Abstract:Due to the fact that coarse particle flotation is currently a key and difficult point in the field of mineral separation, it can not only effectively expand the upper limit of flotation particle size, but also save energy consumption in crushing and grinding. The development of efficient coarse particle flotation equipment is crucial. Therefore, this article studied the coarse-grained flotation machine from two aspects: computational fluid dynamics and flotation experiments. The results of computational fluid dynamics research indicate that the coarse particle flotation machine can enhance the drag force of coarse particles during the flotation process by increasing the turbulence intensity in the mixing zone. The single mineral test results indicate that coarse particle flotation can achieve the recovery of coarse mineral flotation at a lower dosage of reagents. Computational fluid dynamics and single mineral test results show that the coarse particle flotation machine with a short transport area can effectively promoting the recovery of coarse particle minerals.These findings have important implications for further understanding characteristics of internal flow field in coarse flotation machine and designing new efficient equipment for coarse particle mineral processing.