Mining OTR Tyre Solutions: Complete Waste Management for Mine Sites

By:     Conor Murphy

Mining OTR Tyre Solutions are a genuine operational necessity at large-scale extraction sites, where the scale and remoteness of operations combine to create one of the most challenging tyre waste problems in the world. Ultra-class haul truck tyres used in large open-pit mines, including those operating in Australian iron ore and coal operations, South African platinum and chrome mines, Chilean copper operations, and Canadian oil sands, can measure 4 metres in diameter, weigh over 5 tonnes each, and contain more than 2 tonnes of high-grade natural rubber.

A single large mining haul truck runs on six of these tyres; a fleet of fifty haul trucks at a large open-pit mine represents 300 giant OTR tyres in service at any given time, with each tyre lasting perhaps two to five years depending on loading, haul road conditions, and maintenance.

The scale of the OTR tyre waste problem at mining sites is compounded by the remoteness of many mining operations. A copper mine in the Chilean Atacama Desert, an iron ore operation in the Pilbara region of Western Australia, or a coal mine in remote Queensland is typically hundreds of kilometres from the nearest urban centre and potentially thousands of kilometres from a tyre processing facility equipped to handle ultra-class OTR waste.

The economics of transporting whole OTR tyres over these distances to a processing facility are almost invariably prohibitive; the transportation cost exceeds any processing value in the tyre. The consequence, at many mining operations globally, has been the accumulation of OTR tyre stockpiles on or near the mine site, creating fire risk, environmental liability, and regulatory compliance problems that grow larger each year as the stockpile grows.

Gradeall International manufactures OTR tyre processing equipment specifically designed for mining site deployment. The OTR tyre sidewall cutter, OTR tyre splitter, and the broader tyre recycling equipment range enable on-site processing of mining OTR tyres from their unwieldy whole-tyre dimensions into sections and pieces that can be transported economically for onward processing or used in civil engineering applications on or near the mine site. With nearly 40 years of manufacturing experience and equipment operating in over 100 countries, including major mining jurisdictions, Gradeall understands the specific requirements of mine site OTR tyre management.

Mining OTR Tyre Solutions: Understanding Mine Site OTR Tyre Types

Different mining operations generate different OTR tyre streams, and equipment selection must match the specific tyre types encountered at each site.

Ultra-class haul truck tyres. The largest OTR tyres in the world are used on ultra-class mining dump trucks from Caterpillar (797 series), Komatsu (930E series), and Liebherr (T 284). These tyres, with diameters of 3.7 to 4.0 metres and weights of 4 to 5.5 tonnes each, require the most powerful OTR processing equipment available. Gradeall’s OTR tyre sidewall cutter handles these extreme dimensions; the OTR tyre splitter splits the OTR tyre body into manageable sections after sidewall removal.

Standard OTR haul truck tyres. Smaller mining haul trucks, including the Caterpillar 789 and 793 series and Komatsu 730E, run on proportionally smaller but still very large OTR tyres. These tyres, typically 55/80 R63 or similar sizes, are still far beyond the capacity of standard tyre shredding equipment; dedicated OTR processing capability is required.

Loader and dozer tyres. Wheel loaders (Caterpillar 990, Komatsu WA1200, Liebherr L586) and scrapers run on tyres smaller than haul truck OTR sizes but still substantially larger than any road vehicle tyre. These represent the mid-range of mining OTR waste and are processed by Gradeall’s OTR equipment alongside haul truck tyres.

Underground mining tyres. Underground mining operations run on smaller load-haul-dump (LHD) vehicles and underground haul trucks with tyres smaller than surface mining OTR sizes. These can sometimes be processed by heavy-duty surface equipment; confirm specific tyre dimensions against equipment specifications before planning underground mining tyre disposal.

On-Site Processing: The Logical Solution

On-site processing of OTR tyres at the mine site is the only economically rational approach for most large remote mining operations. The alternative, transporting whole OTR tyres from a remote mine site to a distant processing facility, simply does not work financially at the tyre dimensions and distances involved.

Sidewall cutting: the first step. The OTR tyre sidewall cutter removes the sidewalls from the OTR tyre body, transforming the rigid structural ring shape into a flat body section that can be further processed. Sidewall removal is the essential first step in making OTR tyres manageable; whole OTR tyres cannot be transported economically, shredded by standard equipment, or used in most downstream applications.

Splitting: creating transportable sections. After sidewall removal, the OTR tyre splitter cuts the tyre body into sections of manageable size. Cut tyre sections pack into standard transport vehicles and shipping containers at densities orders of magnitude higher than whole OTR tyres; the economics of transporting cut sections to a processing facility off-site are entirely different from whole tyre transport.

Civil engineering uses on-site. Processed OTR tyre sections and whole baled car-sized tyres can be used in civil engineering applications on or near the mine site. Mine road embankment construction, retaining structures, drainage systems, and noise berms are all applications where tyre-derived materials have documented performance. Using processed mine tyres in on-site civil engineering closes the loop at the mine site itself, avoiding any transport to external processing facilities.

Equipment Specification for Mine Site Deployment

Mining site equipment deployment creates specific operational requirements beyond standard industrial installations.

Dust and contamination. Surface mining operations generate substantial airborne dust from haul road traffic, blasting, and material processing. Equipment in dusty mine site environments requires IP54 minimum electrical enclosure ratings and regular cleaning of electrical panels and ventilation points. Hydraulic filter change intervals should be shortened relative to clean-environment recommendations when equipment operates in high-dust conditions.

Remote maintenance and parts supply. A processing equipment breakdown at a remote mining site creates a significant operational problem; the nearest qualified engineer or parts supplier may be days away. Gradeall designs equipment for straightforward maintenance using standard tools and components; spare parts supply from Dungannon via air freight is available for critical components. Maintaining a specific recommended spare parts inventory on-site, including hydraulic seals, cutting blades, and electrical components most likely to require replacement, reduces breakdown downtime significantly.

Power supply. Remote mine sites may have diesel generator power rather than a grid supply; confirm the available power supply quality (voltage, frequency stability) against equipment requirements before installation. Voltage stabilisation may be needed where the generator supply quality is variable.

Extreme climate operation. Mining operations span the full range of global climate conditions, from -40°C Canadian winter to 50°C Middle Eastern summer and high-altitude Andean conditions. Hydraulic oil specification, electrical enclosure specification, and operational procedures must be matched to the specific climate at each mining site.

“Mining OTR tyre management is one of the most technically demanding equipment applications we address,” says Conor Murphy, Director of Gradeall International. “The tyre dimensions are extreme, the operational conditions are demanding, and the remoteness of many mine sites means that equipment reliability is critical. Our OTR processing equipment is designed for exactly these conditions and has operated successfully at mining sites across multiple continents.”

Contact Gradeall International for OTR tyre processing equipment for mine site deployment.

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