Browsing Metallurgical Engineering by Issue Date

Now showing items 1-8 of 8

Evaluation of blended collectors for improved recovery of PGEs from western bushveld UG2 deposit.

Moja, Malebogo Gloria (2018)

Lonmin mining company located in the Bushveld Complex of South Africa is one of the main platinum group elements (PGEs) producers in the world. Its core operations are made up of 11 shafts and inclines. There are resources ...
Biocompatibility evaluation of sintered biomedical Ti-24Nb-4Zr-8Sn (Ti2448) alloy produced using spark plasma sintering (SPS).

Madonsela, Jerman S. (Vaal University of Technology, 2018)

Solid titanium (Ti), Ti-6Al-4V (wt.%), and Ti-24Nb-4Zr-8Sn (wt.%) materials were fabricated from powders using spark plasma sintering (SPS). The starting materials comprised of elemental powders of ASTM Grade 4 titanium ...
Evaluation of the corrosion behaviour and biocompatibility of Ti-34Nb-25Zr alloy for biomedical applications.

Mahundla, Mithavini R. (Vaal University of Technology, 2018-11)

Pure Ti, Nb, Zr, Al and V powders were used as starting materials. Ti, Ti-6Al-4V and Ti-34Nb-25Zr materials produced by SPS were compared on the basis of density, microstructure, biocompatibility, tensile strength and ...
Development of a potentially low young's modulus (Ti-34Nb-25Zr-XFe) base alloy for orthopaedic device application.

Nemavhola, Mavis Khathutshelo (Vaal University of Technology, 2019-03)

Elemental titanium (Ti), niobium (Nb), zirconium (Zr), and iron (Fe) powders were used to fabricate four near-β alloys with non-toxic of composition Ti-34Nb-25Zr, Ti-34Nb-25Zr-0.4Fe, Ti-34Nb-25Zr-1.2Fe, and Ti-34Nb-25Zr-2Fe ...
Selective recovery of base and precious metals from printed circuit board physical processing dust

Oluokun, Oluwayimika O. (Vaal University of Technology, 2020-02)

Dust generated during comminution of end of life printed circuit boards (PCB), typically having d80 of 212 μm, contains copper and gold up to 6.32 % and 635 g/ton, respectively. The dust particles being highly diverse in ...
An investigation into the effect of physico-chemical factors affecting the extraction of calcium from iron and steel slag

Kohitlhetse, Itumeleng (Vaal University of Technology, 2020-02)

During steel production, a large quantity of waste residue commonly known as slag is produced with a reasonable amount of metals such as calcium and magnesium. Iron and steel slags have various economically viable applications ...
Development and characterization of Ti-Sn-SiC and Ti-Nb-SiC composites by powder metallurgical processing.

Mathebula, Christina (Vaal University of Technology, 2020-08)

This work is an investigation in the development and characterisation of porous Ti-Sn-SiC and Ti-Nb-SiC composites. Pure Titanium (Ti), Tin (Sn), Niobium (Nb) and Silicon carbide (SiC) powders were used as starting materials. ...
Effect of fault and transmission error on a spur gear meshing stiffness by vibration and time-frequency techniques

Yakeu Happi, Kemajou Herbert (Vaal University of Technology, 2021)

To meet the ever-increasing demand for maintenance of gear systems, industrial companies have traditionally depended on the shutdown of the machines before processing the fault diagnosis. Nowadays, online monitoring has ...