Backers Maschinenbau of Twist, Germany has been building sophisticated machines utilising starscreen technology to separate and recover valuable materials that would otherwise be wasted since 1989.
Some of the materials that can be successfully processed on Backers systems include: waste, pre-shredded waste wood, ash, railway ballast, mixed construction waste, building rubble, biomass, soil, soil with stone mixture, substitute fuel, soil, fluff, river gravel, fresh wood, shredded tyres, rock, industrial waste, track ballast, wood chips, blast furnace residues, gravel or crushed stone, coal, compost, clay soil, pipeline construction refuse, topsoil, renewable raw materials, recycled material, bark, slag, peat, rootstocks and root wood.
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Recovering valuable materials from industrial waste streams
People have been finding better ways to ’separate the wheat from the chaff’ for as long as humans have been growing and eating grain. Today, of course, the metaphor can be applied to many different situations where useful materials mixed with dirt, waste or other undesired contaminants need to be recovered economically.
Backers Maschinenbau of Twist, Germany has been building sophisticated machines utilising starscreen technology to separate and recover valuable materials that would otherwise be wasted since 1989.
Some of the materials that can be successfully processed on Backers systems include: waste, pre-shredded waste wood, ash, railway ballast, mixed construction waste, building rubble, biomass, soil, soil with stone mixture, substitute fuel, soil, fluff, river gravel, fresh wood, shredded tyres, rock, industrial waste, track ballast, wood chips, blast furnace residues, gravel or crushed stone, coal, compost, clay soil, pipeline construction refuse, topsoil, renewable raw materials, recycled material, bark, slag, peat, rootstocks and root wood.
Starscreen technology
The screening process of the ‘two fraction starscreen machine’ begins on the starscreen with the screen stars all rotating in one direction and loosening up the material. The fine screened material falls between the stars onto a collecting belt. This then conveys the screened material on a fine-grain belt to the discharge point.
Compact, reliable Perkins power
Several of Backers most popular machines depend on reliable, compact Perkins engines to supply the necessary power while meeting EU Stage V emission standards. “When building starscreen machines with two fractions, we rely on Perkins engines, among others,” explains Christian Backers, managing director of Backers. “We were particularly convinced by the compact design of the Perkins® 904 and 1204 Series engines. In addition, the engines are robust and well suited for off-road use.”
Flexible recovery solutions
One of the popular Perkins powered machines is the Backers 2-hta starscreen which is available in both hook liftable and track-mobile configurations. The highly flexible two fraction machine has a 5.4 m2 screening area, a separation cut from 6/8 mm to 80 mm and a maximum throughput of 120 m3/h (with 16 mm screening).
The Backers 2-hta starscreen is powered by a compact, power-dense 4-cylinder Perkins® 904J-E36TA industrial open power unit (IOPU). Meeting Stage V emission standards, the IOPU delivers 74.5 kW while providing efficient, reliable power for the most demanding applications of the Backers 2-hta starscreen.
The larger Backers 2-ta starscreen machine is intended for use on construction sites and difficult terrain. It has an 8 m2 screening area, a separation cut from 6/8 to 80 mm and a maximum throughput of 200 m3/hr. The 2-ta starscreen can be track-mounted and manoeuvred on-site by wireless remote control. Typical applications include road construction, civil engineering, structural engineering, pipeline construction and dike construction.
The 18,000 kg 2-ta starscreen is powered by an efficient, 4-cylinder Perkins® 1204J-E44TTA IOPU meeting Stage V emission standards and producing 140 kW.
“We were particularly convinced by the compact design of the Perkins® 904 and 1204 Series engines. In addition, the engines are robust and well suited for off-road use.”
Christian Backers, managing director of Backers
Perkins® 904J-E36TA IOPU
- The Perkins® 904 Series IOPU gives you a complete power solution to meet EU Stage V, U.S. EPA Tier 4 Final and Japan 2014 (Tier 4 Final) emission standards.
- The choice of options, engine configurations and robust technology allows you to integrate the 904 range into your equipment with minimum re-engineering.
- The ECM and aftertreatment sensors have all been pre-installed in the IOPU package to save mounting on the machine chassis.
- The fuel filter with water in fuel sensor has also been mounted to the IOPU to make the low pressure fuel system installation quick and simple.
- Fuel consumption is optimised to match the operating cycles of a wide range of off-highway applications.
Perkins® 1204J-E44TTA IOPU
- The Perkins® 1204J, the 4 cylinder option for the 1200 Series,gives you a complete power solution that meets the latest EU Stage V/U.S. EPA Tier 4 Final emission standards.
- The choice of options, engine configurations and robust technology allows you to integrate the 1204 range into your equipment with minimum re-engineering.
- The innovative, compact and flexible design of the Perkins 1200 Series means it can be found in more than 800 different models of equipment.
- We have designed the Perkins 1204 range with optimised fuel consumption in mind, matching it to the operating cycles of a wide range of equipment and applications.
- Your needs are our top priority, which is why we provide more tailored technology for OEMs than anyone else. Working closely with OEMs, we have developed the 1204 range with hundreds of variables so that it easily fits into your machine.
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Product overview
The screening process of the ‘two fraction starscreen machine’ begins on the starscreen with the screen stars all rotating in one direction and loosening up the material. The fine screened material falls between the stars onto a collecting belt. This then conveys the screened material on a fine-grain belt to the discharge point.
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