东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (11): 1574-1577.DOI: 10.12068/j.issn.1005-3026.2014.11.013

• 材料与冶金 • 上一篇    下一篇

酸浸对钙化焙烧提钒工艺钒浸出率的影响

张菊花1，张伟1，张力1，顾松青2   

  1. (1东北大学 材料与冶金学院， 辽宁 沈阳 110819； 2中国铝业股份有限公司郑州研究院， 河南 郑州450041)
  • 收稿日期:2013-11-25 修回日期:2013-11-25 出版日期:2014-11-15 发布日期:2014-07-03
  • 通讯作者: 张菊花
  • 作者简介:张菊花(1985-)，女，山西忻州人，东北大学博士研究生；顾松青(1946-)，男，江苏无锡人，教授级高级工程师，博士生导师.
  • 基金资助:
    钢铁冶金及资源利用教育部重点实验室开放基金资助项目(FMRU2007K10).

Effect of Acid Leaching on the Vanadium Leaching Rate in Process of Vanadium Extraction Using Calcium Roasting

ZHANG Juhua1， ZHANG Wei1， ZHANG Li1， GU Songqing2   

  1. 1. School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China; 2. Zhenzhou Research Institute of China Aluminum Corporation， Zhenzhou 450041， China.
  • Received:2013-11-25 Revised:2013-11-25 Online:2014-11-15 Published:2014-07-03
  • Contact: ZHANG Juhua
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摘要： 采用稀硫酸浸出法提取钙化焙烧后钒渣中的钒，考察了浸出参数:物料粒度、体系pH值、浸出温度和时间、液固比(L/S)、搅拌速度对钒及杂质元素浸出率的影响.结果表明:物料粒度小于75μm时对提高钒浸出率影响较小；液固比从2∶1增加到7∶1，搅拌速度由100增加到500r/min时，钒浸出率增长幅度均低于3%；钒浸出率在浸出前15min内迅速升高，之后增长变缓；浸出体系pH值对钒及杂质浸出率影响显著，pH值为2~3时钒浸出率达90%，杂质元素Ca，Mn，Mg，Al，Si，P浸出率为10%~30%；在较佳浸出条件下:粒度96～75μm，pH值为25，温度55℃，时间30min，L/S为3，搅拌速度500r/min，钒浸出率超过91%.

关键词: 钒, 钒渣, 酸浸, 钙化焙烧, 提钒, 钒浸出率

Abstract: Sulfuric acid leaching was used to recover vanadium from calcium roasting vanadium slag. The effects of particle size， pH， leaching temperature， time， ratio of liquid to solid (L/S)， stirring speed on the leaching rate of vanadium and impurities were investigated. The results showed that the vanadium leaching rate increases slowly when the particle size is smaller than 75 μm， and it is improved by less than 3% with increasing L/S from 2∶1 to 7∶1 and the stirring speed from 100 to 500r/min. The pH value has great effect on vanadium recovery. The leaching rate of vanadium reaches over 90%， and the leaching rate of impurities， like Ca， Mn， Mg， Al， Si， P， are 10%~30% in pH range from 2 to 3. Under the optimal conditions of particle size of 9675 μm， pH of 25， temperature of 55 °C， time of 30 min， L/S of 3 and stirring speed of 500 r/min， the vanadium leaching rate is over 91%.

Key words: vanadium, vanadium slag, acid leaching, calcium roasting, vanadium extraction, vanadium leaching rate

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