Big Oversized Blender – A ‘megablender’ known as ‘Bob the Big Oversized Blender’ will be built in Victoria to reprocess hazardous waste into a fuel that can be used in cement kilns. Up to 7,000 tonnes of hazardous waste will be processed each year in the machine that separates it into different material streams for recycling and reprocessing.130 The unit consists of a series of augers which shred material before it enters the blender itself, which is a fast spinning propeller over a shear plate. Magnetic conveyors pull out metal for washing and recovery. None of the components are new technology but combining them in a single machine is unique.131
Figure 14 BOB the Big Oversized Blender132
There are a number of technologies for processing and treating waste tyres. These predominantly involve shredding or mechanical grinding of whole or split tyres to prepare the rubber for recycling or reuse. Others are more complex and include devulcansation, microwave technology and some other physico-chemical processes. Tyres are also currently used a fuel for cement furnaces.