摘要
采用三元二次回归正交组合设计及空白对照试验的方法,研究了硼铁精矿配比、磁化焙烧温度和时间对钒钛磁铁矿内配碳含硼球团磁化指标的影响。结果表明：添加少量硼铁精矿可提高磁化焙烧效果;焙烧温度对磁化效果的影响最显著,其次是焙烧时间,三个自变量因素直接的交互作用对磁化指标的影响非常小;根据自变量回归方程得出,在氮气保护条件下,当焙烧温度为890～1 037℃、焙烧时间为50～90 min、硼铁精矿含量为0.5%～3.0%时,其磁化球团的磁化指标为0.67,其主要物相为Fe3O4。
In this paper,the effects of boron-bearing iron concentrate content,roasting temperature and roasting time on the magnetization indexes of the carbon and boron bearing pellets were investigated by ternary and quadratic orthogonal regression and blank test. The results showed that the magnetic effect of V-Ti magnetite ore carbon-bearing pellets with a few boron-bearing iron concentrate content could be improved obviously. The influence of roasting temperature on the magnetic effect was most significantly,followed by the roasting time,and the interactions among of the three independent variable factors. According to the independent variable regression equation,under the condition of nitrogen protection,roasting temperature of 890 ～ 1 037 ℃,roasting time of 50 ～ 90 min and the boron-bearing iron concentrate content of 0. 5% ～ 3. 0%,the magnetic pellets could be obtained,whose magnetization index was 0. 67 and main phase was Fe3O4.
出处
《钢铁钒钛》
CAS
北大核心
2015年第5期69-73,共5页
Iron Steel Vanadium Titanium
基金
四川省钒钛材料及复合技术高校重点实验室基金(13-FTFH09)资助
攀枝花市高新技术及产业化项目基金(2012CY-G-6)资助
关键词
钒钛铁精矿
磁化焙烧
内配碳球团
硼铁精矿
回归正交组合
vanadium titanium iron ore concentrate
magnetization roasting
carbon-containing pellets
boron-bearing iron concentrate
regression of 3 factors quadric orthogonal combination
