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EP 1 556 168 A1

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(43) Date of publication: 27.07.2005 Bulletin 2005/30 (21) Application number: 03735751.4 (22) Date of filing: 02.07.2003

(51) International Patent Classification (IPC)7: B02C 1/00, B02C 2/00, B02C 7/12, B02C 25/00 (86) International application number: PCT/FI2003/000535 (87) International publication number: WO 2004/004908 (15.01.2004 Gazette 2004/03)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 05.07.2002 FI 20021327 (71) Applicant: Metso Minerals (Tampere) Oy 33101 Tampere (FI)

(72) Inventors: Barscevicius, Paulo 18085-050 Sorocaba - SP (BR) Alves, Osmair Nunes, 18070-270 Sorocaba - SP (BR) Reggio, Alfredo Maia 04349-0000 SAO PAULO - SP (BR) Vesamäki, Kimmo, Kalevi 36200 KANGASALA (FI) Potila, Juha, Tapio 33950 PIRKKALA (FI) Satola, Esa, Pekka 33500 Tampere (FI) (74) Representative: Langenskiöld, Tord Karl Walter et al Oy Jalo Ant-Wuorinen Ab,Iso-Roobertinkatu 4-6 A 00120 Helsinki 00120 Helsinki (FI)