Mineral Processing and Technology Research Centre Department of Metallurgy School of Mining Metallurgy and Chemical Engineering Faculty of Engineering and the Built Environment University of Johannesburg Doornfontein Campus P. O. Box 17911 South Africa;
Department of Industrial Chemistry Faculty of Polytechnique University of Likasi 177 Shituru Campus P. O. Box 1946 Likasi Democratic Republic of the Congo;
Materials & Process Engineering (iMMC-IMAP) UC Louvain Place Sainte Barbe 2 1348 Louvain-la-Neuve Belgium;