Browsing Research Output by Author "110b401a-57f3-46a0-bb80-ede9f10fbbaf"
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Determination of mineral matter and elemental composition of individual macerals in coals from Highveld mines
Matjie, R.H.; Bunt, J.R.; Strydom, C.A.; Li, Z.; Ward, C.R. (SAIMM, 2016)A number of conventional and advanced analytical techniques (proximate and ultimate analysis, low-temperature oxygen-plasma ashing, X-ray diffraction, X-ray fluorescence spectrometry, coal petrography, and light-element ... -
The effect of the roof and floor geological structures on the mineralogical composition of ash produced from coal at UCG operating temperatures
Van Dyk, J.C.; Uwaoma, R.C.; Strydom, C.A.; Matjie, R.H.; Bunt, J.R. (International Pittsburgh Coal Conference, 2017) -
Pyrolysis of tetralin liquefaction derived residues from lighter density fractions of waste coals taken from waste coal disposal sites in South Africa
Uwaoma, R.C.; Strydom, C.A.; Matjie, R.H.; Bunt, J.R.; Okolo, G.N. (ACS, 2019)The lighter density (<1.5 g/cm3) fractions produced from two waste coals sampled from the waste coal disposal sites at thermochemical plants situated in South Africa were used as feed materials for liquefaction with tetralin. ... -
Reactivity of Fe salts in the destabilization of acid mine drainage employing mixing and shaking techniques without pH adjustment
Ntwampe, I.O.; Waanders, F.B.; Bunt, J.R. (Elsevier, 2016)Ferric chloride and Fe-sulphates are commonly Fe-salts used in water treatment, and the iron ionizes to form Fe3 + or Fe2 + when reduction occurs. A volume of 200 mL acid mine drainage (AMD) sample was poured into five 500 ...