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道县锰矿冶炼厂综合利用本县后江桥铁锰矿资源,采用单一的铁锰矿冶炼,摸索出火法富集同步两种合格产品——富锰渣和炼钢生铁的新工艺,同时还回收铅银。1988年
Daoxian manganese ore smelter comprehensive utilization of the county post-Jiang iron ore manganese ore, a single ferromanganese smelting, explore the fire enrichment synchronization of two qualified products - manganese-rich slag and steel pig iron new technology, while also recovering lead silver. 1988