高温度酸素富化送風による大型自溶炉の開発について
1972 年 88 巻 1013 号 p. 411-415
詳細
1972 年 88 巻 1013 号 p. 411-415
The Saganoseki Smelter began operations in 1916 using blast furnace process and in 1966 the monthly smelting capacity had reached 20, 000 tons of copper concentrate, with two blast furnaces and five converters using oxygen enriched air. Due to rapidly increasing demand for copper in Japan, it became necessary to build a larger facility.
After studying comparative merit of various processes in their capacity, pollution control capability, construction and operation cost, etc., it was concluded that the flash smelting process would be the best, provided that it can treat 40, 000 tons of concentrate per month by one furnace. Upon having confirmed the capability through exhaustive experiments with a test furnace, the Nikko Process flash smelting furnace using high temperature oxygen enriched blast and capable of treating 40, 000 tons of concentrate per month was constructed by the end of 1969, and since then it is operating satisfactorily.
