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
Hydrothermal Treatment of Coal Discards and Sewage Sludge for the Production of Advanced Materials
2023
Laboratory carbonisation tests on discard and slurry samples blended with sewage sludge, with the resulting chars tested as adsorbents for dissolved pharmaceuticals. For waste and water treatment planners.
What this report foundCo-treating coal discards with sewage sludge by hydrothermal carbonisation gave hydrochars with better physicochemical properties than treating either waste...
R1500,00
Co-treating coal discards with sewage sludge by hydrothermal carbonisation gave hydrochars with better physicochemical properties than treating either waste alone. The blended hydrochar reached a surface area of 20.35 m2/g and a pore volume of 0.38 cm3/g, and removed 97.19% of nevirapine and 93.32% of lamivudine from recycled water. Routes to activated carbon and hydrogen storage were also assessed.
Causes, Symptoms, Prevention and Alleviation of Soil Compaction on Mined Land
2006
A review of South African opencast coal experience, written for environmental officers and mine management who must correct legacy compaction and plan operations that avoid creating more.
What this report foundCompaction on rehabilitated opencast land restricts effective rooting depth so severely that only a small proportion of arable and grazing areas reach their...
R1500,00
Compaction on rehabilitated opencast land restricts effective rooting depth so severely that only a small proportion of arable and grazing areas reach their stated capability. The review sets out the causes and symptoms, argues that symptoms are usually treated without addressing the cause, and recommends site specific, resource based management, mechanisation choices weighed against compaction, and land capability standards aligned with international codes.