摘要
对山东某铁矿进行工艺矿物学研究,研究结果表明:原矿全铁品位为39.49%,其中有害元素P较低,但S元素稍高。铁矿物主要是磁铁矿和赤铁矿,次为假象赤铁矿,此外还可见一定量褐铁矿分布,四者含量合计为52.4%;铁矿物粒度分布极不均匀,在-0.15+0.052mm和-0.026+0.019mm之间铁矿物分布较多,分别达64.31%和8.64%。其中高达11.77%的铁矿物小于0.037mm,样品中铁矿物单体为78.7%。结合现场取样分析,建议磁选过程中适当降低给矿量,并合理提高磁选的磁场强度;在现有磨矿细度条件下,进一步强化磁选作业将铁精矿中单体脉石有效去除以提高铁精矿质量。
The process mineralogy of an iron ore in Shandong was studied. The results showed that the full iron grade of raw ore was 39.49-, among which the harmful element P was low but the S element was slightly high. Iron minerals were mainly magnetite and hematite, then the martite. Besides, a certain amount of limonite was also distributed in the ore. The content of above four minerals was 52.4% in total. The particle size distribution of iron ore was extremely uneven. And particle size distribution of iron minerals was much in the range of -0.15＋0.052 mm and -0.026＋0.019 mm, respectively reached 64.31% and 8.64%. The particle size of iron mineral up to 11.77% was less than 0.037 mm, and the iron mineral monomer in the sample was 78.7 %. Combined with field sampling and analysis, it was suggested that the quantity of ore feed should be reduced appropriately in magnetic separation process, and the magnetic field intensity of magnetic separation should be reasonably improved. Under the condition of existing grinding fineness, further strengthening magnetic separation operation could effectively remove single gangue in iron concentrate, so as to improve the quality of iron concentrate.
作者
李茂林
邓小龙
刘旭
崔瑞
LI MaoLin;DENG Xiaolong;LIU Xu;CUI Rui(School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan,Hubei 430081,China;Key Laboratory of Efficient Utilization of Metallurgical Mineral Resources and Agglomeration of Hubei Province,Wuhan,Hubei 430081,China;Changsha Research Institute of Mining and Metallurgy Co.,Ltd,Changsha,Hunan 410012,China)
出处
《矿业研究与开发》
CAS
北大核心
2018年第10期95-100,共6页
Mining Research and Development
关键词
铁矿
工艺矿物学
连生体
Iron ore
Process mineralogy
Coenobium
