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Thermomechanical analysis of raw materials used in the production of Soderberg electrode paste
(North-West University, 2011)
Applications of chromium vary widely (refractories, chemicals and metallurgical); however, the greatest benefit of chromium is its ability to improve the corrosion resistance, strength and hardness of steel. South Africa ...
Product evaluation and reaction modelling for the devolatilization of large coal particles
(North-West University, 2012)
A fundamental understanding of the process of devolatilization requires extensive knowledge of not only the intrinsic properties of the parent coal and its subsequent formed products (tars,
gases and chars), but also its ...
Catalytic steam gasification of large coal particles
(North-West University, 2011)
Catalytic gasification has been studied extensively in order to develop more efficient and economic coal conversion processes. Fundamental studies regarding catalytic gasification have thus far focused on experimentation ...
The influence of minerals content and petrographic composition on the gasification of inertinite rich high ash coal
(North-West University, 2010)
Coal particles with different densities have different mineral and maceral compositions and this affects the gasification reaction rates, especially in coals with high ash contents. This study involved the characterization ...
The influence of particle size and density on the combustion of Highveld coal
(2011)
Coal from the Highveld seam 4 deposit was studied to determine and understand the influence of density and particle size on the high temperature combustion characteristics. All of the charring, as well as the combustion ...
Reaction kinetics of the iron-catalysed decomposition of SO3
(2014)
In this study the performance of pure, very fine iron (III) oxide powder was investigated as catalyst for the decomposition of sulphur trioxide into sulphur dioxide and oxygen. This highly endothermic reaction requires a ...
Gasification and combustion kinetics of typical South African coal chars
(2015)
An investigation was undertaken to compare the kinetics of combustion and gasification reactions of chars prepared from two South African coals in different reaction atmospheres: air, steam, and carbon dioxide. The two ...
The effect of mineral addition on the pyrolysis products derived from typical Highveld coal
(2014)
Mineral matter affect various coal properties as well as the yield and composition of products released during thermal processes. This necessitates investigation of the effect of the inherent minerals on the products derived ...
Implementation of membrane technology in a base metal refinery
(2013)
In this study, the implementation of membrane technology at Anglo Platinum’s base metals refinery to separate acid from metal containing solutions was investigated. The refinery includes a circuit known as the “sulphur ...
The influence of particle size and devolatilisation conditions on the CO2 gasification of Highveld coal
(North-West University, 2011)
The influence of particle size and devolatilisation conditions on the CO2 reactivity of Highveld seam 4 run of mine coal were investigated in a large particle thermo–gravimetric system. Particle sizes of 5 mm, 10 mm, 20 ...