Determination of the Important Operating Variables On Cleaning Fine Coal by Knelson Concentrator and Evaluation Of The Performance Through Upgrading Curves

Progress in The Application of Centrifugal Resorice Technology in The Field of Minerals

“…In addition, Filiz Oruç [17] used several groups of test data and Minitab 15 mathematical software package to deduce the mathematical model equations of clean coal ash content and recovery rate. It is concluded that under the optimized condition, the Falcon separator can produce clean coal with ash content of 36% from raw coal with ash content of 66%.Ozcan Oney [18] studied the beneficiation process of fine coal powder by Nelson concentrator.The effects of these variables on recovery of concentrate ash content and recovery of fuel were studied by central combination design.Quadratic regression models with estimated coefficients are developed to assess responses, and 3D plots are proposed to assess the interaction between independent variables and responses. The upgrading curve is used to evaluate the optimization results.Through the comparison of upgrade curves, it is proved that the purification effect of Nelson separator on fine coal is better, and the appropriate operation parameters will obtain a certain expected recovery rate.On the basis of the physical analysis of the separation principle of Falken centrifuge separator, Jean-Sébastien Kroll-Rabotin [19] established the prediction model of Falken centrifuge separator, using polynomial continuous function to represent the particle size and density distribution.Making the model directly usable without the need to know the numerical methods behind it, and allowing the reconstruction of missing information.…”