Abstract
In Japan where the caking coal is lacking, the method of electric iron manufacture consuming cokes less than 400 kg per ton pig plays an important role in enhancing the production of iron. However, the construction and operation of electric high furnace (Elektrohochofen) for iron manufacture has all turned out in failure in the past years here. The cause of the failure seems to be the fact that the design of the furnace bas depended on the foreign invention. In answer to such state of matters, the author designed and constructed an electric furnace the most suitable for the present Japan. The present paper dealt with the process of its development. Several points of imporvement in the electrical, metallurgical and mechanical designs were described, the actual result of its operation demonstrated, and an optimum method suggested to attain to the maximum pig production with an electric high furnace.
