| EDTA二钠钙对十二胺体系中菱锌矿浮游性的影响 |
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| 引用本文： | 张威,毕洪山,张津,李国栋,郝海永,韩聪,魏德洲,沈岩柏.EDTA二钠钙对十二胺体系中菱锌矿浮游性的影响[J].矿产保护与利用,2018,0(3):124-129. |
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| 作者姓名： | 张威 毕洪山 张津 李国栋 郝海永 韩聪 魏德洲 沈岩柏 |
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| 作者单位： | 东北大学 资源与土木工程学院，辽宁 沈阳 110819 |
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| 基金项目： | 国家自然科学基金资助项目51674067国家自然科学基金资助项目51422402中央高校基本科研业务费项目N150101001中央高校基本科研业务费项目N160106004中央高校基本科研业务费项目N170106005 |
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| 摘 要： | 通过单矿物浮选试验，研究了不同条件下乙二胺四乙酸二钠钙（EDTA二钠钙）对十二胺（DDA）体系中菱锌矿浮游性的影响规律。结果表明:当pH值在9.2~11.1范围时，EDTA二钠钙对硫化钠活化后的菱锌矿虽无捕收性，但能够增强十二胺对菱锌矿的捕收能力；EDTA二钠钙以40%的质量比取代十二胺并用于浮选菱锌矿时，可以获得比单独使用十二胺更好的浮选效果。浮选溶液化学计算、矿物溶解试验和动电位测试的结果表明，EDTA二钠钙通过促进菱锌矿表面Zn2+的溶解来降低矿物表面的电位，从而提高菱锌矿的浮选回收率。
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| 关 键 词： | 菱锌矿 十二胺 乙二胺四乙酸二钠钙 浮选 |
| 收稿时间： | 2018-03-30 |
Effect of EDTA Na2-Ca on the Pelagic Activity of Smithsonite in Dodecylamine System |
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| Affiliation: | School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China |
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| Abstract: | The influence of ethylenediamine tetraacetic acid disodium calcium (EDTA Na2-Ca) on the flotability of smithsonite in the dodecylamine (DDA) cation flotation system was investigated by single-mineral flotation test. The results showed that EDTA Na2-Ca could not collect smithsonite activated by sodium sulfide, but could enhance the collecting ability of DDA at pH 9.2~11.1. The better flotation performance could be achieved when the mixed collector with 40% mass ratio of DDA replaced by EDTA Na2-Ca was used. The results of flotation solution chemical calculation, mineral dissolution tests, and dynamic potential tests showed that EDTA Na2-Ca significantly improved the flotation recovery of smithsonite by promoting the dissolution of Zn2+ on the smithsonite surface and reducing the potential of the mineral surface. |
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