Resumo

CLAASSEN, J.O.. Yield improvement at a mid-sized coal mine in the Witbank coalfields. J. S. Afr. Inst. Min. Metall. [online]. 2013, vol.113, n.10, pp.761-768. ISSN 2411-9717.

A study was initiated and solutions implemented to address the root causes of a 30°/o^J0°/o lower than predicted product yield achieved at a Mpumalanga coal mine. A holistic MRTM approach, which focused on improving exploration, geological sampling and analysis, geological modelling, planning, mining, and beneficiation practices, was used. The study indicated that deviations in the planned versus actual yields at the DMS plant were caused mainly by incorrect geological yield predictions, high and variable levels of dilution, and near-dense material, as well as the textural properties of the ore.

Palavras-chave : MRTM; mining value chain improvement; Witbank coalfields; complex geology.

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