(19)

(11)

EP 3 433 342 A1

(12)

(43) Date of publication: 30.01.2019 Bulletin 2019/05 (21) Application number: 17717207.9 (22) Date of filing: 17.03.2017

(51) International Patent Classification (IPC):  C10L 9/08(2006.01) C01B 32/336(2017.01) C01B 32/324(2017.01) (86) International application number: PCT/FI2017/050184 (87) International publication number: WO 2017/162914 (28.09.2017 Gazette 2017/39)

(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 Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 23.03.2016 FI 20165246 (71) Applicant: Valmet Technologies Oy 02150 Espoo (FI)	(72) Inventor: HILLI, Tuomo 02150 Espoo (FI) (74) Representative: Kolster Oy Ab  (Salmisaarenaukio 1) P.O. Box 204 00181 Helsinki 00181 Helsinki (FI)