Traditional Steelmaking in Southwestern Ethiopia: A Metallurgical Analysis

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説明

<p>We documented the reconstruction by local blacksmiths of obsolete traditional steelmaking methods in Dime, southwestern Ethiopia, and metallurgically analyzed the materials and products associated with this technology. The steelmaking operation was successfully recreated in 2004, including mining, furnace construction, and charcoal production. The produced sponge iron had a yield ratio of about 40%, contained 0.31~0.48 mass percent carbon, and lacked impurities. The collected slag contained typical components (iron, silicon, aluminum, potassium, phosphorous, titanium, manganese). The blacksmiths used three kinds of iron ore (balt, bullo, gachi) that consisted primarily of goethite [α-FeO(OH)] and kaolinite (Al2O3 · 2SiO2 · 2H2O); white inclusions in gachi contained calcium phosphate hydrate [Ca3(PO4)2 · xH2O]. The local blacksmiths specifically preferred gachi for steelmaking; the reasons for this selection were discussed from the viewpoint of slag-forming ability. Comparison of Dime steelmaking with other traditional steelmaking methods confirmed the independent development of geographically specialized knowledge and steelmaking techniques in Dime, as in Europe and Japan.</p>

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詳細情報 詳細情報について

  • CRID
    1390568617217176832
  • NII論文ID
    130007983691
  • DOI
    10.11198/niloethiopian.2010.14_1
  • ISSN
    18811175
    1340329X
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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