TiO_(2)和MgO对含钛高炉渣冷却过程中物相析出的影响  

Effect of TiO_(2)and MgO on Phase Precipitation During Cooling of Ti-Bearing Blast Furnace Slag

作　　者：历有为 孙长余[1] 杨松陶 王硕 周媛媛 赵振辉 司梓均 LI Youwei;SUN Changyu;YANG Songtao;WANG Suo;ZHOU Yuanyuan;ZHAO Zhenhui;SI Zijun(School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114054,China)

机构地区：[1]辽宁科技大学材料与冶金学院,辽宁鞍山114051

出　　处：《材料研究与应用》2023年第6期1150-1154,共5页Materials Research and Application

基　　金：辽宁省大学生创新创业训练计划项目(S202310146006);国家自然科学基金项目(52174319)。

摘　　要：以CaO-SiO_(2)-MgO-Al_(2)O_(3)-TiO_(2)系含钛高炉渣为研究对象,分别研究TiO_(2)和MgO质量分数对含钛高炉渣结晶行为的影响。结果表明:在1500℃时没有晶体析出,渣系主要以玻璃相存在;当温度为1460、1420和1380℃时,析出的晶体主要为镁铝尖晶石相和(或)钙钛矿相;当TiO_(2)质量分数由10%增加至25%时,镁铝尖晶石相的析出温度明显降低,钙钛矿相的析出温度升高;当MgO质量分数由10%增加至14%时,镁铝尖晶石相的析出温度明显提高,钙钛矿相的析出温度没有明显改变,但钙钛矿相的析出比例增加。This paper takes CaO-SiO_(2)-MgO-Al_(2)O_(3)-TiO_(2)in titanium-bearing blast furnace slag as the research objects,and studies the effect of TiO_(2)and MgO mass fractions on the crystallization behavior of titanium-bearing blast furnace slag.The results show that the slag mainly exists as a glass phase and no crystals precipitate at 1500℃.When the temperature is 1460,1420,and 1380℃,the precipitated crystals are mainly the Mg-Al spinel phase and/or perovskite phase.When the mass fraction of TiO_(2)increases from 10%to 25%,the precipitation temperature of the Mg-Al spinel phase decreases significantly,and the precipitation temperature of the perovskite phase increases.When the mass fraction of MgO increases from 10%to 14%,the precipitation temperature of the Mg-Al spinel phase remarkably increases,and the precipitation temperature of the perovskite phase does not change,but the precipitation proportions of the perovskite phase increases.

关 键 词：含钛高炉渣 TiO_(2) MGO 镁铝尖晶石 钙钛矿 

分 类 号：TF534.1[冶金工程—钢铁冶金]