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Thermal reduction of EAF dusts by using BF dusts as a reducing agent
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Industriell miljö- och processteknik.
2005 (engelsk)Inngår i: 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, s. 2751-2760Konferansepaper, Publicerat paper (Fagfellevurdert)
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

sted, utgiver, år, opplag, sider
Minerals, Metals & Materials Society, 2005. s. 2751-2760
HSV kategori
Forskningsprogram
Processmetallurgi
Identifikatorer
URN: urn:nbn:se:ltu:diva-32893Lokal ID: 78a27770-fcd1-11dc-a946-000ea68e967bISBN: 84-95520-06-0 (tryckt)OAI: oai:DiVA.org:ltu-32893DiVA, id: diva2:1006127
Konferanse
Global Symposium on Recycling, Waste Treatment and Clean Technology : 26/09/2004 - 29/09/2004
Merknad
Godkänd; 2005; 20080328 (cira)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2017-11-25bibliografisk kontrollert

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Totalt: 49 treff
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