Browsing Faculty of Natural and Agricultural Sciences by Subject "Mineral matter"
Now showing items 1-4 of 4
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Determination of mineral matter and elemental composition of individual macerals in coals from Highveld mines
(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 added minerals on the pyrolysis products derived from a vitrinite-rich demineralised South African coal
(Elsevier, 2016)A better understanding of the behaviour of the inorganic matter present in coal will assist in more cost-effective operations and more consistency in product yield and composition during thermal processing. In this study, ... -
Evaluation of mineral matter transformations in low-temperature ashes of South African coal feedstock samples and their density separated cuts using high-temperature X-ray diffraction
(Taylor & Francis, 2020)Coal mineral matter is the leading cause of inevitable ash problems (fouling and slagging) during the combustion of coal. Low-temperature ash (LTA) samples of feed coals and the density separated fractions were subjected ... -
Mineralogical, chemical, and petrographic properties of selected South African power stations’ feed coals and their corresponding density separated fractions using float-sink and reflux classification methods
(Taylor & Francis, 2019)Three South African feed coal samples for the combustion process were beneficiated to produce carbon-rich and mineral-rich fractions. The mineralogical, petrographical, and chemical properties of these feed coals and ...