Archaeometallurgical Simulations of the Processes in Bloomery Furnaces from the Hallstatt and Medieval Period

Roland Haubner; Irmgard Schatz; Franz Schatz; Wolfgang Scheiblechner; Wolf Dieter Schubert; Susanne Strobl

doi:10.4028/www.scientific.net/MSF.782.641

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HomeMaterials Science ForumMaterials Science Forum Vol. 782Archaeometallurgical Simulations of the Processes...

Archaeometallurgical Simulations of the Processes in Bloomery Furnaces from the Hallstatt and Medieval Period

Abstract:

Bloomery furnaces were the first units for iron smelting. In the Hallstatt period small bowl-type furnaces were used and until the medieval period the size of such furnaces was increasing continuously. Experimental archaeologists reconstruct bloomery furnaces to study the processes of bloom production. In a small bowl-type furnace (Hallstatt period) at Asparn and in a larger shaft-type furnace (medieval period) at Ybbsitz smelting experiments were performed, The samples contained metallic iron and slag. Various amounts of iron in different stages of conglomeration up to larger iron pieces were found. The slag belongs to a fayalitic-type, consisting of wustite (FeO), fayalite (Fe₂SiO₄) and glass-phase (amorphous Ca-, Al-silicates) in various concentrations. The yield of metallic iron was highly different for the various experiments. In general, more metallic iron was formed in the larger shaft-type furnaces. A large bloom was not obtained.

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Periodical:

Materials Science Forum (Volume 782)

Pages:

641-644

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.782.641

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Online since:

April 2014

Authors:

Roland Haubner*, Irmgard Schatz, Franz Schatz, Wolfgang Scheiblechner, Wolf Dieter Schubert, Susanne Strobl

Keywords:

Bloomery Furnace, Fayalite, Iron Smelting, Slag

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