Elongation of transfer chute service life on material perception

Abstract

This study has looked into wearing mechanism on liners in transfer chute used at Oyu Tolgoi mine. And it searched for ways to reduce wearing rate so that the mining operation could benefit in numerous ways. Wearing takes place dominantly in form of abrasive wear whose base is on micro-cutting mechanism. Worn liner samples made of Hardox 500 mark and a bag of coarse ore were provided for study purpose by the company. For referential purpose, the same intended steel marked as 110Г10Л was requisted and supplied from Erdenet Mine. After analytic analyses, it has been still believed that wearing rate advances as thickness of liners reduce. The conducted hardness test shows hardness gradient, emphasizing wear rate deviation. But microscopic analysis does not show much of evidence that wearing rate could be different over thickness. And heterogeneous wearing rate over liners was noted. The employed steel - (as producers state that martensite - bainitic structured) Hardox 500 for making liners, is known as the best selection for operation under high abrasive conditions.