Modification of Extracted Vanadium Tailings at High Temperature
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摘要: 借助XRD和SEM,对改性前后的提钒尾渣进行工艺矿物学研究,特别是铁、钒的矿物学特征对还原效果的影响及规律。系统研究了配碳量、还原温度、还原时间对还原效果的影响,结果表明:在配碳量25%、还原温度1 150℃、还原时间2 h的较佳工艺条件下,铁的金属化率达到91.86%,为下一步的电炉熔分奠定了基础。Abstract: By X-ray diffraction (XRD) and scanning electron microscopy (SEM),the process mineralogy of modified and unmodified extracted vanadium tailings,especially the influences of mineralogical characteristics of iron (Fe) and vanadium (V) on the reduction,were studied in this paper. The effects of carbon content,reaction temperature and time on the reduction were systematically investigated.Resultsshow that the metallization rate of Fe reaches to 91.86% under the optimum conditions of 25% carbon content,reaction temperature of 1 150 ℃ and reaction time of 2 h,which lays the foundation for the following smelting separation by arc furnace.
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Key words:
- extracted vanadium tailings /
- mineralogy /
- direct reduction /
- metallization rate
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