磷铁合金精炼脱钛、锰、钒热力学分析  

THERMODYNAMIC ANALYSIS OF TITANIUM,MANGANESE AND VANADIUM REFINING OF FERROPHOSPHORUS ALLOY

作　　者：常朝 王海娟[2] 王勇[4] Chang Chao;Wang HaiJuan;Wang Yong(Ganjiang Innovation Academy,Chinese Academy of Sciences;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing;Institute of Process Engineering,Chinese Academy of Sciences)

机构地区：[1]中国科学院赣江创新研究院 [2]北京科技大学冶金与生态工程学院 [3]中国科学院过程工程研究所 [4]中国科学院过程工程研究所,北京100080

出　　处：《河南冶金》2021年第6期5-8,52,共5页Henan Metallurgy

基　　金：河南省中国科学院科技成果转移转化项目(2020109)。

摘　　要：系统研究了在CaO-MgO-SiO_(2)渣系条件下,磷铁合金在气体吹炼过程中的脱钛、锰、钒的反应热力学。计算结果表明,在1500~1700 K条件下,氧气吹炼法可将合金中的钛、锰、钒氧化,并生成相应的氧化物转移至渣相,且温度越低越有利于杂质元素氧化。精炼时氧分压对于磷的氧化影响较大,合理控制氧分压或改变氧化剂类型可有效控制磷含量。渣系的加入可提高反应初期的脱钛速率,对比实验和分析结果,发现钛和锰含量之间不存在平衡关系;锰和钒之间存在平衡关系,因此精炼时需对于渣系中氧化物的组分和含量进行合理控制。In this paper,the reaction thermodynamics of detitanium,manganese and vanadium of ferrophosphorus alloy in gas blowing process with CaO-MgO-SiO_(2)slag system was studied systematically.The results show that the oxidation of titanium,manganese and vanadium in the alloy can enter the slag phase by oxygen blowing under the condition of 1500~1700 K,and the lower the temperature,the more favorable the oxidation of impurity elements.Oxygen partial pressure has a great influence on phosphorus oxidation during refining.Reasonable control of oxygen partial pressure or change of oxidant type can effectively control phosphorus content.The addition of slag system can improve the rate of titanium removal at the initial stage of the reaction,and there is no equilibrium relationship between titanium and manganese content.There is a balance between manganese and vanadium,so it is necessary to control the composition and content of oxides in slag system reasonably during refining.

关 键 词：合金 气体吹炼 脱钛 脱锰 脱钒 热力学 

分 类 号：TF56[冶金工程—钢铁冶金]