TUNNEL KILN FOR FIRING POROUS CERAMIC MATERIAL

Title:

TUNNEL KILN FOR FIRING POROUS CERAMIC MATERIAL

Document Type and Number:

WIPO Patent Application WO/2012/128172

Kind Code:

A1

Abstract:

Provided is a tunnel kiln for firing porous ceramic material that can fire porous ceramic material containing an organic binder without causing cracking, without the need for nitrogen gas, and in a shorter amount of time than conventional firing. The tunnel kiln for firing porous ceramic material is provided with a preheating zone (1), a firing zone (2), and a cooling zone (3), and the porous ceramic material is loaded onto a wheeled platform (7) and fired as it travels inside a furnace. A thermal storage regenerating type burner (10) is used as a heating means for the firing zone (2), and the low oxygen concentration exhaust gas exhausted from the thermal storage regenerating type burner (10) is returned via an exhaust gas return line (14) and forced into the preheating zone (1). A combustion device (17) that consumes the oxygen in the exhaust gas so as to reduce the oxygen concentration therein may be provided on the exhaust gas return line (14).

Inventors:

MIYATA JOTARO (JP)
IHARA CHIKASHI (JP)
YASUE TAKASHI (JP)

Application Number:

PCT/JP2012/056676

Publication Date:

September 27, 2012

Filing Date:

March 15, 2012

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)
MIYATA JOTARO (JP)
IHARA CHIKASHI (JP)
YASUE TAKASHI (JP)

International Classes:

F27B9/04; F23C13/00; F23L15/02; F27B9/02; F27B9/12; F27B9/26

Domestic Patent References:

WO2005047207A1

2005-05-26

Foreign References:

JP2000205754A	2000-07-28
JPS55144474A	1980-11-11
JP2007001843A	2007-01-11
JP2001527202A	2001-12-25
JP2001525531A	2001-12-11

Other References: