Posted by Daniel Gleeson on tenth September 2024
Taking a look at a typical mining website, put on metal is used as liners in hoppers, feeders and chutes, in addition to for hammers in crushers or in screens for sorting.
Hardox® 600 is, SSAB says, a put on metal that performs effectively throughout a surprisingly big selection of abrasive supplies, working necessities and sorts of tools, together with for iron ore miner LKAB.
Hardox 600 has a nominal hardness of 600 HBW. Regardless of its hardness, it has a toughness that’s uncommon for such a tough put on metal, based on the corporate. This offers it excellent put on resistance, whereas enabling it to withstand affect harm from rocks and different heavy hundreds. It is usually through-hardened, with a minimal core hardness of 90% of the assured minimal floor hardness.
As a significant iron ore firm, LKAB can’t afford any loss in productiveness. Unscheduled downtime can severely affect throughput and, in flip, monetary efficiency. It ships round 30 Mt of iron ore every year from its harbour in Narvik, above the Arctic Circle in Norway.
When LKAB began to expertise too many unplanned shutdowns – and undesirable related prices – it seemed for a extra sturdy put on metal for its skips and chutes. That’s why it selected Hardox 600, one of many hardest grades of Hardox metal. Earlier than its determination, LKAB collaborated with SSAB on a efficiency optimisation challenge, which in the end gave it the inexperienced mild to go forward with Hardox 600.
Because of the many components influencing put on life in mining operations, SSAB says it all the time suggest an intensive evaluation by put on specialists. For LKAB, a 600 HBW metal was your best option. In most put on conditions, there’s a candy spot the place the damage charge drops considerably if the metal’s hardness is excessive sufficient relative to the severity of the abrasive materials.
