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Minerals 2017, 7(7), 107; https://doi.org/10.3390/min7070107

Influence of Coke Ratio on the Sintering Behavior of High-Chromium Vanadium-Titanium Magnetite

1
School of Metallurgy, Northeastern University, Shenyang 110819, China
2
Key Laboratory of Liaoning Province for Recycling Science of Metallurgical Resources, Shenyang 110819, China
*
Author to whom correspondence should be addressed.
Received: 12 May 2017 / Revised: 14 June 2017 / Accepted: 16 June 2017 / Published: 22 June 2017
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Abstract

High-chromium vanadium and titanium magnetite (HCVTM) sinter has poor properties. The coke ratio has an important effect on the behavior of HCVTM sintering as it affects the mineral phases in the high-chromium vanadium and titanium sinter (HCVTS) via changing the sintering temperature and atmosphere. In this work, the sintering behavior of HCVTM mixed with varying coke ratios was investigated through sintering pot tests, X-ray diffraction (XRD), gas chromatographic analysis, and mineral phase analysis. The results show that, with the increase of the coke ratio from 4.0% to 6.0%, leading to the increase of the combustion ratio of the flue gas, the vertical sintering rate and sinter productivity decrease. Meanwhile, with the change of the coke ratio, the content of magnetite, silicate, and perovskite increase, while the hematite and calcium ferrite decrease. In addition, the tumble strength and reduction ability of HCVTS decrease, and its degradation strength increase. It was found that the appropriate coke ratio for the sintering process was 5.0 wt %. View Full-Text
Keywords: high-chromium vanadium and titanium magnetite; sinter; mineralogical phases; carbonthermal reaction high-chromium vanadium and titanium magnetite; sinter; mineralogical phases; carbonthermal reaction
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Yang, S.; Zhou, M.; Tang, W.; Jiang, T.; Xue, X.; Zhang, W. Influence of Coke Ratio on the Sintering Behavior of High-Chromium Vanadium-Titanium Magnetite. Minerals 2017, 7, 107.

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