提出了应用活性油泡 (即被含有捕收剂的油薄层所复盖的气泡 )作为浮选载体的新概念。油膜除了使细颗粒团絮作用外 ,向油相中添加可溶于水的捕收剂可以很好地控制被薄的油膜复盖的气泡的表面性质 ,以便获得所需求的选择性。油泡在矿物表面上的接触角比气泡在矿物表面上的接触角大得多 ,这样可以保证对细颗粒和粗颗粒具有较强的捕收能力。活性油泡可使进入水相中的捕收剂量最小 ,防止矿浆中存在的捕收剂、活化剂、抑制剂和分散剂之间的不希望的协同作用 ,因而使脉石矿物活化程度最小 ,大幅度降低捕收剂所需要的量。测定了水溶液中煤油滴的Zeta电位与pH的关系。结果表明 ,可以通过控制捕收剂的种类来使油滴的表面电荷和表面性质适于浮选需要。用接触角测定法研究了含有捕收剂的油泡在二氧化硅、闪锌矿和方铅矿表面上的固着。用微浮选试验证实了在优先浮选中应用活性油泡的可能性 A new concept of using reactive oil bubbles (ie, bubbles covered by a thin layer of oil containing a collector) has been proposed as a flotation carrier. In addition to the fine particle floccules, the oil film adds a water-soluble collector to the oil phase to provide good control over the surface properties of the bubble covered by the thin oil film in order to achieve the desired selectivity. The contact angle of the oil bubbles on the mineral surface is much larger than the contact angle of the gas bubbles on the mineral surface, thus ensuring a strong ability to capture fine and coarse particles. The reactive oil bubbles minimize the amount of collector that enters the aqueous phase, prevent unwanted synergy between the collectors, activators, inhibitors and dispersants present in the slurry, thereby minimizing gangue mineral activation, Dramatically reduce the amount of collector required. The relationship between Zeta potential and pH of kerosene droplets in aqueous solution was determined. The results show that the surface charge and surface properties of the oil droplets can be adapted to the flotation needs by controlling the type of collector. Contact angle determination was used to study the anchoring of collectors-containing oil bubbles on the surfaces of silica, sphalerite and galena. Micro-flotation tests confirmed the possibility of applying active oil bubbles in preferential flotation