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State-of-the-Art Tunnel Kiln Goes into Operation in Höhr-Grenzhausen

Due to COVID-19 restrictions, the ceremo­nial lighting of the 96-m-long kiln took place under somewhat different circumstances, however. With around 80 representatives from all business divisions of the Steuler Group present, it was a rather small group that had the opportunity to witness the special event under strict hygiene regulations and usher in a new era of firing technology at Steuler.„In extraordinary times like these, it is important to remain confident and focus on the future. This investment serves to under­score our forward-looking approach“, is how Michael Steuler, Managing Director of Steuler Holding, and Ulf Frohne­berg, Managing Director of STEULER-KCH Materials summed things up.
The state-of-the-art high-performance tunnel kiln – which will create new jobs and increase the production capacity in Höhr-Grenzhausen by around 8000 t/a – has been in operation since 18 August 2020. With immediate effect, Steuler‘s Höhr-Grenzhausen and Breitscheid factories now have the kiln capacity to manufacture a total of 60 000 t of special refractory and acid-resistant bricks a year.
The new kiln will save up to EUR 500 000 in gas costs annually – while simul­tan­eous­ly increasing output. Thanks to its intelligent heat recovery system, the waste heat from the kiln operating at 1350 °C will be used for drying, heating the buildings and producing hot water. Because the kiln and ancillary facilities operate with such remarkable energy efficiency, the project was subsidised by the KfW (Credit Institute for Reconstruction). The huge investment was accompanied over the past 17 months by comprehensive civil engineering works along the disused railway tracks and costly adaptation of the infrastructure for operating the kiln: the preparation area, presses, storage areas and packing lines in Höhr-Grenzhausen had to be thoroughly modernised and scaled up in order to cope with the larger capacity of the new kiln.
The technicians from the kiln manufacturer Grün S.R.O./CZ were responsible for the installation and commissioning of the new kiln. As soon as the new kiln has reached its final firing temperature after around 8 days, its predecessor dating from 1951 can then be retired – it has only had to be shut down five times over the entire course of its service life. An efficient packing line including stretch-wrapping system will soon stand in its place and the raw material boxes are still to be converted in the next step.
The increased kiln output requires greater storage space, so an area of 7500 m2 is being created for order picking too (www.steuler.de).
In the next few days, a video with fascinating shots of the interior of the kiln will be posted on the company´s website. www.steuler-linings.de

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