(19)

(11)

EP 3 443 265 A2

(12)

(88) Date of publication A3: 28.12.2017 (43) Date of publication: 20.02.2019 Bulletin 2019/08 (21) Application number: 17765247.6 (22) Date of filing: 13.04.2017

(51) International Patent Classification (IPC):  F22B 31/00(2006.01) F01K 23/06(2006.01) (86) International application number: PCT/IB2017/052136 (87) International publication number: WO 2017/179004 (19.10.2017 Gazette 2017/42)

(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: 15.04.2016 GB 201606637 (71) Applicant: Advance Carbon Technologies (Pty) Limited 8446 Kathu (ZA)	(72) Inventors: SMIT, Nico 0002 Pretoria (ZA) BEZUIDENHOUT, Frans 7600 Stellenbosch (ZA) (74) Representative: Abel & Imray  Westpoint Building James Street West Bath BA1 2DA Bath BA1 2DA (GB)