(19)

(11)

EP 2 376 229 A1

(12)

(43) Date of publication: 19.10.2011 Bulletin 2011/42 (21) Application number: 09838180.9 (22) Date of filing: 21.12.2009

(51) International Patent Classification (IPC):  B02C 13/286(2006.01) B02C 13/22(2006.01) (86) International application number: PCT/FI2009/051024 (87) International publication number: WO 2010/081933 (22.07.2010 Gazette 2010/29)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 14.01.2009 FI 20090011 (71) Applicant: Fractivator OY 37800 Toijala (FI)	(72) Inventor: VIRTANEN, Pentti FI-37630 Valkeakoski (FI) (74) Representative: Öhman, Ann-Marie  Kaivokatu 15 B 23 20520 Turku 20520 Turku (FI)