国内某赤铁矿矿石工艺矿物学研究  

Study on Process Mineralogy of a Hematite Ore in China

作　　者：郭风芳[1] 朱智超 兰舟[1] 黄秋菊 GUO Fengfang;ZHU Zhichao;LAN Zhou;HUANG Qiuju(Hainan Mining Co.,Ltd.;Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.;National Engineering Research Center of High Efficiency Cyclic Utilization of Metal Mineral Resources)

机构地区：[1]海南矿业股份有限公司,海南省昌江县572700 [2]中钢集团马鞍山矿山研究总院股份有限公司 [3]金属矿产资源高效循环利用国家工程研究中心

出　　处：《现代矿业》2024年第6期143-146,共4页Modern Mining

摘　　要：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5~30μm。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 5~30μm.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.

关 键 词：赤铁矿 工艺矿物学 嵌布特征 单体解离度 

分 类 号：TD951[矿业工程—选矿]