Primary feeders

If the drop height is high and material throughput is low and/or uneven, rubber wear liners are often the best solution. In these scenarios the impact energy can be very high, and the large rocks will often hit the feeder bottom directly.

That will bring massive loads and vibrations to bear on the underlying structure. Rubber can reduce such vibrations by up to 95% compared to conventional steel linings.

If the drop height is more moderate and the flow of material is continuous and deep, then a ceramic and rubber hybrid is often the best option. Ceramic material can be quite brittle, but compared to rubber it provides much better durability against sliding wear from large masses. When ceramics are combined with a rubber backing, the resulting hybrid solutions can withstand surprisingly high levels of impact.

In scenarios with moderate to high levels of impact in combination with an uneven flow of material (that is, when at times the material bed depth is high but at other times the feeder bottom is completely exposed), Sandvik’s HX900 is the best solution. It withstands both high levels of impact and copes excellently with potential sliding wear from large masses.