Canadian C&D recycler invests in shredder to make tire-derived aggregate

The CM Tire Recycling division of Columbus McKinnon Corporation (CM) has delivered a CM Chip Shredder to Halifax C&D Recycling in Halifax, Nova Scotia. Owned and operated by Dan and Lee Anne Chassie, Halifax C&D has two locations within the province to allow for easy drop-off of all construction and demolition (C&D) recyclables along with scrap tires. CM is based in Sarasota, Florida.

According to CM, in 2010 the Chassie’s were awarded the first and only contract by the provincial government of Nova Scotia’s Resource Recovery Fund Board (RRFB) to process all of the scrap tires for the province. The company subsequently selected a first-generation CM Hybrid Primary Shredder and External Classifier to downsize a wide variety of tire sizes down to a Type B TDA chip. The shredder is still in use supplying the larger Type B shredded tire material, CM reports.

Recently the company selected a CM chip shredder and external classifier to make a 2 inch (50 millimeter) nominal chip for use in local construction projects to provide lightweight fill. The smaller Type A clean cut chip meets the ASTM D 6270 (75 mm) standard, CM reports.

According to the manufacturer, the CM Chip Shredder is a secondary chipping shredder that works seamlessly behind either a CM Primary Shredder or any competitors’ machine. The CM patented Holman knife design and multistack knife configuration is designed to produce a high quality, cleane cut tire chip.

For the Halifax C&D application, whole tires will be fed directly to the CM hybrid primary shredder. Large shreds from the primary shredder will then feed to the chip shredder which will downsize and recirculate through the external classification system to make the 50 mm nominal chip. CM External Classifiers can be designed to meet any specification from as large as 100 mm down to 25 mm, the company says.