This paper analyses the burn problem produced from highspeed crushgrinding of the bearing outer ring raceway. And a solution is presented, then good results are achieved by practical application.
In order to analyses the influence and solve the problem, this paper introduces three different ways: semi-autogenous grinding, washing ore and the crush equipment upgrade.
As the barrel rotates, the material is crushed between the individual pieces of grinding media that mix and crush the product into fine powder over a period of several hours.