation of slag with some properties and selecting routes of slag formation are very important. In this paper, the phase diagram calculation software Factsage and Regular solution model are used to analysis the theoretical slag forming route in CaO-FeO-MnO-Si02-MgO-Al2〇3-P2〇5 slag during duplex process in converter. The results of current study indicate that the theoretical slag formation path was irony line in the decarburization converter. In order to improve the recovery ratios of manganese, the requirement for controllable composition of final slag in the decarburization converter: the composition of initial slag was 15%CaO-65%FeO-20%MnO, approximately and composition of final decarburization slag was close by 40%Ca〇-35%FeO-25%MnO.

关 键 词：脱碳 成渣路线 熔化性能 分配比 

分 类 号：TF044[冶金工程—冶金物理化学]