:: Skega Mill Lining Developments

Skega says it has raised potential grinding efficiency with the introduction of a new wide spacing system for its Poly-Met range of linings. This ensures more efficient grinding by avoiding the'pocketing' of rocks when they get stuck between lifters.

The Poly-Met rubber/steel combinations, rather than steel, means that lining weights are now 40% lighter and noise is reduced by up to 50%. Few parts are needed by the Skega system, saving installation time and minimising the cost and time lost to shutdowns for maintenance. Use of the system can readily cut 10 hours from a shutdown period, typically saving S100,000.

Skega has also introduced the new Ecoline lifter bats, a system in which the rubber lifting bar can be easily separated from the aluminium attachment profile. A detachable fixing system allows it to be replaced when it eventually wears out. The alumina profile can then be fitted with a new rubber bar ready to resume work. Reusing the alumina profile gives a significant cost saving and reduces the amount of waste compared to earlier bonded systems where both alumina and rubber had to be replaced together.

The system is tailor-made to each installation and is quick to install and easy to replace. Lifter bars are delivered in standard lengths to be cut during installation. A full range of profiles and sizes is available. Bars are 1,760 mm long with widths of 140 mm and 100 mm and height; from 85 mm to 135 mm to suit different applications. The width, height and spacing of the Ecoline lifting bar can be matched with suitable plate thicknesses to produce optimum performance in any situation.