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金属矿山 ›› 2013, Vol. 42 ›› Issue (01): 90-93.

• 矿物工程 • 上一篇    下一篇

含氟助浸剂对石煤酸浸提钒的影响

赵杰,张一敏,黄晶,刘涛,王非,王一,刘娟   

  1. 武汉科技大学资源与环境工程学院
  • 出版日期:2013-01-15 发布日期:2013-01-23
  • 基金资助:

    * “十二五”国家科技支撑计划重点项目(编号:2011BAB05B01),环保部公益性项目(编号:201009013)。

Study on the Impact of F-contained Leaching Agent on Acid Leaching of Vanadium from Stone Coal

Zhao Jie,Zhang Yimin,Huang Jing,Liu Tao,Wang Fei,Wang Yi,Liu Juan   

  1. College of Resource and Environmental Engineering,Wuhan University of Science and Technology
  • Online:2013-01-15 Published:2013-01-23

摘要: 以湖北某地经空白焙烧的石煤为对象,研究了含氟助浸剂A对酸浸提钒过程的影响。结果表明,含氟助浸剂中的F-能促进白云母晶体结构中Si—O键及Al—O键的断裂、破坏云母结构、疏通含钒矿物的孔洞,为酸与石英、长石等含硅铝的矿物发生反应提供便利,表现在热力学上就是与白云母发生反应的ΔG降低;宏观上表现为钒浸出率显著提高,试验确定的最佳条件下的钒浸出率为85.37%,比硫酸直接浸钒高28.04个百分点。

关键词: 石煤, 酸浸, 含氟助浸剂, 热力学

Abstract: Regarding the stone coal roasted without any additive from Hubei province as the research target,the impact of F-contained leaching agent A on acid leaching of vanadium was studied. The results showed that F- in F- contained leaching agent A can break Si—O bond and Al—O bond in muscovite crystal structure,destroy the mica structure,and clear the pores of vanadium-contained minerals,thus providing a convenience for the reaction of acid with silicoaluminophosphate minerals such as quartz and feldspar etc..,The addition of F- contained leaching agent can lower the ΔG of the reaction of muscovite on thermodynamics; On the view of macroscopic,it can greatly improve the leaching rate of vanadium. Under the optimum conditions,the leaching rate of vanadium reached 85.37% and increased by 28.04%,compared with vanadium leaching directly with sulfuric acid.

Key words: Stone coal, Acid leaching, F-containing leaching agent, Thermodynamics