Enrichment and reconfiguration of titanium-bearing phase in vortex smelting reduction process of vanadium-titanium magnetite

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外文摘要：To comprehensively utilize the low-iron high-vanadium-titanium magnetite,a new method of vortex smelting reduction of vanadium-titanium magnetite was proposed,and the enrichment and reconstitution regularity of Ti-bearing phases in the slag was investigated through X-ray fluorescence spectrometry,X-ray photoelectron spectroscopy,X-ray diffraction analysis,and optical microscopy.The phase diagram revealed that the preferential crystallization of MgTi2O5 can be achieved by adjusting the CaO,MgO,and TiO2 contents of slag.The predominant Ti-bearing phases in the slag obtained from the reduction process are MgxTi3_xO5(0 ≤ x ≤ 1)and CaTiO3.FeTiO3 is present at carbon-iron ratio(CR)=1.3,while MgTi2O4 and TiC are formed at CR=1.3.The enrichment of TiO2 in the slag increases first and then decreases as the CR increases,and at CR=1.1,the enrichment of TiO2 in the slag reaches 51.3 wt.％.Additionally,the concentrations of MgxTi3_xO5(0 ≤ x ≤ 1)and CaTiO3 in the slag,along with the grain width of MgxTi3_xO5(0 ≤ x ≤ 1),decrease with the increase in CR.

外文关键词：

Vanadium-titanium magnetiteVortex smelting reductionPhase reconfigurationTiO2 enrichment

作者：

Yong-chao Han、Zhi-he Dou、Rui Zhang、Ting-an Zhang、Shuai Fang

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作者单位：

Key Laboratory for Ecological Metallurgy of Multimetallic Ores(Ministry of Education),Shenyang 110819,Liaoning,China

School of Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China

基金：

National Natural Science Foundation of ChinaFundamental Research Funds for Central UniversitiesFundamental Research Funds for Central Universities

项目编号：

U1908225N2225012N232405-06

出版年：

2024

DOI：

10.1007/s42243-023-01156-4

钢铁研究学报(英文版)

钢铁研究总院

钢铁研究学报(英文版)

CSTPCD

影响因子：0.584

ISSN：1006-706X

年,卷(期)：2024.31(7)