含锌粉尘氢还原低碳高值化新路线构建

滕飞; 郭培民; 朱德庆; 龙红明; 李凯; 王磊; 孔令兵

doi:10.7513/j.issn.1004-7638.2023.05.015

含锌粉尘氢还原低碳高值化新路线构建

doi: 10.7513/j.issn.1004-7638.2023.05.015

滕飞^1,,
郭培民^1, ,,
朱德庆²,
龙红明³,
李凯⁴,
王磊¹,
孔令兵¹

1.
钢铁研究总院先进钢铁流程及材料国家重点实验室, 北京100081
2.
中南大学资源加工与生物工程学院, 湖南长沙410083
3.
安徽工业大学冶金工程学院, 安徽马鞍山 243002
4.
河北远大中正生物科技有限公司, 河北石家庄 050700

基金项目: 国家自然科学基金项目（52104297）；山西省科技重大专项计划揭榜挂帅项目（ZDJB08）。

详细信息

作者简介:
滕飞，1987年出生，博士研究生，高级工程师，研究方向：烧结、球团，E-mail：13426292269@139.com

通讯作者:
郭培民，1975年出生，博士，教授级高工，博士生导师，研究方向：炼铁新技术，E-mail：guopm@pku.org.cn

中图分类号: X757
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- 文章访问数: 80
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- 被引次数: 0
出版历程
- 收稿日期: 2023-05-29
- 网络出版日期: 2023-11-04
- 刊出日期: 2023-10-31

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

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

摘要

摘要: 对国内外钢厂的含锌粉尘综合利用理论及技术进行了分析，火法还原工艺基于以煤为载体的高温碳冶金，能耗高、碳排放量大、污染严重是其难以回避的共性问题，同时还带来次氧化锌回收利用产生的能耗高、环境负荷大等新问题。根据团队以往研究经验，并结合目前国内外对低碳冶炼的新要求，提出了含锌粉尘氢还原低碳排放高值化利用技术思路：通过氢还原，将含锌粉尘中的铁和锌、铅、铋等有价金属还原，还原后的锌、铅、铋以气体形态被氢气载体带走，实现金属铁与有色金属的分离，含氢烟气再通过梯级冷凝分离锌、铅等有色金属。同时开展了含锌粉尘制备球团、氢还原理论和试验、含锌蒸汽分离理论分析及金属铁磁选等研究工作，为该技术思路的实施提供了坚实的基础。新技术有望实现钢厂含锌粉尘的低碳化冶炼，同时还可以得到附加值更高的金属锌及其它金属产品。
- 含锌粉尘 /
- 氢还原 /
- 低碳排放 /
- 高值化利用
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

HTML全文

图 1 回转窑处理含锌粉尘提锌流程

Figure 1. Zinc extraction process for treating zinc containing dust in rotary kiln

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图 2 转底炉处理钢厂含锌粉尘流程

Figure 2. Treatment of zinc containing dust in steel plant by rotary hearth furnace

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图 3 一种次氧化锌综合利用流程

Figure 3. A comprehensive utilization process of secondary zinc oxide

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图 4 钢厂含锌粉尘氢还原低碳高值化新思路

Figure 4. New idea of hydrogen reduction of zinc containing dust in steel plant

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图 5 含锌粉尘球团宏观形貌

Figure 5. Macromorphology of pellets containing zinc dust

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图 6 H₂还原锌氧化物和铁氧化物的平衡气相组成

Figure 6. Equilibrium gas phase composition diagram of zinc oxide and iron oxide reduced by H₂

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图 8 金属蒸汽与粉尘中氯化物和氟化物的平衡温度与含量关系

Figure 8. Relationship between equilibrium temperature and content of metal vapor and chlorides and fluorides

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图 7 氢还原后金属化球团的微观结构

Figure 7. Microstructure of metallized pellets after hydrogen reduction

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