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采用循环伏安和交流阻抗法研究了脆硫锑铅矿在乙硫氮饱和Ca(OH)2体系中的电化学,讨论了电位调控浮选脆硫锑铅矿的工艺参数。电位在-378～22mV范围内,矿物的界面电容不断减少,介电常数变小,表面产物是疏水性的(CH3)2NCSS-、Pb((CH3)2NCSS-)2和S0;电位在22～222mV范围内时,矿物表面的疏水产物膜迅速破裂,电容增加,介电常数变大,界面亲水性增强。随着电位的继续升高,矿物表面不断产生亲水性离子和Fe(OH)3的沉积;对于乙硫氮饱和Ca(OH)2水溶液体系,脆硫锑铅矿的电位调节浮选的工艺参数应控制在-178～122mV之间,实际工艺中电位控制在-78mV～50mV范围为宜。
Cyclic voltammetry and AC impedance method were used to study the electrochemical behavior of jamesonite in a B (superscript 2 +) - saturated Ca (OH) 2 system. The process parameters of flotation of jamesonite were discussed. (CH3) 2NCSS-, Pb ((CH3) 2NCSS-) 2 and S0 with potentials ranging from -378 to 22 mV, the dielectric constant of the minerals decreases, In the range of 222mV, the hydrophobic product film on the mineral surface rapidly ruptures, the capacitance increases, the dielectric constant increases, and the hydrophilicity of the interface increases. With the increase of potential, the deposition of hydrophilic ions and Fe (OH) 3 on the surface of minerals continuously occurs. For the system of saturated aqueous solution of bismuth sulphate saturated Ca (OH) 2, the potential flotation process of jamesonite Parameters should be controlled between -178 ~ 122mV, the actual process potential control in the -78mV ~ 50mV range is appropriate.