Performance optimization of the Imhoflot G-Cell for fine coal cleaning

G-Cell is a new design modification of the Imhoflot pneumatic flotation technology, which utilizes a self-inducing aerator inside a downcomer, where bubble-particle attachment takes place. The flotation slurry containing the particle-bubble aggregates are introduced tangentially to a cylindro-conical separation vessel through multiple inlets. The high tangential velocity along with the limited capacity of the froth-separating vessel results in an increased kinetics of separation. In addition, the resulting centrifugal field in the separation vessel tends to provide a congenial environment to reject the high-density solid particles, for example, coal pyrite particles in the feed, to the tailings stream.