MATERIALS HANDLING
wearliners can deplete quickly and may need extra protection. A product called the canoe liner is made from durable urethane molded around a rugged steel plate to absorb impact and abrasion. It is an engineered urethane strip molded directly around a protective steel plate. The protective plate being integrated directly into the urethane liner is unique to Martin Engineering and prevents material from fouling the space between the urethane and the steel causing delamination. Separation tests have shown it delivers superior shielding of the skirt sealing system and skirtboard over other designs.
CONCLUSION Conveyor design engineers recommend taking a holistic view of the system and choosing solutions that address the causes of downtime and workplace hazards from loading to discharge.
Investing in modern
technology that provides a longer equipment life, better results, and a greater return on investment (ROI) over the long term leads to higher production and a lower cost of operation.
For more information visit
www.martin-eng.com
Large material outdoor transfer
Mine in Witbank, South Africa Technicians from
A coal mine in Eastern South Africa producing 3.4 million tons (3.1 million tonnes) of coal per year was experiencing heavy spillage and system damage along the length of a main conveyor. Impact idlers allowed excessive belt sag, causing high volumes of spillage. Dust, fi nes fouled idlers, and rocks were being lodged between the belt and the skirt, resulting in unscheduled downtime due to frequent equipment failures. Labour was diverted for cleanup, further raising operating costs.
Martin Engineering South Africa recommended the installation of seven High- Speed Impact Cradles. The specially designed idlers exceed the operating limits of typical impact bar-type belt support cradles. The rolling components minimise friction on the belt and maximise the life of the belt support structure. Low- friction polyurethane Martin ApronSeal Single Skirting was also installed to contain material and retain a tight seal on the running belt, further
reducing spillage. Six months after the installation, the volume of spillage has been reduced considerably, and the sealing system remains durable because no material is trapped beneath the seal. The lack of fugitive material has mitigated wear and tear on components and reduced the amount of labor needed for cleanup, maintenance and replacement of broken equipment. The project was so successful that the customer is converting 14 more transfer points.
www.engineerlive.com 41
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