Coal Mine Acid Mine Drainage Treatment and Sludge Processing
Laboratory evaluation of acid drainage treatment paired with thermal recovery of reagents from the resulting sludge, with capital and operating cost estimates for mine water planners.
by JN Zvimba; J Mulopo, SR Motaung, JP Maree, M de Beer & TL Bolog | March 2010
A modified alkaline barium calcium process was tested on coal mine acid drainage, using calcium hydroxide neutralisation, hydrogen sulphide metal removal and barium carbonate sulphate removal. Gypsum formation during water treatment fell by 80 per cent, cutting the sludge sent to costly downstream processing to a fifth. Temperature, reaction time, reagent ratios and feed particle size affected thermal treatment of the sludge.
R1500,00
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Evaluation of Ground Geophysical Techniques on the Waterberg Coal Fields
2008
Interim account of trial ground surveys along a profile in the Waterberg coalfield, for exploration geologists weighing survey cost against the structural detail mine planning needs.
What this report foundElectrical and electromagnetic ground surveys were run over a Waterberg profile with borehole logs and three dimensional seismic data as control, to test...
R1500,00
Electrical and electromagnetic ground surveys were run over a Waterberg profile with borehole logs and three dimensional seismic data as control, to test whether cheaper methods can match seismic reflection for locating coal and faults. Resistivity tomography at two electrode spacings, frequency and time domain electromagnetics, controlled source audio magnetotellurics and magnetics were all acquired. Results are preliminary.