(19)

(11)

EP 2 534 100 A1

(12)

(43) Date of publication: 19.12.2012 Bulletin 2012/51 (21) Application number: 11706954.2 (22) Date of filing: 14.02.2011

(51) International Patent Classification (IPC):  C01B 33/037(2006.01) (86) International application number: PCT/NO2011/000053 (87) International publication number: WO 2011/099870 (18.08.2011 Gazette 2011/33)

(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: 12.02.2010 GB 201002448 (71) Applicant: Metallkraft AS 4617 Kristiansand (NO)	(72) Inventors: HENRIKSEN, Knut N-4640 Søgne (NO) RINGDALEN, Eli N-8610 Grubhei (NO) SOLHEIM, Ingeborg N-7050 Trondheim (NO) (74) Representative: Onsagers AS  Munkedamsveien 35 P.O. Box 1813 Vika 0123 Oslo 0123 Oslo (NO)