Hydrometallurgical detoxification and recycling of electric arc furnace dust

IF 5.6 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY International Journal of Minerals, Metallurgy, and Materials Pub Date : 2023-09-23 DOI:10.1007/s12613-023-2637-2

Yang Xue, Xiaoming Liu, Chunbao (Charles) Xu, Yonghui Han

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Abstract

Electric arc furnace dust (EAFD) is a hazardous waste but can also be a potential secondary resource for valuable metals, such as Zn and Fe. Given the increased awareness of carbon emission reduction, energy conservation, and environmental protection, hydrometallurgical technologies for the detoxification and resource use of EAFD have been developing rapidly. This work summarizes the generation mechanisms, compositions, and characteristics of EAFD and presents a critical review of various hydrometallurgical treatment methods for EAFD, e.g., acid leaching, alkaline leaching, salt leaching, and pretreatment-enhanced leaching methods. Simultaneously, the phase transformation mechanisms of zinc-containing components in acid and alkali solutions and pretreatment processes are expounded. Finally, two novel combined methods, i.e., oxygen pressure sulfuric acid leaching combined with composite catalyst preparation, and synergistic roasting of EAFD and municipal solid waste incineration fly ash combined with alkaline leaching, are proposed, which can provide future development directions to completely recycling EAFD by recovering valuable metals and using zinc residue.

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电弧炉粉尘的湿法冶金脱毒及回收利用

电弧炉粉尘(EAFD)是一种危险废物，但也可能是锌和铁等有价金属的潜在二次资源。随着人们对碳减排、节能环保意识的增强，水法冶金脱毒和资源化利用EAFD技术得到了迅速发展。本文总结了EAFD的产生机理、组成和特征，并对EAFD的各种湿法冶金处理方法进行了综述，如酸浸、碱浸、盐浸和预处理强化浸出方法。同时，阐述了含锌组分在酸碱溶液中的相变机理及预处理工艺。最后，提出了氧压硫酸浸出结合复合催化剂制备、EAFD与城市生活垃圾焚烧飞灰协同焙烧结合碱性浸出两种新的组合方法，为EAFD回收有价金属和锌渣完全回收提供了未来的发展方向。

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来源期刊

International Journal of Minerals, Metallurgy, and Materials 工程技术-材料科学：综合

CiteScore

9.30

自引率

16.70%

发文量

205

审稿时长

2 months

期刊介绍： International Journal of Minerals, Metallurgy and Materials (Formerly known as Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material) provides an international medium for the publication of theoretical and experimental studies related to the fields of Minerals, Metallurgy and Materials. Papers dealing with minerals processing, mining, mine safety, environmental pollution and protection of mines, process metallurgy, metallurgical physical chemistry, structure and physical properties of materials, corrosion and resistance of materials, are viewed as suitable for publication.