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Lagging Selection: Hot Vulcanised Vs Cold Bonded

Lagging Selection is key to obtaining the best possible lagging performance and a recent visit to a pulley refurbishment facility emphasised this with three pulleys on the floor – two with cold bonded ceramic lagging and one with hot vulcanised ceramic lagging.

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Hot Vulcanised Lagging Application

Hot Vulcanised Lagging Application

Hot Vulcanised lagging application involves the chemical cross-linking of five reactive layers during the autoclave curing process. To achieve the desired 100% rubber tear adhesion all five layers must crosslink at the same time. Occasionally conditions can be created in the autoclave that prevent this happening, and result in non-uniform adhesion around the pulley circumference. This bulletin explains how these conditions occur and what needs to be done to eliminate this problem.

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Iron Ore Port Facility High Tension Bend Pulley – Elastotec Polyurethane Lagging

Iron Ore Port Facility High Tension Bend Pulley – Elastotec Polyurethane Lagging

In November 2017 a major iron ore port facility in the Pilbara decided to replace the ceramic lagging on a high tension bend pulley – the ceramic lagging had suffered physical damage on one edge that had exposed the pulley shell. With a capacity of around 180 million tonnes/annum of iron ore the port operates 24/7 year round and so reliability of the conveyor system is critical to achieving the maximum ore through put.

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Spare Pulleys - Hot Vulcanising VS Cold Bonded Lagging Featured Image

Spare Pulleys – Hot Vulcanised vs Cold Bonded Lagging

Spare pulleys are held so that in the event that an operational pulley requires replacement this can be done quickly and efficiently at the timing dictated by the mine maintenance personnel. The reason for changing a pulley broadly falls into two categories:

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Elastotec expands lagging operations Blog List Image

Elastotec Expands Lagging Operations

Our dedicated teams in Australia and Vietnam working really hard to understand lagging performance, and to engineer solutions that provide the longest possible lagging service life under all conditions.

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If you work in the mining industry, involved in conveyor maintenance, pulley manufacturing, conveyor design and conveyor maintenance, then, we would like to work with you to bring engineered pulley lagging solutions to the industry.