Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第12卷    第5期    总第50期    2002年10月

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文章编号:1004-0609(2002)05-1060-05
方铅矿浮选的机械电化学行为
胡岳华, 孙  伟, 覃文庆

(中南大学资源加工与生物工程学院,
 长沙 410083
)

摘 要: 运用机械电化学技术,研究了磨矿介质类型、机械力的大小对矿物电极电位和表面反应电流的影响,并考察了矿物与矿物之间,矿物与介质之间存在的腐蚀电偶作用,发现这些作用会对硫化矿表面的氧化还原反应机制产生影响,进而影响到矿物表面的疏水和亲水性。硫化矿在不同机械力下的表面形貌的研究进一步证明了上述结论。

 

关键字: 方铅矿; 电极电位; 机械电化学; 电位调控浮选

Mechanics-electrochemistry action in PbS flotation
HU Yue-hua, SUN Wei, QIN Wei-qing

College of Resource Processing and Biology Engineer,
 Central South University. Changsha 410083, China

Abstract:A special cell was designed to study mechanical electrochemistry phenomena in grinding environment. It was found that the grinding media type and mechanical pressure have a pronounced effects on the potential and current of the mineral surfaces; The electrode potential of galena decreases with the increase of mechanical pressure on it and changes with the different grinding media following the order of iron >sphalerite>pyrite. The results show that these effects can change activity of surface, which have an important effect on reaction mechanism.

 

Key words: pyrite; electrode potential; mechanical electrochemistry; potential-controlled flotation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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