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金属矿山 ›› 2013, Vol. 42 ›› Issue (01): 70-72.

• 矿物工程 • 上一篇    下一篇

黄铁矿表面氰根离子的吸附规律研究

韩跃新1,马艺闻1,朱一民1,高鹏1,赵金菊2,李建波2   

  1. 1.东北大学资源与土木工程学院;2.中矿金业股份有限公司
  • 出版日期:2013-01-15 发布日期:2013-01-23
  • 基金资助:

    * “十二五”国家科技支撑计划项目(编号:2012BAB08B00),教育部新教师基金项目(编号:20110042120041),东北大学青年教师科研启动基金项目(编号:N110301007)。

Research on Adsorption Rule of Cyanide Ions on the Pyrite Surface

Han Yuexin1,Ma Yiwen1,Zhu Yimin1,Gao Peng1,Zhao Jinju2,Li Jianbo2   

  1. 1. Resources and Civil Engineering Institute,Northeastern University;2. Zhongkuang Gold Industry Co.,Ltd.
  • Online:2013-01-15 Published:2013-01-23

摘要: 以黄铁矿为吸附剂、CN-为吸附质,考察了吸附时间、溶液pH值、黄铁矿用量等因素对吸附效果的影响,同时采用红外光谱检测法分析了黄铁矿表面吸附CN-前后的差异,并对吸附结果进行了Langmuir吸附模型拟合。结果表明,黄铁矿对氰化钠的吸附很快,1 min即达到吸附平衡,最大吸附负载达3.81 mg/g,吸附受pH影响很小;氰根离子与黄铁矿有很强的键合吸附作用;黄铁矿颗粒对氰根离子的吸附是以单分子层化学吸附为主的吸附过程。

关键词: 黄铁矿, 氰根离子, 吸附

Abstract: With pyrite as adsorbent and CN- as adsorbate,the impact of adsorption time,solution pH value,dosage of pyrite on adsorption effect are investigated. Meanwhile,the infrared spectroscopy detection method is adopted to analyze the difference before or after CN- absorption on pyrite surface,and adsorption results are fitted with Langmuir adsorption model. The results show that pyrite quickly adsorbs sodium cyanide and reach balance after 1 min with the maximum adsorption load up to 3.81 mg/g. pH has little influence on adsorption of cyanide ion by pyrite; Cyanide ion have a strong bonding adsorption action with pyrite. Adsorption of Pyrite particles to cyanide ion is a monomolecular chemical adsorption process.

Key words: Pyrite, Cyanide ion, Adsorption