As mill sizes increases, the required volumetric capacity of the pulp lifters grows proportionally to mill volume. Pulp-lifter design can be a significant consideration for SAG mills, particularly for large mills.

but experience higher wear rates than those with a steeper face angle. This ratio range is stated without reference to face angle in general terms, and at equivalent spacing-to-height ratios, lifters with greater face-angle relief will have less packing problems when new. As a guideline, mill throughput is maximized with shell lifters between ratios of 2.5:1 and 5.0:1.

Based on experience, mill-liner designs have moved toward more open-shell lifter spacing, increased pulp lifter volumetric capacity, and a grate design to facilitate maximizing both pebble-crushing circuit utilization and SAG mill capacity. Each of these topics has had a considerable amount of research, and numerous case studies of evolutionary liner design have been published. In general terms, lifter spacing and angle, grate open area and aperture size, and pulp lifter design and capacity must be considered. To a more significant degree than in other comminution devices, SAG Mill Liner Design and Configuration can have a substantial effect mill performance.

Discharge End Mechanical Considerations.

Good Mill Liner Alloys And Design Installation and Prudent Operational Practices.

Semi-Autogenous Mill Liners Designs Alloys and Maintenance Procedures.

Half life crack lifer