Foaming in Electric Arc Furnace: Part I: Laboratory Studies of Enthalpy changes of Carbonate Additions to Slag Melts
2011 (English)In: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, Vol. 42, no 1, 20-29 p.Article in journal (Refereed) Published
In the present work, a modified thermal analysis technique was used for studying the heat effect of slag foaming with carbonates addition. Experiments were conducted by sinking limestone and dolomite pieces of defined shapes (together with iron sinkers) in molten slag and monitoring the temperature changes accompanying the decomposition of carbonates. The heat effects of dolomite and limestone decompositions were determined at 1623 K (1350 A degrees C) and 1673 K (1400 A degrees C). It was found that the decomposition energy for dolomite and limestone for the studied slag composition is in the range of 56 to 79 pct of theoretical values, which is linked to the energy-saving effect of slag foaming. No influence of sample shape on decomposition energy was found for both limestone and dolomite.
Place, publisher, year, edition, pages
2011. Vol. 42, no 1, 20-29 p.
Decomposition energy, Electric arc furnace, Energy-saving effect, Enthalpy change, Heat effect, Laboratory studies, Molten Slag, Sample shape, Slag compositions, Slag foaming, Slag melt, Temperature changes, Theoretical values, Thermal analysis techniques, Carbonates, Decomposition, Electric arcs, Furnaces, Limestone, Thermoanalysis
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-24522DOI: 10.1007/s11663-010-9447-4ISI: 000286942500005ScopusID: 2-s2.0-79951512284OAI: oai:DiVA.org:kth-24522DiVA: diva2:351263
QC 20100913 Uppdaterad från submitted till published (20110318).2010-09-132010-09-132011-03-18Bibliographically approved