A new low carbon high value route for hydrogen reduction of zinc containing dust

Teng Fei; Guo Peimin; Zhu Deqing; Long Hongming; Li Kai; Wang Lei; Kong Lingbing

doi:10.7513/j.issn.1004-7638.2023.05.015

Volume 44 Issue 5

Oct. 2023

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Teng Fei, Guo Peimin, Zhu Deqing, Long Hongming, Li Kai, Wang Lei, Kong Lingbing. A new low carbon high value route for hydrogen reduction of zinc containing dust[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(5): 98-104. doi: 10.7513/j.issn.1004-7638.2023.05.015

Citation:

Teng Fei, Guo Peimin, Zhu Deqing, Long Hongming, Li Kai, Wang Lei, Kong Lingbing. A new low carbon high value route for hydrogen reduction of zinc containing dust[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(5): 98-104. doi: 10.7513/j.issn.1004-7638.2023.05.015

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A new low carbon high value route for hydrogen reduction of zinc containing dust

doi: 10.7513/j.issn.1004-7638.2023.05.015

1.
State Key Laboratory for Advanced Iron and Steel Processes and Materials, Iron and Steel Research Institute, Beijing 100081, China
2.
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
3.
School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, Anhui, China
4.
Hebei Yuanda Zhongzheng Bio-Tech Co., Ltd., Shijiazhuang 050700, Hebei, China

Received Date: 2023-05-29
Available Online: 2023-11-04
Publish Date: 2023-10-31

Abstract

Abstract

In this paper, the theory and technology of comprehensive utilization of zinc containing dust in steel plants at home and abroad are analyzed. The pyrometallurgical process is based on high-temperature carbon metallurgy with coal carrier. High energy consumption, enlarged carbon emission and serious pollution are its common problems that are difficult to avoid. At the same time, it also produces new problems such as high energy consumption and heavy environmental load caused by the recovery and utilization of secondary zinc oxide. According to the research experience of the research team and combined with the new requirements for low carbon at home and abroad, this paper puts forward a new technical idea of high-value utilization of low-carbon emission by hydrogen reduction: Iron and valuable metals such as zinc, lead and bismuth in zinc containing dust are reduced by hydrogen reduction, and the reduced zinc, lead and bismuth are taken away by hydrogen carrier in the form of gas to realize the separation of metal iron and non-ferrous metals. Non-ferrous metals such as zinc and lead are separated from hydrogen containing flue gas by step condensation. The preparation of pellets from zinc containing dust, hydrogen reduction theory and testing, theoretical analysis of zinc containing steam separation and metal ferromagnetic separation have been carried out, which provides a feasible and solid foundation for the proposal of this technical idea. The new technology is promising to realize low-carbon smelting of zinc containing dust in steel plants, and can also obtain metal zinc and other metal products with higher added value.
- zinc dust,
- hydrogen reduction,
- low carbon emission,
- high value utilization

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References(31)

References

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