Effect of TiO_(2) and BaO on viscosity and potassium removal capacity of blast furnace slag

作     者：Jian-tao Ju Xin-yi Li Liu-le Wei Xiang-dong Xing Jian-tao Ju;Xin-yi Li;Liu-le Wei;Xiang-dong Xing

作者机构：School of Metallurgical EngineeringXi’an University of Architecture and TechnologyXi’an710055ShaanxiChina Research Center of Metallurgical Engineering and Technology of Xi’an University of Architecture and TechnologyXi’an710055ShaanxiChina 

出 版 物：《Journal of Iron and Steel Research International》 (钢铁研究学报（英文版）)

年 卷 期：2024年第31卷第11期

页      面：2675-2683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：financed by the National Natural Science Foundation of China(52174325) Shaanxi Province Innovation Capability Support Plan Project(2023-CX-TD-53) 

主　　题：Blast furnace slag Viscosity Structure Potassium removal capacity BaO TiO_(2) 

摘      要：In order to increase the utilization rate of vanadium–titanium magnetite in blast furnace smelting,the viscosity and potassium removal capacity of CaO–SiO_(2)–Al_(2)O_(3)–MgO–BaO–TiO_(2) slag(CaO/SiO_(2)=1.05,1–5 wt.%BaO,2–20 wt.%TiO_(2))were studied for slag optimization using the cylinder method and slag–metal equilibrium technique,***,the structural properties of the slag were characterized by Fourier transform infrared *** concept of“a ring structure of Ti–O–Siwas proposed to express the change in the viscosity of the blast furnace *** results showed that the viscosity of slag increased with the increase in BaO content while the potassium removal capacity ***,an increase in TiO_(2) content from 2 to 20 wt.%resulted in a decrease in viscosity and an increase in potassium removal *** Fourier transform infrared spectroscopy results showed that the charge compensation of Ba2+can form complex aluminosilicate structure and increase the viscosity of ***,with the increase in TiO_(2) content,Ti4+ions replace Si4+in the silicon-oxygen tetrahedral structure,thereby reducing the degree of polymerization of the silicate network and decreasing the viscosity.