Circular Economy

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CSN Group is a leader in promoting the circular economy, integrating mining, steelmaking, and cement production to reuse co-products across its value chains. The company’s commitment to sustainability is further strengthened by its self-generated renewable energy and efficient logistics.

Production model based on circular economy

In the steel sector, blast furnace slag is reused by CSN Cimentos in cement manufacturing, and steel aggregate has various applications, such as paving, agricultural soil correction, and civil construction. Since 2023, non-hazardous waste has also been used to restore degraded areas in Pinheiral, Rio de Janeiro. The reuse of metallic scrap contributes to the circularity of steel.

The Circular Economy Working Group of the ESG Committee drives innovative solutions across the Company, while the Special Sales Department (GVS) is responsible for the commercialization of co-products, generating BRL 278.5 million in net revenue in 2025. As a result of these initiatives, 96% of the waste generated across the CSN Group was directed to sustainable treatment solutions.

Circular Economy

In 2025, the Special Sales Department (GVS) played a key role in reducing the volume of waste sent to landfills and promoting the recovery and reuse of materials, generating BRL 278.5 million in net revenue through the commercialization of co-products and recovered materials.

Revalora

Revalora, CSN Cimentos’ circular economy platform, transforms industrial and urban waste into alternative fuels, contributing to circularity and reducing CO₂ emissions. In 2025, the initiative resulted in the production of 73 thousand tonnes of alternative fuels, representing 46% self-sufficiency in fuel supply.

Circula+ Platform

Circula+, a platform created by CSN Inova in 2022, connects sellers and buyers of co-products through a digital marketplace and provides consulting services to optimize waste management practices. In 2025, the platform advanced its innovation strategy by offering customized solutions for companies seeking to optimize material disposal, reduce waste, and ensure compliance with environmental regulations