Xolisa Camagu Goso

Xolisa Camagu Goso
Mintek · Pyrometallurgy - Technology Development

Doctor of Philosophy

About

18
Publications
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64
Citations
Introduction

Publications

Publications (18)
Conference Paper
Full-text available
The importance of rare earth elements (REEs) in the transition to a green economy is gaining momentum. Given the vast primary and secondary resources of REEs in Southern Africa, there is potential for the region to contribute significantly to the global REE production. Mintek is a player in the REE space and conducts REE research across several dis...
Article
Full-text available
This paper presents the results of an ultrasonic-assisted alkali-acid leaching process for concurrently recovering rare earth elements (REEs) and coal from South African run-of-mine (RMC) and discard (DC) coal. The response surface methodology (RSM) was used during the alkali leaching of DC to evaluate and optimise the process parameters. REE recov...
Conference Paper
Full-text available
Ilmenite is typically processed by carbothermic smelting in an electrical arc furnace (EAF) at about 1650°C to produce primarily a titania slag containing >85% TiO2 and a pig iron coproduct. Ilmenite smelting contributes significantly to global climate challenges as a consequence of being carbon-and energy-intensive. To minimise the risks, Mintek d...
Article
Full-text available
Sulfation roasting test work was conducted to investigate the selective extraction of rare earth elements (REEs) from the REE-bearing Zandkopsdrift (ZKD) ore from the Southern Africa region. Sulfation roasting efficiency and selectivity were studied through the determination of phase compositions and leaching efficiencies of REEs from roasted mater...
Conference Paper
Full-text available
Given the vast resources of battery materials in Southern Africa, Mintek is undertaking battery materials research across a number of disciplines including hydrometallurgy, pyrometallurgy, advanced materials, mining and mineral economics. In a region with a large extractive metallurgy industry, there is potential for Southern Africa to be a signifi...
Article
Full-text available
Smelting production of a limestone-fluxed titaniferous slag with low MgO content for subsequent beneficiation using the modified Upgraded Slag (UGS) process was investigated, with the aim of producing a marketable titania product. Smelting of titaniferous magnetite (titanomagnetite) with a carbon reductant and limestone flux was conducted in a wate...
Conference Paper
Full-text available
Laboratory-scale test work was conducted to study the effect of the CaO to MgO ratio on the carbothermic smelting of titaniferous magnetite (titanomagnetite) for the recovery of titanium. The smelting characteristics were studied using the original limestone-dolomite fluxing strategy with a CaO to MgO ratio of 22:8 and the updated dolomite fluxing...
Article
Full-text available
Test work was conducted to investigate the effect of magnesia and alumina crucible wear in laboratory-scale smelting tests on titaniferous magnetite (titanomagnetite) in terms of iron and vanadium recoveries as well as slag properties. The study was motivated by the desire to develop capacity to provide technical support to the minerals industry in...
Preprint
Full-text available
A literature investigation of the Fe-V-O ternary oxide system was conducted on all available phase equilibria and thermodynamic property data at 1 atm total pressure. Limited data is available for high temperature conditions at reduced oxygen partial pressures. The results were used in designing the experimental setup and planning. In this paper we...
Article
Full-text available
Rare earth elements (REEs) are commonly extracted from various resources using hydrometallurgical processes. However, these processes tend to be unselective, with high co-extraction of gangue components. Co-extraction of gangue elements is undesirable as it complicates downstream separation and purification processes. Preliminary tests were conduct...
Conference Paper
Full-text available
Rare Earth Elements (REE) have unique magnetic, luminescent and electrochemical properties making them applicable in various industries. REEs are currently extracted by conventional hydrometallurgical processes which have high REE and gangue metals recoveries, rendering them unselective. Preliminary sulphation roasting tests were conducted to show...
Article
Full-text available
Test work was conducted to investigate the effect of magnesia and alumina crucible wear in laboratory-scale smelting tests on titaniferous magnetite (titanomagnetite) in terms of iron and vanadium recoveries as well as slag properties. The study was motivated by the desire to develop capacity to provide technical support to the minerals industry in...
Chapter
The current liquidus surface and phase equilibria established in air for fluxed titaniferous magnetite (titanomagnetite) slags conforming to a composition of 37.19% TiO2, 19.69% SiO2, 13.12% Al2O3, and 30.00% of various ratios of CaO+MgO were reviewed at applicable PO2 using FactSage simulation and phase composition of a real plant titanomagnetite...
Article
Full-text available
Laboratory-scale tests were conducted at Mintek for the production of titanium powder from particulate Kroll sponge by the hydrogenation- dehydrogenation (HDH) process. The aim of this work was to produce titanium powder for powder metallurgical consolidations. The work involved the production of titanium powder at optimized conditions, which inclu...

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