A Review on Recycling and Reutilization of Blast Furnace Dust as a Secondary Resource

Xiao, Xiong; Zhang, Shengfu; Sher, Farooq; Xin, Yuntao; You, Zhixiong; Li, Wen; Hu, Meilong; Qiu, Guibao

doi:10.1007/s40831-021-00377-9

Cited by 42 publications

(14 citation statements)

References 57 publications

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“…The basic principle of pyrometallurgical treatment is to adopt high-temperature heating in a metallurgical furnace to strip nonmetals, so that PMs are melted in other metal smelting materials or molten salts, thereby separating PMs . Pyrometallurgy usually adopts an oxidation refining method and a chlorination refining method, and the fine gold content can reach more than 95%. , However, pyro-oxidation refining requires adding an oxidant for smelting at a temperature of 1200–13,500 °C, which is not only energy intensive but also unsafe. Although the smelting temperature required for pyrochlorination refining is relatively low, the volatile chlorides during refining will increase the losses of PMs.…”

Section: Basic Properties Of Pms and Key Points For Recoverymentioning

confidence: 99%

“…24 Pyrometallurgy usually adopts an oxidation refining method and a chlorination refining method, and the fine gold content can reach more than 95%. 25,26 However, pyro-oxidation refining requires adding an oxidant for smelting at a temperature of 1200−13,500 °C, which is not only energy intensive but also unsafe. Although the smelting temperature required for pyrochlorination refining is relatively low, the volatile chlorides during refining will increase the losses of PMs.…”

Section: Recoverymentioning

confidence: 99%

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Systematic Assessment of Precious Metal Recovery to Improve Environmental and Resource Protection

et al. 2022

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Environmental pollution and resource shortage are two major challenges facing the world today, and resourcization of precious metals is one of the effective strategies to confront these problems. Precious metals, known for their high performance and scarcity, are indispensable our current lives. As nonrenewable resources, the demand and consumption of precious metals are increasing every year. Therefore, it is necessary to develop green and efficient precious metal recovery technologies to alleviate the environmental and resource crisis. This perspective summarizes various typical precious metal recovery strategies and pays attention to innovations from traditional technologies. We also evaluate and prospect the above methods based on secondary pollution and recovery efficiency.

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Section: Basic Properties Of Pms and Key Points For Recoverymentioning

confidence: 99%

Section: Recoverymentioning

confidence: 99%

Systematic Assessment of Precious Metal Recovery to Improve Environmental and Resource Protection

et al. 2022

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“…Most of them are rich in iron, carbon, calcium, etc. [2][3][4]. They may also contain some hazardous elements, such as zinc [5], lead [6], chromium [7], and alkalis [8].…”

Section: Introductionmentioning

confidence: 99%

Efficient Utilization of Carbon-Bearing Dusts in Composite Agglomeration Process for Iron Ore Sintering

Xiong

Peng

Mao³

et al. 2022

J. Sustain. Metall.

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This study focused on improving recycling of carbon-bearing dusts from integrated steel plants by the composite agglomeration process (CAP), in which four types of the dusts were prepared as pelletized feed, while the other raw materials were used as matrix feed for sintering to produce agglomeration product as a substitute for traditional iron ore sinter. It was found that the carbon distribution in the pelletized feed and matrix feed and segregation of pelletized feed in the burden layer strongly affected the process. When the total carbon content of the feeds was 3.22 wt%, the proper carbon content ratio of pelletized feed to matrix feed was 1.65-2.48. At this moment, optimizing the segregation of pelletized feed which contained 6.64 wt% carbon (named DP-4) in the sintering burden layer would improve the quality indexes of agglomeration product with higher carbon utilization efficiency, i.e., lower total carbon consumption.

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“…The BFD has fine and uneven particle size, and is composed mainly of iron oxide and carbon, as well as harmful impurities such as lead, zinc, and alkali metal oxides [ 1 ]. This solid waste will cause serious harm to the environment [ 2 , 3 ]. According to statistics, the annual output of BFD in China alone will exceed 20 million tons in 2020 [ 2 ], which contains a lot of valuable metals such as zinc and iron [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…This solid waste will cause serious harm to the environment [ 2 , 3 ]. According to statistics, the annual output of BFD in China alone will exceed 20 million tons in 2020 [ 2 ], which contains a lot of valuable metals such as zinc and iron [ 4 ]. However, since the accumulation of lead, zinc, and other alkali metals will affect blast furnace smelting, it is difficult to recover the valuable metals in BFD [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Micro-Electrolysis Composite Materials from Blast Furnace Dust and Application into Organic Pollutant Degradation

et al. 2022

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A micro-electrolysis material (MEM) was successfully prepared from carbothermal reduction of blast furnace dust (BFD) and coke as raw materials in a nitrogen atmosphere. The MEM prepared from BFD had strong ability in removing methyl orange, methylene blue, and rose bengal (the removal rates of methyl orange and methylene blue were close to 100%). X-ray diffraction showed that the iron mineral in BFD was ferric oxide, which was converted to zero-valent iron after being reduced by calcination. Scanning electron microscopy showed that nano-scale zero-valent iron particles were formed in the MEM. In short, the MEM prepared from BFD can effectively degrade organic pollutants.

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A Review on Recycling and Reutilization of Blast Furnace Dust as a Secondary Resource

Cited by 42 publications

References 57 publications

Systematic Assessment of Precious Metal Recovery to Improve Environmental and Resource Protection

Systematic Assessment of Precious Metal Recovery to Improve Environmental and Resource Protection

Efficient Utilization of Carbon-Bearing Dusts in Composite Agglomeration Process for Iron Ore Sintering

Synthesis of Micro-Electrolysis Composite Materials from Blast Furnace Dust and Application into Organic Pollutant Degradation

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