Transient Interaction between Molten Iron, Alumina Lining Refractory and Slag
Laboratory experiments of the interaction between molten iron, slag and lining refractory were performed. The transient erosion and reaction with time was investigated, and thus the transient change of the reaction layer and inclusions generated in the molten iron were evaluated by using optical microscope and SEM-EDS. The transient shape and depth of the iron-slag-lining three-phase interface were measured and discussed. For alumina lining materials, the molten iron entered the lining refractory rather than the lining materials dissolved into the iron. The reaction layer included two sub-layers: Fe-rich lining layer adjacent to the iron with more FeO and less Al2O3, and OL-rich lining layer with more Al2O3 and less FeO. Without slag addition before remelting, at the top surface, a meniscus was formed between the lining refractory and the iron. FeO was generated from the reoxidation of the molten iron and FeO entered the space between the lining refractory and the iron along the meniscus. The thickness of the reaction layer increased nearly linearly with the reaction time with an erosion rate of 4.2μm/min. The existence of the FeO strengthen the erosion of the lining refractory by the molten iron.
Transient Phenomena Molten Iron Slag Lining Refractory Inclusions
Yongfeng CHEN Jiling WANG Lifeng ZHANG
School of Metallurgical and Ecological Engineering University of science and Technology Beijing, 100083, China
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-9
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）