摘要
给出了方铅矿自诱导浮选电位区域和电位上下限,热力学计算表明了其意义。伏安曲线和量子化学计算分别用来研究方铅矿表面的阳极氧化和氧化过程中电子转移的微观机制。用表面溶剂提取—化学分析技术建立了自诱导浮选中方铅矿表面的琉水/亲水平衡关系。结果表明,方铅矿表面荷负电的硫原子能转变成电中性的单质硫,导致方铅矿表面疏水。方铅矿浮选回收率与中性硫提取量成正比。
The effective potential range of self-induced flotation of galena and its lower and upper limits have been determined. The results of thermody namical calculation are used to explain the controlling action of the low er and upper potential limits. The surface oxidation of galena and the micro-process of electron transfer involved in the oxidation have been stu died through voltammetry and quantum chemical calculation. The hydro phobicity-hydrophilicity balance for the self-induced galena flotation has been ...
出处
《有色金属》
CSCD
1993年第2期32-37,共6页
Nonferrous Metals
基金
国家自然科学基金
关键词
自诱导浮选
方铅矿
电化学
量子化学
self-induced flotation
galena
electrochemistry
quantumchemistry
