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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.
The interaction between sodium diethyldithiocarbamate (denoted as D) and jamesonite was investigated by cyclic voltammetry and ac impedance spectroscopy. Different electrode processes were observed at different potentials. From -178 ~ 472mV (relative to the standard hydrogen electrode), the surface of jamesonite is mainly the adsorption of hydrophobic substances such as DDTC, PbD2, S0 and the interface capacitance is relatively small.When the electrode potential is higher than 472mV, due to the hydrophobicity of PbD2, S0 and other hydrophobic Sexual substances are oxidized into hydrophilic products such as Pb2 +, SO32-, SO42-, PbSO4, etc. The surface of jasperite is hydrophilic.It is presumed that the potential range of flotation of jamesonite with DDTC For -178 ~ 472mV, the best potential range of 60 ~ 222mV.