Dense-medium Fine Coal Processing: Tests Conducted at South Witbank Coal Mine
200319 pages
Pilot scale dense medium testing on fine coal at a Witbank colliery after the plant was moved from an earlier site, with sampling, efficiency and magnetite results for plant designers.
The fine coal dense medium pilot plant was rebuilt at South Witbank Coal Mine and run on fine coal, with tests covering single, double and three stage processing, the effect of recirculating load, magnetite size and losses, separation efficiency and continuous operation. The fast screen could not deliver the required capacity and was replaced by dewatering cyclones to deslime the feed.
Contents
- Introduction4
- Early results at South Witbank5
- Number of processing stages and the influence of recirculating load5
- Problems experienced14
- Sampling14
- Analysis of samples14
- Magnetite14
- Efficiency tests15
- Float-and-sink analysis18
- Continuous operation18
How it opens
The Coaltech 2020 fine coal dense-medium pilot plant was taken out of commission at Koornfontein Colliery on Friday, 7 June 2002. This was done to enable the plant to be dismantled and moved to South Witbank Coal Mine (SWC) where it was to be tested on fine coal from the No. 4 Seam. The plant was re-commissioned at SWC on 18 September 2002.
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Description
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