Coaltech Research Association

Low-smoke Fuels: Test Work on Devolatilised Binderless Coal Briquettes

SJ Mangena

Description

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Soil Rehabilitation: Can Dung Beetles Improve Post-mining Land-use Options?

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Final report of a three year study on rehabilitated South African coal mine soils, testing an invertebrate based addition to conventional rehabilitation, for environmental managers and land use planners.

What this report foundAnts, termites, dung beetles and earthworms are known to improve soil health, but none had been deliberately applied as part of a mine reclamation strategy.

Cost Evaluation of Different Medium Solids for Air Dense Medium Fluidized Bed Coal Separation

Kundayi Marshall Chagwedera

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University laboratory work on air fluidised bed separation, testing pyrrhotite, blast furnace slag, silica sand and coal discards against magnetite, for engineers considering waterless coal washing.

What this report foundMagnetite and pyrrhotite each gave the most uniform and stable fluidised bed densities, with bed density variation under 0.7 per cent.

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