钢铁钒钛2025，Vol.46Issue(2)：10-18,9.DOI:10.7513/j.issn.1004-7638.2025.02.002
V-O固溶体氧势及金属钒制备热力学研究
Thermodynamic evaluation on oxygen potential of V-O solid solution and preparation of metallic vanadium
摘要
Abstract
Non-metallic element O dissolves in the V lattice to form a V-O solid solution.The oxygen removal limit of the solid solution depends on the oxygen activity and temperature,but currently,there are few studies on the thermodynamic properties of the V-O solid solution.In this paper,based on the Sieverts'law as the calculation criterion,the thermodynamic data of the V-O system was collected,and the oxygen potential of the solid solution VOy with different oxygen contents was calculated.At the same time,the thermodynamic model was imported into Factsage and a custom database was estab-lished to assist in calculating the phase transition and equilibrium composition of vanadium prepared by the metal thermal reduction method,and to clarify the limit deoxidation ability of reducing agents such as Ca,Mg,and Al.The results show that by reasonably controlling the addition amount of Al and the re-action temperature,the oxygen content in the prepared metallic vanadium can theoretically be reduced to approximately 0.1 wt％-0.5 wt％.When Mg is used as the reducing agent,the metallic vanadium product with an oxygen content of 0.01 wt％-0.1 wt％can be theoretically prepared.The reduction abil-ity of Ca is more excellent,and the oxygen content in the prepared metallic vanadium product is＜0.01 wt％.Increasing the addition amount of C,increasing the reaction temperature,and reducing PCO can theoretically prepare metallic vanadium products with an oxygen content lower than 0.1 wt％.关键词
V-O固溶体/氧势/金属热还原/金属钒/脱氧极限Key words
V-O solid solution/oxygen potential/metal thermal reduction/metallic vanadium/deoxida-tion limit分类
矿业与冶金引用本文复制引用
钟大鹏,于杰,侯勇,喻文昊,吕学伟..V-O固溶体氧势及金属钒制备热力学研究[J].钢铁钒钛,2025,46(2):10-18,9.基金项目
国家自然科学基金青年基金(52304345) （52304345）
中央高校基本科研业务费(2024CDJXY003). （2024CDJXY003）
