The Kukioka No. 2 blast furnace at Yawata has a production of 700 tons of basic pig iron per day. It was constructed in October 1933
The main dimensions of this furnace are as following; total height 24m., bosh diameter 7·4m., hearth diameter 6·7m., bosh angle 83°31′, bosh height 3·1m., total inner volume 837m
3. The shaft is entirely surrounded with a steel plate shell.
For the handling of the raw materials, tracks, ore bridge transporters, belt conveyors, transfer cars, larry cars and the skip filling type of hoisting device have been provided.
The blower is a single tandem double acting four cycle gas blowing engine which is rated at 4, 800H.P. and delivers 1, 900m
3 of air per minute. In order to clean the blast furnace gas, the Cottrell electrical precipitators have been adopted.
The cleaned gas is used for hot stoves, coke ovens, gas boilers, gas engine blowers, soaking pits and other heating furnaces.
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