In this study, the different effects of Na⁺ and K⁺ in salt water on chalcopyrite flotation in the presence of bentonite were understood. Generally, decreasing the yield stress of bentonite at high salt concentration facilitated the separation between chalcopyrite and bentonite. Moreover, K⁺ was superior to Na⁺ to reduce the yield stress, but both copper recovery and grade were lower. Under the same concentration of Na⁺ and K⁺, there was little difference in either mass-water recovery or bentonite recovery. The lower copper recovery and grade was related with the glue-like structure of bentonite in KCl solution which could stick or entangle with the adjacent chalcopyrite. The modification of bentonite morphology was due to the interaction between potassium ions and bentonite. The results in this study provide an insight into surface morphology in chalcopyrite-bentonite flotation when using monovalent cations, especially for K⁺.

在这项研究中，了解了盐水中 Na ⁺和 K ^+在膨润土存在下对黄铜矿浮选的不同影响。一般来说，在高盐浓度下降低膨润土的屈服应力有利于黄铜矿和膨润土的分离。此外，K ⁺优于 Na ⁺以降低屈服应力，但铜回收率和品位均较低。在相同浓度的 Na ⁺和 K ^+下，在质量水回收或膨润土回收方面几乎没有差异。较低的铜回收率和品位与膨润土在KCl溶液中的胶状结构有关，可与相邻的黄铜矿粘附或缠结。膨润土形态的改变是由于钾离子和膨润土之间的相互作用。^{本研究的结果提供了对使用一价阳离子，尤其是 K +}时黄铜矿-膨润土浮选的表面形态的深入了解。