不同镁质熔剂对烧结性能的影响  

Effects of Different Magnesium Fluxes on Sintering Properties

作　　者：刘曙光[1] 刘景权 张永[2] 魏国良[1] Liu Shu-guang;Liu Jing-quan;Zhang Yong;Wei Guo-liang(Rare Earth Steel Iron-making Plant of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司稀土钢炼铁厂,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010

出　　处：《包钢科技》2023年第5期10-15,共6页Science & Technology of Baotou Steel

摘　　要：采用红外微型烧结炉对配加白云石、轻烧白云石和蛇纹石在不同MgO含量水平下对铁矿粉的液相流动性和粘结相强度性能的影响进行了研究,结果表明:配加轻烧白云石的烧结性能要优于配加白云石和蛇纹石,主要表现在1280℃铁矿粉液相流动性指数适宜,介于0.6~1.2的范围内,粘结相强度最高为476.6 N,适宜的MgO含量为2.0%。烧结杯试验结果显示,配加轻烧白云石的烧结矿,具有低温还原粉化指数高、滴落区间窄和最大压差低的优点。综合比较白云石、轻烧白云石和蛇纹石三种镁质熔剂的烧结性能,认为烧结配加轻烧白云石更有利于烧结矿冶金性能的改善。In the paper,the effects of adding dolomite,soft burnt dolomite and serpentine into infrared micro sintering furnace with different content levels of MgO on such properties as the fluidity of liquid phase and strength of bonding phase for iron ore powder are studied.The results showed that the sintering properties of adding soft burnt dolomite were superior to those of adding dolomite and serpentine,which mainly manifested in suitable fluidity index of liquid phase for iron ore powder within 0.6~1.2 at 1280℃,the highest strength of bonding phase was 476.6 N and appropriate content of MgO was 2.0%.The sinter pot test results showed that the sinter added with soft burnt dolomite was with such advantages as high low temperature reduction degradation index,narrow drippage interval and small maximum pressure differences.The sintering of adding soft burnt dolomite is considered to be more beneficial to improving metallurgical properties of sinter based on the comprehensive comparisons of sintering properties of such three magnesium fluxes as the dolomite,soft burnt dolomite and serpentine.

关 键 词：镁质熔剂 液相流动性 粘结相强度 烧结性能 

分 类 号：TF046.4[冶金工程—冶金物理化学]