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

Yang, Shuren; Zhou, Mi; Tang, Weidong; Jiang, Tao; Xue, Xiangxin; Zhang, Weijun

doi:10.3390/min7070107

Cited by 12 publications

(14 citation statements)

References 19 publications

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“…Subsequently, the distribution of the mineral phases became disordered. Our previous research [4,5,[23][24][25] found that, when the MgO content was 2.66%, a large number of secondary skeleton hematites were produced. The distribution of the mineral structures were non-uniform and the partial phases were in a slightly over-molten state, as shown in Figure 7a.…”

Section: Operation Parameters Of Sintering Processmentioning

confidence: 99%

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Effects of Dolomite on Mineral Compositions and Metallurgical Properties of Chromium-Bearing Vanadium–Titanium Magnetite Sinter

et al. 2017

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Abstract:Chengde chromium-bearing vanadium-titanium magnetite (CCVTM) has been used as an important mineral resource in sinter making. The MgO content of this sinter can be enhanced by adding dolomite, which improved operation of the blast furnace. The effects of MgO in the form of dolomite on metallurgical properties, microstructure and mineral compositions of CCVTM sinter were studied by a sinter pot test, X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), and mineral phase microanalysis. The results were as follows: The flame front speed and sinter coefficient decreased with an increase in MgO content from 2.66 to 3.86% by adding dolomite. With an increase in MgO content from 2.66 to 3.86%, the flame front speed, sintering utilization factor, and the value of RI decreased, while RDI and the softening-melting properties improved. In addition, the value of sinter strength (TI) reached a maximum value at MgO = 3.56%. In addition, an increase in the abundance of magnetite, magnesium ferrite, and silicate phase, as well as a decrease in hematite, was found with an increase in MgO content. We concluded that the most appropriate MgO content in the sinter is 3.56%.

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Section: Operation Parameters Of Sintering Processmentioning

confidence: 99%

“…Chromium and vanadium resources have been extracted from CCVTM [1][2][3][4][5][6][7]. The viscosity and the TiO 2 content of the slag are high in the blast furnace (BF) iron-making process, due to the high TiO 2 content in the CCVTM.…”

Section: Introductionmentioning

confidence: 99%

Effects of Dolomite on Mineral Compositions and Metallurgical Properties of Chromium-Bearing Vanadium–Titanium Magnetite Sinter

et al. 2017

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“…Recently, with the continuous advancement of mining technology and soaring mineral resource prices, the value of the large amount of low-grade vanadiferous titanomagnetite ore (LVTM) identified within the mine production areas has been highlighted by steel companies. The LVTM resources in the Chengde area have been estimated to exceed 10 billion tons [6][7][8][9]. Multiple studies have been done on conventional VTM, while fewer studies on LVTM with complex phase compositions and different properties are available [5,6].…”

Section: Introductionmentioning

confidence: 99%

Effect of TiO2 on the Sintering Behavior of Low-Grade Vanadiferous Titanomagnetite Ore

2021

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Low-grade vanadiferous titanomagnetite ore (LVTM) is as an important mineral resource for sintering ore manufacturing. Furthermore, TiO2 has a significant effect on the sintering process of iron ore fines. The effects of TiO2 on the metallurgical properties, microstructure, and mineral composition of LVTM sinter were investigated by sintering pot tests, X-ray diffraction (XRD), scanning electron microscopy (SEM), and mineral phase microanalysis. The results were as follows: as the TiO2 content increased from 1.75% to 4.55%, the flame front speed and productivity decreased, while the reduction degradation index (RDI) and softening properties deteriorated. In addition, the tumbler index (TI) values reached a maximum at TiO2 = 1.75%. In addition, with increasing TiO2 content, an increase in the magnetite and perovskite phase, and a decrease in calcium ferrite and hematite were found with an increase in TiO2 content. Thus, the lower the TiO2 content, the better the quality of the sinter.

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“…In order to use CVTM efficiently, the sintering behaviors of CVTM have been proposed by the authors' laboratory [7][8][9]. In the BF process, the CVTM sinter with different basicity, coke ratios, and MgO contents have been studied.…”

Section: Introductionmentioning

confidence: 99%

“…In the BF process, the CVTM sinter with different basicity, coke ratios, and MgO contents have been studied. Yang [7,8] studied the effects of coke ratios and MgO on the sintering behaviors and the metallurgical properties of CVTM. Yang [9] surveyed the effect of basicity on the mineral compositions and elements migration of CVTM sinters.…”

Section: Introductionmentioning

confidence: 99%

Effect of TiO2 on the Sintering Behavior of Chromium-Bearing Vanadium–Titanium Magnetite

et al. 2018

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Abstract:The sintering pot test was used to investigate the effect of TiO 2 on the sintering behavior of chromium-bearing vanadium-titanium magnetite (CVTM) sinter. The main characterization methods of X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy-energy disperse spectroscopy (SEM-EDS), and metallographic microscopy were employed. In this study, yield, tumbler index (TI), vertical sintering speed, productivity, reduction degradation index (RDI), and reduction index (RI) were tested and calculated. The yield first increases from 82.87% to 84.37% and then decreases to 83.65%, vertical sintering speed first increases from 17.00 mm·min −1 to 23.45 mm·min −1 and then decreases to 20.61 mm·min −1 , and productivity first increases from 2.33 t·m −2 ·h −1 to 3.14 t·m −2 ·h −1 and then decreases to 2.69 t·m −2 ·h −1 with increasing TiO 2 content. The TI increases from 45.81% to 52.09%, and RDI increases from 74.99% to 96.74%, while RI decreases from 67.92% to 47.15% with increasing TiO 2 content.

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

Cited by 12 publications

References 19 publications

Effects of Dolomite on Mineral Compositions and Metallurgical Properties of Chromium-Bearing Vanadium–Titanium Magnetite Sinter

Effects of Dolomite on Mineral Compositions and Metallurgical Properties of Chromium-Bearing Vanadium–Titanium Magnetite Sinter

Effect of TiO2 on the Sintering Behavior of Low-Grade Vanadiferous Titanomagnetite Ore

Effect of TiO2 on the Sintering Behavior of Chromium-Bearing Vanadium–Titanium Magnetite

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