Effect of atmosphere and basicity on softening-melting behavior of primary slag formation in cohesive zone

作     者：Bin-bin Lyu Guang Wang Lian-da Zhao Hai-bin Zuo Qing-guo Xue Jing-song Wang Bin-bin Lyu;Guang Wang;Lian-da Zhao;Hai-bin Zuo;Qing-guo Xue;Jing-song Wang

作者机构：State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijing100083China 

出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)

年 卷 期：2023年第30卷第2期

页      面：227-235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：The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China(Nos.U1960205 and 51804024) 

主　　题：Primary slag Cohesive zone Softening-melting behavior Coke bed Interface characteristic 

摘      要：The softening-melting characteristics of ferrous burden play a crucial role in the thickness and position of the cohesive *** influence of the basicity and experimental atmosphere on the softening-melting behavior of primary slag under slag-coke interaction was investigated using in situ visualization *** mechanism was analyzed using the FactSage software,X-ray diffraction,and electron probe *** softening and melting temperatures of the samples increased with increasing basicity under different *** difference between softening and melting temperatures is smaller in a H_(2) atmosphere than in a CO atmosphere;in H_(2) atmosphere,the range of softening zone in the cohesive zone was significantly *** formed low-melting-point FeO-bearing phases decrease when H_(2) was used as the reducing *** addition,according to FactSage calculations,the high content of metallic iron reduced in the H_(2) atmosphere raised the softening temperature of the primary *** also narrowed and moved downward the cohesive zone due to an increase in softening and melting ***,the increase in basicity promoted the decrease in liquid ratio and improved the permeability of cohesive zone.