摘要
在铁矿石烧结过程中，熔体性质决定了烧结矿粘结相的结构．采用小型试验来考察铁矿石粉矿的化学成分（SiO2，Al2O3，MgO和碱度）对烧结强度的影响．并通过化学成分对熔体的黏度和表面张力的影响来对烧结强度的变化加以解释．试验结果表明，随着粉矿中配加CaO与矿石的质量比的变化（0．08-0．15），在CaO与矿石质量比为0．12时获得最大烧结强度；而碱度R=2时获得最大的烧结强度；随着MgO含量的增加其烧结强度逐渐降低；而烧结原料中Al2O3质量分数不宜超过2．5％．
The structure of the bonding phases of sinter depends on the properties of melts formed during iron ore hematite sintering. A bench-scale test was therefore carried out to investigate the effect of powdered iron ore composition （SiO2 ,Al2O3, MgO and bacisity） on the sinter strength, of which the change was further explained by the effect of the composition on the viscosity and suface tension of the melt. The results showed that the mass ration of additive CaO to the powdered ore changes in the range from 0.08 to 0.15 and the max compression and rupture strength of sinter are obtained at the ration = 0.12 and, with respect to the changing basicity during sintering, the max strengths are obtained at the basicity R = 2.0. The strengths decrease gradually with the increasing MgO content in hematite, and it is unfavorable if the Al2O3 content exceeds 2.5wt%.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第1期86-89,共4页
Journal of Northeastern University(Natural Science)
基金
教育部博士生访学东北大学项目(28820038)
关键词
铁矿石
烧结
化学成分
强度
iron ore
sinter
chemical composition
strength
