LOW-O2 TECHNOLOGY FOR THERMAL TREATMENT OF HIGH QUALITY POROUS CERAMICS

The key steps involved in debinding of extruded porous ceramics used to produce diesel particulate filter (DPF) honeycomb structures are considered, and the development and use of a novel debinding technology suitable for intermittent as well as continuous production kilns are explained. It is shown...

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Bibliographic Details
Published inCeramic Engineering and Science Proceedings pp. 89 - 92
Main Author Weber, H
Format Journal Article
LanguageEnglish
Published 2010
Subjects
Binder removal
Ceramics
Diesel
Endothermic reactions
Kilns
Materials handling
Pilot plants
Sintering (powder metallurgy)
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Summary:The key steps involved in debinding of extruded porous ceramics used to produce diesel particulate filter (DPF) honeycomb structures are considered, and the development and use of a novel debinding technology suitable for intermittent as well as continuous production kilns are explained. It is shown that the traditional debinding and sintering process for DPFs is not cost-effective due to the long kiln times as well as the extra handling required in transferring products to the sintering kiln. Research by Riedhammer has shown that the intensity of the partial exothermic and endothermic reactions occurring between 150 and 1500 C, and thus the amplitude of the thermal fluctuations in the component, can be reduced by reducing the oxygen content in the furnace atmosphere. Based on results of laboratory and pilot plant tests, the technology ("LOW-O2-Technology by Riedhammer") has been successfully used in periodic and continuous kilns for producing DPFs at several plants, providing higher yields and lower capital and energy costs.
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ISBN:9780470594711
0470594713
ISSN:0196-6219
DOI:10.1002/9780470944028.ch9