International Journal of Mineral Processing and Extractive Metallurgy

Volume 6, Issue 3, September 2021

  • Spatial Correlation of the Backscattered Ultrasonic Grain Noise in the Ultrasonic Inspection of the Forging Titanium Alloy

    Theodor Tranca, Iuliana Radu

    Issue: Volume 6, Issue 3, September 2021
    Pages: 33-40
    Received: 14 June 2021
    Accepted: 5 July 2021
    Published: 15 July 2021
    Abstract: Ultrasonic inspection is a routine Non Destructive Examination (NDE) method adopted by the aircraft engine manufacturers. However, the detection of smaller defects in such materials is made difficult by the complicated ultrasound-microstructure interactions. One of the adverse influences of the interactions is the high backscattered grain noise lev... Show More
  • The Reduction of Chrome in UG-2 Flotation Concentrate by Hydrometallurgical Means

    Abel Monele Mokadze, Sehliselo Ndlovu, Alan Shemi, Marek Dworzanowski

    Issue: Volume 6, Issue 3, September 2021
    Pages: 41-52
    Received: 7 July 2021
    Accepted: 29 July 2021
    Published: 4 August 2021
    Abstract: The South African platinum industry has advanced into an era of predominantly mining and processing Upper Group Two (UG-2) ore to extract Platinum Group Metals (PGMs). Flotation concentrates derived from processing UG-2 ore are typically characterized by high chrome contents (>3 wt.%) which are not amenable to conventional PGM smelters. The net eff... Show More
  • Bauxite Mining Conflicts in Guinea: Causes Identification, Analysis, and Countermeasures

    Issiagha Camara, Jiang Deyi, Oumar Barry, Frederick Caille

    Issue: Volume 6, Issue 3, September 2021
    Pages: 53-66
    Received: 5 August 2021
    Accepted: 17 August 2021
    Published: 27 August 2021
    Abstract: Mining conflicts are among the most widespread issues linked to natural resources development and management in mineral-rich countries. Guinea mining industries development presents a huge challenge in promoting integrated, prosperous, peaceful, and sustainable mining. The scramble of companies to exploit bauxite in the Boké region is correlated wi... Show More
  • Reducing Uncertainties in Gold Plant Design and Operations

    Charles Amoah, Grace Ofori-Sarpong, Richard Kwasi Amankwah

    Issue: Volume 6, Issue 3, September 2021
    Pages: 67-72
    Received: 1 September 2021
    Accepted: 16 September 2021
    Published: 27 September 2021
    Abstract: The conventional way of designing a plant is to determine the characteristics of rocks in terms of crushability, grindability and other properties that affect the mill throughput. These properties are most of the time determined from drill cores obtained during the exploration period. Such initial exploration campaigns drill to levels shallower tha... Show More