基础特性对含铬型钒钛烧结矿粉化性能的影响  

Effect of Sintering Basic Characteristics on Reduction Degradation Index for Cr-Bearing Vanadium and Titanium Magnetite

作　　者：杨松陶[1] 周密[1] 姜涛[1] 薛向欣[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2015年第4期498-501,507,共5页Journal of Northeastern University(Natural Science)

基　　金：国家高技术研究发展计划项目(2012AA062302;2012AA062304);国家自然科学基金重大项目(51090384);中央高校基本科研业务费专项资金资助项目(N110202001);科技部重大国际合作项目(2012DFR60210)

摘　　要：承德地区含铬型钒钛烧结矿的黏结相不充分、强度差、低温还原粉化指数低,严重影响烧结矿的质量.研究了4种不同成分的含铬型钒钛磁铁精矿粉的烧结基础特性:连晶强度、黏结相强度、液相流动性、同化温度,并与4种铁精矿粉的单烧实验结果进行比较分析,探究含铬型钒钛磁铁精矿粉基础特性对烧结矿低温还原粉化指数RDI+3.15的影响规律.结果表明:含铬型钒钛磁铁烧结矿的RDI+3.15随铁精矿粉同化温度的上升而降低,随黏结相强度的上升而升高,液相流动性和连晶强度对其影响很小.The content of binding phase in Cr-bearing vanadium and titanium magnetite is insufficient,which makes the sintering strength and low temperature reduction degradation index（RDI） bad. The sintering basic characteristics,i. e.,crystal intensity,self-intensity of adhere phase,fluidity of liquid phase,assimilation temperature,were studied in four kinds of Cr-bearing vanadium and titanium magnetites,which were compared with the single burning test results of four kinds of iron ore concentrate,to explore the effect of the sintering basic characteristics on RDI＋ 3. 15.The results showed that the RDI＋ 3. 15 of sinter decreases with increasing the assimilation temperature,and increases with increasing the strength of binding phase,but the fluidity of liquid phase and crystal intensity have little influence on it.

关 键 词：含铬型钒钛磁铁矿 烧结矿 基础特性 低温还原粉化指数 优化配矿 

分 类 号：TF046[冶金工程—冶金物理化学]