Fine Coal Dense-medium Cyclone Tests Conducted at Leeuwpan Coal Mine
200720 pages
Pilot dense medium cyclone testing on fine coal inside a working spiral plant at a Mpumalanga opencast mine, ending in a full scale plant design.
by GJ de Korte | January 2007
Dense medium cyclones on the fine coal fraction lifted product yield well above the spiral circuit they were compared against and gave closer control of product quality. Cut point density control proved the hardest part of running the plant, medium properties being critical. Magnetic separator capacity had to match the duty, and a basement was needed to contain and recover medium spillage.
Contents
- 1. Introduction3
- 2. Coal quality4
- 3. Spiral Circuit5
- 4. Sampling5
- 5. Spiral and dense-medium cyclone compared6
- 6. Demagnetizing coil10
- 7. Grootegeluk test11
- 8. JK Cyclone Test13
- 9. Extended runs17
- Magnetic separator efficiency18
How it opens
Upon completion of the test work at Navigation, the Coaltech 2020 fine coal dense-medium plant was re-located to Leeuwpan Mine for the next phase of test work. The move of the plant was initially planned for the last quarter of 2005 but was delayed as a result of the commissioning of the new jig plant at Leeuwpan. The plant was transported to Leeuwpan during January 2006.
How it concludes
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