Cost Evaluation of Different Medium Solids for Air Dense Medium Fluidized Bed Coal Separation
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.
Magnetite and pyrrhotite each gave the most uniform and stable fluidised bed densities, with bed density variation under 0.7 per cent. A pyrrhotite and magnetite blend at a weight ratio of 40:60 beat magnetite alone, producing a product of 14.50% ash and 27.30 MJ/kg from a feed of 39.27% ash and 18.76 MJ/kg.
R1500,00
Description
Related Products
Sustainability Beyond Mining: Transformations in Systems for Secondary Beneficiation
2012
Doctoral work on sustainability thinking in the mining sector, drawing on air quality and waste residue projects inside a multinational miner, for readers concerned with beneficiation of mine waste.
What this report foundSustainability in mining is still framed in neoclassical economic terms, measured by profit, shareholder value and growth, with social and environmental...
R1500,00
Sustainability in mining is still framed in neoclassical economic terms, measured by profit, shareholder value and growth, with social and environmental dimensions added in response to regulation. Six air quality and waste minimisation projects run over seven years were assessed against seven dimensions of the biosphere and fell well short. A collaborative model is proposed for a sector built on mining waste residues.
Zaalklapspruit Wetland Before and After Rehabilitation
2015
Field assessment of a wetland in the Mpumalanga coalfields, drawing on water chemistry and biological indicators, aimed at mining companies and licensing authorities.
What this report foundEcological integrity of a Mpumalanga wetland affected by coal mining was assessed before and after rehabilitation, using water quality, bacterial consortium...
R1500,00
Ecological integrity of a Mpumalanga wetland affected by coal mining was assessed before and after rehabilitation, using water quality, bacterial consortium, freshwater algae and vegetation indicators. The work sits within a wider programme to give the coal sector and regulators practical ways of limiting and mitigating mining impacts on wetlands.