Author:Kalenda, TN; North, Brian C; Naude, NDate:Jul 2019Published work on dry dense medium fluidized beds has mainly used magnetite and fine coal to make up the dense medium. Magnetite is used to achieve the required cut densities, but its recovery and reuse are problematic because it attaches to ...Read more
Author:De Korte, GJDate:Oct 2012Dense medium cyclones have been used for many years in a number of countries to beneficiate fine coal. The use of cyclones in this application is, however, not widespread and at present, the process is in use only in South Africa and China. ...Read more
Author:Van der Walt, PJDate:1950Although the union of South Africa possesses reasonably large reserves of coal of various qualities, the reserves of coking coal are comparatively small and are being exhausted at an alarming rate. The proven reserves of coking coal are ...Read more