Characterization of Sintering Dust, Blast Furnace Dust and Carbon Steel Electric Arc Furnace Dust

Chang, Feng; Wu, Shengli; Zhang, Fengjie; Lu, Haifei; Du, Kaiping

doi:10.1007/978-3-319-48191-3_10

Cited by 4 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this work, the study of the chemical and mineralogical composition and evaluation of the textural and morphological properties of such byproducts were carried out using a variety of techniques: XRF, XRD, elemental analysis, FTIR spectroscopy, TGA-DTG analysis, N2 adsorption-desorption, Hg intrusion porosimetry, SEM and TEM. To the best of our knowledge, sinter dusts were previously characterized in just a few works (Chang et al, 2015;Lanzerstorfer and Steiner, 2016;Sinha et al, 2010) but such characterization was cursory in comparison with the one here presented, in which a great number of techniques were employed. Besides, this work addressed, for the first time ever, the study of the environmental behavior of dust particles accumulated in disposal sites for ensuring environmentally-friendly sinter dust dumpsites.…”

Section: Introductionmentioning

confidence: 96%

Characterization of sinter flue dust to enhance alternative recycling and environmental impact at disposal

Masaguer¹,

Oulego

Collado

et al. 2018

Waste Management

View full text Add to dashboard Cite

Dust emission is one of the main environmental pollution impacts associated with steelmaking. In this sense, electrostatic precipitators (ESP) are regarded as the best available technique for treating this type of emission, thus generating two differentiated fractions: coarse and fine. Thorough chemical and structural characterization of both materials was carried out to recycle these byproducts in either the sintering process or other steps of pig iron production. Both types of dusts are crystalline heterogeneous materials mainly composed of sepiolite (Mg8Si12(OH)2•12H2O), hematite (Fe2O3) and calcite (CaCO3), the coarse fraction containing low amounts of Na (0.38  0.04%) and K (0.17  0.02%), which adversely affect blast furnace operation. Hence, the coarse fraction is suitable for recycling, whereas the fine one presents higher concentrations of these alkali elements. Besides, textural characterization revealed that dust particulates are essentially macroporous materials, with specific surface area values of 21.6 m 2 /g for the coarse fraction and 33.7 m 2 /g for dust fines. In order to ensure inoffensive dumpsites, the environmental behavior associated with dust particles accumulated in disposal areas was also evaluated by performing leaching studies simulating different rainfall scenarios. It was found that the specific leaching rates of Ca, Mg, K and S varied between 0.072  0.001 and 0.75  0.01 µgelement/(gdust•d), whereas slower leaching rates were obtained for heavy metals (Fe, Mn and Cu), the values ranging from (1.20  0.1)10-4 to (1.8  0.1)10-3 µgelement/(gdust•d). These low rates indicate that the leaching of sinter dusts compounds has minimal environmental impact.

show abstract

Section: Introductionmentioning

confidence: 96%

Characterization of sinter flue dust to enhance alternative recycling and environmental impact at disposal

Masaguer¹,

Oulego

Collado

et al. 2018

Waste Management

View full text Add to dashboard Cite

show abstract

“…2 It is usually disposed of as waste, causing environmental pollution and loss of valuable resources. 3,4 The reuse of sintering dust is an important practice for the steel industry to reduce waste, conserve resources, and protect the environment. 5 The utilization of sintering dust has attracted a lot of attention from researchers.…”

Section: Introductionmentioning

confidence: 99%

“…Sintering dust is a byproduct of the sintering process used in the production of iron and steel, and it contains valuable elements such as iron, zinc, etc . It is usually disposed of as waste, causing environmental pollution and loss of valuable resources. , The reuse of sintering dust is an important practice for the steel industry to reduce waste, conserve resources, and protect the environment . The utilization of sintering dust has attracted a lot of attention from researchers. , …”

Section: Introductionmentioning

confidence: 99%

Performance of an SCR Catalyst from Sintering Dust by the Hydrothermal Method and Its Water/Sulfur Resistance

Zhou

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

Durability is an issue for selective catalytic reduction (SCR) catalysts due to their susceptibility to sulfur and water poisoning. In this study, Nano-Ce 10 -PSDC HF /ZrO 2 was prepared by the hydrothermal method using sintering dust, and the impact of SO 2 or water vapor on its SCR performance was investigated. The denitrification performance of Nano-Ce 10 -PSDC HF /ZrO 2 was better than that of 0.25-Ce 10 -PSDC HF /ZrO 2 prepared by the impregnation method in the entire temperature interval from 80 to 400 °C. The highest denitrification rate of 93.6% was achieved at 280 °C. Nano-Ce 10 -PSDC HF /ZrO 2 had a smaller particle size and uniform dispersion but also formed a high concentration of Ce 3+ and adsorbed oxygen O α on the surface. Additionally, it showed better resistance to water and sulfur than 0.25-Ce 10 -PSDC HF /ZrO 2 . Even when exposed to 8% H 2 O and 400 ppm SO 2 , the denitrification rate of Nano-Ce 10 -PSDC HF /ZrO 2 remained at 82.1% after 4 h. SO 2 is more toxic to SCR catalysts than H 2 O. The effect of water on catalyst activity is partially reversible. Deactivation of SCR by SO 2 is primarily caused by the formation of ammonium sulfate species, with some contribution from competitive adsorption between SO 2 and NO x . In conclusion, the Nano-Ce 10 -PSDC HF /ZrO 2 catalyst exhibited the best SCR performance, with water and sulfur resistance, and effectively utilized sintering dust, which has potential application value.

show abstract

Efficient Extraction of Bismuth in a Two-Stage Leaching Process for the Recovery of Zinc and Lead from Zinc-Rich Dust

Feng

Wang

et al. 2023

The Minerals, Metals &Amp; Materials Series

View full text Add to dashboard Cite

Characterization of Sintering Dust, Blast Furnace Dust and Carbon Steel Electric Arc Furnace Dust

Cited by 4 publications

References 10 publications

Characterization of sinter flue dust to enhance alternative recycling and environmental impact at disposal

Characterization of sinter flue dust to enhance alternative recycling and environmental impact at disposal

Performance of an SCR Catalyst from Sintering Dust by the Hydrothermal Method and Its Water/Sulfur Resistance

Efficient Extraction of Bismuth in a Two-Stage Leaching Process for the Recovery of Zinc and Lead from Zinc-Rich Dust

Contact Info

Product

Resources

About