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Conversion Characteristics of Alternative Reducing Agents for the Bath Smelting Processes in an Oxidizing Atmosphere
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering. Central Metallurgical Research and Development Institute (CMRDI) Cairo, Egypt.ORCID iD: 0000-0002-2358-7719
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0001-6081-5736
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.ORCID iD: 0000-0003-1511-8020
2019 (English)In: Journal of Sustainable Metallurgy, ISSN 2199-3823, Vol. 5, no 2, p. 230-239Article in journal (Refereed) Published
Abstract [en]

The amount of plastic-containing materials, such as shredder residue material, which is generated after the processing of electronic equipment waste, is increasing. One interesting option for the sustainable management of these materials, instead of incineration or landfilling, is recycling through injection in a bath smelting process, such as zinc fuming. In this way, the plastic material could partially substitute coal as a reductant in the process. In such processes, shredder residue material is injected alongside air into the furnace at temperatures up to 1250 °C. Once the material is injected, it undergoes several conversion steps, including ignition, devolatilization, and char oxidation. In this study, the conversions of shredder residue material and other pure plastic materials were investigated using a drop tube furnace and an optical single-particle burner. The effect of particle size on the conversion time of each material was studied. The conversion time of the particles increases as the particle size increases, although the relationship is not linear. The results indicate that plastic materials with a particle size range of 1–7 mm have a considerably longer conversion time than that of coal used in the conventional processes.

Place, publisher, year, edition, pages
New York: Springer, 2019. Vol. 5, no 2, p. 230-239
Keywords [en]
Shredder residue materials, Thermal conversion, Oxidizing conditions, Drop tube furnace, Optical single- particle burner
National Category
Metallurgy and Metallic Materials Energy Engineering
Research subject
Process Metallurgy; Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-73269DOI: 10.1007/s40831-019-00217-xISI: 000471200800009Scopus ID: 2-s2.0-85062709413OAI: oai:DiVA.org:ltu-73269DiVA, id: diva2:1297575
Note

Validerad;2019;Nivå 2;2019-07-01 (johcin)

Available from: 2019-03-20 Created: 2019-03-20 Last updated: 2019-07-01Bibliographically approved

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Lotfian, SamiraAhmed, HeshamUmeki, KentaroSamuelsson, Caisa

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