抄録
In our Country, where there is few Massive iron ore, it is very important to utilze iron sand; and some people are having interest to investigate them, but no experimental report which succeeded industrially are received. The most advantogeous method to treat iron sand is to make spongy iron, and Tokiwa Co. succeeded. in some degree in this process at Kuji recently.
Kuji Steel Works held Anderson-Thornhill process. First dried iron sand is reduced at low temp. (1, 000°C) and then is magnetically separated and at last briquetted.
We made spongy iron and then made steel using this spongy iron in an Electric furn ace. Composition of this spongy iron was total Fe 80%; reduced Fe 56% and TiO2 15%.
When 1/3 of total charge, there is no obstruction, but exceeding this 1/3 many obstacles were found and We must put out almost all of slag, and add limestone. For these reason working time becomes long. So expence per 1 ton is increased. Then from our experiment, it is seemed tbat this is no profitable industrially unless the cost of ore containing 85% of reduced iron is ¥2600 per 1 ton and the cost of electric power is 1 sen per 1 K.W.H.
