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一、概论锰对钢铁工业的发展有密切关系。根据铁合金冶炼的要求,锰矿石可分为四级(表1)。我国锰矿资源是十分丰富的,但是,能直接利用的锰矿石却较少。有大量的贫锰矿需要经过选矿加工。我国锰矿石选矿的目的一般来说,除提高含锰量以外,对于碳酸盐类的锰矿石主要是降低磷、硫含量,对于次生氧化锰矿石主要是降低铁含量,至于原生的氧化物锰矿石,一般只经过重选即可得到合格锰精矿。我国的次生氧化锰矿石的储量较大,本文所要讨论的含铁贫锰矿石,就是这类矿石中的一种。
I. Introduction Manganese is closely related to the development of the steel industry. According to the requirements of ferroalloy smelting, manganese ore can be divided into four levels (Table 1). Manganese resources in our country is very rich, but less direct use of manganese ore. A large number of poor manganese ore needs dressing. Manganese ore beneficiation purposes in our country In general, in addition to increasing the manganese content, the carbonate manganese ore is mainly to reduce phosphorus and sulfur content, for secondary manganese oxide ore is mainly to reduce the iron content, as native manganese oxide Ore, generally only after re-election to be qualified manganese concentrate. China’s secondary manganese oxide ore reserves are larger, iron-depleted manganese ore to be discussed in this article, is one of such ores.