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Journal of Iron and Steel Research International

Erschienen in:

19.07.2018 | Original Paper

Desulfurization thermodynamics experiment of stainless steel pickling sludge

verfasst von: Xiao-ming Li, Ming Lv, Wei-dong Yin, Jun-xue Zhao, Ya-ru Cui

Erschienen in: Journal of Iron and Steel Research International | Ausgabe 5/2019

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Abstract

A technical idea of returning stainless steel pickling sludge to smelting process so as to recycle valuable metals of Fe, Cr, and Ni was proposed, expecting to realize sludge detoxification and resource utilization. Thermodynamics calculation showed that not only most valuable elements including Fe, Cr and Ni, but also the harmful element of sulfur in pickling sludge can be enriched into molten metal. As a result, a theoretical study on desulfurization thermodynamics of sludge pre-treatment was conducted, and results indicated that complete desulfurization temperature of pure pickling sludge was above 1400 °C. When 0.5–0.8% carbon was added as reducing agent, the complete desulfurization temperature was reduced to 1000 °C or below. Desulfurization roasting experiment indicated that desulfurization rate at 1400 °C under inert environment was 78.74% and maximum desulfurization rate at 1000 °C under reducing environment was 91.62%.

Vorheriger Artikel Influence of carbon content on microstructure and mechanical properties of 1000 MPa deposited metal by gas metal arc welding

Nächster Artikel Dynamic forecasting and optimal scheduling of by-product gases in integrated iron and steel works

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Titel: Desulfurization thermodynamics experiment of stainless steel pickling sludge
verfasst von: Xiao-ming Li
Ming Lv
Wei-dong Yin
Jun-xue Zhao
Ya-ru Cui
Publikationsdatum: 19.07.2018
Verlag: Springer Singapore
Erschienen in: Journal of Iron and Steel Research International / Ausgabe 5/2019
Print ISSN: 1006-706X
Elektronische ISSN: 2210-3988
DOI: https://doi.org/10.1007/s42243-018-0113-4

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