B_(2)O_(3)-Na_(2)O系调渣剂对钒钛铁水脱硫渣性能的影响  

Effect of BO-NaO slag modifier on desulfurization slag performance of hot metal containing vanadium and titanium

作　　者：杨必文 王海北 郑朝振 陈亮[2] 胡一航 YANG Bi-wen;WANG Hai-bei;ZHENG Chao-zhen;CHEN Liang;HU Yi-hang(Research and Design Institute of Metallurgical,BGRIMM Technology Group,Beijing 100160,China;State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Pangang Group Research Institute Co.,Ltd.,Panzhihua 617000,Sichuan,China;School of Engineering,Peking University,Beijing 100871,China)

机构地区：[1]矿冶科技集团有限公司冶金研究设计所,北京100160 [2]攀钢集团研究院有限公司钒钛资源综合利用国家重点实验室,四川攀枝花617000 [3]北京大学工学院,北京100871

出　　处：《钢铁》2021年第10期91-98,共8页Iron and Steel

摘　　要：为解决含钒钛铁水脱硫扒渣过程中炉渣黏稠、铁损大及后续回硫多等问题,运用FactSage热力学软件,结合高温试验,探究了B_(2)O_(3)+Na_(2)O系调渣剂对钒钛铁水脱硫渣回硫、熔点及黏度的影响。结果表明,随着B_(2)O_(3)和Na_(2)O加入,铁水脱硫渣熔点及黏度显著降低;调渣剂中添加CaO有助于抑制回硫。并提出了改善铁水脱硫渣性能的调渣剂配方(质量分数),即CaO 45%~55%、SiO_(2)10%~15%、Al_(2)O_(3) 5%~8%、B_(2)O_(3) 15%~20%、Na_(2)O5%~10%。调渣剂添加量为脱硫渣渣量的5%~10%时,能有效降低脱硫渣熔点和黏度,减少回硫。In order to solve the problems of thick of slag,large of iron loss,and much of resulfurization in the slagging-off process after pre-desulfurization of hot metal containing vanadium and titanium,the effect of B_(2)O_(3)-Na_(2)O slag modifier on resulfurization,melting point,and viscosity of the desulfurization slag was investigated by using FactSage thermodynamic software and combing with high-temperature experiments.The results showed that the melting point and viscosity of the desulfurization slag decreased significantly with the addition of B_(2)O_(3) and Na_(2)O.And the addition of CaO to the slag modifier helped to reduce resulfurization.The formula of slag modifier(45%-55% of CaO,10%-12% of SiO_(2),5%-8% of Al_(2)O_(3),15%-20%of B_(2)O_(3),and 5%-10%of Na_(2)O) to improve the performance of desulfurization slag was presented.It effectively reduced the melting point and viscosity of desulfurization slag and decreased the resulfurization,when the added amount of the slag modifier was 5%-10% of the desulfurization slag.

关 键 词：钒钛铁水 脱硫渣 回硫 渣态性能 调渣剂 

分 类 号：TF713[冶金工程—钢铁冶金]