CaO-SiO_(2)-MgO-Al_(2)O_(3)-TiO_(2)-CaCl_(2)渣系粘流特性研究  

Study on viscous flow characteristics of CaO-SiO_(2)- MgO-Al_(2)O_(3)-TiO_(2)-CaCl_(2) slag system

作　　者：乔军强 王振飞 潘月军 邢相栋[2] 张建良[2] 徐润生[2] Qiao Junqiang;Wang Zhenfei;Pan Yuejun;Xing Xiangdong;Zhang Jianliang;Xu Runsheng(China National Energy Group Shendong Group Co.,Ltd.,Ordos 719315,Inner Mongolia,China;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]国能集团神东集团有限责任公司,内蒙古鄂尔多斯719315 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《钢铁钒钛》2024年第1期145-151,共7页Iron Steel Vanadium Titanium

基　　金：国家自然科学基金项目(52174325);陕西省创新能力支撑计划(2023-CX-TD-53)。

摘　　要：炉渣的粘流特性与高炉的稳定顺行密切相关。研究了含氯高钛渣(CaO-SiO_(2)-MgO-Al_(2)O_(3)-TiO_(2)-CaCl_(2))的粘度和熔化性温度,并采用傅里叶变换红外光谱(FTIR)和拉曼光谱(Raman)分析其结构演变。结果表明,氯元素的加入可以降低炉渣粘度,简化炉渣结构。由于氯元素在高温下容易蒸发,因此在粘度测试过程中氯含量略有下降。粘性流动活化能的变化趋势与粘度的变化趋势相似。[SiO_(4)]-四面体结构和Ti-O-(Ti或Si)键也会被破坏。Q^(2)和Q^(3)单元的相对面积分数减少,Q^(0)和Q^(1)单元的相对面积分数增加,导致炉渣聚合度降低。The viscous flow characteristics of slag are closely related to the stability of the blast furnace.In this paper,the viscosity and melting temperature of chlorine-containing high-titanium slag(CaO-SiO_(2)-MgO-Al_(2)O_(3)-TiO_(2)-CaCl_(2))were studied,and their structural evolution was analyzed by Fourier transform infrared spectroscopy(FTIR)and Raman spectroscopy.The results show that the addition of chlorine element can reduce the viscosity of the slag and simplify the structure of the slag.Due to the easy evaporation of chlorine element at high temperature,the chlorine content decreased slightly during the viscosity test.The variation trend of viscous flow activation energy is similar to that of viscosity.The[SiO_(4)]−tetrahedral structure and Ti-O-Ti/Si bonds are also broken.The relative area fractions of the Q^(2) and Q^(3) units decreased and the relative area fractions of the Q^(0) and Q^(1) units increased,resulting in a decrease in the degree of slag polymerization.

关 键 词：含氯高钛高炉渣 粘流特性 熔化性温度 炉渣结构 

分 类 号：TF534[冶金工程—钢铁冶金]