SOME CONSIDERATION OF BLAST FURNACE OPERATION.

The author made some consideration of a blast furnace which is acting in basic operation, at Yawata Iron Work of Japan Iron Mfg Co, Ltd (Nippon Seitetu K.K. Yawata Seitetuzyo) with regard to various furnace conditions of the blast furnace core and experimented on the moderate diameter of the core has intimate relation the oxidizing zone of the furnace The clearance of furnace wall and core is 2·5m maximum, depending on hearth temperatures. Considerations on the blast temperature, the blast pressure, the blast amount, the coke and the cause of hanging etc. were described in general. The moderate tuyere diameter is 0·097 of the Length of the hearth circumference.