Weir Minerals’ Linatex Premium Rubber and Linard 60 dramatically improved the life of the Kalumbila Minerals Sentinel mine in Zambia, after the Weir Minerals Africa team were asked to provide a coating solution that would outlast the product in place.
To date, the Linatex and Linard solution has reached six times the life of the product previously installed at the Sentinel mine. The competing rubber product did not measure up to the high impact and abrasive nature of the 4,500 t / hr of slurry being delivered to the crusher discharge chute.
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The competitor’s rubber coating failed after two months, resulting in downtime and additional costs for equipment rental and specialist personnel. The remoteness of the site also made it difficult to obtain materials for repairs.
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The Weir Minerals Africa team specified a double-layered rubber coating solution. A 30mm bottom layer of Linatex Premium rubber has been selected to improve shock absorption, due to its resilient properties. Linard 60 with a thickness of 25 mm was chosen for the top layer, due to its resistance to cutting and tearing of the product relating to the discharge chute.
Weir Minerals Africa’s technical coating manager ensured that the order was delivered to the customer’s site on time. In collaboration with a team from the subsidiary Weir Minerals in Zambia, the lining of the parts took place during a scheduled shutdown of the plant.
The combination of 30mm Linatex Premium rubber and Linard 60 lasted a year with little to no signs of wear. This is a 250% improvement in life over the competing product. As a result, the Sentinel mine experienced reduced downtime and benefited from the associated cost savings and with the increased plant availability, maintenance staff were freed up to focus on other problematic areas of the l ‘factory.
Sentinel Mine has a long-standing relationship with Weir Minerals, with a line of Weir Minerals products installed and serviced for many years. With that in mind, mine was confident the team would provide an effective solution.
Linatex Premium Rubber is a proprietary vulcanized natural gum rubber produced through a unique liquid phase mixing process using high quality natural latex. It features exceptional strength, resilience, and cut and tear resistance, providing superior performance in wet abrasion conditions.