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Shredder gets through untreated landfill material

Chalk River Laboratories, of Ontario, Canada, part of Canadian Nuclear Laboratories (CNL), is using a Urraco 75 DK mobile shredder from Lindner on its landfill site for non-contaminated waste.

The shredder is crushing wood, plastics and light materials from demolition, renovation and building work on the 40sq km site, mainly in the form of pallets, construction timber, trees and brush, asphalt, metal containers, plastic pipes and furniture.

Apart from significantly reducing the volume of waste, the Urraco also prepares the wood fraction into a compactable bulk product that can be mixed with cover material and spread over the working face of the landfill, mitigating the need to bring in earth especially for this purpose.

The Urraco is a versatile, slow-running two-shaft machine for the pre-crushing of untreated material that also contains contaminants. CNL operates the 75 DK with a diesel engine and track system, and a nominal shredding capacity of up to 40 tonnes an hour of wood.

James Betts, section head waste management operations at CNL, said: “We are currently shredding more than 10,000cu m a year, but this is likely to multiply quickly as we expand our work. The mobile self-driving Urraco meets our requirements down to a tee. Its shredding performance gives us the necessary reserves, its track system provides mobility and its rugged construction means a minimum of maintenance and repair work.”

The CNL shredder comes with robust HW tool shafts for final particle sizes of 200-500mm. As standard, the Urraco is equipped with a contaminant recognition system, which responds within fractions of a second. Together with the reversing function, it protects the tools from damage and significantly reduces wear and tear on the shafts and stress on the drive system.

Also part of the standard equipment is the discharge belt, the height of which can be steplessly adjusted by remote control through the hydraulic system. At CNL, a magnet is positioned above it, which extracts nails and other metal components for subsequent recycling.

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