| 流动体系下黄铁矿-方铅矿原电池反应实验研究 |
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| 引用本文： | 刘庆友,李和平,周丽,代立东.流动体系下黄铁矿-方铅矿原电池反应实验研究[J].地球与环境,2006,34(2):89-94. |
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| 作者姓名： | 刘庆友 李和平 周丽 代立东 |
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| 作者单位： | 1. 中国科学院地球化学研究所地球深部物质与流体作用地球化学实验室,贵州,贵阳,550002;中国科学院研究生院,北京,100039
2. 中国科学院地球化学研究所地球深部物质与流体作用地球化学实验室,贵州,贵阳,550002 |
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| 基金项目： | 中国科学院知识创新工程项目 |
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| 摘 要： | 采用三电极体系,在流动溶液下,改变溶液组分浓度和流速,对黄铁矿和方铅矿组成的原电池腐蚀电流密度和混合电位进行研究,结果表明:Na+离子对原电池反应无明显影响,Fe3+离子能明显加快原电池的腐蚀速度,并且Fe3+浓度越大腐蚀速度越快;溶液流速越大原电池腐蚀速度越快。实验结果对矿山环境污染治理有指导意义。结合混合电位理论和Butler-Volmer方程从理论上对实验结果进行了解释。
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| 关 键 词： | 黄铁矿 方铅矿 原电池反应 腐蚀电流密度 混合电位 流动体系 |
| 文章编号： | 1672-9250（2006）02-0089-06 |
| 收稿时间： | 2005-12-22 |
| 修稿时间： | 2005-12-222006-02-16 |
EXPERIMENTAL STUDY ON GALVANIC INTERACTIONS BETWEEN PYRITE AND GALENA IN A FLOWING SYSTEM |
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| LIU Qing-you,LI He-pin,ZHOU Li,DAI Li-dong.EXPERIMENTAL STUDY ON GALVANIC INTERACTIONS BETWEEN PYRITE AND GALENA IN A FLOWING SYSTEM[J].Earth and Environment,2006,34(2):89-94. |
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| Authors: | LIU Qing-you LI He-pin ZHOU Li DAI Li-dong |
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| Abstract: | In this work a three-electrode system was adopted to investigate the corrosion current density and mixed electrical potential of the galvanic cell made up of pyrite and galena,by changing the solution concentrations and flowing rate.The result showed that changing the solution concentrations of Na has no influence on the corrosion rate,and Fe3 could accelerate the corrosion rate markedly,and the greater the concentrations of Fe3 ,the higher the corrosion rate;the faster the flowing rate,the higher the corrosion rate will be.Experimental results are of directive significance in controlling environmental pollution in mining areas.In combination with the theory of mixed potential and the Butler-Volmer equation the authors theoretically explained the experimental results. |
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| Keywords: | pyrite galena galvanic interaction corrosion current density mixed potential flowing system |
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