• Copper recovery through smelter slag flotation in Atacama, Chile : an industrial case study 

  Pavez, Osvaldo; Herrera, Pablo; Gonzalez, Miguel; Rivera Li Kao, Oscar (Universidad Nacional de Colombia, 2021-04)

  Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. This study consisted of the physical, chemical, and mineralogical characterization of the copper slag, along ...
• Influence of milling parameters on the structural and phase formation in Ti-20%Al alloy through mechanical milling 

  Annan, Kofi Ahomkah; Daswa, P.; Motumbo, K.; Siyasiya, Charles Witness (Elsevier, 2021)

  Titanium aluminides are considered the choice material for next generation propulsion systems due to their high specific strength and high temperature performance coupled with good oxidation resistance. They are considered ...
• Failure analysis of a 34CrMo4 seamless steel gas cylinder filled with a mixture of fluorine and nitrogen gases 

  Annan, Kofi Ahomkah; Njoroge, E.G. (Eric); Siyasiya, Charles Witness; Mostert, R.J. (Roelf) (Elsevier, 2021-01)

  A fifty litre seamless gas cylinder manufactured from a 34CrMo4 low carbon alloy steel which was in service for five years failed in an unexpected manner, causing severe damage. The cylinder was filled with a mixture of ...
• Effect of thermal annealing on SHI irradiated indium implanted glassy carbon 

  Njoroge, E.G. (Eric); Hlatshwayo, Thulani Thokozani; Mlambo, Mbuso; Odutemowo, Opeyemi Shakirah; Annan, Kofi Ahomkah; Skuratov, V.A.; Ismail, M.; Malherbe, Johan B. (Elsevier, 2021-09)

  Please read abstract in the article.
• Microstructural changes in 16-8-2 weld metal during exposure to 750 degrees C for extended times 

  Swanepoel, D.B.; Pistorius, Pieter Georg Hendrik (Springer, 2022-02)

  Ever-leaner compositions are targeted for nominal type 16–8-2 weld metals in attempts to limit sigma-phase formation during elevated temperature operation. Three variants of type 16–8-2 weld metals were exposed to aging ...
• Investigation of formation of precipitates and solidification temperatures of ferritic stainless steels using differential scanning calorimetry and Thermo-Calc simulation 

  Konadu, David Sasu; Pistorius, Pieter Georg Hendrik (Springer, 2021-08)

  Please read abstract in the article.
• The effect of titanium oxide additions on the phase chemistry and properties of chromite-magnesia refractories 

  De Villiers, J.P.R. (Johan); Mulange, Delphin; Garbers-Craig, Andrie Mariana (MDPI, 2020-03)

  Please read abstract in the article.
• Microstructural response of Ti6Al4V ELI alloyed with molybdenum 

  Arthur, N.K.K.; Siyasiya, Charles Witness; Pityana, S.; Tlotleng, M. (Springer, 2021-07)

  Alloy development opens the way to create new materials for specialized processes, and attain materials that are usually difficult to acquire. Property enhancements and part performance is achievable in an exciting new way ...
• Studying the microstructural effect of selective laser melting and electropolishing on the performance of maraging steel 

  Ahmadkhaniha, D.; Moller, Heinrich; Zanella, C. (Springer, 2021-09)

  Selective laser melting is one of the additive manufacturing technologies that have been known for building various and complicated shapes. Despite numerous advantages of additive manufacturing technologies, they strongly ...
• Characterization of surface roughness and subsurface pores and their effect on corrosion in 3D-printed AlSi10Mg 

  Thuketana, Nkhensani Susan; Taute, Carlien; Moller, Heinrich; Du Plessis, A. (Southern African Institute of Mining and Metallurgy, 2020-06)

  Denel Dynamics, a South African armaments development and manufacturing company, is interested in introducing additive manufacturing (AM) in the fabrication of missile components. The practicality of using AM for industrial ...
• An investigation into the permeability of a PGM slag freeze lining to sulphur 

  Steenkamp, H.; Garbers-Craig, Andrie Mariana (Southern African Institute of Mining and Metallurgy, 2020-06)

  Sulphur driven off from the sulphides in the black top of PGM smelters has in past years caused failure of copper coolers. When the magnesia-chromite bricks in the smelter were replaced with graphite blocks, however, ...
• Phase chemistry of submerged arc welding (SAW) fluoride based slags 

  Coetsee, Theresa (Elsevier, 2020-09)

  Please read abstract in the article.
• Structural roles of TiO2 in CaF2- SiO2-CaO-TiO2 submerged arc welding fluxes 

  Zhang, Yanyun; Coetsee, Theresa; Yang, Haifeng; Zhao, Tan; Wang, Cong (Springer, 2020-10)

  A series of fused CaF2-SiO2-CaO-based fluxes geared towards submerged arc welding has been prepared with incremental TiO2 additions. Through systematic investigation on physical properties, quantitative relationship between ...
• Investigating the effect on power draw and grinding performance when adding a shell liner to a vertical fluidised stirred media mill 

  Ford, Elizma; Naude, Natasia (Elsevier, 2021-01)

  A comparative testwork programme was conducted using a laboratory scale vertical fluidised stirred media mill. The mill was operated with and without the presence of a disc liner on the shell. Results showed that when the ...
• Impact of phase evolution in Platreef and UG-2 concentrates on matte drainage in the black top of a platinum group metal smelter 

  Rivera Li Kao, Oscar; Garbers-Craig, Andrie Mariana (Taylor and Francis, 2022)

  Please read abstract in the article.
• Influence of the temperature of vacuum carburizing on the thickness of the carburized layer and properties of steel parts 

  Heintzberger, Paul Johan (Springer, 2020-07)

  The properties of steel parts after carburizing in low-pressure acetylene are studied. The thickness of the carburized layer, its hardness, the microstructure, and the hardness of the core are determined after carburizing ...
• Improved ultrafine coal dewatering using different layering configurations and particle size combinations 

  Snyman, M.E.C.; Naude, Natasia (Southern African Institute of Mining and Metallurgy, 2019-03)

  Coal fines produced during processing are difficult to dewater and result in a lower quality product and consequent lower value. A South African coal mine experiences severe difficulties with belt filter dewatering ...
• Improving cathode morphology at a copper electrowinning plant by optimizing Magnafloc 333 and chloride concentrations 

  Jacobs, J.C.; Groot, D.R. (Southern African Institute of Mining and Metallurgy, 2019-11)

  Electrowinning circuits normally use a number of additives in the electrolyte to promote smooth, compact deposits. These cathodes have the best levels of purity. When electrowinning is coupled to a solvent extraction ...
• Multiphase flow modelling of lancing of furnace tap-holes : validation of multiphase flow simulated in OpenFOAM® 

  Erwee, Markus Wouter; Reynolds, Q.G.; Zietsman, J.H.; Bezuidenhout, P.J.A. (Southern African Institute of Mining and Metallurgy, 2019-06)

  Pyrometallurgical furnaces are tapped through tap-holes that are opened with drills and oxygen lances. The lance is often used on its own or as the last step of opening the tap-hole. Interaction of oxygen with molten ...
• Effect of aluminium on polarisation parameters and deposit characteristics in typical nickel sulfate electrolyte for electrowinning applications 

  Schoeman, Liezl; Nsiengani, Emmanuel Nsanda; Sole, K.C. (Kathryn); Sandenbergh, Roelf (Elsevier, 2020-06)

  Impurities present in the sulfate electrolyte during nickel electrodeposition influence the electrowinning process and morphology of deposited nickel metal in various ways. The presence of aluminium can be either detrimental ...

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