铝粉对钒钛磁铁精矿碳热还原及熔分过程的影响  

Effects of aluminum on the carbothermic reduction of vanadium-titanium magnetite concentrate and melting separation

作　　者：李杰 寇璐垚[1,2,3,4] 杨黎 胡途 张子木[5] LI Jie;KOU Luyao;YANG Li;HU Tu;ZHANG Zimu(Yunnan Provincial Key Laboratory of Intensification Metallurgy,Kunming University of Science and Technology,Kunming 650093,P.R.China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,P.R.China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,P.R.China;Key Laboratory of Unconventional Metallurgy Under the Ministry of Education,Kunming University of Science and Technology,Kunming 650093,P.R.China;Key Laboratory for Ecological Metallurgy of Multimetallic Mineral Under the Ministry of Education,Northeastern University,Shenyang 110819,P.R.China)

机构地区：[1]昆明理工大学云南省特种冶金重点实验室,昆明650093 [2]昆明理工大学省部共建复杂有色金属资源清洁利用国家重点实验室,昆明650093 [3]昆明理工大学冶金与能源工程学院,昆明650093 [4]昆明理工大学非常规冶金教育部重点实验室,昆明650093 [5]东北大学多金属共生矿生态化冶金教育部重点实验室,沈阳110819

出　　处：《重庆大学学报（自然科学版）》2019年第10期65-72,共8页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(51504113);东北大学多金属共生矿生态化冶金教育部重点实验室开放课题基金资助项目(NEMM2017002)~~

摘　　要：研究了铝粉对钒钛磁铁精矿碳热还原及熔分过程的影响。结果表明:添加铝粉能提高钒钛磁铁精矿碳热还原反应速率。铝粉添加量越大,还原反应越快。在还原反应过程中,铝热还原反应的发生放出了大量热量,并在其反应界面周围形成局部高温,从而强化碳热还原反应过程,同时促进新生金属铁聚集长大。添加1%铝粉可稍微改善渣金分离;当铝粉添加量大于2%时,由于TiC的生成,渣的流动性变差,渣铁分离效果恶化。The effect of aluminum powder on the carbothermal reduction process of vanadium-titanium magnetite concentrate was studied.The results show that the addition of aluminum powder can promote the rate of carbothermic reduction of vanadium-titanium magnetite concentrate.During the reduction process,aluminum powder replaces carbon as a reductant to participate in the reduction reaction,which releases a large amount of heat to cause local high temperature around it,thereby promoting the progress of the carbothermic reduction reaction and promoting the accumulation of new metal iron.The addition of 1%aluminum powder can slightly improve the separation of slag and metal;when the amount of aluminum powder added is more than 2%,the fluidity of the slag becomes difficult due to the formation of TiC,and the separation effect of slag and metal is deteriorated.

关 键 词：钒钛磁铁精矿 含碳球团 碳热还原 铝热强化 

分 类 号：TF556[冶金工程—钢铁冶金]