TESKA Separators are used for processing coal and ores. Dense-media separation is performed in a suspension of finely ground solids and water. In a slurry of that type particles of high specific gravity settle at the bottom while particles of lower specific gravity, such as coal, float. The TESKA separator is a slowly rotating bucket wheel which has been joined to the separating compartment by seals. The bucket wheel for sinks has been partitioned into compartments by means of perforated plates which enable removal of the sinks. The floats run towards a discharge paddle wheel.