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现代矿业 ›› 2024, Vol. 40 ›› Issue (03): 140-143.
某铁矿为高效回收利用西部低品位难选矿石，对西部矿石进行了详细的工艺矿物学研 究。研究结果表明：该矿石全铁品位为37.25%，有用矿物主要为磁铁矿和赤（褐）铁矿，分布率分别为 90.85% 和 4.27%，主要杂质 SiO2含量 21.97%；该矿石主要具块状构造和层状结构。矿石中的磁铁矿 主要呈细粒集合体嵌布，与脉石关系紧密，不易解离，磁铁矿在-0.07 mm粒级的分布率为83.58%；赤 铁矿主要为次生假象矿，原生矿较少，赤铁矿相对磁铁矿结晶粒度更为细小，全部分布在-0.07 mm粒 级；主要脉石矿物云母、碳酸盐矿物的嵌布粒度相对铁矿物较粗，云母在-0.07 mm 粒级的分布率为 61.38%，碳酸盐矿物粒度呈粗粒分布，在+0.07 mm粒级的分布率为58.50%。
In order to efficiently recover and utilize the low-grade refractory ore in an iron mine of the west，a detailed process mineralogy study was carried out on the ore in the west.The results show that the to⁃ tal iron grade of the ore is 37.25%，the useful minerals are mainly magnetite and hematite（limonite），the distribution rates are 90.85% and 4.27% respectively，and the main impurity SiO2 content is 21.97%. The ore mainly has massive structure and layered structure.The magnetite in the ore is mainly embedded in fine aggregates，which is closely related to gangue and is not easy to dissociate. The distribution rate of magnetite in the -0.07 mm fraction is 83.58%. Hematite is mainly secondary illusory ore，with less primary ore. The crystal size of hematite is smaller than that of magnetite，and all of them are distributed in -0.07 mm parti⁃ cle size.The grain size of mica and carbonate minerals is coarser than that of iron minerals.The distribution rate of mica in -0.07 mm fraction is 61.38%，the particle size of carbonate minerals is coarse，and the distri⁃ bution rate of + 0.07 mm is 58.50%.
摘要： 某铁矿为高效回收利用西部低品位难选矿石，对西部矿石进行了详细的工艺矿物学研 究。研究结果表明：该矿石全铁品位为37.25%，有用矿物主要为磁铁矿和赤（褐）铁矿，分布率分别为 90.85% 和 4.27%，主要杂质 SiO2含量 21.97%；该矿石主要具块状构造和层状结构。矿石中的磁铁矿 主要呈细粒集合体嵌布，与脉石关系紧密，不易解离，磁铁矿在-0.07 mm粒级的分布率为83.58%；赤 铁矿主要为次生假象矿，原生矿较少，赤铁矿相对磁铁矿结晶粒度更为细小，全部分布在-0.07 mm粒 级；主要脉石矿物云母、碳酸盐矿物的嵌布粒度相对铁矿物较粗，云母在-0.07 mm 粒级的分布率为 61.38%，碳酸盐矿物粒度呈粗粒分布，在+0.07 mm粒级的分布率为58.50%。
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