Abstract
The secondary circulation in a spiral concentrator had been explained in an earlier publication with the help of classical solid mechanics. In the present paper, classical solid mechanics has again been applied to develop simplified flow equations for fluid and slurry systems specific to the spiral concentrator. A new concept of composite coefficient of friction has been introduced for the slurry system, which considers the solids concentration and friction between layers of water. The flow equation can predict flow velocity with the number of turns and radial distance in spiral concentrators. Simulation studies on the proposed acceleration and velocity equations have been performed, which align with the general fluid flow behavior observed in spiral concentrators. A comparison of the velocities calculated with the proposed equation has been drawn with the corrected plot of equilibrium velocity, which further supports the presented equations.
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