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Low CO2 Emission by Improving CO Utilization Ratio in China’s Blast Furnaces

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Ironmaking and Steelmaking Processes

Abstract

In recent years, the CO2 emission in China is the highest all around the world, accounting for about 30 %. China’s 15 % CO2 emission is produced from iron and steel companies, where blast furnace contributes more than 60 %. Therefore, blast furnace is the key to reduce CO2 emission for iron and steel companies. Blast furnace is a countercurrent reactor between descending burdens and ascending gas. The higher the CO utilization ratio is, the lower the CO2 emission. There are two main measures to improve CO utilization ratio—upper adjustment and lower adjustment. The upper adjustment is mainly about the burden distribution which includes adjusting batch weight, charging mode, stock line and so on. The lower adjustment is mainly about the gas distribution in the lower part of the blast furnace, which includes adjusting the gas volume, gas temperature, gas humidity and so on. The paper presents the upper and lower adjustments to improve CO utilization ratio in China’s blast furnaces.

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Acknowledgements

The financial support from the Fundamental Research Funds for the Central Universities (Grant No. FRF-TP-15-065A1) and China Postdoctoral Science Foundation (2016M591076) is gratefully acknowledged. The authors also gratefully acknowledge the helpful comments and suggestions of the reviewers, which have improved the paper.

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Authors and Affiliations

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, No. 30 Xueyuan Road, Haidian District, Beijing, 100083, China

    Mingyin Kou, Laixin Wang & Shengli Wu

  2. College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China

    Jian Xu

  3. Engineering Research Institute, University of Science and Technology Beijing, No. 30 Xueyuan Road, Haidian District, Beijing, 100083, China

    Qingwu Cai

Authors
  1. Mingyin Kou
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  2. Laixin Wang
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  3. Jian Xu
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  4. Shengli Wu
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  5. Qingwu Cai
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Corresponding author

Correspondence to Mingyin Kou .

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Editors and Affiliations

  1. Department of Innovation Engineering, University of Salento, Lecce, Italy

    Pasquale Cavaliere

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Kou, M., Wang, L., Xu, J., Wu, S., Cai, Q. (2016). Low CO2 Emission by Improving CO Utilization Ratio in China’s Blast Furnaces. In: Cavaliere, P. (eds) Ironmaking and Steelmaking Processes. Springer, Cham. https://doi.org/10.1007/978-3-319-39529-6_11

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