Jianheng Zhuang
Central Research Institute of Building and Construction CO., Ltd., MCC Group, Beijing 100088, China
Zhanjiang Environmental Protection Operation Management Co., Ltd., MCC Group, Zhanjiang 524000, China
Hui Wang
Central Research Institute of Building and Construction CO., Ltd., MCC Group, Beijing 100088, China
State Key Laboratory of Iron and Steel Industry Environmental Protection, Beijing 102600, China
Energy Saving and Environmental Protection Co., Ltd., MCC Group, Beijing 100088, China
Yuan Dong
Central Research Institute of Building and Construction CO., Ltd., MCC Group, Beijing 100088, China
State Key Laboratory of Iron and Steel Industry Environmental Protection, Beijing 102600, China
Wen Li
Central Research Institute of Building and Construction CO., Ltd., MCC Group, Beijing 100088, China
State Key Laboratory of Iron and Steel Industry Environmental Protection, Beijing 102600, China
During the tapping process of a blast furnace, a large amount of high-temperature dust is generated. Relying solely on dust removal systems to control the spread of dust within the workshop will generate huge energy consumption. Optimizing the high-temperature dust capture system is crucial for improving the working environment, reducing air pollution, and achieving energy savings and emission reductions. Considering the structural layout of workshops and the tapping characteristics of small and medium-sized blast furnaces in China, this study optimized the design of the particulate capture system by incorporating local dust hoods through numerical simulation, while also taking into account the local capture of particles at the hot metal ladle. The research found that to prevent dust escape, adding a small dust hood above the tapping hole and a side suction hood with a capacity of 100,000 m3/h near the tap hole allowed all particles to be directly captured, reducing both their residence time and travel distance. Additionally, the height of thermal stratification within the workshop decreased, and the area of high-temperature zones was reduced. After adding a side suction hood in the hot metal ladle area, the temperature under the hood improved significantly, with the air temperature around the ladle dropping to approximately 40 ℃. When the side suction hood’s airflow exceeded 100,000 m³/h, the capture efficiency reached 99.2%. However, when the observation hole of the top suction hood above the ladle was opened, the temperature inside the hood decreased by 10 °C, and approximately 11.9% of the particles escaped through the observation hole into the workshop.
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Copyright © 2025 Jianheng Zhuang, Hui Wang, Yuan Dong, Wen Li
This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.
