出土鉄滓の化学成分評価による製鉄工程の分類(鉄関連遺物の分析評価)(Part-1. 鉄の歴史 : その技術と文化)(<特集>鉄の技術と文化および循環型社会)

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The results of chemical compositions for excavated slag were drawn as figures of the relation between T Fe and TiO_2, and the relation be tween T Fe and SC (slag component defined as SC=SiO_2+A;_2O_3+CaO+MgO) The excavated slag can be classified to 6 regions of ironmaking process and forging process as follows, 1 Smelting slag of iron-sand process, 2 Refining slag of iron-sand process, 3 Forging slag, 4 Slag adhered to renfractory clay, 5 Smelting slag of iron-ore process, and 6 Semi-reduced iron-sand The extrapolated and specified points of analyzed data as described in Fig 2 were referred to the phase diagram for FeO-Si0_2-Ti0_2 system Resultant classification of excavated slag for the iron-making processes assisted by phase diagram was obtained as shown in Table 4 Accordingly, it may be concluded that at most high content of Ti0_2 or at lower content of TiO_2 in the raw material of iron-sand, the smelting process of generated liquid-slag would be happened under nearly same conditions as smelting temperature (about 1250℃) and slag component (about SC=30% constant)
社団法人日本鉄鋼協会の論文
2005-01-01