（1. School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083，China 2. Ironmaking Section， Qingdao Special Steel Co.， Ltd.， Qingdao 266400， Shandong， China）
Abstract：In order to provide basis for the batching optimization in the sintering production and give better advice on the sintering production, for 6 kinds of iron ore fines of Qinggang sinter, the high temperature basic properties, such as assimilation property, liquid phase generation characteristics, burning loss and decomposition characteristics of crystal water and so on, were researched, and the microstructure were analyzed. And the evaluation model was used to evaluate the iron ore fines. The result showed that the assimilation temperature of all the iron ore fines were less than 1 250 °C, which can satisfy the condition of low temperature sintering, and the iron ore E has the best assimilation property. At 1 240 °C, the liquidity index was suitable for the low temperature sinter, but at 1 280 °C, both the liquidity index and the amount of liquid phase were high. The burning loss and crystal water of the iron ore E reached high lever, and the content of crystal water of the iron ore F was the highest. The microstructure of the 6 kinds of iron ore fines had great difference, the surface of the iron ore C and D ore were smooth, and the water absorbing capacities were bad. Thus, the iron ore C and D were adverse for the improvement of pelleting. While, the surface of the iron ore A and B were rough, so these iron ores were suitable for pelleting. The iron ore fines were divided into four grades based on the evaluation results.
张宏星 ，张建良，刘征建，张亚鹏，闫志武. 基于青钢铁矿粉烧结基础特性的配矿原则探讨[J]. 中国冶金, 2017, 27(11): 7-13.
ZHANG Hong- xing,,ZHANG Jian- liang,LIU Zheng- jian,ZHANG Ya- peng,YAN Zhi- wu. Discussion on ore- blending principle based on sintering foundational properties of iron ore fines of Qinggang. China Metallurgy, 2017, 27(11): 7-13.
2017, Vol. 27 
