Fabricated soils from South African fine coal discard
Coaltech | August 2023
R1500,00
Description
Fine coal waste has potential for both the recovery of a saleable fine coal fraction, by flotation or similar separation tool, and the re-purposing of the resultant bulk ash-rich fractions to soil fabrication. While, where these fractions are acid-generating, their preparation by two-stage flotation is preferred, in this project several fine coal waste fractions illustrated that they could be used directly in soil fabrication, improving the techno-economics.
Related Products
Characterization of Spontaneous Combustion Emissions
2005
Aircraft and ground monitoring at a working colliery in summer and winter, measuring trace gases and particulates from spontaneous combustion, for air quality management and mine planning.
What this report foundAircraft and ground based measurements at Kleinkopje Colliery showed spontaneous combustion to be a significant source of fine particles, with PM2.5...
R1500,00
Aircraft and ground based measurements at Kleinkopje Colliery showed spontaneous combustion to be a significant source of fine particles, with PM2.5 concentrations 91 per cent higher inside a combustion plume than outside it. Sulphur dioxide, nitrogen dioxide and carbon dioxide were also raised in plume, and benzene and toluene were detected. Average particle size was below one micron.
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.
A diatom based index for pans impacted by acid mine drainage
2021
Wet and dry season sampling of epiphytic diatoms from reed, salt and grass pans on the Mpumalanga Highveld, validating a biomonitoring index for mine affected depressional wetlands.
What this report foundLevel of acid mine drainage disturbance explained more of the variation in diatom communities than any other factor, with pan type second and season not...
R1500,00
Level of acid mine drainage disturbance explained more of the variation in diatom communities than any other factor, with pan type second and season not significant. Sulphate and calcium concentrations and sulphate to chloride ratios were higher in disturbed pans of every type. Pan type specific indices were tested against established riverine indices.
Hydrothermal Treatment of Coal Discards and Sewage Sludge for the Production of Advanced Materials
2023
Laboratory carbonisation tests on discard and slurry samples blended with sewage sludge, with the resulting chars tested as adsorbents for dissolved pharmaceuticals. For waste and water treatment planners.
What this report foundCo-treating coal discards with sewage sludge by hydrothermal carbonisation gave hydrochars with better physicochemical properties than treating either waste...
R1500,00
Co-treating coal discards with sewage sludge by hydrothermal carbonisation gave hydrochars with better physicochemical properties than treating either waste alone. The blended hydrochar reached a surface area of 20.35 m2/g and a pore volume of 0.38 cm3/g, and removed 97.19% of nevirapine and 93.32% of lamivudine from recycled water. Routes to activated carbon and hydrogen storage were also assessed.