Search Results - "Kruger, Richard A."

Characterisation of the Hydration Products of a Chemically and Mechanically Activated High Coal Fly Ash Hybrid Cement by Grizelda du Toit, Elizabet M. van der Merwe, Richard A. Kruger, James M. McDonald, Elsabé P. Kearsley

“…Cement companies are significant contributors of the planet’s anthropogenic CO2 emissions. With increased awareness of the substantial volume of CO2 emissions…”
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Ammonium sulphate and/or ammonium bisulphate as extracting agents for the recovery of aluminium from ultrafine coal fly ash by van der Merwe, Elizabet M., Gray, Clarissa L., Castleman, Barbara A., Mohamed, Sameera, Kruger, Richard A., Doucet, Frédéric J.

“…We recently showed that the selective extraction of aluminium from the amorphous phase of a South African ultrafine coal fly ash can be achieved via…”
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Preparation of Sodium Silicate Solutions and Silica Nanoparticles from South African Coal Fly Ash by Aphane, Mathibela E., Doucet, Frédéric J., Kruger, Richard A., Petrik, Leslie, van der Merwe, Elizabet M.

“…The production of amorphous mesoporous silica nanoparticles can be achieved using sodium silicate (Na 2 SiO 3 ) solutions prepared from South African coal fly…”
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Physical, chemical and mineralogical characterisation of hydraulically disposed fine coal ash from SASOL Synfuels by Mahlaba, Jabulani S., Kearsley, Elsabé P., Kruger, Richard A.

“…► This study reports on the weathering of a fine ash dam formed by a slurry disposal of coal fine ash with desalination brines. ► State-of-the-art equipment…”
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Effect of fly ash characteristics on the behaviour of pastes prepared under varied brine conditions by Mahlaba, Jabulani S., Kearsley, Elsabé P., Kruger, Richard A.

“…Illustration of workable fly ash paste having used brine as mixing water. [Display omitted] ► We present results of a novel application aimed at minimising the…”
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Fly ash beneficiation in South Africa: creating new opportunities in the market-place by Kruger, Richard A.

“…The ways in which air classification, electrostatic recovery and density separation can be used to obtain specific fractions of fly ash with different…”
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Evaluation of workability and strength development of fly ash pastes prepared with industrial brines rich in SO 4 = and Cl − to expand brine utilisation by Mahlaba, Jabulani S., Kearsley, Elsabé P., Kruger, Richard A., Pretorius, P.C.

“…Illustration of workability of pastes as a function of brine chemistry and determination of compressive strength of cured paste. [Display omitted] ► The…”
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Evaluation of workability and strength development of fly ash pastes prepared with industrial brines rich in [inline image][inline image] and Cl super(- to expand brine utilisation) by Mahlaba, Jabulani S, Kearsley, Elsabe P, Kruger, Richard A, Pretorius, P C

“…Anthropogenic pollution is an unavoidable consequence of both producing energy from coal and desalination of water. Coal ash and brines are partially utilised…”
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Evaluation of workability and strength development of fly ash pastes prepared with industrial brines rich in and Cl− to expand brine utilisation by Mahlaba, Jabulani S., Kearsley, Elsabé P., Kruger, Richard A., Pretorius, P.C.

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