FeO-V_2O_5二元系在980℃下的平衡  

Thermodynamic equilibrium of binary system FeO-V_2O_5 at 980℃

作　　者：张生芹[1,2] 谢兵[1] 曹海莲[1] 管挺[1] 

机构地区：[1]重庆大学材料科学与工程学院,400044 [2]重庆科技学院冶金与材料工程学院,401331

出　　处：《中国有色冶金》2010年第2期70-73,共4页China Nonferrous Metallurgy

基　　金：国家重点基础研究发展计划:2007CB613503

摘　　要：FeO和V_2O_5是含钒钢渣中的两个主要组分,其间的反应决定着渣的物性。本文通过计算FeOV_2O_5二元系可能发生化学反应的热力学参数,发现FeO和V_2O_5之间生成Fe_2O_3和V_2O_4(VO_2),且在不同条件下这四种物质可继续反应生成复合氧化物FeVO_4、FeV_2O_4或Fe_3O_4。通过X射线衍射法验证了FeO为28.5%、45%和50%、65%时,FeO-V_2O_5二元系在氩气保护下、980℃反应10 h的平衡物质分别为FeVO_4、V_2O_5、V_2O_4(VO_2),FeVO_4、Fe_2O_3、V_2O_5、V_2O_4(VO_2)和FeVO_4、Fe_2O_3、V_2O_4(VO_2),即随着FeO含量的增加,将有部分的FeO被氧化成Fe_2O_3,而V_2O_5逐渐被消耗完而消失。FeO and V2O5 are two main components for V-bearing steelmaking slag. The reaction between them decides the physico-chemical character of the slag. Thermodynamic parameters of the chemical reaction in binary system FeO-V2O5 are calculated. FeO and V2O5 can form into Fe2O3 and V2O4（VO2）. And under the different conditions they continue react to form composite oxides FeVO4,FeV2O4 or Fe3O4. In the binary system FeO-V205 , when FeO is 28.5%, 45% and 50%, 65%, in argon gas, at 980℃ , the reaction going on 10 hours, FeVO4, V2O5, V2O4（VO2） and FeVO4, Fe203, V2O5, V2O4（VO2） and FeVO4, Fe2O3, VEO4（VO2） are found by x-ray diffraction method. Along with FeO increased, part of FeO would be oxidized to Fe2O3 , and V2O5 would be used up.

关 键 词：FeO—V2O5二元系 平衡 热力学计算 

分 类 号：TF801[冶金工程—有色金属冶金]