Multi-flow Process And Separation Dynamics Of Flotation Column

The Cyclone-Static Microbubble Flotation Column (FCSMC) is widely used in coal, mineral separation, oily wastewater treatment and other fields. However, with the deepening of industrialization, the study on physical characteristics suitable for multi-flow column separation process needs to be strengthened further. For this, the three flow regimes integrated in the FCSMC were studied, respectively. Meanwhile, the three corresponding flotation processes were established. The internal energy feature of flotation process was evaluated by turbulent kinetic energy and turbulent dissipation rate. The bubble viewer with the high-speed camera as the core was set up, and the effect of turbulent dissipation rate on bubble size was stuided. By the EDLVO theory, the relationship between the total interaction potential energy and operating range was analysed. Based on flotation kinetic theory, the probabilities of collision, attachment, detachment and acquisition between particle and bubble were also calculated. The results showed that with the flotability gradually becoming worse, the energy required by per combustible product increased. The coal properties suitable for different flow fields were revealed. Comparising the recovery capacities of the three mineralization ways on the same particle size, the recycling capacities of countercurrent, cyclone and pipe flow were stronger on coarse, intermediate and fine particles, respectively.