North Nippon Muroran Works
operatingBF–BOF Integrated route · Muroran, Asia Pacific, Japan
North Nippon Muroran Works makes steel by the integrated route: iron ore is smelted into liquid hot metal in a blast furnace, then refined into crude steel in a basic oxygen furnace. Alongside the ore-based route, the plant runs an electric arc furnace that melts scrap and other metallics. The liquid steel is solidified into semi-finished shapes by continuous casting. The plant has a crude steel capacity of about 2.2 million tonnes per year.
Process Route
Timeline
Operating since 1909
Emissions
2025
2.11 Mt CO₂e
1.38 t CO₂e per tonne of steel
Typical BF-BOF route: 1.8–2.0 t/t
Modelled estimate (Climate TRACE), not reported data. Methodology
Capacity (ttpa)
Crude Steel
2,200
EAF
700
BOF
1,500
Blast Furnace
1,240
Production
Crude steelproduction, GEM-compiled (Global Iron & Steel Tracker). Dashed line shows nominal capacity.
Iron Units
Steel Units
Inputs & Energy
Power in-plant power generation, also provides power generated via by-product gas and coal to Hokkaido Electric Power
Iron ore Imported from Australia, Brazil and India
Met coal Australia and Canada
Steel Products
wire, bar
Ownership
Owner Nippon Steel Corp
Parent Nippon Steel Corp [100.0%]
Workforce 1,026 employees
Country Context
Japan crude steel production (USGS). Plant line shows nominal capacity, not output.
Learn the processes this plant uses
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Location
Muroran
Asia Pacific
Japan
42.3419°, 140.9978°
At a Glance
- Route
- BF–BOF Integrated
- Crude steel capacity
- 2,200 ttpa
- Commissioned
- 1909
- Products
- Semi-finished, finished rolled
- Certifications
- 1 recorded