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日本足尾冶炼厂在以前是一个采用鼓风炉熔炼法生产的炼铜工厂。1956年2月建成闪灼熔炼炉,同时建设160(吨/日)能力的硫酸工厂。1962年将产量扩大到为原来的三倍,并增建了能力为210(吨/日)的硫酸工厂。这样,足尾厂的生产能力就达到了年产粗铜35000吨、硫酸120000吨的水平。足尾厂的闪灼熔炼炉是从芬兰引进的,经过七年的实践,在许多技术方面得到了改进,于1962年扩
Nippori Footwiches Smelter was a copper smelter that used blast furnace smelting in the past. In 1956 February built flash burning smelting furnace, while the construction of 160 (ton / day) capacity of sulfuric acid plant. In 1962 the production was expanded to three times the original, and the additional capacity of 210 (ton / day) sulfuric acid plant. In this way, the production capacity of foot plant reached an annual output of 35,000 tons of blister copper, 120000 tons of sulfuric acid level. The foot-burning plant in Fukushima was introduced from Finland. After seven years of practice, it has been improved in many technical aspects and expanded in 1962