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Press Release
September 2010
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New dryer technology at Goerg & Schneider supplied by KELLER HCW
[September 2010] The company Goerg & Schneider invested for the future with KELLER HCW.
The machinery and dryer technology for the refractory production were modified at their headquarters in Boden (Germany). The new slug cutter as well as the new dryer plant were supplied by KELLER HCW from Ibbenbüren-Laggenbeck.
The slug cutter cuts accurately sized slugs with an output of 32 cuts/min slugs which are then lined up in the outlet of the cutter via an additional grouping conveyor.
Furthermore, it cuts low maintenance slugs from a continuously transported column, in freely selectable cutting lengths, by means of cutting knives in the so-called "pince-nez cut". A measuring roller equipped with an absolute encoder guarantees that the slug lengths are cut accurately to size.
As the cutter is integrated into the existing wet side concept, the pre-existing KELLER HCW setting machine was also equipped with the new Simatic S7 as well as the latest safety technology.
The newly installed "Paraflow" dryer complies with all requirements in regard to energy efficiency and output.
The foundation for this new plant was laid on January 4, 2010 and by April 20, 2010 commissioning of the dryer could be started.
This was only possible because of the very good cooperation between Goerg & Schneider and KELLER HCW.
The plant is designed as a tunnel dryer with two flow tunnels. In order to maintain the drying climate each tunnel is equipped with inlet and outlet doors.
The circulation required for drying the refractory is effected in each tunnel and circulation area via an axial fan installed in the intermediate ceiling.
The dry air is blown and circulated between the products via gaps in the intermediate ceiling. A hot air connection feeds waste exhaust air from the kiln in order to supply the required drying energy to the dryer. Additional energy required for drying the product can be fed via an individually controlled burner to the hot air connection. However, in practice it will only rarely be used as the kiln supplies sufficient exhaust air which would otherwise be exhausted unused.
The dryer is separated into 3 climate zones per tunnel according to the drying characteristics of the refractory. The saturated wet air is exhausted from the dryer by means of an axial fan installed in the wet air chimney.
The regulation of the supply air and exhaust air flows are effected via control valves operated by electric motors installed in the ducting and via the speed of the wet air fans. Measuring devices for pressure, humidity and temperature guarantee an air and temperature delivery in the drying process exactly suited to the product.
The permanent control of the consumption and status situation together with the hot air connection to the kiln enables an energy optimisation of the drying of the refractory. Therefore an energy optimized process fitted to the product was finally created by means of the hot air connection between kiln and dryer.
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Picture 7:
Gerd Mößner (branch manager refractory), Hartmut Goerg (Managing Director Goerg & Schneider), Ulrich Hagemann (Sales Director KELLER HCW) (f.l.)
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