Modern Mining June 2025

CRUSHING & SCREENING

can also include on-site training and knowledge sharing to help maintain these standards over the long term. Importantly, the assessment must consider the specific operating environment of the screen and how factors such as seasonal changes may influence its performance. “Another key factor is the ore grade being fed into the crushing plant which can become more abrasive as geological conditions evolve,” he explains. “This often results in operating conditions that differ from those the screen was originally specified for - requiring adjustments to maintain performance.” Through its collaborative hands-on approach, Sandvik Rock Processing starts the assessment with a detailed visual inspection to determine whether the machine’s structure and components still meet OEM standards and expectations. “We then carry out a dynamic - or operational - test to closely assess the machine’s mechanical performance,” he continues. “Any defects we identify are carefully documented, forming the basis of a report that outlines the corrective steps needed to restore the machine to OEM standards.” McLaggan also points out the importance of understanding the relationship between crushers and screens within the same circuit as their performance can directly impact each other. This makes it essential for OEM specialists to consider the entire circuit during the assessment process. “Empowering our customers’ teams is a key part of our lifecycle management approach,” he adds. “We understand the OEM can’t be on site every day, but well trained operators can carry out regular checks. By knowing what to look for, they can act proactively and notify management and the OEM at the first sign of performance issues.” Alternatively, McLaggan highlights the value of service level agreements (SLAs) where Sandvik Rock Processing places a dedicated team on site. These experts take full responsibility for the condition and performance of the screens, providing regular reports and updates. “This arrangement allows the customer to focus on hitting production targets with confidence that we are there to ensure every screen runs to specification,” he explains. “We also manage inventory, ensuring that essential wear parts and components are available exactly when needed to minimise downtime.” Planned maintenance is a key part of

On-site training empowers mine personnel to conduct routine checks and flag issues early, enhancing the effectiveness of lifecycle management.

G avin McLaggan, Performance Development Manager for Sandvik Rock Processing’s SK range of vibrating screens, spoke to Modern Mining explaining that there are several proactive measures operators can implement to avoid these common pitfalls. By working closely with an OEM partner like Sandvik Rock Processing, screen owners can establish a strong foundation for effective lifecycle management and long term operational success. “Mining companies expect their screening equipment to deliver maximum returns, as it’s often a mission-critical component in achieving production targets,” says McLaggan. “The best starting point for ensuring this performance is a thorough baseline assessment on site.” This initial step allows for a comprehensive gap analysis, highlighting areas for improvement to restore the equipment to OEM machine and performance standards. The process Many mines and quarries aim to maximise the performance and lifespan of their vibrating screens, but often overlook key factors that stand in the way of achieving these outcomes. Lifecycle management of screens is key to lowest cost per tonne

Gavin McLaggan, Performance Development Manager for Sandvik Rock Processing.

16  MODERN MINING  www.modernminingmagazine.co.za | JUNE 2025