Grinding media have significant influence on the flotation of chalcopyrite and pyrite. This effect is mainly related to the change in the surface properties of chalcopyrite and pyrite. This paper investigates the influence of steel ball and nano-ceramic ball grinding on the floatability of chalcopyrite and pyrite. Flotation results, as well-scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet spectrophotometer, and zeta potential measurement results indicate that nano-ceramic ball grinding is beneficial to the flotation of chalcopyrite. Flotation results also indicate that chalcopyrite has better floatability after nano-ceramic ball grinding compared with steel ball grinding. Results of adsorption experiments show that nano-ceramic ball grinding contributes to the adsorption of isobutyl xanthate to chalcopyrite. XPS and SEM techniques demonstrated that steel ball grinding easily produces oxidation species at the surface of chalcopyrite, thereby reducing its floatability. Results from this study also confirmed that steel ball grinding is beneficial to the flotation of pyrite. Therefore, nano-ceramic media grinding produces better selective flotation in chalcopyrite than steel media grinding.

研磨介质对黄铜矿和黄铁矿的浮选有重要影响。该作用主要与黄铜矿和黄铁矿的表面性质的变化有关。本文研究了钢球和纳米陶瓷球磨削对黄铜矿和黄铁矿浮性的影响。浮选结果，如扫描电子显微镜（SEM），X射线光电子能谱（XPS），紫外分光光度计和Zeta电位测量结果表明，纳米陶瓷球磨对黄铜矿的浮选是有益的。浮选结果还表明，与钢球磨相比，纳米陶瓷球磨后的黄铜矿具有更好的浮性。吸附实验结果表明，纳米陶瓷球磨有助于黄原酸异丁酯向黄铜矿的吸附。XPS和SEM技术表明，钢球磨削很容易在黄铜矿表面产生氧化物质，从而降低了浮选性。这项研究的结果还证实，钢球磨削有利于黄铁矿的浮选。因此，与陶瓷介质研磨相比，纳米陶瓷介质研磨在黄铜矿中产生更好的选择性浮选。