Modern Mining November 2020

COMMODITY FOCUS – COAL

Unpacking new trends in coal processing The composition of coals mined in different areas can vary widely. Since the very early days of mining, coal quality has been improved by removing unwanted mineral matter. Over time, coal processing plants have evolved considerably. In a one-on-one with Modern Mining , Ernst Bekker, product specialist cyclones at Multotec, unpacks some of the new trends in coal processing.

Ernst Bekker, product specialist at Multotec.

C ommenting on some of the major trends in coal processing, Ernst Bekker, product special- ist cyclones at Multotec, says coal miners are today sweating their assets, and want longer lifecycles from their process equipment. This means that better maintenance is required. Customers are also wanting shorter lead times for stock; they want to hold less stock on site and rather rely on the sup- plier for quick delivery. “Over the past couple of years, we have seen coal processing equipment on mines being pushed to the limits of its design capability, with higher ton- nages placing more demands on equipment. Mines are therefore relying more on suppliers to maintain equipment and ensure that it performs optimally. This requires closer working relationships between the

supplier and customer; in the past suppliers would be called upon only when necessary,” says Bekker. The average age of coal processing plants is increasing steadily, he says, as not many new plants are being constructed. To keep these plants oper- ational, suppliers are required to ensure that their equipment lasts longer but remains reliable and efficient. Water scarcity and acid mine drainage are a grow- ing focus at coal plants, where there is a strong drive towards zero liquid discharge and maximum water recycling. “Mines want to reduce their water usage in the process plant, and so suppliers must also look at how they can contribute. This requires that our equipment designs carefully balance water use and efficiency; the customer still needs a high level of

Multotec is there to support mines that rely more on suppliers to maintain equipment and ensure optimal performance.

24  MODERN MINING  November 2020