The Challenge

An underground coal mine located in the Bowen Basin, Queensland, transports coal via a series of ramp conveyors in a high impact ROM application.

The mine originally had an S grade belt installed, which had resulted in pitting and impact damage from the oversized rock. This was resulting in regular conveyor down-time to carry out cold repairs on the carry and return covers.

The client decided to substitute the S grade belt with a Z grade alternative. The increased thickness provided a short-term solution, lasting 12 months. However, when it came time to change, the belt had become water logged and could not be spliced.

Key Benefits

• >50% Reduction on Cost Price per Unit for ArmorShield vs S Grace
• Increased Impact Resistance
• Reduced Impact on Carry and Return Cover and Repairs Required
• Extended Belt Life

The Solution

• A specification and application review was conducted by Fenner Conveyors to determine the ideal belt type for the specific application supported by our highly qualified team of engineers and conveyor experts
• The Z-grade belt was replaced with ArmorShieldTM belt, offering extra cut and gouge resistance in relation to oversized product
• QA testing of the belt to confirm product designation and compliance
• Ongoing inspection and monitoring data for wear rate, expected life and throughput to ensure quality and performance
• On-site resource allowed performance monitoring and optimisation whilst belt was in operation
• Reports compiled and presented to the client

The Results

• Significantly improved cut and gouge resistance in relation to the high impact and oversized material environment
• 15% increase to belt life
• Extended time between belt change outs
• Eliminated conveyor down-time associated with carry and return cover repairs, reducing overall annual down-time
• Zero quality or splicing issues
• Reduced risk of carcass damage and premature belt failure
• Reduced total cost of ownership when compared to the S grade alternative
• The client was extremely satisfied with the performance outcomes from using ArmorShieldTM and plans to replace ROM conveyors with ArmorShieldTM belting across business