Abstract
During the period from April to October 1954, the test had been carried out to study the size of charging materials and the relation between the blast furnace condition and the size of charging materiais in Higashida No. 6 blast furnace of Yawata Works.
In case of using sintered ore at the extent of 40%, the best result was obtained when the various materials were charged with the following size:
Especially when high grade lump ores were used for the test, operation was carried out with 0.597 coke ratio.
The relation between ore size, permeability in the furnace and reducibility of ore is very important. Much studies on the above factors have to be made and the results thus obtained shall be applied actually in the treatment of raw materials.
