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Development and application of coke oven gas spraying on sinter bed

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Abstract

The Shanghai Meishan Iron and Steel Co., Ltd. has a large supply of coke oven gas (COG) and has the potential to develop and apply the spraying of COG on the surface of a sinter bed. The effects of the amount of COG, the spraying time, and the spraying distribution with the process on the quantity and quality indexes of sinter were investigated in the laboratory experiments. The results showed that the COG spraying can improve the sinter indexes to a large extent if appropriate parameters were used. It was found that an appropriate amount of COG, a relatively long spraying time, and a decreasing distribution of the COG amount with the spraying process all help to obtain a better performance for sinter quantity and quality indexes. When the COG spraying was applied to the No. 3 sintering machine, the sinter tumbler index increased by 0.45%, the overall finished product rate increased by 0.72%, the solid fuel consumption decreased by 4.06 kg/t, the reducibility increased by 3.89%, and the cost of iron decreased by 5.29 CNY/t, and the CO2, SO2 and NOx emissions also decreased, thus proving the feasibility of this technology. Therefore, COG spraying provides a new way to improve sinter and also decrease the energy consumption and pollution.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Number 51804027) and Fundamental Research Funds for the Central Universities (FRF-IC-18-010).

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Authors and Affiliations

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    He-ping Li, Sheng-li Wu, Zhi-bin Hong, Heng Zhou & Ming-yin Kou

  2. Ironmaking Plant, Shanghai Meishan Iron and Steel Co., Ltd., Nanjing, 210039, Jiangsu, China

    He-ping Li

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  1. He-ping Li
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  2. Sheng-li Wu
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  3. Zhi-bin Hong
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  4. Heng Zhou
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Correspondence to Sheng-li Wu or Ming-yin Kou.

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Li, Hp., Wu, Sl., Hong, Zb. et al. Development and application of coke oven gas spraying on sinter bed. J. Iron Steel Res. Int. 27, 617–623 (2020). https://doi.org/10.1007/s42243-020-00403-2

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  • DOI: https://doi.org/10.1007/s42243-020-00403-2

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