摘要
为优化钢渣的循环利用策略,提升钢铁企业的经济效益与社会效益,首先分析了钢渣中钛元素与磷元素的含量,并基于不同钢渣配比进行烧结杯试验。基于系统研究可知,在钒钛磁铁矿烧结过程中,随钢渣配比增大,烧结矿中钙钛矿相增加,部分粘结相由复合铁酸钙相向钙钛矿相转变,烧结矿整体矿相呈现不均匀化,复杂性增强,该矿相转变对烧结矿强度造成不利影响。基于磷元素富集效应,随钢渣配比增大,成品烧结矿中磷元素含量升高,当钢渣配加量为5%时,烧结杯试验烧损率最低为15.42%。钢渣配比为4%时,烧结矿成品率最高为86.49%,随钢渣配比继续增大成品率基本保持稳定。
To optimize the recycling strategy of steel slag and enhance the economic and social benefits of steel companies,the study first analyzed the content of titanium and phosphorus elements in steel slag and conducted sintering pot tests based on different steel slag ratios.In the vanadium-titanium magnetite sintering process,with the increase of steel slag ratio,the perovskite phase in sinter increases,and bonding phases transform from SFCA to perovskite phases.This transformation leads to an uneven mineral phase in sinter and increases its complexity,which has a detrimental effect on the strength of the sintered ore.Additionally,with the increase of steel slag ratio,the phosphorus content in the finished sintered ore also increases.When the steel slag addition amount reaches 5%,the lowest sintering loss rate in the sintering pot test is 15.42%.At a steel slag ratio of 4%,the maximum yield of sintered ore is 86.49%,as the ratio continues to increase,the yield remains relatively stable.
作者
张建良
王琪
刘陈新
曹朝真
李震
朱建秋
郝良元
Zhang Jianliang;Wang Qi;Liu Chenxin;Cao Chaozhen;Li Zhen;Zhu Jianqiu;Hao Liangyuan(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;HBIS Chengde Vanadium Titanium New Material Co.,Ltd.,Chengde 067000,Hebei,China;BHP Billiton China,Shanghai 200131,China)
出处
《钢铁钒钛》
CAS
北大核心
2024年第5期123-129,共7页
Iron Steel Vanadium Titanium
基金
国家自然科学基金资助项目(52174291)。
关键词
烧结
钢渣
配比
冶金性能
微观结构
sintering
steel slag
ratio
metallurgical properties
microstructure
