含チタン砂鉄鉱の還元条件が銑鉄成分におよぼす影響 : 砂鉄の電気炉製錬法に関する研究 I

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The fundamental studies on the reducing smelting of iron ore and iron sand were researched by many authors. However in these researches, ores of solid state were reduced with reducing agent of gaseous state, it seemed to be not yet reported in details on the reducing smelting in molten state of these. The authors reduced ore and flux in molten state and studied on influence of the reducing conditions on the chemical composition of pig iron. When iron ore and iron sand were reduced in various reducing conditions, the results were summarized as follows : 1) With increase of reducing temperature, Si, Mn and Ti content of pig iron were increased, S content decreased and P and V content did not change. 2) With increase of slag basicity (%ΣCaO/%ΣSiO_2), Si and S content of pig iron were decreased, Mn content was increased, Ti content was increased gradually and V content did not change. 3) With increase of ΣTiO_2 content in slag, Si, Mn and S content of pig iron was decreased gradually and Ti content was increased to the constant value on the same conditions but did not increase more than its value. 4) When the reduction of iron sand in comparison with iron ore at the same conditions, in general, the one obtains high C and low Si content of pig iron and the other obtains low C and high Si content of pig iron. 5) Constituent range indicates the lowest melting temperature (1260°∿1310℃) of TiO_2 containing slag exists between ΣTiO_2 content in slag-20∿25% and slag basicity %ΣCaO/%ΣSiO_2=0.7∿0.8.
社団法人日本鉄鋼協会の論文
1960-04-01

含チタン砂鉄鉱の還元条件が銑鉄成分におよぼす影響 : 砂鉄の電気炉製錬法に関する研究 I

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