一、问题的提出:据已知勘探资料说明,我国富锰矿较少,贫锰矿又含杂质较高(Fe、P)。因此在生产中低碳锰铁时,有的厂尚可贫富搭配进行冶炼,有的厂则需用选后富烧结矿或富锰渣进行冶炼。基于我国锰矿特点,各厂通过长期生产实践或科学试验,都作了不少有益的 First, the issue put forward: According to the known exploration data shows that less manganese rich ore, poor manganese ore and impurities (Fe, P). Therefore, in the production of low-carbon ferromanganese, some plants are still rich and poor with smelting, and some plants need to use after the election rich sinter or manganese-rich slag smelting. Based on the characteristics of China’s manganese ore, the plant made a lot of useful and long-term production practices or scientific experiments