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现代矿业 ›› 2024, Vol. 40 ›› Issue (06): 143-.
为给国内某赤铁矿矿石可选性试验提供依据，进行了工艺矿物学研究。矿石铁品位为
34.16%，主要有用铁矿物赤铁矿含量为 40.66%，次要铁矿物褐铁矿含量为 9.90%。矿石构造主要有
块状构造、浸染状构造和条带状构造，矿石结构主要为针状结构、网眼状结构、包含结构、粒状结构、
浸染状结构、斑状结构、交代结构。赤铁矿主要呈针状、纤维状集合体与脉石矿物共生嵌布，嵌布粒
度 5～30 μm。褐铁矿主要呈胶状或斑状嵌布，嵌布粒度 0.07 mm 以下。赤铁矿、褐铁矿在-0.01 mm
粒级分布率分别为46.48%、27.14%，这部分微细粒铁矿物很难完全解离。石英的嵌布粒度粗细不均，
在-0.07 mm粒级分布率为53.91%，这部分石英呈碎屑状、细粒浸染状分布于铁矿物中，不易和铁矿物
解离。根据分析结果，推荐采用阶段磨选工艺选别。
In order to provide a basis for the beneficiation test of a hematite ore in China, a process
mineralogy study was carried out. The iron grade of the ore is 34.16%, the main useful iron mineral hematite
content is 40.66%, and the secondary iron mineral limonite content is 9.90%. The ore texture mainly in⁃
cludes block texture, disseminated texture and banded texture. The ore structure mainly includes needle
structure, mesh structure, inclusion structure, granular structure, disseminated structure, porphyritic struc⁃
ture and metasomatic structure. The hematite is mainly needle-like and fibrous aggregates symbiotically em⁃
bedded with gangue minerals, with an embedded particle size of 5~30 μm. Limonite is mainly colloidal or
porphyritic, and the disseminated particle size is less than 0.07 mm. The distribution rates of hematite and li⁃
monite in the -0.01 mm fraction are 46.48% and 27.14%, respectively. This part of fine-grained iron miner⁃
als is difficult to be dissociated completely. The dissemination size of quartz is uneven, and the distribution
rate of -0.07 mm particle size is 53.91%. This part of quartz is clastic and fine-grained disseminated in iron
minerals, which is hard to liberate from iron minerals. According to the analysis results, the stage grinding
stage separation process is recommended.
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