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(11)

EP 4 204 364 A1

(12)

(43) Date of publication: 05.07.2023 Bulletin 2023/27 (21) Application number: 20951298.7 (22) Date of filing: 28.08.2020

(51) International Patent Classification (IPC):  C02F 1/24(2023.01) B03D 1/001(2006.01) B03D 1/14(2006.01) C02F 101/10(2006.01) C02F 103/16(2006.01) C02F 1/52(2023.01) B03D 1/02(2006.01) B03D 103/02(2006.01) C02F 103/10(2006.01) (52) Cooperative Patent Classification (CPC): B03D 1/02; B03D 1/001; B03D 1/14; B03D 2203/02; C02F 1/24; C02F 2103/10; C02F 1/5236; C02F 11/121; C02F 2001/007; Y02P 10/20 (86) International application number: PCT/FI2020/050559 (87) International publication number: WO 2022/043601 (03.03.2022 Gazette 2022/09)

(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: KH MA MD TN (71) Applicant: Metso Outotec Finland Oy 33900 Tampere (FI)	(72) Inventors: JANSSON, Kaj 33250 Tampere (FI) SAARI, Eija 02230 Espoo (FI) (74) Representative: Papula Oy  P.O. Box 981 00101 Helsinki 00101 Helsinki (FI)