(19)

(11)

EP 1 032 472 A1

(12)

(43) Date of publication: 06.09.2000 Bulletin 2000/36 (21) Application number: 98956634.4 (22) Date of filing: 06.11.1998

(51) International Patent Classification (IPC)7: B03D 1/02, B03D 1/14, B03D 1/16 (86) International application number: PCT/US9823/636 (87) International publication number: WO 9924/169 (20.05.1999 Gazette 1999/20)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 08.11.1997 US 64961 P (71) Applicant: Cleveland-Cliffs Inc. Cleveland, OH 44114 (US)	(72) Inventor: PAANANEN, Allan, D. Ishpeming, MI 49849 (US) (74) Representative: Swindell & Pearson  48 Friar Gate Derby DE1 1GY Derby DE1 1GY (GB)