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SPECIALIST EQUIPMENT


personnel in close proximity to the moving conveyor for clean-up.” Coeur also noticed belt damage occurring as a result of fugitive material. “As material escapes, it accumulates on idlers and other components, often creating friction points that contribute to excessive wear and premature failure,” comments Martin Engineering product engineer, Daniel Marshall. “T at can have immediate costs such as belt replacement and seized bearings. And once an idler freezes, the constant belt movement can wear through the shell with surprising speed.”


Coeur managers initiated discussions with Hardrok Equipment – a licensed dealer of Martin Engineering equipment – revolving around the Evo Conveyor Architecture. “With proper design, premium components should improve productivity and safety, and that greater effi ciency delivers a lower total cost of ownership,” observes Hardrok president, Ted Zebroski.


The modular chute wall allows easy installation of skirt boards and stilling zone components to manage dust


To maintain a straight and consistent belt path, technicians then installed a Heavy-Duty Tracker Belt Tracking System


The primary seal is clamped to the steel skirtboard and a secondary ‘outrigger’ strip captures the fi nes


Installing a solution A team of eight technicians from Hardrok and two Martin supervisors began work during a scheduled outage. Over a seven-day period, fi ve Martin Evo Combination Cradles were installed to absorb the impact of the falling load, while minimising friction and belt wear. Steel-reinforced impact bars and adjustable wing supports matched standard trough angles of 20°, 35° or 45°. T e Combination Cradle replaces the centre bars with an impact idler roll, a design that delivers a fl at surface for an eff ective edge seal, but minimises the friction of having sliding bars all the way across.


Five Evo Slider Cradles with low- friction bars were also installed to support the belt edges and stabilise the belt line, eliminating belt sag and bounce. Located in the chute box after the impact cradles, the units’ “double- life” slider bars off er a superior seal with low friction and enable each bar to be fl ipped over at the end of its useful life to provide a second wear surface. T e result is a fl at and stable belt surface throughout the settling zone, reducing fugitive material and extending belt health. Both cradle designs feature Martin Engineering’s Trac-Mount technology, allowing the units to slide in and out easily for maintenance or replacement. 40ft of modular chute wall replaced the old structure, with a tail box and integrated dust curtains. A chromium carbide overlay on the inside of the chute protects the new containment system from intermittent high-burden depths on the conveyor. T e chute is raised 4in above the belt and fi tted


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