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Deposit formation in a grate-kiln plant for iron-ore pellet production: Part 2: Characterization of deposits
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-9395-9928
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
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2013 (English)In: Energy & Fuels, ISSN 0887-0624, E-ISSN 1520-5029, Vol. 27, no 10, p. 6171-6184Article in journal (Refereed) Published
Abstract [en]

Buildup of deposit material in chunks on refractory linings caused by combustion of various fuels is a well-known problem. This study characterizes the short-term deposits on refractory material in a grate–kiln process, carried out through in situ measurements using a water-cooled probe with a part of a refractory brick mounted in its end. Sampling was carried out during combustion of both oil and coal. A significant difference in deposition rates was observed; deposition during oil firing was negligible compared to coal firing. The deposits are mainly hematite particles embedded in bonding phase, mainly comprising Si, Al, Fe, Ca, and O. Moreover, it was found that the prevailing flue-gas direction determines the formation of the deposits on the probe and that inertial impaction controls the deposition rate. However, this rate can also be affected by the amount of air-borne particles present in the kiln.

Place, publisher, year, edition, pages
2013. Vol. 27, no 10, p. 6171-6184
National Category
Other Materials Engineering Energy Engineering
Research subject
Engineering Materials; Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-6117DOI: 10.1021/ef4009746ISI: 000326126700066Scopus ID: 2-s2.0-84886024325Local ID: 45127016-13d8-41a3-9d0a-8488f256c597OAI: oai:DiVA.org:ltu-6117DiVA, id: diva2:978994
Note
Validerad; 2013; 20130722 (ohmmar)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Stjernberg, JesperJonsson, CarrieWiinikka, HenrikLindblom, BoÖhman, Marcus

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