电化学研究DDTC在脆硫锑铅矿表面的吸附(英文)

电化学（中英文） ›› 2004, Vol. 10 ›› Issue (2): 145-153.

电化学研究DDTC在脆硫锑铅矿表面的吸附(英文)

余润兰,胡岳华,邱冠周,覃文庆

中南大学资源加工与生物工程学院,中南大学资源加工与生物工程学院,中南大学资源加工与生物工程学院,中南大学资源加工与生物工程学院湖南长沙410083 衡阳师范学院化学与材料科学系湖南衡阳421008 ,湖南长沙410083 ,湖南长沙410083 ,湖南长沙410083

收稿日期:2004-05-28 修回日期:2004-05-28 出版日期:2004-05-28 发布日期:2004-05-28

An Electrochemical Study of DDTC Adsorption Jamesonite

YU Run-lan~

(*1,2), HU Yue-hua~1, QIU Guan-zhou~1, QIN Wen-qing~1 (1.School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China 2.Department of Chemistry and Material Science, Hengyang Normal University, Hengyang 421008, China

Received:2004-05-28 Revised:2004-05-28 Published:2004-05-28 Online:2004-05-28

摘要/Abstract

摘要： 　通过循环伏安法、交流阻抗法研究了二乙基二硫代氨基甲酸钠(以D表示)与脆硫锑铅矿的相互作用.在不同的电位条件下呈现出不同的电极过程.从-178～472mV(相对于标准氢电极),脆硫锑铅矿表面主要是DDTC,PbD2,S0等疏水性物质的吸附,界面电容也比较小.当电极电位高于472mV时,由于PbD2,S0等疏水性物质被氧化成Pb2+,SO32-,SO42-,PbSO4等亲水性产物,脆硫锑铅矿表面是亲水的.由此推测用DDTC做捕收剂浮选脆硫锑铅矿的电位范围为-178～472mV,最佳电位范围为60～222mV.

关键词: 脆硫锑铅矿, 浮选, 电化学

Abstract: The interactions of jamesonite with diethyl dithiocarbamate (DDTC) were studied by AC impedance measurement and cyclic voltammetry. Several electrode processes under different potential conditions were observed. There mainly is the absorption of hydrophobic DDTC. PbD_2, S~0 etc on the surface of jamesonite mineral from -178 mV to 472 mV (vs. SHE) and the interfacial capacitance also is small. When the electrode potential is over 472 mV, the surface of jamesonite mineral is of hydrophilicity due to the fact that hydrophobic PbD_2,S~0 etc are oxidized into hydrophilic products such as Pb~(2+), SO_3~(2-) ,SO_4~(2-), PbSO_4. So it was deduced that the potential range of jamesonite flotation using diethyl dithiocarbmate as a collector is from -178 mV to 472 mV, and its optimum potential range is between 122 mV and 222 mv due to the passive action by the hydrophobic species.

Key words: Jamesonite, Flotation, Electrochemisty

中图分类号:

O647.3

余润兰,胡岳华,邱冠周,覃文庆. 电化学研究DDTC在脆硫锑铅矿表面的吸附(英文)[J]. 电化学（中英文）, 2004, 10(2): 145-153.

YU Run-lan~. An Electrochemical Study of DDTC Adsorption Jamesonite[J]. Journal of Electrochemistry, 2004, 10(2): 145-153.

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https://electrochem.xmu.edu.cn/CN/Y2004/V10/I2/145

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