Predicting the Environmental Impact and Sustainability of Irrigation With Coal Mine Water
Commercial scale field trials and modelling of centre pivot irrigation with gypsiferous and sodium sulphate mine water, covering crop, soil and aquifer effects for mines and regulators.
by J.G. Annandale, Y.G. Beletse, P.C. de Jager, N.Z Jovanovic & J.M. Steyn – University of Pretoria, N. Benadé – NB Systems, S.A. Lorentz – University of Kwazulu Natal, F.D.I. Hodgson, B. Usher, D. Vermeulen – Institute for Groundwater Studies (University of the Free State), M.E. Aken – Anglo Coal Environmental Services | July 2006
Irrigation with calcium and sulphate rich mine water proved feasible and sustainable over eight years at a Mpumalanga colliery, with no significant impact on soil, surface water or groundwater. Sugarbeans, wheat, maize, potatoes and pastures were grown on a commercial scale. High calcium and magnesium suppressed potassium uptake, and waterlogging from poor site selection was the main problem.
R1500,00
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Coal Washability Using Coal Petrography
2019
Summary of postgraduate work validating washability prediction for southern African coals by image analysis and tomography, written for geologists, metallurgists and mining engineers valuing a deposit.
What this report foundA single float sink test destroys the sample and gives one deterministic answer, so it cannot show how washability changes with particle size distribution.
R1500,00
A single float sink test destroys the sample and gives one deterministic answer, so it cannot show how washability changes with particle size distribution. Simulating washability from petrographic images and tomography allows many size distributions to be tested statistically from one sample. Running simulation alongside float sink work during exploration lets the prediction error of each be compared.