(19)
(11) EP 4 824 304 A1

(12)

(43) Date of publication:
21.10.2026 Bulletin 2026/43

(21) Application number: 24901872.2

(22) Date of filing: 13.12.2024
(51) International Patent Classification (IPC): 
C22B 3/10(2006.01)
C22B 11/00(2006.01)
C22B 3/22(2006.01)
(52) Cooperative Patent Classification (CPC):
Y02P 10/20; C22B 3/22; C22B 3/10; C22B 11/04; C22B 3/44
(86) International application number:
PCT/CA2024/051665
(87) International publication number:
WO 2025/123148 (19.06.2025 Gazette 2025/25)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 13.12.2023 US 202363609715 P

(71) Applicant: Excir Works Corp.
Calgary, AB T2E 7C3 (CA)

(72) Inventors:
  • SALIMI, Hiwa
    Calgary, Alberta T3B 3K3 (CA)
  • MORADI, Loghman
    Calgary, Alberta T3E 1Z5 (CA)
  • AXEN, Christian
    Calgary, Alberta T2J 1K5 (CA)
  • CONDRIC, Katarina
    Calgary, Alberta T3H 1A8 (CA)
  • NESDOLY, Shawna
    Calgary, Alberta T2T 3X4 (CA)
  • MACHADO, Daniela
    Calgary, Alberta T2E 7Z3 (CA)
  • MCGINNIS, Mark
    Calgary, Alberta T2J 1Y3 (CA)
  • MCGOWAN, Matt
    Calgary, Alberta T2E 7C3 (CA)
  • DERKACZ, Patrick Robert
    Calgary, Alberta T3E 1Z7 (CA)
  • RASMUSSEN, Steve
    Calgary, Alberta T2E 5H7 (CA)
  • OTGONDAVAA, Michidmaral
    Calgary, Alberta T3B 6H1 (CA)
  • MCAVOY, Jessica Marie
    Calgary, Alberta T2E 7C3 (CA)

(74) Representative: D Young & Co LLP 
3 Noble Street
London EC2V 7BQ
London EC2V 7BQ (GB)

   


(54) METHOD OF REFINING PRECIOUS METALS