Patent ID: 8360350
Filing Date: 2013-01-29
Classification: B02C

Abstract:
1. A discharge end liner attachable to a discharge end wall in a grinding mill, the grinding mill including a hollow shell connected to the discharge end wall and rotatable in a predetermined direction about a central axis thereof to produce a slurry including liquid and particles from a charge in the shell, the discharge end wall extending between an outer edge thereof connected to the shell and an inner edge at least partially defining an inner opening substantially coaxial with the central axis, the discharge end liner comprising: a plurality of pulp lifter elements mountable on the discharge end wall for at least partially defining a plurality of chambers rotatable in the predetermined direction between a submerged condition, in which each said chamber is at least partially submerged in the charge to permit the slurry to enter each said chamber respectively, and a raised condition, in which at least a retained portion of the slurry in each said chamber is drainable into the inner opening; at least one grate subassembly positionable on the pulp lifter elements, for at least partially screening the slurry as it flows into each said chamber respectively while each said chamber is in the submerged condition; each said pulp lifter element comprising an outer portion extending from the outer edge of the discharge end wall toward the inner edge, and an inner portion extending from the inner edge toward the outer edge, when each said pulp lifter element is attached to the discharge end wall; at least part of the outer portion being formed to locate at least a part of said at least one grate subassembly in a predetermined position relative to the discharge end wall; and the inner portion being formed to define an obtuse angle between the outer and inner portions of each said pulp lifter element to permit said retained portion of the slurry in each said chamber respectively to evacuate therefrom respectively while each said chamber is in the raised condition.