Effect of diboron trioxide on the crushing strength and smelting mechanism of high-chromium vanadium-titanium magnetite pellets
查看参考文献22篇
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文摘
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The effect of diboron trioxide (B_2O_3) on the crushing strength and smelting mechanism of high-chromium vanadium-titanium magnetite pellets was investigated in this work. The main characterization methods were X-ray fluorescence, inductively coupled plasma-atomic emission spectroscopy, mercury injection porosimetry,X-ray diffraction,metallographic microscopy, and scanning electron microscopy-energy-dispersive X-ray spectroscopy. The results showed that the crushing strength increased greatly with increasing B_2O_3 content and that the increase in crushing strength was strongly correlated with a decrease in porosity, the formation of liquid phases, and the growth and recrystallization consolidation of hematite crystalline grains. The smelting properties were measured under simulated blast furnace conditions; the results showed that the smelting properties within a certain B_2O_3 content range were improved and optimized except in the softening stage. The valuable element B was easily transformed to the slag, and this phenomenon became increasingly evident with increasing B_2O_3 content. The formation of Ti(C,N) was mostly avoided,and the slag and melted iron were separated well during smelting with the addition of B_2O_3. The size increase of the melted iron was consistent with the gradual optimization of the dripping characteristics with increasing B_2O_3 content. |
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来源
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International Journal of Minerals
, Metallurgy and Materials,2017,24(11):1228-1240 【核心库】
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DOI
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10.1007/s12613-017-1515-1
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关键词
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high-chromium vanadium-titanium magnetite
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pellets
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diboron trioxide
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crushing strength
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smelting mechanism
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地址
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1.
School of Metallurgy, Northeastern University, Shenyang, 110819
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School of Metallurgy, Northeastern University, Liaoning Key Laboratory of Recycling Science for Metallurgical Resources, Shenyang, 110819
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1674-4799 |
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学科
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冶金工业 |
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基金
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supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China
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the National Program on Key Basic Research Project of China
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文献收藏号
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CSCD:6118370
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