摘要
在烧结过程中维持一定数量的熔体对烧结矿的产品率和强度非常重要。熔体通过粘结层快速展开而获得烧结矿固相粘结相的微观结构。实验研究了不同矿石特性对CaO.Fe2O3熔体渗透行为的影响。渗透性测试可用来观察最初熔体的扩展情况。实验主要通过矿石中二氧化硅、三氧化铝的质量分数,以及脱水后的矿石表面形态,来分析熔体在矿石间的渗透行为。实验结果表明,随矿石中二氧化硅、三氧化铝和结合水量的增加,CaO.Fe2O3熔体对矿石的渗透行为受到抑制。
It is important to maintain a certain amount of melt during sintering of iron ores to improve yield and strength of sinter product. The rapid spreading out of the initial melt through adhering layer seems to be essential to achieve solid bonding phase in microstructure in sinter. The influence of iron ore characteristics on flowing behavior of CaO·Fe2O3 melt was investigated. Penetrating tests were conducted to demonstrate the spreading behavior of the initial melt. Based on chemical composition（silica; alumina）of ores and morphology of the ore surface after dehydration, the penetrating behavior of melt into iron ore was analyzed. The experimental results show that the penetrating behavior is restrained as the increasing of silica, alumina and combine water.
出处
《中国冶金》
CAS
2007年第7期51-54,61,共5页
China Metallurgy
关键词
铁矿石
烧结
成块
初熔体
渗透
iron ore
sinter
agglomeration
initial melt
penetrating
