Algoma Steel Considers Reviving 73-Year-Old Blast Furnace

Algoma Steel is contemplating the revival of its 73-year-old No. 6 blast furnace, a significant shift in its operational strategy. This consideration comes after the company’s permanent shutdown of the No. 7 blast furnace on January 18, which marked the company’s transition to electric arc furnaces (EAFs). The No. 6 furnace has remained in place as a backup, highlighting Algoma’s evolving approach to steel production.
Potential Reactivation of No. 6 Blast Furnace
During a recent investor conference call, CEO Rajat Marwah discussed the No. 6 blast furnace as an option if Algoma faces challenges in sourcing sufficient feedstock for its EAFs. Since its commissioning in 1953, the No. 6 has served as a historical pillar of steelmaking in Sault Ste. Marie.
Historical Context of the No. 6 Furnace
- Commissioned in 1953, replacing older furnaces.
- Superseded by No. 7 furnace in 1975, the largest blast furnace in the British Commonwealth at that time.
- Idled for over a decade, it was briefly restarted in 2008 after a $40 million rebuild.
Originally, this restart aimed to increase Algoma’s production capacity to four million saleable tons. However, due to economic fluctuations, the furnace was again put on hold shortly after.
Modern Steel Production Methods
Algoma is now heavily investing in EAF technology, which significantly reduces carbon emissions, with a goal of a 70% reduction, supported by $500 million in government financing. In addition to relying on scrap metal, Algoma is also considering using ore-based metallics, including direct reduced iron (DRI) and hot briquetted iron (HBI), to enhance production efficiency.
Market Dynamics and Pricing
Marwah emphasized the importance of sourcing scrap metal primarily from Canada, with some from the U.S. He noted that despite the stability in availability, the pricing remains dynamic. The market is influenced by various external factors, including tariffs and supply-demand discrepancies.
Future Strategies and Legal Challenges
Algoma’s financial strategy aims to improve profitability through scaling up EAF production and optimizing costs. Marwah expressed confidence in the company’s liquidity to navigate these changes. However, the company is currently engaged in legal disputes regarding certain supply agreements, citing the unforeseen tariff environment as a complicating factor.
In the dialogue with investors, he assured that they have valid defenses and legal remedies in place to address these challenges effectively.
| Aspect | Details |
|---|---|
| Furnace Commissioning | 1953 |
| Shutdown of No. 7 Furnace | January 18, 2023 |
| Government Financing | $500 million |
| Goal: Carbon Emission Reduction | 70% |
As Algoma Steel navigates these complex market conditions, the fate of its No. 6 blast furnace remains an integral component of its operational strategy and future production capacity.




