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Theses and Dissertations (Materials Science and Metallurgical Engineering): Recent submissions
Now showing items 1-20 of 163
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(University of Pretoria, 2024-03-11)The purpose of this study was to compare the Denver and Leeds laboratory flotation cells by evaluating their performance in the flotation of quartz of four sizes (−25 μm, +25–45 μm, +45–75 μm, and +75–106 μm). This study ...
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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, 2024-05-17)The steel market increasingly demands higher strength thinner products with reduced weight and decreased cost, in particular galvanised products for the roofing, automotive and solar industries, which are in high demand. ...
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(University of Pretoria, 2020-04)Slurry wear is a common problem in the minerals processing industry. Hydrocyclones are widely used in wet mineral classification applications and can be notoriously prone to wear. This study investigated wear in hydrocyclones, ...
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(University of Pretoria, 2020-08)Ferrovanadium can be produced in a DC arc furnace by reducing V2O3 by means of an aluminothermic reaction. Vanadium recovery is decreased by the formation of vanadium oxides within the slag, along with ferrovanadium droplet ...
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(University of Pretoria, 2023-09-25)Maintenance due to the replacement of damaged wheels and rails as a result of wear and rolling contact fatigue (RCF) has been found to be the major problem to rail operating companies. This problem tends to lead to poor ...
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(University of Pretoria, 2022)Manganese is an important raw material in many industries, such as the steel, non-ferrous and battery industries. Manganese ores are typically mined and are then fed to submerged arc furnaces where a manganese ferroalloy, ...
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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, 2021)A low-cost titanium production process, the CSIR-Ti powder process, which aims to produce titanium powder directly by metallothermic reduction of titanium tetrachloride with lithium, has been under development at the ...
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(University of Pretoria, 2021)Additive manufacturing can be used to produce complex, custom geometries, consolidating different parts into one. This reduces the required number of assemblies and allows distributed manufacturing with short lead times. ...
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(University of Pretoria, 2020)Among many shape memory alloys, Ti-Pt alloys have potential as a high temperature shape memory alloy. The alloy undergoes a reversible martensitic transformation at temperatures above 1000 oC. However, the alloy’s negligible ...
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(University of Pretoria, 2020)Surface transverse cracking is still one of the main problems in the continuous casting of steel. The cooling rate at the corners of the slab and strand is usually the highest. Therefore, depending on the cooling regime, ...
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Investigating the Effect of Adding a Disc Liner to the Mill Shell of a Vertical Stirred Media Mill (University of Pretoria, 2020)Comminution processes are used in the metallurgical industry to reduce the particle size of mined ores in order to liberate valuable minerals for downstream separation and extraction. Comminution is a very energy intensive ...
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(University of Pretoria, 2019)Ferritic stainless steel is typically used in the automotive industry to fabricate welded tube that is plastically deformed for flanging, bending and necking. The effect of welding parameters during autogenous gastungsten arc ...
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(University of Pretoria, 2019)Laser-powder bed fusion (L-PBF) processing finds its application in various metal forming industries such as aerospace, automotive and medical industries. Ti6Al4V alloy is widely used in aerospace applications. The main ...
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(University of Pretoria, 2020)The focus of the current study was to investigate dephosphorization of ferromanganese to produce a low P containing alloy that could effectively be used for the production of AHSS. The study involved conducting laboratory ...
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The development of a risk-based model to predict corrosion fatigue failures in subcritical boilers (University of Pretoria, 2020)The increased energy demand within South Africa has led to continued periods of load shedding. This has had an adverse impact on industry, quality of life and the economy as a whole. A larger requirement for production ...
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(University of Pretoria, 2021)This report investigates the cause of the reduction in workability and increased ageing of a blast furnace taphole clay. The taphole clay contains 60 mass% alumina, with a phenol-formaldehyde resole resin (PFR) and liquid ...
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(University of Pretoria, 2020)Preg-robbing gold ores reduce the gold recovered with conventional aqueous cyanide processing by adsorption of the leached gold onto the ore which is then lost to the residue. Many ore constituents adsorb gold in the ...
Now showing items 1-20 of 163