According to thyssenkrupp Steel, the planned work will refurbish central cooling systems and the lower refractory lining. Cooling components will be replaced, refractory material renewed and additional copper cooling elements installed. Maintenance will also cover auxiliary gas-cleaning and slag-granulation systems.
MetalMate summary of the linked evidenceCommercial context
Analysis: The temporary removal of a blast furnace rated at about 12,000 metric tons per day represents a material short-term maintenance event. The work is intended to improve technical availability and support reliable hot-metal production over the coming years, although the operational benefits will only become clear after restart.
MetalMate analysis- Planned outage duration: approximately six weeks, according to thyssenkrupp Steel.
- Daily hot-metal output: approximately 12,000 metric tons per day, according to the company.
- Main scope: central cooling systems and refractory lining in the furnace’s lower section.
- Technical work: replacement of cooling components, refractory renewal and installation of additional copper cooling elements.
- Auxiliary maintenance: gas-cleaning and slag-granulation systems.
Watch for confirmation of the restart following the approximate six-week maintenance window and evidence that the refurbishment delivers the intended improvement in availability and operating reliability.
Source & methodology +
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- Article status
- Updated · Version 2
- Source date
- Not supplied
- MetalMate publication
- 29 September 2026
- Verification
- Automated evidence checks; not human reviewed
thyssenkrupp Steel startet Teilsanierung am Hochofen Schwelgern 2 — thyssenkrupp Steel
MetalMate provides an English summary; consult the original wording.
thyssenkrupp Steel Launches Partial Refurbishment of the Schwelgern 2 Blast Furnace — thyssenkrupp Steel
MetalMate provides an English summary; consult the original wording.

