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Property measurements toward understanding process phenomena: Application of thermal diffusivities in the characterization of cokes and mold fluxes
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2005 (English)In: Iron & Steel Technology, ISSN 1547-0423, Vol. 2, no 8, 133-142 p.Article in journal (Refereed) Published
Abstract [en]

In an effort toward developing experimental tools for understanding process phenomena, thermal diffusivities of metallurgical cokes as well as mold fluxes have been measured between room temperature and 1,623 K and between room temperature and 1,023 K, respectively, in a flow of purified argon using a laser flash technique in order to set forward the application of thermal diffusivities in the characterizations of cokes and mold fluxes. Thermal diffusivities of cokes and mold fluxes are found to increase with increasing degree of crystallization. The results imply that the thermal diffusivity of cokes could be a good indicator of reactivity. Furthermore, the thermal diffusivities of coke samples taken from various places of a blast furnace could give some information regarding the thermal history of the sample, and thus an idea regarding the temperature distribution of the blast furnace. The thermal diffusivities of the mold fluxes in crystalline state decrease with increasing temperatures at lower temperatures and are constant at higher temperatures.

Place, publisher, year, edition, pages
2005. Vol. 2, no 8, 133-142 p.
Keyword [en]
Blast furnaces, Carbon dioxide, Coke, Crystallization, Gasification, Slags, Thermal diffusion in solids, Thermal effects, Ash content, Mold fluxes, Reactivity, Steel grades, Steelmaking
National Category
Metallurgy and Metallic Materials
URN: urn:nbn:se:kth:diva-156691ScopusID: 2-s2.0-23444433746OAI: diva2:768106

QC 20141203

Available from: 2014-12-03 Created: 2014-12-02 Last updated: 2014-12-03Bibliographically approved

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