Coaltech Research Association

Best Practice Guidelines for the Management of Spontaneous Combustion in Opencast Coal

G Stenzel

Guidelines drawn from site testing at opencast coal operations, including trials of gypsum and fly ash sprays applied with a hydro seeder. For pit supervisors and mine safety staff.


By Gerhard Johann Stenzel | 2024

What this report found

Practical guidance for opencast operations covers early detection with low cost thermal cameras, prevention, and the treatment methods in current use: water sprays and cannons, sand cladding of highwalls and stockpiles, removal of burning coal by dragline, tipping into water ponds and the treatment of sinkhole areas. A three month full scale trial of sprayed fly ash as an antioxidant is reported.

R1500,00

Description

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R1500,00

Assessing the Ecosystem Processes of Ecological Infrastructure on Post-coal Mined Land

2017

Physical, chemical and biological sampling at two points on each of four Mpumalanga watercourses, with wetland functionality assessment and mitigation recommendations, for mine environmental and water managers.

What this report foundWatercourses on post mined land near Kriel showed deterioration in manganese, calcium, magnesium, sodium, total dissolved salts and sulphate, while other...

R1500,00

R1500,00

What this report found

Watercourses on post mined land near Kriel showed deterioration in manganese, calcium, magnesium, sodium, total dissolved salts and sulphate, while other parameters stayed within drinking water standards. Aquatic invertebrate communities had suffered significant losses and two sites were classified as eutrophic. The water is not fit for human consumption or recreation, and a minimum 32 m buffer from wetland boundaries is recommended after earthworks.

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

GJ de Korte

2003

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...

R1500,00

R1500,00

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.

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