Longer life for a lighter load
Dexing Copper Mine, one of the largest open-pit copper mines in Asia, wanted to find a more sustainable wear plate for the liner plate of its hoppers. After testing various brands, SSAB’s Hardox 550/600 was the clear choice.
Before applying Hardox, the liner plates of the hoppers quickly wore out during the heavy daily operations. Frequently changing the plates increased the workload and downtime, since it took two weeks and caused several maintenance difficulties.
“The abrasion on the ore-extraction system has troubled us for a long time,” says Huang Chuanlu, Equipment Manager for Dexing’s railway transportation section.
Last year Dexing applied Hardox 550 and 600 on the sides and bottoms of its 18 ore-extraction machines, and the results were dramatic.
“The service life of the liner plate can be extended by two or even three times,” Huang says. “This reduces the maintenance frequency and reaches our target of changing the plate once every two years. The engine load is also reduced as the thinner Hardox wear plate makes the hopper much lighter.”
“Relying on Hardox, the downtime of the system has shrunk by half and production has increased. It guarantees sustainable operations and remarkably improves our turnover. We will continue to work with SSAB to change the remaining systems as well.”