Crystallization and heat transfer of CaO-SiO2-based slag for high-Mn-high-Al steel

作     者：Jie Yang Deng-fu Chen Miao-yong Zhu Jie Yang;Deng-fu Chen;Miao-yong Zhu

作者机构：College of Material Science and EngineeringChongqing UniversityChongqing400044China School of MetallurgyNortheastern UniversityShenyang 110819LiaoningChina 

出 版 物：《Journal of Iron and Steel Research International》 (J. Iron Steel Res. Int.)

年 卷 期：2020年第27卷第7期

页      面：788-795页

核心收录：

学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.51874060 and 51904046) the Postdoctoral Science Foundation of Chongqing(Grant No.cstc2019jcyj-bshX0027) 

主　　题：High-Mn-high-Al steel Mold slag Al2O3 accumulation Crystallization Heat transfer 

摘      要：The crystallization and heat transfer of CaO-SiO2-based slag for high-Mn-high-Al steel have been investigated by coupling composition evolution with heat transfer and non-isothermal *** was found that the concentrations of Al2O3 and MnO in the slag were determined by the relative contents of Al and Mn in molten *** temperature of the slag rose with the increase in Al2O3 content first and then fell due to the coupled effects of basicity and Al2O3,and a small amount of MnO cannot change this *** viscosity of slags led to less obvious characterizations of *** crystalline phase analysis suggested that MnO accumulation suppressed the formation of fluorite *** the Al2O3 content increased,the precipitation of cuspidine was replaced by the blocky gehlenite crystals,while the number and the size of nepheline and fluorite crystals both *** to the thickness and the crystallization structure of slags,the heat flux in the slag film first decreased and then increased with higher Al2O3 ***,a new type of CaO-SiO2-based mold slag with high basicity was applied in plant trial,and the change in composition and properties of mold slag was studied.