Patent ID: 8646615
Filing Date: 2014-02-11
Classification: B07B

Abstract:
1. A screening disk for use on a roller of a roller screen for screening an ore feed, the roller screen having a plurality of adjacently located rollers, each adjacently located roller having a plurality of screening disks mounted in spaced apart relation on a shaft, the mounted screening disks being operable to intermesh with mounted screening disks on an adjacent roller of the roller screen to define interstices between respective mounted screening disks for permitting passage of sized ore portions through the roller screen, the screening disk comprising: first and second opposing side working surfaces; means for mounting the screening disk on a shaft of the roller for rotation therewith; and at least one of the first and second side working surfaces having a plurality of protrusions operable to extend outwardly into an interstice between the at least one side working surface and a side working surface of an adjacent mounted screening disk, the protrusions being operable to prevent oversize portions of ore passing through the interstice between the intermeshing screening disks; and wherein each protrusion is removably secured to the screening disk to facilitate replacement of the protrusion.