Research status and development of extraction process of zinc-bearing dust from ironmaking and steelmaking—a critical review

Zhu, Renlin; Huang, Run; Xu, Anxun; Li, Bo; Zang, Yonggang; Deng, Xue; Yang, Jing; Li, Miao; Long, Xiaoyu

doi:10.1007/s42243-023-01004-5

Cited by 10 publications

(2 citation statements)

References 98 publications

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“…The material is fed by the conveyor belt into the kiln tail feeding port into the kiln, and it moves to the high-temperature area of the kiln head as the rotary kiln rotates continuously. According to the temperature, the kiln can be divided into the pre-reduction zone, the reduction zone, and the sponge iron zone [84]. Among them, the highest temperature in the reduction zone and sponge iron zone exceeds 1200 °C, the zinc-containing compounds are reduced to zinc steam, which is released from the end of the kiln into the dust collection system, and harmless kiln slag is excluded from the kiln head.…”

Section: Rotary Kiln Processmentioning

confidence: 99%

Multi-Source Ferrous Metallurgical Dust and Sludge Recycling: Present Situation and Future Prospects

Zhang,

Long

et al. 2024

Crystals

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Multi-source ferrous metallurgical dust and sludge are significant components of iron-containing solid waste in the iron and steel industry. It is crucial for the sustainable operation of steel enterprises to recycle iron from ferrous metallurgical dust and sludge (FMDS) for use in steel smelting. However, besides Fe, FMDS also contains valuable elements such as Zn, Pb, K, and Na, among others. While these valuable elements hold high recovery value, they impede the direct reuse of FMDS by iron and steel enterprises. This paper introduces the compositional characteristics of multi-source ferrous metallurgical dust and sludge, analyzes the main recycling technologies associated with FMDS at the present stage of development, and discusses the characteristics of different technologies. In view of this, a new idea of the “cooperative treatment of multi-source ferrous metallurgical dust and sludge—full quantitative recovery of valuable elements” is put forward. This new idea integrates a variety of treatment processes to directly recycle FMDS within the steel plant, enhancing the adequacy of dust and sludge recovery and reducing the risk of environmental pollution. This paper provides a reference for achieving the full quantification and utilization of high-value-added FMDS in steel plants.

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Section: Rotary Kiln Processmentioning

confidence: 99%

Multi-Source Ferrous Metallurgical Dust and Sludge Recycling: Present Situation and Future Prospects

Zhang,

Long

et al. 2024

Crystals

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“…Despite the solidification, and that landfill treatment can stabilize the heavy metal elements in SSD and reduce leachate concentration below the limit, the valuable metals from SSD have not been effectively exploited [7]. Moreover, hydrometallurgy and pyrometallurgy treatment processes also have some disadvantages, such as complicated process flow, unstable metal recovery, high energy consumption and secondary pollutants [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Spinel-Type Black Pigments Using Microwave-Assisted Calcination of Stainless Steel Dust: The Effect of Manganese Molar Content

Zhang,

Xu,

et al. 2023

Metals

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Stainless steel dust is rich in valuable metal elements including Fe, Cr, Ni and Mn, which can be utilized to prepare Fe–Cr–Ni–Mn series black pigments. Meanwhile, manganese can absorb the majority of the visible light wavelength range, which improves the color rendering performance of Fe–Cr–Ni–Mn series black pigments. However, the coloring mechanism of manganese in the above black pigments is not clear. Therefore, the effect of manganese oxide content on the preparation of spinel-type black pigments from microwave-assisted calcination of stainless steel dust was studied in this work. The results show that with the increase in MnO content in the raw mixture, the crystal plane spacing of black pigments increases from 0.2525 nm to 0.2535 nm, the grain size grows from 61.4619 nm to 79.7171 nm, and the lattice constant grows from 0.8377 to 0.8406 nm. Moreover, the band gap is decreased from 1.483 eV to 1.244 eV, the absorbance increases significantly and has a consistent absorbance in the visible range, and the L*, a* and b* values reduce from 41.8, 0.6, 1.6 to 32.0, 1.0, 0.8, respectively. MnO can react with the spinel in stainless steel dust, forming Mn3O4, MnCr2O4 and Ni (Fe,Cr)O4 in the system, with a regular polyhedral structure. The prepared pigments have excellent thermal stability at 1100 °C and good compatibility with transparent glazes, which can be adhered to the surface of ceramic tiles after calcination to demonstrate better compatibility as the content of MnO increases.

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Life Cycle Assessment of Coal-Fired System

2024

Industrial Ecology and Environmental Management

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Research status and development of extraction process of zinc-bearing dust from ironmaking and steelmaking—a critical review

Cited by 10 publications

References 98 publications

Multi-Source Ferrous Metallurgical Dust and Sludge Recycling: Present Situation and Future Prospects

Multi-Source Ferrous Metallurgical Dust and Sludge Recycling: Present Situation and Future Prospects

Preparation of Spinel-Type Black Pigments Using Microwave-Assisted Calcination of Stainless Steel Dust: The Effect of Manganese Molar Content

Life Cycle Assessment of Coal-Fired System

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