| 电化学方法研究FXL-14捕收黑钨矿机理 |
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| 引用本文： | 朱玉霜,肖有明.电化学方法研究FXL-14捕收黑钨矿机理[J].中南大学学报(自然科学版),1987(3). |
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| 作者姓名： | 朱玉霜 肖有明 |
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| 作者单位： | 中南矿冶学院化学系，中南矿冶学院化学系 |
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| 摘 要： | 本文用电化学方法研究FXL-14(十四烷基亚氨基二次甲基膦酸)捕收黑钨矿的机理,为此制备了黑钨矿碳糊电极,用等腰三角波电位法测定该电极在FXL-14溶液中的微分电容和吸附热,从而得出FXL-14在黑钨矿表面的吸附属化学吸附的结论。
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| 关 键 词： | 电化学过程 黑钨矿 捕收(矿物) 碳糊(电极用) 碳电极 化学吸附 膦酸 亚胺基 烷烃 捕收剂 |
A STUDY OF FXL_(14) WOLFRAMITE ADSORPTION MECHANISM BY ELECTROCHEMICAL METHOD |
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| Zhu Yushuang,Xiao Youming.A STUDY OF FXL_(14) WOLFRAMITE ADSORPTION MECHANISM BY ELECTROCHEMICAL METHOD[J].Journal of Central South University:Science and Technology,1987(3). |
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| Authors: | Zhu Yushuang Xiao Youming |
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| Institution: | Department of Chemistry |
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| Abstract: | In this paper, adsorption mechanism of the collector FXL-14 (tetradecyl imino- bimethyl phosphonic acid) by wolramite was investigated by means of electrochemical method. For this purpose, carbon paste electrode (wolframite + carbon + paraffin wax) was prepared. With the carbon paste electrode, the problem of poor conductivity of wolframite was solved. Double-layer capacitance of carbon paste electrode was measured with triangular potential sweep, and adsorption heat was estimated. According to the value of adsorption heat (Q=10. 6 kcal/mol), we can conclude that FXL-14 wolframite Chemical adsorption is reasonable. The proposed adsorption mechanism is: in lower pH (pH= 3--7.), the collector adsorpts on the ore surface directly with forming coordinate covalence bond, whereas in higher pH (pH>9), the collector adsorpts on the surface by exchanging adsorption with |
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| Keywords: | electrochemical process wolframite collecting carbon pastes(for electrodes) corbon electrodes chemical adsorption phosphonic acid imino group alkane collectors |
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