Modern Mining November 2020

COMMODITY FOCUS – COAL

Coal miners’ drive for cost reduction and increased productivity

While coal remains South Africa’s staple energy source for the foreseeable future, the coal mining industry is facing an uncertain period, with ores grades depreciating significantly, exacerbated by low coal prices and the general low appetite to fund new coal plants. In the face of these struggles, Frengelina Mabotja, senior metallurgist and capital sales engineer at Kwatani, tells Modern Mining that process equipment has a huge influence in coal mines’ drive for ongoing cost reduction and increased productivity to mine profitably.

N otwithstanding South Africa’s aim to reach net zero emissions by 2050, the country’s energy plan still anticipates a continued major role for coal. Currently, more than 90% of South Africa’s energy is generated from coal, mainly mined and burned in the north-east by state-owned power provider, Eskom. South Africa’s coal mining landscape is driven largely by its domestic market and remains responsible for sustaining a significant chunk of the country’s energy requirements. Most of the coal supply, says Frengelina Mabotja, senior metallurgist and capital sales engineer at Kwatani, is currently from a handful of major mining

Frengelina Mabotja, capital sales engineer at Kwatani.

houses. In recent years, she says, Eskom started moving away from the traditional cost-plus models in its quest to develop and support the junior miners market with black ownership, resulting in a rise of junior coal players. “Kwatani has over the years partnered with both majors and junior miners, utilising our expertise to provide customised cost-effective, fit-for-purpose processing solutions to suit both parties’ needs. We work across the coal mining spectrum and are equipped to understand the specific needs of both the majors and juniors and engineer solutions which cater to individual specific needs,” explains Mabotja. For this reason, Kwatani offers two distinct equipment ranges tailored to each party’s specific requirements and capital budget. The requirements can vary significantly between a junior, small scale miner and a long-life major i.e. operating lifespan, tonnage throughput, efficiency and yield require- ments as well as type/size of product needed, among other parameters. Industry trends The industry, according to Mabotja, indicates that the conditions that will be encountered in future coal mines will undoubtedly differ from the current ones, as the more easily mined coal has already been processed. As seams with greater amounts of overburden are mined, she says, surface mining will potentially become much more expensive. “The coal industry is currently enduring low coal prices with a recovery in the short term very unlikely.

A 4,3 m screen being prepared for dispatch from Kwatani.

20  MODERN MINING  November 2020