The use of carbon-dioxide to enhance the solvent extraction of zinc from ammonia leaching solutions of blast furnace dust

Luo, Xingguo; Wei, Chang; Li, Xingbin; Deng, Zhigan; Li, Minting; Fan, Gang

doi:10.1016/j.hydromet.2020.105458

Cited by 10 publications

(2 citation statements)

References 17 publications

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“…In recent years, much research has been conducted on the application of BFD [ 7 ], including the recovery of valuable metals such as zinc, iron, and lead [ 8 , 9 , 10 ]. Other applications of BFD have also been studied, including the use of blast furnace slag and glass waste to prepare foamed glass-ceramics [ 11 ], and the use as a raw material to prepare geopolymers [ 12 ], black iron oxide pigment [ 13 ], catalysts [ 14 ], and catalytic ceramic fillers [ 4 ].…”

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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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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“…The methods used for selective leaching can be divided into acid leaching and alkali leaching. Iminodiacetic acid [21] or enoic acid [22] is adopted in the acid leaching method, and ammonia water [23] or an NaOH solution [24] is used in the alkaline method to selectively leach zinc. The complex state of zinc in dust results in relatively low leaching efficiency.…”

Section: Introductionmentioning

confidence: 99%

Coupled Thermodynamics and Phase Diagram Analysis of Gas-Duct Concretion Formation in Pyro-Processing Ironmaking and Steelmaking Dust

Wang

Hua

et al. 2021

Minerals

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In recent years, the steel industry has accumulated approximately 100 million tons of dust annually, severely threatening the environment. Rotary kiln technology is one of the main industrial methods used to process this dust. However, some substances in flue gas congeal on the cooling wall of the gas duct and seriously affect production. In this study, the properties and formation mechanisms of the coagulum were investigated on the basis of experimental and thermodynamic analyses. The experimental results showed that the coagulum is mainly composed of chlorides (KCl, NaCl, and ZnCl2), oxides (ZnO, FeO), and carbon, with three structures: lumps, fibers, and particles. Based on a thermodynamic analysis, a reasonable explanation was proposed to clarify the formation mechanism. The liquid phase (a eutectic system of KCl–NaCl–ZnCl2), dendrites (KCl, NaCl), and particles (ZnO, FeO, C) were found to act as binders, stiffeners, and aggregates in the coagulum, respectively, constituting a composite structure. Liquids acting as binders are essential for coagulum formation, and dendrites and particles strengthen this effect. Furthermore, the eutectic system of chlorides plays a crucial role in coagulum formation. The results of the present study offer a theoretical understanding of gas-duct coagulation and will provide guidance for adopting alleviation measures.

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Roasting and leaching process of iron sulfate to separate zinc and iron from blast furnace dust

Shi

Liu

et al. 2022

Korean J. Chem. Eng.

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The use of carbon-dioxide to enhance the solvent extraction of zinc from ammonia leaching solutions of blast furnace dust

Cited by 10 publications

References 17 publications

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

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

Coupled Thermodynamics and Phase Diagram Analysis of Gas-Duct Concretion Formation in Pyro-Processing Ironmaking and Steelmaking Dust

Roasting and leaching process of iron sulfate to separate zinc and iron from blast furnace dust

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