Abstract
High-temperature melting is indispensable for the production of high strength cast iron. The results of experiments and the theoretical investigations made on the operation for high temperature melting shall be announced in this paper and the author intends to derive the most favourable condition of such operation from those results. The distribution of temperature, height of bed coke, blast volume, coke ratio, composition of efluent gas were measured in the small cupola having 460 mm of inside diameter of cupola lining, and the relationship between those factors and the tapping temperatures was analized. The recommended practice to get the molten metal of 1530°C tapping temperature is described as follow : [Written in non-displayable characters.]. The molten metal attaining the required goal mentioned above was obtained when the practical operation was carried in the cupola having the inside diameter of lining 770 mm under the suggested operating conditions. Besides, it is earnestly desired to take good precautions not only in preparations from lighting to blast-on. but also in charging so that it may be executed in orderly fashion with constant coke size and melting stock.
