(19)

(11)

EP 0 172 198 A1

(12)

(43) Date of publication: 26.02.1986 Bulletin 1986/09 (21) Application number: 85900957.0 (22) Date of filing: 22.02.1985

(51) International Patent Classification (IPC):  F23N 1/ 00( . ) (86) International application number: PCT/AU1985/000030 (87) International publication number: WO 1985/003761 (29.08.1985 Gazette 1985/19)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 22.02.1984 AU 19840003749 (71) Applicant: VULCAN AUSTRALIA LIMITED Bayswater, VIC 3153 (AU)	(72) Inventor: TRIHEY, John, Massey Ringwood, VIC 3134 (AU)