钢铁钒钛2025，Vol.46Issue(3)：12-17,6.DOI:10.7513/j.issn.1004-7638.2025.03.003
钒渣高效提取冶金:机械活化强化钠化提钒技术
Efficient metallurgical extraction of vanadium slag:mechanochemically enhanced sodium salt roasting vanadium extraction process
摘要
Abstract
To resolve the low conversion rate in single-pass roasting and ring formation in rotary kilns during conventional sodium roasting-water leaching process,this study proposed an innovative mechan-ical activation-granulation co-pretreatment technology.High-energy ball milling was introduced to pro-mote phase dissociation and microstructure modification of vanadium slag,significantly enhancing its reactivity.Granulation process was optimized to improve heat transfer uniformity and oxidation rate of raw materials.Through XRD,laser particle size analysis,and BET measurements,the physicochemical evolution of vanadium slag was systematically characterized.Results indicate that mechanical activa-tion can cause lattice distortion and diffraction peak broadening.It reduces the average particle size of vanadium slag from 43.035 μm to 7.627 μm and increases the specific surface area from 0.725 m2/g to 2.514 m2/g.The optimal roasting temperature is reduced by 50 ℃,achieving a 95.38％vanadium leach-ing rate in single-pass roasting.This technology not only improves vanadium yield at lower temperat-ures but also effectively prevents rotary kiln ring formation,enabling an efficient and clean extraction process.关键词
钒渣/机械活化/钠化焙烧/浸出率Key words
vanadium slag/mechanical activation/sodium roasting/leaching rate分类
矿业与冶金引用本文复制引用
谯露,向俊一,黄青云,李兰杰,吕学伟..钒渣高效提取冶金:机械活化强化钠化提钒技术[J].钢铁钒钛,2025,46(3):12-17,6.基金项目
国家自然科学基金(52474323),重庆科技大学研究生创新计划项目(YKJCX2420221). （52474323）
