DMF铁矿粉在含铬型钒钛混合料烧结中的应用  

Application of DMF Ore for Sintering of Cr-Bearing Vanadium and Titanium Magnetite

作　　者：周密[1] 杨松陶[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508-511,516,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);国家自然科学基金资助项目(51090384;51174051);科技部重大国际合作项目(2012DFR60210)

摘　　要：对一种低品位廉价赤铁粉(DMF粉)配加在含铬型钒钛混合料中烧结的可行性进行了研究.通过微型烧结装置和熔点测定仪对DMF粉的液相流动性和溶化特性进行了分析.结果表明,DMF粉液相流动性好,液相开始生成温度ts及有效液相终止温度tf较低,溶化区间t较宽,溶化时间τm充分,安全液相量的生成速度较小(0.125 mm/min),可弥补含铬型钒钛烧结矿液相量的不足,实现优化配矿.烧结杯实验结果表明,配加10%DMF粉的含铬型钒钛烧结矿各项指标均较好,且有利于高炉的稳定顺行.Low grade and cheap hematite ore（ DMF） was researched for sintering of Cr-bearing vanadium and titanium magnetite（ V-Ti-Cr） via sessile drop measuring setup,miniature sintering setup and sintering pot tests. The results showed that DMF has a good fluidity with a wide melting range,a long melting time,and the beginning and ending temperature that liquid generated are low along with a small value of security liquid velocity（0. 125 mm / min）. Therefore,DMF can be used as a matching ore in V-Ti-Cr mixture to make up the disadvantage that V-Ti-Cr sinter owns an insufficient liquid content. Sinter pot tests showed that the optimal additive ratio of DMF is 10%,which is helpful to stabilize the blast furnace operation.

关 键 词：含铬型钒钛矿 优化配矿 高炉 烧结 溶化特性 

分 类 号：TF521[冶金工程—钢铁冶金]