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Boral Recycling use an Aran Modumix mixing plant to deliver pavement construction materials to Sydney projects with a solid respect for the environment.
Western Sydney is the recycling center for Australia’s largest city. Receiving many thousands of tonnes each day of old construction materials from building and pavement demolition sites, Boral will crush, screen and stockpile materials for reuse. These processed materials are later delivered to new projects either as fill or stabilised road construction material. The Aran mixing plant is a key to the success of this business.
Road construction specifications require very accurate dosing of binders and water to produce a constructed pavement with consistent density and strength. This can be challenging to achieve with recycled materials containing residual cement. Boral elected to install an accurate, high production mixing plant in 2008 to service the rapidly growing need for recycled material in Sydney and beyond. Considerably larger that what was needed in 2008, Boral identified the growth in Sydney would demand a high production plant for the future and purchased a second hand Aran Modumix II modular mixing plant. With a proven history of mixing large volumes of material very accurately, this was the perfect choice for Boral. In years prior, this mixing plant, along with an identical twin plant, produced over one million cubic yards of Roller Compacted Concrete for a dam in South Carolina, USA. Prior to installing the plant in Sydney, Aran refurbished the machine, including the installation of a new control system and a third silo and metering system.
I recently visited this machine just after its 13th year, with 7 years operating at Boral’s facility in Sydney. This machine is operating every day, producing material at rates of 420 cubic meters per hour or greater, with binder contents of 0-11 percent. The accuracy of the cement metering is an impressive 0.033% variance across milestone targets. This is easily within the specified guidelines and a good example of the Aran SiloFeed system to perform on a 13 year old machine. This accuracy gives clients confidence they are receiving a quality product and Boral the confidence that they are not only producing a product on specification, but doing so efficiently.
High production rates is not only geared for processing orders for material quickly, it also allows Boral to charge trucks very rapidly and maintain a clear traffic flow around the plant. Speed and efficiency helps this site run smoothly and successfully.
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