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.
R1500,00
Description
Related Products
Characterization of Spontaneous Combustion Emissions
2005
Aircraft and ground monitoring at a working colliery in summer and winter, measuring trace gases and particulates from spontaneous combustion, for air quality management and mine planning.
What this report foundAircraft and ground based measurements at Kleinkopje Colliery showed spontaneous combustion to be a significant source of fine particles, with PM2.5...
R1500,00
Aircraft and ground based measurements at Kleinkopje Colliery showed spontaneous combustion to be a significant source of fine particles, with PM2.5 concentrations 91 per cent higher inside a combustion plume than outside it. Sulphur dioxide, nitrogen dioxide and carbon dioxide were also raised in plume, and benzene and toluene were detected. Average particle size was below one micron.
Evaluation of Three Native Grass Species and a Tree Species for Coal Mine Rehabilitation
2009
Field trials established on prepared topsoil at three Mpumalanga Highveld collieries and measured to 2007, covering survival, cover, biomass and tree growth, for rehabilitation planners.
What this report foundCynodon dactylon outperformed Themeda triandra and Hyparrhenia hirta, reaching 100 per cent survival and cover at all three trial sites by 2007 with or without...
R1500,00
Cynodon dactylon outperformed Themeda triandra and Hyparrhenia hirta, reaching 100 per cent survival and cover at all three trial sites by 2007 with or without fertiliser. Acacia sieberana reached 97 per cent survival at Kleinkopje Colliery but grew poorly at Optimum and Syferfontein. Planting plugs suits slopes too steep for a planter machine and buffers against pasture grass intrusion.