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Emission Reduction and Environmental Benefits with Advanced Technology
A Usiminas achieved a reduction of approximately 95% in bleeder openings at Blast Furnace 3, located in Ipatinga (MG), since November 2023, when it resumed operations after a major overhaul. This operational process, used to relieve internal pressure in the equipment, was generating environmental impacts and inconveniences to the community. However, with an investment of R$ 2.7 billion, the company made improvements that increased efficiency, reinforced safety, and ensured greater sustainability.
Technological Modernization and Continuous Monitoring
According to information from the company itself, one of the most relevant advancements was the modernization of real-time monitoring sensors. These devices started to monitor the temperature and gas flow, which significantly improved process control. As a result, the risk of bleeder openings was substantially minimized.
Before the overhaul, carried out in 2023, the device openings were more frequent, causing dust, noise, and discomfort to the neighboring population. Now, with the introduction of new technologies, the risk of emergency occurrences has drastically decreased, reinforcing operational stability.
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Uniform Distribution of Raw Materials
Furthermore, the company implemented technology that ensures a more uniform distribution of raw materials within the furnace, which contributed to the reduction of internal pressure variations. This point was highlighted by Gilberto Silva, Operations Manager of Blast Furnace 3 at Usiminas, who emphasized that the set of improvements brought greater control over operational parameters, allowing them to avoid emergency actions.
According to Silva, “this overhaul provided us with more control over operational parameters. The set of improvements brought stability and reduced the need to open the bleeder.”
Process Adjustments and Focus on Safety
Additionally, the modernization involved enhancement of the blowing pattern, adjustments in process flow rates, and preventive action on critical equipment, ensuring that operations remained stable and aligned with environmental commitments.
Mônica Lima, Environmental Manager at Usiminas, reinforced that the investment brought clear benefits to the neighborhood: “caring for the community and respecting the environment are commitments of Usiminas. This significant reduction in visible emissions reinforces our responsible action.”
Blast Furnace 3 and Its Relevance to the Industry
The new Blast Furnace 3 went into operation in November 2023, marking a significant technological advancement for the steel industry in Brazil. With a capacity to produce 3 million tons of pig iron annually, the equipment is now operating as the most modern in the West, according to the company.
Consequently, the new configuration of the furnace contributes to lower CO₂ and particulate matter emissions, consolidating a new level of environmental and industrial performance. Thus, the project represents not only a technological gain but also a commitment to sustainability and the modernization of the Brazilian steel industry.
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