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(11)

EP 2 553 166 A1

(12)

(43) Date of publication: 06.02.2013 Bulletin 2013/06 (21) Application number: 11763147.3 (22) Date of filing: 29.03.2011

(51) International Patent Classification (IPC):  D21C 11/12(2006.01) D21C 11/02(2006.01) D21C 11/06(2006.01) (86) International application number: PCT/SE2011/050350 (87) International publication number: WO 2011/123034 (06.10.2011 Gazette 2011/40)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR (30) Priority: 30.03.2010 SE 1050299 (71) Applicant: Chemrec Aktiebolag 114 31 Stockholm (SE)	(72) Inventors: LANDÄLV, Ingvar S-196 31 Kungsängen (SE) FURUSJÖ, Erik S-112 64 Stockholm (SE) STARE, Ragnar S-132 34 Saltsjö-boo (SE) (74) Representative: Johansson, Lars E. et al P.O. Box 138 683 23 Hagfors 683 23 Hagfors (SE)