Abstract:With the consumption of high-quality iron ore resources,the grade of iron ore raw used by iron making process gradually decreased. The high aluminum raw materials lead to an increase in the Al2O3 content in the blast furnace slag,which has affected the normal operation of the blast furnace. The review focuses on the effect of Al2O3 on the physicochemical properties and structure of blast furnace slag,which will provide scientific basis and theoretical guidance of blast furnace practice for utilization of high alumina raw materials. In particular,the review begins with an introduction to the effect of Al2O3 content on the free running temperature,viscosity,density,surface tension and desulfurization ability of slag,then discussed the structure of alumino-silicate slag and the role of Al2O3 in the slag structure. The relationship between structure and physicochemical properties is introduced through combing with the slag structure information. The current practices of blast furnace operation with high Al2O3 slag system was discussed, and the possibility of the slag system based on alumino-silicate.
吕学伟, 严志明, 庞正德, 白晨光, 梁栋, 谢皓. Al2O3对高炉渣物化性能和结构影响研究综述[J]. 钢铁, 2020, 55(2): 1-10.
LÜ Xue-wei, YAN Zhi-ming, PANG Zheng-de, BAI Chen-guang, LIANG Dong, XIE Hao. Effect of Al2O3 on physicochemical properties and structure of blast furnace slag: review. Iron and Steel, 2020, 55(2): 1-10.
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