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钒钛磁铁矿固态直接还原的动力学研究

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在温度为1 100~1 350℃及惰性气体保护条件下,对钒钛磁铁矿进行了等温直接还原试验,研究了还原温度、时间等还原条件对还原速率和金属化率的影响.结果表明:在温度为1 150~1 350℃时,初始30 min的还原速率高,之后还原缓慢;动力学分析结果表明,在温度1 100~1 350℃,钒钛磁铁矿内配碳直接还原反应受三维扩散控制.
Kinetics study on solid-state direct reduction of vanadium-titanium magnetite
In the temperature range of 1 100-1 350 ℃,the isothermal direct reduction experiment of vanadium-titanium magnetite was carried out under the protective atmosphere of inert gas.The influences of reduction temperature and time on the reduction rate and the metallization rate were studied.The results showed that when the temperature was at 1 150-1 350 ℃,the reduction rate was high in the initial 30 min,and then the reduction became slow.The dynamic analysis results showed that at the temperature of 1 100-1 350 ℃,the direct reduction reaction of carbon-burdened vanadium-titanium magnetite was controlled by three-dimensional diffusion.

vanadium-titanium magnetitesolid-state direct reductionkinetics

曹立军、刘道献

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唐山志威科技有限公司技术处,河北唐山064200

钒钛磁铁矿 固态直接还原 动力学

2017

钢铁研究
武汉钢铁(集团)公司

钢铁研究

CSTPCD
影响因子:0.314
ISSN:1001-1447
年,卷(期):2017.45(1)
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