配碳量对含铬型钒钛烧结矿质量的影响  

Effect of carbon content on quality of chrome-bearing vanadium-titanium sinter

作　　者：杨松陶[1] 周密[1] 姜涛[1,2] 薛向欣[1,2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]东北大学辽宁省冶金资源循环科学重点实验室,辽宁沈阳110819

出　　处：《材料热处理学报》2015年第4期104-109,共6页Transactions of Materials and Heat Treatment

基　　金：国家高技术研究发展计划("863"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项目(N110202001)

摘　　要：通过烧结杯试验,研究不同配碳量对含钛型钒钛烧结矿质量的影响规律。结果表明,随配碳量增加(2.8~4.0),含铬型钒钛烧结矿的液相生成量增加,垂直烧结速度、烧成率降低,成品率先上升后降低;不同配碳量的含铬型钒钛烧结矿的矿物组成基本相同,含铁矿物均以磁铁矿和赤铁矿为主,粘结相为铁酸钙、硅酸盐、玻璃质等;随配碳量上升,磁铁矿、硅酸盐和钙钛矿含量增加,赤铁矿和铁酸钙含量减少;随配碳量增加,含铬型钒钛烧结矿的转鼓强度先上升后下降,还原粉化性能上升,还原性下降,烧结矿适宜配碳量为3.6%。Influence of different carbon content on the quality of chrome-bearing vanadium-titanium sinter was investigated through sinter pot test. The results show that with the increasing of the carbon content( mass fraction,2. 8%-4. 0%),the production of liquid phase of the chrome-bearing vanadium-titanium sinter increases,the vertical sintering speed and the sintering rate are reduced,the production rate first increases and then decreases. The mineral components of the chrome-bearing vanadium-titanium sinter with different carbon content are almost the same,the iron-bearing mineral mainly consists of magnetite and hematite,and the binding phases are calcium ferrite,silicate and glassiness. With the increasing of carbon content,the content of magnetite,silicate and perovskite also increases,but the content of hematite and calcium ferrite decreases. However,the tumbler strength of the chrome-bearing vanadium-titanium magnetite first increases and then decreases,the reduction disintegration index increases and the reduction index decreases with the increasing of carbon content. The optimum carbon content for the sinter is 3. 6%.

关 键 词：含铬型钒钛磁铁矿 烧结矿 配碳量 矿相 

分 类 号：TF046.4[冶金工程—冶金物理化学] TF52