The flotation of ultrafine particles is marked with low recovery due to low collision efficiency between particles and bubbles. Carrier-flotation is a method to enhance the recovery by the attachment of fine particles onto larger carrier particles. In this study, the effects of coarse chalcopyrite particles as a carrier on flotation behavior of fine chalcopyrite was investigated by the flotation experiments using 20 g fine chalcopyrite (particle size D₅₀ = 2.3 µm) with a varied amount of carrier particles of different sizes (–75 + 38 µm and –106 + 75 µm) using a 400 mL-mechanically agitated flotation cell. The addition of carrier particles improved the recovery of ultrafine particles into the froth from around 25% (without carrier) to around 80% (with 20 g of carrier, –75 + 38 µm size). Recovery of fine particles was higher with smaller carrier size (–75 + 38 µm) compared with larger carrier size (–106 + 75 µm), though the difference was not significant. Theoretical calculations showed that hydrophobic interaction played a more dominant role compared with van der Waals force in the attachment of fine chalcopyrite particles on the carrier (larger chalcopyrite particles).

由于微粒与气泡之间的碰撞效率低，超细颗粒的浮选回收率低。载体浮选是通过将细颗粒附着到较大的载体颗粒上来提高回收率的方法。在这项研究中，通过使用20克细黄铜矿（粒径D _50）的浮选实验研究了粗黄铜矿颗粒作为载体对细黄铜矿浮选行为的影响。 = 400 µm（= 2.3 µm），并使用400 mL机械搅拌的浮选池，使用各种数量的不同大小（–75 + 38 µm和–106 + 75 µm）的载体颗粒。载体颗粒的添加将泡沫中超细颗粒的回收率从大约25％（不带载体）提高到大约80％（带20 g载体，–75 + 38 µm尺寸）。较小的载体尺寸（–75 + 38 µm）与较大的载体尺寸（–106 + 75 µm）相比，细颗粒的回收率更高，尽管差异并不明显。理论计算表明，与范德华力相比，疏水相互作用在细黄铜矿颗粒（较大的黄铜矿颗粒）附着在载体上的作用更大。