抄録
The present report is the result of the preliminary research for industrialization and the semi-industrial test for manufacturing sponge iron from a hematite with Iittle silica; and the result of aetual melting tegt for the application of hematite to the basic electric arc furnace. Hematite ore was prepared in particles with the size 3-15mm and reduced at about 1000°C with coal, consequently yielding a sponge iron of which the metallic iron is 70-80% and the reduction rate above 90%.
When the hematite was used for the charge into the electric arc furnace. about 10% increase in electric power and melting hours was observed than in the all-scrap method. The product was found to be of good quality.
