摘要
以高铬型钒钛磁铁矿和普通磁铁矿精矿混合料为原料,通过烧结杯试验考察了TiO2质量分数对高铬型钒钛磁铁矿烧结矿性能的影响规律.研究结果表明:随着TiO2质量分数从6.30%增加到11.76%,转鼓指数逐渐降低,烧结矿强度降低,垂直烧结速度、成品率和烧结杯利用系数均呈现上升的趋势;直径小于5 mm的小粒径烧结矿的比例逐渐降低,粒度有增大的趋势;随着TiO2质量分数的增加,赤铁矿含量降低,磁铁矿含量增加,同时,钙钛矿和Fe9TiO15相也增加.低温还原粉化指数有上升的趋势,相反还原性降低.
High-chromium vanadium-titanium magnetite(HCVTM)and ordinary magnetite are used as raw materials to explore the influence of TiO2 content on the properties of HCVTM sinter by sintering cup test.The results show that as the TiO 2 content increases from 6.30%to 11.76%,the tumbler index and sinter strength decrease while the vertical sintering speed,yield,and sintering utilization coefficient show the increasing tendency.The proportion of the tiny sinter particles with a diamater less than 5mm decreases gradually and the overall sinter size increases.With the increase of the TiO2 content,the hematite decreases,and the magnetite,CaTiO3 and Fe 9TiO15 increase.The low temperature reduction degradation index shows an increasing tendency,while the reducibility decreases with the increase of TiO2 content.
作者
张立恒
高子先
汤卫东
薛向欣
ZHANG Li-heng;GAO Zi-xian;TANG Wei-dong;XUE Xiang-xin(School of Metallurgy,Northeastern University,Shenyang 110819,China)
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2020年第11期1667-1672,共6页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(U1908226)
中央高校基本科研业务费专项资金资助项目(N182503035).
关键词
高铬型钒钛磁铁矿
TIO2
烧结矿
烧结性能
还原性
high-chromium vanadium-titanium magnetite
TiO 2
sinter
sintering performance
reducibility
