Nippon Steel Muroran Cement Plant — Japan

Nippon Steel Muroran Cement Plant is a cement plant in Japan. Its listed capacity is 2,100,000 t of cement. Cement plants heat limestone to 1,400°C in rotary kilns — one of the hottest industrial processes — and must control temperature precisely across the entire kiln length. It is operated by Nippon Steel Cement Co Ltd. By capacity it ranks #9 among 22 cement plants in Japan. It emits about 805,980 t CO₂e a year from Climate TRACE. That is 0.49% of the CO₂e from the 105 facilities in Japan that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 6% above the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-32438822.

In context: how this facility compares

At 2,100,000 t of cement, Nippon Steel Muroran Cement Plant is around the median cement plant in Japan (1,900,000 t of cement). Subsector: cement. As cement plant, it requires high process heat (typically 800–1400°C) for its core industrial operations, supplied by boilers, furnaces or direct combustion. Cement plants heat limestone to 1,400°C in rotary kilns — one of the hottest industrial processes — and must control temperature precisely across the entire kiln length.

Capacity & CO₂-intensity comparison computed from Climate TRACE industrial facilities data; sector role based on engineering reference.

What 805,980 t CO₂e a year looks like

This facility's estimated annual CO₂e (Climate TRACE, modelled) in everyday equivalents from the US EPA Greenhouse Gas Equivalencies calculator:

Equivalencies: US EPA Greenhouse Gas Equivalencies. Emissions: Climate TRACE.

Capacity vs largest cement plants in Japan

Listed capacity (t of cement), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).

Operator

Operated by Nippon Steel Cement Co Ltd.

Local climate

Nippon Steel Muroran Cement Plant sits in a warm-summer humid continental climate zone (Köppen Dfb), at 42.4°N in the northern hemisphere.

Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

Site climate & environmental severity

This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1415 W/m² to ambient — roughly 1.09× the loss at a 20 °C reference. Reference-surface calculation at a 150 °C surface from WorldClim climate normals (ASTM C680 / ISO 12241) — an indicative per-climate comparison, not a measurement of this site’s specific equipment. Open method dataset: DOI 10.5281/zenodo.20787408 (CC BY 4.0).

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby sites

The #9 largest of 22 cement plants in Japan by listed capacity (Climate TRACE).

Nearby industrial sites

• North Nippon Muroran Works steel plant · Steel Plant · 2,191,669 t CO₂
• Idemitsu Hokkaido Refinery · Refinery · 1,644,550 t CO₂
• Taiheiyo Cement Kamiiso Cement Plant · Cement Plant · 843,082 t CO₂
• Hachinohe Cement Hachinohe Cement Plant · Cement Plant · 675,856 t CO₂

Location

Coordinates 42.35135, 140.99471. View on OpenStreetMap.

Frequently asked questions