小分子有机抑制剂双(羧甲基)三硫代碳酸钠(DBT)是一种铜钼分离选择性抑制剂.动电位与红外光谱分析结果表明,DBT在黄铜矿表面的吸附强于辉钼矿,X射线光电子能谱进一步证明DBT吸附在黄铜矿表面,抑制剂DBT与在黄铜矿表面的吸附以物理吸附为主.铜钼混合精矿浮选分离试验结果表明,DBT是一种潜在的环境友好型铜钼分离抑制剂.
This work focuses on the organic depressant, disodium bis(carboxymethyl) trithiocarbonate (DBT), as a selective depressant in copper-molybdenum sulfide flotation separation. Micro-flotation, Zeta potential, FTIR and XPS measurements were carried out to investigate the selective depression mechanism of DBT on chalcopyrite. Zeta potential and FTIR measurements revealed that DBT had higher affinity for chalcopyrite than molybdenite and the XPS results of chalcopyrite before and after treatment with DBT further proved that DBT adsorbed on chalcopyrite surface. The investigation indicates that the mechanism of DBT adsorbing on chalcopyrite is mainly physical adsorption. Locked circuit experiments were carried out and the results showed that DBT could be considered as a cleaner option in commercial Cu-Mo flotation separation circuits.
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