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预还原锰矿中铁的物相组成主要有金属铁、亚铁、高铁和碳化铁等。取1份试样用PbCl_2溶液选择浸取并测定金属铁;另取1份试样用FeCl_3溶液浸取后对残渣中分别用常法测定亚铁和高铁。碳化铁中的铁量由全铁量与金属铁、亚铁和高铁量之差值求得。
Pre-reduction of manganese ore in the phase composition of iron are mainly metal iron, ferrous, high-speed rail and iron carbide and so on. Take 1 part of the sample with PbCl 2 solution to select leaching and determination of metallic iron; another take a sample with FeCl 3 solution leaching, respectively, the residue were measured by conventional iron and high-speed ferrous. The amount of iron in the iron carbide is determined from the difference between the amount of total iron and the amount of metallic iron, ferrous and high-iron.