Search Results - "van Heerden, J.H.P."

Extraction of alumina from coal fly ash generated from a selected low rank bituminous South African coal by Matjie, R.H., Bunt, J.R., van Heerden, J.H.P.

“…Vast quantities of coal ash, originating from the steam generation coal-based process have accumulated over the years. Continuous research is conducted to…”
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CO2 storage potential of South African coals and gas entrapment enhancement due to igneous intrusions by SAGHAFI, A, PINETOWN, K. L, GROBLER, P. G, VAN HEERDEN, J. H. P

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Chemical fractionation tests on South African coal sources to obtain species-specific information on ash fusion temperatures (AFT) by van Dyk, J.C., Baxter, L.L., van Heerden, J.H.P., Coetzer, R.L.J.

“…Coals from the different sources used by Sasol vary substantially in terms of chemical and physical properties and directly relates to gasifier behavior. Due…”
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Characterization of unburned carbon present in coarse gasification ash by Wagner, N.J., Matjie, R.H., Slaghuis, J.H., van Heerden, J.H.P.

“…Depending on the mode of operation and quality of the feed material, discrete unburned carbon particles are evident in coarse gasification ash emanating from a…”
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CO 2 storage potential of South African coals and gas entrapment enhancement due to igneous intrusions by Saghafi, A., Pinetown, K.L., Grobler, P.G., van Heerden, J.H.P.

“…Methane outburst events have occurred in some underground coal mines of South Africa such as those in Twistdraai Mine in the Highveld Coalfield in the early…”
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Quantification of oxygen capture in mineral matter during gasification by van Dyk, J.C., Waanders, F.B., van Heerden, J.H.P.

“…It has been observed that during the transformation of minerals at higher temperatures (>1000 °C), mineral species are formed containing a high number of…”
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Die definiëring van persoonlike besparing: Die Suid-Afrikaanse situasie 1965.1 tot 1984.4 by P. Styger, J. H.P. Van Heerden

“…The definition of personal savings: The South African situation 1965.1 to 1984.4 The personal savings definition and through that also the time series of…”
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