Page 58 - Hub-4 Magazine Issue 80

Quarrying News
Stradacon Penna uses McLanahan’s Modular Wash Plant and Scrubbing System to help Recycle C&D Waste for reuse
Stradacon Penna is a quarry operation located in Townsville, Queensland, Australia, that specializes in the production of high-quality road base and embankment materials, aggregate, recycled concrete products, and specialty sands for the civil construction industry, sporting fields and bio-retention basins. With owners David and Vivienne Penna at the helm and their children Natalie and Jarl involved in the day-to-day operations, Stradacon Penna is a true family-orientated business.
CHALLENGE
David Penna prides his quarry on being a clean, healthy environment. He has carefully and thoughtfully planned his site with sustainability in mind, and the citrus and other tropical fruit-bearing trees that line the entrance to his quarry are a testament to his efforts.
Part of Penna’s vision for a clean, healthy environment involves minimizing dust generation on site.
“We’re very keen to get dust out of our lives, to get dust off our site,” said Penna. “It causes mechanical issues; it causes health issues, and it causes productivity issues.”
To reduce the dust generated by dry screening their crushed aggregates, Penna reached out to Lincom, McLanahan’s dealer for aggregate wet processing equipment in Australia, about adding a wash plant for size classification.
SOLUTION
Lincom recommended McLanahan’s UltraWASH Modular Wash Plant, which can produce up to three clean aggregate products and up to two washed sand products.
Penna said he was impressed with the strength of the design of the McLanahan UltraWASH as well as McLanahan’s history and family values. The modularity of the plant, combined with Penna’s meticulous planning ahead of the plant’s arrival, allowed for a quick and easy setup on site.
Another part of Penna’s larger vision of sustainability involves recycling construction and demolition waste materials for reuse as construction aggregates.
“Dilution is the solution to pollution,” Penna said, citing a well-known adage about the process of adding water to decrease the concentration of a contaminant.
He added a McLanahan modular scrubbing system consisting primarily of a McLanahan Coarse Material Screw Washer to his new wash plant. The Coarse Material Screw Washer accepts the C&D waste after it has been crushed and removes the lightweight debris and organic material from the aggregate before it is processed in the UltraWASH.
RESULTS
With the McLanahan modular scrubbing system, Stradacon Penna is reducing the amount of soft plastics, timbers and papers that come in with the crushed C&D waste feed. Penna said about 99.9% of the rubbish is removed and sent to the local tip. The aggregate product is then dewatered with a McLanahan Dewatering Screen and presented to the McLanahan UltraWASH Modular Wash Plant to be
added in with the naturally produced aggregates.
“It’s been a real game-changer for us,” Penna said. “We are now producing aggregates and sands that are 10% derived from recycled concrete from demolition waste. We are
| p58 |
www.hub-4.com May/June - Issue 80