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CSN Volta Redonda steel plant

operating

Volta Redonda, Central & South America, Brazil

ISO 14001
GEM wiki

Process Route

BFBOFEAF

Timeline

Operating since 1946

Emissions

2025

8.00 Mt CO₂e

1.79 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

6,251

EAF

500

BOF

5,751

Blast Furnace

5,580

Sinter

6,930

Coking

1,680

Production

Crude steelproduction, GEM-compiled (Global Iron & Steel Tracker). Dashed line shows nominal capacity.

Iron Units

BF
BF 2operating
1,680 ttpa1653 m³ · relined 2016Arthur McKeewiki
BF
BF 3operating
3,900 ttpa4247 m³ · relined 2019Siemens VAI; Primetals Technologies; Saint-Gobain (parts)wiki

Steel Units

EAF
unknown EAF (1)operating
500 ttpa56 twiki
BOF
unknown BOF (1)operating
1,917 ttpawiki
BOF
unknown BOF (2)operating
1,917 ttpawiki
BOF
unknown BOF (3)operating
1,917 ttpawiki

Inputs & Energy

Power CSN owns two hydroelectric plants (Ita and Igarapava) and a thermoelectric plant in Volta Redondo

Iron ore Casa de Pedra mine, Congonhas, Brazil

Steel Products

shapes, galvanized, wire rod, rebar, cold rolled, hot rolled, slab

Ownership

Owner Companhia Siderúrgica Nacional SA

Parent Companhia Siderúrgica Nacional SA [100.0%]

Workforce 15,518 employees

Country Context

Brazil crude steel production (USGS). Plant line shows nominal capacity, not output.

Explore

Plant data sourced from the Global Iron & Steel Tracker (March 2026), Global Energy Monitor. Licensed under CC BY 4.0.

Production data: USGS Minerals Yearbook — Raw Steel: World Production by Country or Locality (2019 edition; 2022 and 2023 early release tables). U.S. Geological Survey, public domain. EAF/BOF splits: USGS Minerals Yearbook (2023 estimates).

Facility emissions estimates from Climate TRACE. Licensed under CC BY 4.0.