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Effect of reduction conditions on the swelling behaviour of cement-bonded briquettes
Luleå tekniska universitet.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
2004 (English)In: ISIJ International, ISSN 0915-1559, E-ISSN 1347-5460, Vol. 44, no 2, 294-303 p.Article in journal (Refereed) Published
Abstract [en]

Cement-bonded agglomerates of by-products generated in iron and steel plants are commonly used as burden material for blast furnaces. It has been observed that under certain conditions the briquettes containing pellet-fines show a tendency to swell catastrophically when reduced at 900-1 000 deg C using carbon monoxide as reducing agent. This swelling is dependent upon a number of factors like: reducing temperature, reducing conditions and composition of reducing gas. The optical micrographs do not show the formation of iron whiskers as the cause of swelling; instead, the reduced iron particles seem to move apart, thereby causing swelling. This paper describes the effect of various parameters that cause the abnormal swelling of briquettes.

Place, publisher, year, edition, pages
2004. Vol. 44, no 2, 294-303 p.
Research subject
Process Metallurgy
URN: urn:nbn:se:ltu:diva-2844DOI: 10.2355/isijinternational.44.294Local ID: 08f299e0-ec2a-11db-88eb-000ea68e967bOAI: diva2:975698
Validerad; 2004; 20061109 (ysko)Available from: 2016-09-29 Created: 2016-09-29Bibliographically approved

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