Heat Losses to Furnace Coolers as a Function of Process Intensity

Autor:	M. W. Kennedy, H. Haaland, A. MacRae
Rok vydání:	2016
Předmět:	Superheating Brick Materials science Heat flux visual_art Smelting Heat transfer Metallurgy visual_art.visual_art_medium Slag Thermodynamics Heat transfer coefficient Intensity (heat transfer)
Zdroj:	7th International Symposium on High-Temperature Metallurgical Processing ISBN: 9783319486178 7th International Symposium on High-Temperature Metallurgical Processing
DOI:	10.1002/9781119274643.ch32
Popis:	Furnace refractories are in most cases chemically incompatible with smelter slag, which leads to a steady erosion in their thickness over time. Once too thin, refractory walls become mechanically unstable and catastrophic failure can result. Historically, external shell cooling was applied to generate a freeze lining of slag and thus prevent refractory erosion. Many modern high intensity smelting furnaces instead maintain their physical integrity by the use of internally cooled wall panels, plates or finger coolers. An initial refractory lining is often installed inside of the coolers, such that the furnace originally operates with a temperature (insulated) rather than a heat flux (freeze lined) boundary condition. This paper examines the change in slag-wall heat transfer coefficient and slag superheat as a function of process intensity. The implications of the changes in heat transfer on residual brick thickness are explored using analytical modelling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c129bc435c5044961eb564cef81c34d https://doi.org/10.1002/9781119274643.ch32 Zobrazit plný text záznamu