钛精矿配碳还原的过程优化

攀西地区钛精矿成分复杂,性质特殊.为了探明碳热还原钛精矿的机理,得出不同配碳量、温度、碱度对钛精矿碳热还原反应的影响以及钛精矿碳热还原最优条件,采用HSC Chemistry 6.0软件对钛精矿配碳还原过程中铁、钛和钒的起始还原温度、金属含量、金属化率等进行了计算.结果表明:随着温度的增加,还原率逐渐增加;配碳量对还原反应的影响较大,当配碳量增加时,还原反应开始温度逐渐降低;碱度的增加对金属铁的回收率影响不大,对金属钒和钛的影响较大;当温度为1600℃、碱度为1、配碳量为14%时,对金属铁、钛、钒的回收效果最好,铁回收率可以达到99%以上,钛回收率为0.0147%,钒的回收率为25.5%.

Process Optimization of Reducing Ilmenite Using Carbon

The compositions of ilmenite concentrate in Panxi Area are complex, and its properties are special.In order to explore the mechanism and obtain effects of carbon content, temperature and basicity on carbothermal reduction of ilmenite concentrate, the starting reduction temperature, metal content and metal metallization rate were calculated by HSC Chemistry 6.0 software.The results indicated that the reduction rate of metal gradually increased with the increase of temperature;the carbon content showed a great influence on carbothermal reduction;the temperature of starting reduction gradually decreased as the increase of carbon content.The increase of basicity had little effect on metal iron recovery, but had great effect on titanium and vanadium.When the temperature was 1 600 ℃, the basicity was 1, and the amount of carbon was 14%, the recoveries of iron, titanium and vanadium were the highest, which were more than 99%, 0.0147% and 25.5%, respectively.