日本第一台闪速炉1956年建于足尾冶炼厂。经过多次改进,1962年生产能力增加到最初的三倍。在利用反应热及提高硫的回收率进而减少污染等方面,闪速熔炼有着巨大的优越性。但由于渣中铜损失高,锅炉故障多及耐火材料损坏等问题,初期的作业率並不高。古河公司足尾冶炼厂的工程师们逐个解决了这些问题,并协助建设了如下的闪速冶炼厂: Japan’s first flash furnace built in 1956 at foot tail smelter. After many improvements, production capacity in 1962 increased three times initially. Flash smelting has great advantages in utilizing heat of reaction and increasing sulfur recovery rate to reduce pollution. However, because of the high copper loss in the slag, the failure of the boiler and the failure of refractory materials, the initial operating rate is not high. Engineers at Furukawa-Takeshi refinery solved these problems one by one and helped to establish the flash smelter as follows: