EFFECT OF KNELSON CONCENTRATOR OPERATION PARAMETERS ON COAL DESULFURIZATION AND DEASHING

The Knelson Concentrator, developed especially for finer-sized gold recovery, has recently been used to enrich many ores. The Knelson concentrator is a device that separates by utilizing centrifugal force and density. In this study, a Knelson Concentrator was used to remove sulfur and ash forming mineral matter in coal, which is very fine in size and causes environmental problems. The effects of Knelson Concentrator operating parameters (centrifugal force, water flow and grain size) on inorganic sulfur and ash removal were investigated. Both inorganic sulfur and ash were determined to be effective in removing. % 7.06 total sulfur containing coal (3.55% inorganic sulfur), sulphurane 15.02% and ash 19.45% were removed 58.16% with combustible yields (90 G centrifugal force, 1.6 lt/min water flow and 0.150 mm particle size)