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| Influence factors of fluidity characteristic number of iron ore powder |
| FU Zhong-wang1，MO Chao-xing2，CHEN Xiao-min1，ZHAO Yong1,3，YUCHI He-peng1，WU Keng1 |
（1. State Key Laboratory of Advanced Metallurgy， University of Science and Technology Beijing， Beijing 100083， China
2. Guangxi Liuzhou Iron and Steel Group Co.， Ltd.， Liuzhou 545002， Guangxi， China
3. Technology Institute of Shougang Group Co.， Ltd.， Beijing 100041， China） |
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Abstract In order to determine the rule of liquid phase fluidity of iron ore fines， the fluidity characteristic number was used to characterize the fluidity of the liquid sintering phase. The characteristic number consists of kinds of important process information， including the actual temperature of the sintering production. Consequently， the characteristic number can be used to distinguish the fluidities among different iron ore powders objectively and accurately. By changing the chemical composition of the iron ore powder， the influence of the non-iron containing oxide on the fluidity characteristic number was investigated. The results show that with the increasing of the mass percent of SiO2， Al2O3 and MgO in iron ore powders， the flow temperature of the liquid increases gradually， the flow rate decreases gradually， and the fluidity characteristics number decreases in different levels. Therefore， the mass percent of the three compositions， SiO2， Al2O3 and MgO， should be controlled within a certain range. The effect of carbon on the fluidity characteristic number of iron ore on the type of the iron oxide in ore powder.
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Received: 12 April 2018
Published: 24 December 2018
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2018, Vol. 53 
