SPINEL-SILICON CARBIDE REFRACTORY COMPOSITIONS WITH HIGH CORROSION RESISTIVITY TO COAL SLAG AND MANUFACTURING METHOD THEREOF

WIPO Patent Application WO/2013/027890

A1

Disclosed is a refractory material for use in a coal gasifier reactor, which has strong resistance to corrosion by coal slag and can be used at high temperatures of 1500 ºC or higher. The disclosed refractory material composition includes: 100 parts by weight of a refractory material which is a mixture of spinel and silicon carbide at a mixing ratio of 25:75-75:25 based on weight; 1-15 parts by weight of submicron-sized α-alumina; and 1-10 parts by weight of boehmite. Since the disclosed refractory material does not contain chromium oxide, it is an environment-friendly refractory material that can be used at high temperatures of 1500 ºC or higher without evaporation of chromium oxide.

JP3811540	PRODUCTION OF SILICON CARBIDE FORMED BODY
WO/2008/061521	METHOD FOR PRODUCING AN OBJECT AT LEAST PARTLY WITH A SILICON CARBIDE STRUCTURE FROM A BLANK OF A CARBON-CONTAINING MATERIAL
JP2000248961	METHOD FOR PREVENTING RECEDING LOSS OF SILICA AND SILICON- CONTAINING MATERIAL IN COMBUSTION GAS ATMOSPHERE

KIM CHANG-SAM (KR)
PARK SANG WHAN (KR)
JEON SUNG WOON (KR)
LEE HAK MAN (KR)

PCT/KR2011/008187

February 28, 2013

October 31, 2011

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KOREA INST SCI & TECH (KR)
KIM CHANG-SAM (KR)
PARK SANG WHAN (KR)
JEON SUNG WOON (KR)
LEE HAK MAN (KR)

C04B35/565; C04B35/10; C04B35/567; C04B35/657

JPH06287057A	1994-10-11
JP2000178074A	2000-06-27
KR100508521B1	2005-08-17
KR100742862B1	2007-07-26

HALLA PATENT&LAW FIRM (949-3 Dogok-dong Gangnam-gu, Seoul 135-270, KR)

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