V含量对钒钛生铁高温氧化性能的影响  

Effect of V Content to Oxidation Performance of V&Ti-bearing Pig Iron under High Temperature

作　　者：赵静瑞 张朝晖[1] 邢相栋[1] 折媛[1] 权杰 ZHAO Jingrui;ZHANG Zhaohui;XING Xiangdong;SHE Yuan;QUAN Jie(School of Metallurgical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,Shanxi,China)

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《炼铁》2024年第4期63-67,共5页Ironmaking

基　　金：陕西省自然科学基金联合基金资助项目(2019JLP-05)。

摘　　要：为探究不同V含量对钒钛生铁高温氧化性能的影响规律,采用静态增重法绘制试样质量随时间变化的曲线,通过扫描电镜、能谱和XRD等分析手段研究了800℃下不同V含量钒钛生铁的高温氧化性能。结果表明:①钒钛生铁的氧化增重与时间呈线性关系;V的加人会提高试验铁的氧化速率;②随着V含量的增加,氧化后的试样铁表面孔洞数量增多且孔径变大后趋于闭合;③铁试样中V含量较高时会造成较强的内氧化并促进Ti的氧化,当V质量分数高于0.3%,氧化层中主要氧化物为Fe_(2)O_(3)、V_(2)O_(3)和少量的TiO_(2),铁水凝固物的氧化程度明显上升。To study the effect law of different V contents on the oxidation performance of V&Ti-bearing pig iron under high temperature,the static additive weighing method is adopted to generate a curve of the specimen mass over time,and the oxidation performance of pig iron containing different V contents under 800 is studied by means of scanning electron microscopy,energy spectroscopy and XRD.The results indicate:(1)the increase of oxidative weight of the V&Ti-bearing pig iron linearly relates with the time;addition of V content will increase the oxidation rate of the iron specimen;(2)with the increase of V content,the number of pores on the oxidized iron specimen surface increases,and after becoming larger,the pore tends to close;(3)high V content in the iron specimen will cause strong internal oxidation and promote the oxidation of Ti,when the mass fraction of V is higher than 0.3%,the main oxides in the oxidization layer are Fe_(2)O_(3),V_(2)O_(3)and a small amount of TiO_(2).The oxidation of hot metal solid enhances significantly also.

关 键 词：钒钛生铁 V含量 高温氧化 内氧化 氧化机理 

分 类 号：TF53[冶金工程—钢铁冶金]