(19)

(11)

EP 2 155 396 A1

(12)

(43) Date of publication: 24.02.2010 Bulletin 2010/08 (21) Application number: 08737447.6 (22) Date of filing: 15.04.2008

(51) International Patent Classification (IPC):  B02C 17/18(2006.01) B02C 21/00(2006.01) (86) International application number: PCT/IB2008/000916 (87) International publication number: WO 2008/129384 (30.10.2008 Gazette 2008/44)

(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 MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 19.04.2007 IT MO20070138 (71) Applicant: Siti-B & T Group S.p.a. 41043 Formigine (IT)	(72) Inventor: TAROZZI, Fausto I-41043 Formigine (IT) (74) Representative: Pajola, Stefano  Maroscia & Associati Srl Contrà Porti, 21 36100 Vicenza 36100 Vicenza (IT)