Abstract
Although the success of Heroult electric furnace operations in steel casting depends so largely on the possibility of getting proper refractory materials as a silica brick for the roof bricks of these furnaces, it can hardly be said that our getting of them is in a satisfactory condition during the war times.
Utilizing of schamotte bricks instead of silica bricks has been tried as the refractory materials for roof and wall of furnace. As the refractoriness of a schamotte brick, however, is inferior to that of silica brick, one raw silica brick instead of two is used on every side of electric pole. From the results of trial, it must be confessed that the using schamotte bricks will not deny the electric furnace operations in steel foundry to us, in other words the operation using schamotte bricks for silica bricks have been done satisfactorily as before.
We, therefore, report the actual results of our trial for steel melting engineers in this paper. (N. T.)
