铁矿粉同化性与流动性试验研究

Experimental Study on the Assimilability and Fluidity of Ore Powder

基于微型烧结试验,对某钢厂常用的8种铁矿粉的高温特性进行了试验研究,并根据试验结果分析了铁矿粉成分与铁矿粉同化性和液相流动性之间的关系,结果表明:铁矿粉的同化性与液相流动性之间存在倒"V"型关系,SiO_(2)、Al_(2)O_(3)、结晶水含量与铁矿粉的同化性呈正相关关系,而MgO、碱度R与铁矿粉的同化性呈负相关关系;SiO_(2)和Al_(2)O_(3)含量与流动性之间也存在倒"V"型的关系,而MgO含量与流动性分别呈负相关关系;结合铁矿粉的高温特性提出了相应的优化互补配矿原则,为该厂烧结优化配矿提供了理论依据和技术支持。

Based on the micro sintering test,the high temperature properties of eight kinds of iron ore powders commonly used a Steel Company were studied,and the relationship between the composition of iron ore powders and the assimilation properties and fluidity of iron ores were analyzed according to the test results.The results show that there is a reverse"V"type relationship between the assimilation properties and the fluidity of iron ores,and the relationship of SiO_(2),the content of Al_(2)O_(3) and crystal water has positive correlation with the assimilation of iron ore fines.MgO and alkalinity R are negatively correlated with the assimilation of iron ore fines.The relationship between SiO_(2)and Al_(2)O_(3) contents and fluidity also has the reverse"V"type,which is positive first and negative later,while the relationship between MgO content and fluidity is negative respectively.Combined with the high temperature characteristics of iron ore fines,the corresponding principle of optimizing and complementing ore proportioning is put forward,which provides theoretical basis and technical support for sintering optimization of the plant.