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金属矿山 ›› 2009, Vol. 39 ›› Issue (10): 148-151.

• 安全与环保 • 上一篇    下一篇

某钼尾矿浸泡液pH变化及镍溶出规律研究

莫伟1,马少健1,王桂芳1,2,苏秀娟1,李辉1   

  1. 1.广西大学;2.山东科技大学
  • 出版日期:2009-10-15 发布日期:2011-04-26
  • 基金资助:

    国家自然科学基金项目(编号:50564003)。

Investigation on the pH Variation of the Soaking Solutions and the Rules of Nickel Release from a Molybdenum Tailing

Mo Wei1,Ma Shaojian1,Wang Guifang1,2,Su Xiujuan1,Li Hui1   

  1. 1.Guangxi University;2.Shandong University of Science and Technology
  • Online:2009-10-15 Published:2011-04-26

摘要: 通过105 d的连续静态浸泡试验,研究了某钼尾矿浸泡液pH值及Ni2+离子浓度随浸泡时间的变化规律。结果表明:该尾矿对酸性溶液有很强的中和能力,可将初始pH值为3.5~6.0的酸性溶液在2~8 d内中和到pH=7左右的中性状态并长期维持不变;尾矿粒度越细,经浸泡后Ni2+的溶出浓度越大;总体上,Ni2+的溶出浓度在25 d时达到最高值,此后开始下降并围绕某一平均值发生震荡。  

关键词: 钼尾矿, 静态浸泡, pH值, Ni2+离子溶出浓度

Abstract: After 105 d continuous static soaking tests,the variation rule of the pH value of the soaking solutions and the ion concentration with soaking time for a molybdenum tailing is investigated.The results showed that this tailing can well neutralize the acidic solutions of pH values ranged from 3.5 to 6 to neutral state (pH=7) within 2~8 days and then always maintained this state.The more fine the tailing is,the more thick the Ni2+ ion release solution is.In general,Ni2+ ionic concentration reached its maximum values within 25 d,and then declined,following with oscillating around some average values.

Key words: Molybdenum tailings, Static soaking, pH value, Ni2+ Ion release thickness