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运用回收率和细粒锡石-气泡间的碰撞机制研究颗粒-气泡间的相互作用。用单泡浮选管进行浮选实验,考查不同条件下细粒锡石的浮选行为。结果表明,浮选回收率受颗粒和气泡尺寸的影响很大,在浮选回收率最高时,颗粒和气泡间存在一个最佳的匹配范围。运用高速摄影仪观察并捕捉颗粒-气泡间的碰撞、粘附、脱附过程,在已有理论的基础上,分析颗粒-气泡间的碰撞-粘附现象并解释浮选实验结果,通过捕捉图片证明颗粒-气泡间的粘附模型,发现颗粒-气泡间的桥连作用。锡石、气泡尺寸的大小影响锡石-气泡间的相互作用,这不仅影响锡石-气泡间的碰撞粘附行为,并最终影响细粒锡石的浮选回收率。
Study on Particle-Bubble Interactions by Recoveries and Crash Mechanism between Fine Cassiterite and Bubbles. Flotation experiments with a single bubble flotation tube to examine the flotation behavior of fine-grained cassiterite under different conditions. The results show that the recovery rate of flotation is greatly influenced by the size of the particles and the size of the bubbles. When the flotation recovery rate is the highest, there is an optimal matching range between the particles and the bubbles. Using the high-speed camera to observe and capture the particle-bubble collision, adhesion and desorption processes, based on the existing theory, the particle-bubble collision-adhesion phenomenon was analyzed and the flotation experiment results were explained. By capturing the images Prove the particle - bubble adhesion model, found that the particles - the bridge between the role of bubbles. Cassiterite and bubble size affect the cassiterite-bubble interaction, which not only affects the collision and adhesion between cassiterite and bubble, but also affects the flotation recovery of fine-grained cassiterite.