ABSTRACT
Wear in the roll crusher liner is a perennial problem. It is a complex phenomena involving service variables, environmental conditions, lubrication and corrosion. Wear resistance of a material is related to its microstructure and changes take place in the microstructure during the wear process. Microstructural investigation was performed in this paper to determine wear mechanisms. Scratching, surface deformation, micro-cracks and cavity formation have a major effect on liner material loss in a crusher (Lindqvist & Evertsson 2003). Investigations of liner wear will benefit in improving crusher performance, reduction in down time and uniform product size distribution by selecting a suitable liner material. At different zones of roll crusher, wear mechanism has been found to be different. The present study was performed to identify the wear zones and wear mechanisms with an aim to improve the quality of the liner material. The theoretical investigation was then confirmed by studying the worn-out liner material. In this study, the wear phenomena are examined for a smooth liner of a double roll crusher used for comminuting coal.
