Study on process mineralogy of vanadium-titanium magnetite concentrate in Chaoyang, Liaoning Province

被引：0
|
作者：
Chen W. [1 ]
Liang H. [1 ]
Gao Z. [1 ]
Xue X. [1 ]
机构：
[1] Institute of Resources & Environmental Engineering, School of Metallurgy, Northeastern University, Shenyang
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2020年 / 51卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Dissemination characteristic; Iron concentrate; Mineral dissociation degree; Process mineralogy; Vanadium titanium magnetite;
D O I：
10.11817/j.issn.1672-7207.2020.10.001
中图分类号：
学科分类号：
摘要：
In order to understand the causes of low grade of iron and high mass fraction of titanium in a magnetic separation iron concentrate from a vanadium-titanium magnetite in Chaoyang, Liaoning Province, a systematical investigation of process mineralogy, including the chemical composition, mineral composition, mineral dissemination characteristics, particle size distribution, occurrence state of valuable components and mineral dissociation degree of the iron concentrate, was carried out by the analysis of polycrystalline X-ray diffraction(XRD) and Bgrimm process mineralogy analyzing system(BPMA). The results show that the iron concentrate contains 43.75%(mass fraction) of total iron(TFe) and 21.54% of titanium dioxide(TiO2), and the titaniferous magnetite and ilmenite are the main minerals, whose mass fractions are 63.81% and 15.02%, respectively. In addition, there are a small amount of gangue minerals in the concentrate, including titanite, amphibole, pyroxene and quartz. The average particle size of the iron concentrate is 21 μm. However, there is still a considerable amount of titaniferous magnetite interlocking with micro-fine ilmenite particles in a state of lattice or fine vein, and parts of the two minerals are also associated with some gangue minerals. The main reasons for the low grade of iron and too high mass fraction of titanium in the concentrate can be attributed to the high mass fraction of titanium(about 10.99% of TiO2) of the titaniferous magnetite and its low dissociation degree(about 67%). The results can provide some valuable referances for optimizing the iron separation process of the vanadium-titanium magnetite in Chaoyang area so as to realize high efficiency utilization of this kind of resources. © 2020, Central South University Press. All right reserved.
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页码：2681 / 2688
页数：7
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