Metall. Res. Technol.
Volume 120, Number 6, 2023
|Number of page(s)||15|
|Published online||25 October 2023|
The method of reducing energy consumption in large blast furnace smelting by increasing top pressure
Low-Carbon Research Institute, Anhui University of Technology, Maanshan 243000, Anhui, China
2 Key Laboratory of Metallurgy Engineering and Resources Recycling of Ministry of Education, Maanshan 243000, Anhui, China
3 Bayuquan Branch of Angang Steel Co., Ltd., Yingkou 115007, Liaoning, China
* e-mail: firstname.lastname@example.org
Accepted: 12 September 2023
Based on the fundamental processes and principles of ironmaking in a BF, an analysis was conducted on the production technical data from 18 large-scale 3200 m3 BFs in China in 2020. The study systematically investigated the influence of top pressure on reduction, air injection, furnace top, energy consumption, and pig iron composition within the BF. Practical operations in a newly No. 1 3200 m3 BF in a Chinese company demonstrated that increasing the top pressure not only effectively improved the smelting process, operational stability, and reduced furnace fluctuations but also led to a decrease in dust emissions, increased pig iron yield and quality, and significantly reduced fuel consumption and process energy consumption. Against the backdrop of dual carbon objectives, gaining a scientific understanding of the dynamic operation principles of the BF smelting process and continuously exploring low-carbon ironmaking methods have become the focus for professionals and researchers in the fields of BF ironmaking, production management, technology, and scientific research.
Key words: large blast furnace / top pressure / production data / low-carbon smelting / high efficiency and low consumption
© EDP Sciences, 2023
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