(19)
(11) EP 4 540 425 A1

(12)

(43) Date of publication:
23.04.2025 Bulletin 2025/17

(21) Application number: 23735930.2

(22) Date of filing: 07.06.2023
(51) International Patent Classification (IPC): 
C21B 13/00(2006.01)
C22B 5/10(2006.01)
F27B 1/21(2006.01)
F27D 3/16(2006.01)
C21C 5/46(2006.01)
C21C 5/52(2006.01)
 C21B 13/02(2006.01)
F27B 1/20(2006.01)
F27D 3/14(2006.01)
F27D 3/18(2006.01)
C21C 5/48(2006.01)
(52) Cooperative Patent Classification (CPC):
C21C 5/527; C21C 5/4613; C21C 5/48; C21B 13/023; C21B 13/0006; C22B 5/10
(86) International application number:
PCT/US2023/024715
(87) International publication number:
WO 2023/244479 (21.12.2023 Gazette 2023/51)
(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:
KH MA MD TN

(30) Priority: 15.06.2022 US 202263352492 P
01.06.2023 US 202318204683

(71) Applicant: Nucor Corporation
Charlotte, NC 28211 (US)

(72) Inventor:
  • DRY, Rodney James
    Charlotte, North Carolina 28211 (US)

(74) Representative: Marks & Clerk LLP 
15 Fetter Lane
London EC4A 1BW
London EC4A 1BW (GB)

   


(54) A DIRECT BATH SMELTING PROCESS WITH MANAGEMENT OF PERIPHERAL COLD ZONES AT THE METAL-SLAG INTERFACE