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首页> 外文期刊>ISIJ international >Industrial Application of Large Rotary Kiln for Recovery of Vanadium from Vanadium Slag Added MnVO4 in Calcium Roasting Process
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Industrial Application of Large Rotary Kiln for Recovery of Vanadium from Vanadium Slag Added MnVO4 in Calcium Roasting Process

机译：MvnO 4 添加钒渣中大型回转窑在钙焙烧中的工业应用

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摘要

Calcification roasting was an effective and environment-friendly way to extract vanadium from vanadium slag. This paper presents a comprehensive study on industrial application of calcium roasting process for large rotary kiln. The study has highlighted the importance of temperature stability using MnVO_(4) for maximizing the recovery of the vanadium. The optimum conditions for recover 87.48–89.65% of vanadium (V) by using MnVO_(4) at M·Fe concentration 1±0.5%, CaO to V_(2)O_(5) ratio 0.58–0.64, MnVO_(4) concentration 50–55%, feed rate 4.44±0.56 kg/s, rotate speed 87–90 s/r, temperature of T2 865±10°C, temperature control curves TE, TF, TG, negative pressure ?10±5 Pa and volume flow ratio of the combustion air to coke oven gas (5–5.5). It was possible MnVO_(4) was not only the additive but also play a key auxiliary effect for CaO with vanadium (V) to Ca_(2)V_(2)O_(7) by studying on the oxidation reaction mechanism.
机译：钙化焙烧是一种从钒渣中提取钒的有效且环保的方法。本文对大型回转窑钙焙烧工艺的工业应用进行了全面的研究。该研究强调了使用MnVO_（4）来保持钒的最大回收率的温度稳定性的重要性。 MnVO_（4）在M·Fe浓度为1±0.5％，CaO与V_（2）O_（5）的比为0.58–0.64，MnVO_（4）的条件下回收Mn（V）的最佳条件为回收钒（V）的87.48-89.65％ 50-55％，进给速度4.44±0.56 kg / s，转速87-90 s / r，T2温度865±10°C，温度控制曲线TE，TF，TG，负压±10±5 Pa和体积燃烧空气与焦炉气的流量比（5-5.5）。通过研究氧化反应机理，认为MnVO_（4）不仅是添加剂，而且对钒（V）对CaO（Ca）（2）V_（2）O_（7）起着关键的辅助作用。

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