The Use of Density Tracers for the Determination of Dense Medium Cyclone Partition Characteristics

The density tracer technique has for some years been utilised for determination of the separation efficiencies of density separators in the diamond and iron ore industries. At the Julius Kruttschnitt Mineral Research Centre (JKMRC), the technique has been adapted for studies of coal separation, and refined to a point where a Tromp or partition curve for a dense medium cyclone module can be determined quickly and accurately. Test programs using 33 mm tracers in seven Australian coal washeries are reported, and the effects of selected operating variables on separator performances are examined. The density tracer technique is shown to have substantial potential in improvement of day to day washery operation and the detection of unusual operating conditions, and in coal preparation research