Beneficiation potential of a low-grade coal from the Emalahleni (Witbank) coalfield

• Autorzy: Nyoni Sancho , Bwalya Murray , Chimwani Ngonidzashe

Identyfikatory

DOI

10.37190/ppmp/126242

• Języki publikacji: EN

Abstrakty

EN

The challenge of coal depletion has, among other resolutions, forced countries such as South Africa which depend heavily on coal-generated electricity to consider low-grade coal to meet their energy requirements. The Emalahleni Coalfield has an abundance of low-grade coal in-situ and in discards obtained from the No. 4 seam. This research thus seeks to give a technical assessment of the beneficiation potential of such coal for use in power stations linked to the coalfield. To that end, gravimetric and flotation beneficiation techniques were used, and their demineralisation capacities were assessed using physicochemical and petrographic analysis techniques. The results obtained showed that demineralisation of the coal was possible; with 29.1 and 33.6% ash obtained for an ~50% mass yield from gravimetric and flotation beneficiation techniques, respectively, against a thermal ash content requirement of 25–34% for coal-generated electricity.

Słowa kluczowe

EN

low-grade coal; beneficiation; gravimetric separation; flotation; physicochemical analysis; petrographic analysis

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2020
• Tom: Vol. 56, iss. 5
• Strony: 849--859
• Opis fizyczny: Bibliogr. 35 poz., rys., tab.

Twórcy

autor

Nyoni Sancho

• Mineral Processing Research Group, School of Chemical and Metallurgical Engineering, Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, South Africa

autor

Bwalya Murray

• Mineral Processing Research Group, School of Chemical and Metallurgical Engineering, Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, South Africa

autor

Chimwani Ngonidzashe

• Institute for the Development of Energy for African Sustainability (IDEAS), College of Science, Engineering and Technology, School of Engineering, University of South Africa, Johannesburg, South Africa

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