鞍千磁铁矿工艺矿物学研究  

Research on Process Mineralogy of Anqian Magnetite Ore

作　　者：王长艳 徐冬林 史达 韦文杰 张玲 刘杰[2] Wang Changyan;Xu Donglin;Shi Da;Wei Wenjie;Zhang Ling;Liu Jie(Anqian Mining Co.,Ltd.,Anshan Iron and Steel Group,Anshan,Liaoning,China;School of Resources and Civil Engineering,Northeastern University,National-Local Joint Engineering Research Center of Refractory Iron Ore Resources Efficient Utilization Technology,Shenyang,Liaoning,China)

机构地区：[1]鞍钢集团鞍千矿业责任有限公司,辽宁鞍山114043 [2]东北大学资源与土木工程学院,难采选铁矿资源高效开发利用技术国家地方联合工程研究中心,辽宁沈阳110819

出　　处：《矿产综合利用》2022年第4期193-199,共7页Multipurpose Utilization of Mineral Resources

摘　　要：近年来鞍千地区采出矿石性质变化较大,为给该矿石选矿工艺流程的制定提供依据,有必要对其进行详尽的工艺矿物学研究。本文借助光学显微镜、化学分析、X射线衍射等分析检测手段,对鞍千区域矿石样本的化学组成、矿物组成、浸染粒度及嵌布特性施行了综合而系统的研究。研究结果表明:矿石中铁品位为29.25%,主要含铁矿物为磁铁矿、赤铁矿、褐铁矿、黄铁矿,其中磁铁矿含量31.65%,赤铁矿含量6.53%,为磁铁矿型铁矿石;脉石以石英为主,含量达45.44%,其次为角闪石。矿石中赤铁矿中自形晶结构较为多见,磁铁矿中半自形晶结构较为多见,个别磁铁矿为两种及两种以上矿物间的交代构造。磁铁矿与赤铁矿的粒度不匀,可择取多段磨矿多段磁选选别工艺。In recent years,the properties of the ore mined in the Anqian area have changed greatly.In order to provide a basis for the formulation of the ore beneficiation process,it is necessary to carry out detailed process mineralogical research.In this paper,with the help of optical microscope,chemical analysis,X-ray diffraction and other analysis and detection methods,a comprehensive and systematic study on the chemical composition,mineral composition,dissemination particle size and inlay characteristics of the ore samples in the Anqian area was carried out.Research results show that the iron grade in the ore is 29.25%,and the main iron-bearing minerals are magnetite,hematite,limonite,and pyrite.The magnetite content is 31.65%and the hematite content is 6.53%.Iron ore type iron ore;gangue is mainly quartz,with a content of 45.44%,followed by hornblende.The automorphic crystal structure is more common in hematite in the ore,and the semi-automorphic crystal structure is more common in the magnetite.Individual magnetite is an alternate structure between two or more minerals.The particle size of magnetite and hematite is uneven,and the multi-stage grinding and multi-stage magnetic separation process can be selected.

关 键 词：矿物学 嵌布特征 磁铁矿 矿物组成 

分 类 号：TD951[矿业工程—选矿]