Evaluation of the Optimal Parameters of the Coal Silt Enrichment Process on the Screw Like Separator

Abstract

The experimental results for establishing the optimal parameters of coal silt enrichment on an improved screw like separator is discussed. Controlling and disturbing impacts on the process have been established during the preceding research. Controlling impacts are the rotation frequency of the screw like separator motor and the vertical oscillation amplitude of the separator screw, i.e. vertically acting force; Disturbing impact is the density of coal silt to be enriched. The dependence of the controlled quantities – tailing quality (ash content) and output on controlling impacts has been established and corresponding graphs have been constructed. The dependence is nonlinear, with a distinct maximum. Based on the analysis, optimal variation margins of the rotation frequency and vertical oscillation of the central axle of the screw like separator have been established, within which we will obtain maximum ash content of the enrichment process tailings as well as maximum output of the tailings, and therefore the maximum quality of the concentrate. The connection density between the controlling and controlled parameters has been evaluated according to correlational ratio. The obtained results indicate the validity of the experimental results and the research.