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Thermal reduction of EAF dusts by using BF dusts as a reducing agent
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
2005 (English)In: Proceedings of the REWAS '04: Global Symposium on Recycling, Waste Treatment and Clean Technology held in Madrid, Spain, September 26 - 29, 2004 : [also served as the TMS 2004 Fall Extraction and Process Metallurgy Meeting], Minerals, Metals & Materials Society, 2005, p. 2751-2760Conference paper, Published paper (Refereed)
Abstract [en]

The investigation of the thermal reduction of Electric Arc Furnace Dust (EAFD) by Blast Furnace Dust (BFD) was carried out using simultaneous thermogravimetric analysis (STA) coupled with Quadrupole Mass Spectroscopy (QMS). Chemical and mineralogical analyses were also employed. EAF Dust, which mainly consists of higher zinc compounds as Zincite (ZnO) and Franklinite (ZnFe2O4), is produced in electric arc furnaces (EAF). Blast furnace dust (BFD) with a carbon-iron rich, flue by-product released in the iron-making process was used as a reductant agent. Both raw materials were examined individually in different controlled atmospheres of Ar, air and CO 2 between 20° and 1400°C. Different parameters such as effect of reaction atmosphere, temperature and quantity of the reductant agent were explored. The products of reaction were examined by x-ray diffraction (XRD) as well as the gaseous substances evolved in the reactions. The results indicated that, at 1300°C in Ar atmosphere, a complete reduction of oxide compounds contained in both samples is achieved with a 33 % reductant mixture

Place, publisher, year, edition, pages
Minerals, Metals & Materials Society, 2005. p. 2751-2760
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-32893Local ID: 78a27770-fcd1-11dc-a946-000ea68e967bISBN: 84-95520-06-0 (print)OAI: oai:DiVA.org:ltu-32893DiVA, id: diva2:1006127
Conference
Global Symposium on Recycling, Waste Treatment and Clean Technology : 26/09/2004 - 29/09/2004
Note
Godkänd; 2005; 20080328 (cira)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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Menad, NourreddineYang, Qixing

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