Browsing Theses and Dissertations (Materials Science and Metallurgical Engineering) by Type "Thesis"
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Browsing Theses and Dissertations (Materials Science and Metallurgical Engineering) by Type "Thesis"
Now showing items 1-20 of 41
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(University of Pretoria, 2017)The ballistic performance was investigated with rigorous testing of the new armor steel alloy, a tempered variant and a benchmark material. Mechanical testing included Hopkinson pressure bar tests, high temperature, notched ...
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(University of Pretoria, 2014)The aim of the study presented here was to investigate the potential for chemical wear of carbon-based refractory materials in a silicomanganese furnace tap-hole. In the study, three research questions were addressed: 1. ...
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(University of Pretoria, 2007-10-18)In South Africa, the ferrochromium industry produces approximately 100,000 t bag house filter dust and slurry, while the stainless steel industry produces 24,000 t of dust annually [17,39]. The toxic substances in these ...
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(University of Pretoria, 2010-11-11)The fundamental cause of low temperature breakdown (reduction disintegration) is reduction of hematite to magnetite, resulting in a volume expansion and stress relief through the formation of cracks. Serious reduction ...
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(University of Pretoria, 1991)A plug-type oxygen probe containing a magnesia stabilized solid zirconia electrolyte rod, was developed. This oxygen sensor was evaluated in the Fe-Cr-0 system at 1873 K by determining the Raoultian chromium and Henrian ...
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(University of Pretoria, 2017)It is widely known that the addition of vanadium carbide to tungsten carbide significantly enhances the performance of the tungsten carbide tool by improving the hardness as well as the abrasion resistance of the material. ...
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(University of Pretoria, 2008-05-06)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2018)Industrial electrowinning of nickel requires specific control and optimisation of the electrolyte composition, the presence of impurities, the addition of additives (to achieve particular deposit properties) and the operating ...
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(University of Pretoria, 2024-07-04)The aim of this study was to determine the critical properties that a binder for use in taphole clay should have, identify alternative non-toxic binders that could potentially replace the currently used toxic high-temperature ...
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(University of Pretoria, 2006-10-13)Previous mineralogical investigations (QemSCAN) performed on all effluent flotation streams of Mimosa mine (Zimbabwe) indicated the presence of appreciable amounts of platinum group minerals (PGMs), which are not recovered. ...
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(University of Pretoria, 2023-07-27)Incorporating multi-component, multi-phase, high-temperature, complex chemical equilibrium calculations into multiphysics and process models can provide valuable insights into industrial processes and equipment that current ...
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(University of Pretoria, 2008-11-13)Wide cracks in land-based Ni- or Co-base superalloy turbine components are difficult to repair successfully using conventional welding or brazing techniques. This project examined the feasibility of liquid phase diffusion ...
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(University of Pretoria, 2014)Although the austenitic stainless steels 304 and 321 are often treated nominally as equivalents in their hot rolling characteristics, the question remains whether any subtle differences between the two allow further ...
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(University of Pretoria, 2012)High temperature gas cooled nuclear reactors often make use of Tristructural Isotropic (TRISO) coated fuel particles. In these particles, a layer of silicon carbide plays the key role of providing mechanical strength and ...
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(University of Pretoria, 2019)The upper-sidewall of a typical PGM smelter is lined with synthetic graphite at the hot-face. Copper waffle coolers located behind the graphite extract the heat away from the refractory. The sufficient cooling provided by ...
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(University of Pretoria, 2004)This study focused on the dynamic behaviour of the freeze lining and slag bath, and the interactions between these components in an ilmenite-smelting furnace process. The purpose of the work was to gain a better understanding ...
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Investigation into froth flotation for the beneficiation of printed circuit board comminution fines (University of Pretoria, 2010-06-14)In resource recovery from end-of-life printed circuit board (PCB), the physical processing route is considered most environmentally friendly. The −75 µm fraction generated during the comminution assays well above many ...
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(University of Pretoria, 2009-08-12)Titania slag is a feedstock to the pigment industry, which in turn provides titania pigment to producers of everyday products like paper, cosmetics and toothpaste. Titania slag is the primary product of the pyrometallurgical ...
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(University of Pretoria, 2006)The aim of this study was to arrive at a fundamental understanding of kimberlite weathering and of factors which affect the rate and extent of weathering. Weathering was evaluated by measuring the change in size distribution ...
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(University of Pretoria, 2010-06-14)The effect of Laves phase (Fe2Nb) formation on the Charpy impact toughness of the ferritic stainless steel type AISI 441 was investigated. The steel exhibits good toughness after solution treatment at 850°C, but above and ...
Now showing items 1-20 of 41