XR Shredder Provides Higher SRF Output with Same Electrical Demand

German Solid Recovered Fuel Firm Ups Output with UNTHA XR Waste Shredder

German waste derived fuel producer, Lober GmbH has invested in an UNTHA XR3000C waste shredder to optimise its SRF plant.

German waste derived fuel producer, Lober GmbH & Co. Abfallentsorgungs KG – has invested in an UNTHA XR3000C waste shredder to optimise its Solid Recovered Fuel (SRF) plant.

UNTHA explained that for  three generations Lober has handled the waste disposal for municipalities and businesses throughout the region, and in 2000 began producing SRF.

The company currently produces some 50,000 tonnes of SRF per annum from industrial waste at its Neunburg plant which is used combusted in cement kiln main burners.

However, as a growing business,  UNTHA said that Lober needed to increase the capacity of its existing production line whilst maintaining quality and particle size. Facing these requirements, it contacted the Austrian shredder specialist.

“An intensive analysis of our operating data revealed that our post shredders could process more if we were able to achieve an optimised particle size and a steadier throughput in our pre-shredder,” explained Lober’s operations manager, Mr Weig. “This would support our goal to increase capacity and, subsequently, our bottom line.” 

Weig added that with 15 years’ experience in running an SRF plant Lober is known to reliably manufacturing and delivering a consistently high quality fuel.

“We therefore had to make a very careful decision about the shredding technology we chose – uptime, machine robustness and particle precision were all crucial. If we installed the wrong shredder, the impact on our reputation could be catastrophic,” he continued.

Unconvinced that its existing shredding technology would stand up to the challenge, and Lober began talking to the team at UNTHA’s Austrian headquarters. It was claimed that the XR shredder could handle an array of tough materials, however bulky, with impressive throughputs yet minimal power consumption.

UNTHA’s sales manager Daniel Wresnik offered the waste shredder to the Neunberg plant on a six month trial, where it had to tackle a variety of materials.

The machine handled 19 tonnes of material per hour to produce a homogenous 120 mm particle. But according to UNTHA it was also the machine’s efficiency which pleased Lober.

“We were very impressed with the low electrical power consumption of the XR, which measured just 105kWh even with such high capacity,” said company owner, Mr Lober.

“Whilst the XR has the same sized motor as our previous machine, we now have a bigger shredder with higher throughputs, but we haven’t had to invest in a new power line or incur increased energy costs. This new technology is better for the environment too,” he continued.

UNTHA’s technical director Christian Lanner added that when the company tackles a project it has to consider how to satisfy a client’s specific requirements.

“In this instance, the brief was to ensure high throughputs with minimal operational disruption and no machine downtime,” he said.


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