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通过在pH 6进行的动电、伏安和静电位测量 ,研究了异丙基黄原酸离子 [(CH3 ) 2 CH -OCS- 2 ]在砷黄铁矿 (FeAsS)上的吸附 ,还在同一pH下测定了在异丙基黄原酸盐离子的溶液中异丙基双黄药 [(CH3 ) 2 CH -OCS2 -S2 CO -CH(CH3 ) 2 ]液滴的动电行为。吸附首先是异丙基双黄药通过黄原酸离子的阳极氧化反应吸附 ,此时对砷黄铁矿的Zeta电位没有影响。然后通过异丙基黄原酸离子与被吸附的双黄药疏水缔合吸附在砷黄铁矿 /水溶液界面上 ,使砷黄铁矿的Zeta电位向负值方向增加。在双黄药 -砷黄铁矿 /水溶液界面上的负电荷限制这两个吸附阶段。微浮选研究表明 ,双黄药使砷黄铁矿的浮选较好。这种浮选不受双黄药 -砷黄铁矿 /水溶液界面上异丙基黄原酸盐离子的极性基团 (OCS- 2 )影响。
The adsorption of isopropylxanthate ion [(CH3) 2 CH -OCS- 2] on arsenopyrite (FeAsS) was investigated by measurement of electrokinetic, voltammetric and electrostatic potentials at pH 6, Under the same pH, the dynamic behavior of the isopropyl xanthate droplets of [(CH 3) 2 CH -OCS 2 -S 2 CO -CH (CH 3) 2] in the solution of isopropyl xanthate was measured. Adsorption first is isopropyl xhoidol by xanthogen ion anodic oxidation reaction adsorption, this time on arsenopyrite Zeta potential has no effect. Then the zeta potential of arsenopyrite increased toward the negative direction by hydrophobic association of isopropylxanthate ions with the adsorbed xanthophylls at the arsenopyrite / aqueous interface. The negative charge on the double xanthate-arsenopyrite / aqueous interface limits these two adsorption stages. Micro-flotation studies have shown that the double xanthate flotation of arsenopyrite better. This flotation is not affected by the anionic groups of isopropyl xanthate (OCS-2) on the azo-pyrite / aqueous interface.