• Characterization of surface roughness and subsurface pores and their effect on corrosion in 3D-printed AlSi10Mg 

  Thuketana, Nkhensani Susan; Taute, C.; 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, 2021)

  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 ...
• Simulation of the pressure drop across granulated mixtures using a coupled DEM – CFD model 

  Nyembwe, Mutombo Alainch; Cromarty, Robert Douglas; Garbers-Craig, Andrie Mariana (Elsevier, 2019-01)

  The sinter process converts mixtures of iron ore, iron ore fines and fluxes into a fused aggregate (sinter) that is used as burden material in the blast furnace. The rate of this process is predicted by measuring the ...
• Hot deformation characteristics and 3-D processing map of a high-titanium Nb-micro-alloyed steel 

  Qian, Pingping; Tang, Zhenghua; Wang, Li; Siyasiya, Charles Witness (MDPI, 2020-03-25)

  Hot deformation behavior of a high-titanium Nb-micro-alloyed steel was investigated by conducting hot compression tests at the temperature of 900–1100 °C and the strain rate of 0.005–10 s−1. Using a sinh type constitutive ...
• Purification of crude titanium powder produced by metallothermic reduction by acid leaching 

  Serwale, M.R.; Coetsee, Theresa; Fazluddin, S. (Southern African Institute of Mining and Metallurgy, 2020-05)

  The CSIR is developing a process to produce commercially pure (CP) Grade 4 titanium metal powder via direct metallothermic reduction of TiCl4. Crude titanium produced by this method is inevitably contaminated with unreacted ...
• A review of ore smelting in high carbon ferromanganese production 

  Coetsee, Theresa (Taylor and Francis, 2020)

  Manganese ore smelting is reviewed in terms of processing parameters such as feed material particle sizes, energy input methods, heat transfer modes, smelting mechanisms, experimental findings on specific smelting aspects, ...
• Microstructure and mechanical properties of selective laser melted Ti-3Al-8V-6Cr-4Zr-4Mo compared to Ti-6Al-4V 

  Madikizela, C.; Cornish, Lesley A.; Chown, Lesley H.; Moller, Heinrich (Elsevier, 2019-02)

  Beta Ti-alloys are known for their high fracture toughness and ductility, and are used in applications where these properties are needed, such as the aerospace and biomedical industries. The selective laser melting of the ...
• Evaluation of ilmenite as dense medium for dry coal fluidized bed beneficiation 

  Kalenda, T.N.; North, B.; Naude, Natasia (Taylor and Francis, 2019)

  Please read abstract in the article.
• Comparison of testing of susceptibility to solidification cracking of ferritic stainless steels using two methods 

  Konadu, D.S.; Pistorius, P.G.H. (Pieter) (Springer, 2020-06)

  The susceptibility to solidification cracking of unstabilized and stabilized ferritic stainless steels was investigated using self-restrained Houldcroft and Modified Varestraint-Transvarestraint (MVT) tests. Nine steel ...
• The effect of ternary alloying with vanadium on Ti-Pt shape memory alloys 

  Daswa, P.; Chikosha, S.; Mahlatjii, M.L.; Siyasiya, Charles Witness (IOP Publishing, 2019-11-09)

  Ti-Pt alloys have attracted much research due to high transformation temperatures (1050oC) which makes them suitable for high temperature applications in automotive and aerospace industries. The binary alloy exhibits ...
• The impact of forensic laser scanning technology on incident investigations in the mining industry 

  Webber-Youngman, R.C.W.; Grobler, H.; Gazi, T.; Stroh, F.; Van der Vyver, A. (Southern African Institute of Mining and Metallurgy, 2019-10)

  Risk assessments have been conducted in the South African mining industry over the past 20 years, but still we do not always correctly identify the root cause of an incident. An incident investigation is not only about ...

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