Coaltech Research Association

A Provisional Basinal Study of the Waterberg-karoo, South Africa

R1500,00

Description

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Dense-medium Fine Coal Processing: Tests Conducted at South Witbank Coal Mine

GJ de Korte

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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.

What this report foundThe 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...

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GJ de Korte

200319 pages

What this report found

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.

Geotechnical Factors Associated With Previously Mined Areas of Coal and Their Impact on Subsequent Extraction

Lesley Sharon Jeffrey

2002

Masters research on pillar extraction in the Witbank Coalfield, ranking the ground conditions that decide method choice and safety, for rock engineers and mine planners.

What this report foundGeotechnical factors affecting secondary extraction were identified from interviews with collieries already re-mining pillars and with people experienced in...

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Lesley Sharon Jeffrey

What this report found

Geotechnical factors affecting secondary extraction were identified from interviews with collieries already re-mining pillars and with people experienced in stooping, then quantified and ranked against the different aspects of the work. No single factor governs the outcome. Factors interact, so choosing a method and working safely in old workings depends on managing them together across disciplines.

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