Opencast mine rehabilitation with biomix
J. Human | April 2021
R1500,00
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Cost Evaluation of Different Medium Solids for Air Dense Medium Fluidized Bed Coal Separation
2017
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.
R1500,00
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.
Development of a Horizontal Winnower for the Beneficiation of Fine Coal
Proof of concept work on dry beneficiation of minus 6 mm coal, combining airflow modelling and simulation with a laboratory winnowing box, for plants short of process water.
What this report foundHorizontal air winnowing separated fine coal by particle size and density in laboratory experiments, supported by equation of motion modelling and...
R1500,00
Horizontal air winnowing separated fine coal by particle size and density in laboratory experiments, supported by equation of motion modelling and computational fluid dynamics. Modelling indicated that a chamber 0.6 m high and 1 m long is sufficient to displace any minus 6 mm particle at air velocities of 10 to 30 m/s.