Page 75 - Hub-4 Magazine Issue 65
P. 75

 Recycling
   Recycled aggregates consist of 6F5 crushed hardcore, MOT type 1, crushed concrete types 2
As well as dealing with domestic and commercial waste, at the very heart of its business Simpsons proudly supports the government’s environmental policy of promoting recycled aggregates as a cost effective alternative to quarried aggregates (which also reduces the amount of waste going to landfill). Materials for recycling are selected at the waste transfer station, or at demolition sites and other groundwork projects. The materials are then separated, crushed, screened, and stockpiled on site for sale.
The wash-bear® has fitted in with Simpsons’ existing crushing and screening plant
Virtually 100% material separation
In addition to its process efficiency, which ensures almost 100% separation of contaminants and mineral fractions, the wash-bear® also scores thanks to its high levels of process effectiveness. This results from the economical handling of the resources to be used through the robust, maintenance-free design of the system technology. The closed system consumes whatever water adheres to the discharged mineral meaning that in a 10-hour shift, 4-8m3 is used in practice, whereby the inlet is controlled automatically by floats. This technique
The recycled aggregates can be delivered
or smaller amounts collected at site, and
consist of 6F5 crushed hardcore, MOT
type 1, crushed concrete types 2 and 3, road planings, screened / unscreened top soil, recycled sand, building and rockery stone, bio-mass woodchip and wood chip as well as other recyclable materials. In addition to waste and aggregates, Simpsons has developed a specialism in the handling, processing and recycling metal, which along with its other services, is provided to customers in and around the M25 and Home Counties with full compliance with the Environmental Protection Act and hold both COTC and WAMITAB status.
New solution delivers more recycling
As part of Simpsons’ drive to recycle more material, produce a cleaner recycled aggregate and ensure the very minimum of waste is sent to landfill, the company sought a new solution that would enable the more efficient breaking down of materials into separate (and re-saleable) fractions. To this end, Simpsons approached Barry O’Regan of the Orba Group Ltd. London head quartered, but covering the whole of the UK and Ireland, Orba Group Ltd specialises in the supply of machinery solutions for recycling, construction, demolition, and waste management as well as providing bespoke solutions for these industries. The company is also the official UK/Ireland dealer for wash-bear® machinery, manufactured by Moerschen GmbH, with the equipment being German designed and engineered and built to the highest quality.
The wash-bear® was seen as the ideal solution for Simpsons’ requirements as it has been designed to service businesses through the use of highly efficient technology for separating lightweight materials from building rubble and other material. The wash-bear® works according to the proven floating- sinking principle, reliably and cleanly separating light materials such as wood, artificial and insulating materials from the minerals. This means that all mineral substances can be cleaned, but vitally all RCL building materials.
avoids the build-up of chemicals in the eluate. Any water used is absorbed into the basic moisture of the RC material with what comes out, with regard to the chemical composition, being at most, what was discarded by the rubble in the system.
Economy of the system continues with energy expenditure, which at 8-15kW/h during operation is significantly lower than an air sieve with a similar performance. Nevertheless, the drive power is enough to start the wash-bear® in full load. Thanks to its compact dimensions, the wash-bear® can be easily integrated into the overall process chain even on narrow sites. By using (the optional) ‘clean extension’, the wash-bear® becomes a powerful wet-processing system for the removal of fine fractions, e.g. when washing track ballast. The current generation of systems is available as wash-bear® 2.0 in three models, which are designated as ‘S, L, XL’ depending on size. Their hourly throughput rates range between 100 t/h and 190 t/h - depending on the input. All types are designed with a mobile lift hook for easy transport.
More separation means more for resale
Despite only being recently installed at Simpsons waste transfer station, the wash-bear® has already proved to be a highly efficient mobile piece of equipment for separating lightweight materials from building rubble and waste with extremely low operating and maintenance costs. This has resulted in Simpsons continuing to ensure that where possible all materials are recycled, more recycled aggregates being available for resale, and vitally, as little as possible is landfilled. “Simpsons came to us wanting to ensure that they continue recycle all the commercial and domestic waste they handle. The wash-bear® has fitted in seamlessly with Simpsons’ recycling system and I am proud of the part it is playing in maintaining Simpsons’ pledge to its customers that where possible, all materials’ handled are recycled, with the bare minimum being sent to landfill,” commented Orba Group managing director Barry O’Regan.
The new system from the Orba Group provides a highly efficient mobile piece of equipment for separating lightweight materials from building rubble and waste. Simpsons aim to ensure that all materials handled are recycled with the bare minimum being sent to landfill
  www.hub-4.com Nov/Dec 20 - Issue 65
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