Improved fastening system for liner assemblies of ore mills

Details Improved fastening system for liner assemblies of ore mills Improved fastening system for liner assemblies of ore mills

B - Operations, Transporting

02

C

B02C 17/22 (2006.01)

Patent

CA 2277575

A segmented liner assembly and liner segment fastening system is disclosed for the rotatable shell of an ore grinding machine, the shell having a plurality of mounting bores formed therethrough. The liner assembly consists of a plurality of liner segments each of which has one mounting bore that extends into the body of the segment from its mounting surface and a mounting recess having a transverse size greater than that of the mounting bore which extends from the mounting bore to the grinding surface. A threaded member extends through a mounting bore of the shell and an aligned mounting bore of the segment into the recess of the segment and externally of the shell. The threaded member is screwed into a nut that is seated at the base of the mounting recess. In a first embodiment, the treaded member has an integrally formed wrenching head enabling the threaded member to be rotated and screwed into the nut, thus drawing the liner segment tightly against the inner surface of the shell. In a second embodiment, rather than a wrenching head, a second nut is used externally of the shell and the end of the threaded member has a smaller wrenching portion. In either case, when removal of the liner assembly is necessary for replacement, the threaded member is reverse rotated to remove it from the internal nut, enabling the liner segment to be removed.

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