TY - JOUR N2 - In this study, a three-level Box-Behnken design of experiments combined with response surface methodology used to investigate the effects of the feed density, feed pressure and vortex finder diameter on the separation results (ash content and yield of the overflow) of a water-only cyclone. The coal used in the study was supplied from Soma, Turkey and crushed to below 1 mm. Experiments were conducted using a watter-only cyclone (WOC) which was operated in a closed-circuit test rig, overflow and underflow streams were collected and were sieved through 0.1 mm to simulate dewatering screens.The actual data collected from the tests were used to construct the empirical models representing clean coal ash and yield as process responses to the independent variables. The significance test of model fit for clean coal ash and yield were performed using analysis of variance (ANOVA). The results showed that ash content and yield of the clean coal models were significant.The results showed that with an increase in vortex finder diameter (VFD), feed density (FD) and inlet pressure (IP), ash content and yield of the clean coal increases. The results suggested that all main parameters affected the ash content and yield of the clean coal to some degree. The significance order of the effect of the variables on the ash content and yield was found as FD > VFD > IP and VFD > IP > FD respectively. The results of the numerical optimization in the range of the experimental data showed that it is possible to reduce the ash content of clean coal from 42.21 to 18.89. L1 - http://journals.pan.pl/Content/124492/PDF/Cerik-Arslan.pdf L2 - http://journals.pan.pl/Content/124492 PY - 2022 IS - No 3 EP - 150 DO - 10.24425/gsm.2022.142787 KW - coal fines KW - water only cyclone KW - BBD-RSM KW - modelling A1 - Çerİk, Çağrı A1 - Arslan, Vedat PB - Komitet Zrównoważonej Gospodarki Surowcami Mineralnymi PAN PB - Instytut Gospodarki Surowcami Mineralnymi i Energią PAN VL - vol. 38 DA - 2022.09.29 T1 - The modelling of fine coal beneficiation with a water-only cyclone SP - 137 UR - http://journals.pan.pl/dlibra/publication/edition/124492 T2 - Gospodarka Surowcami Mineralnymi - Mineral Resources Management ER -