Effect of Coarse-grain and Low-grade Iron Ores on Sinter Properties

Xiao, Zhixin; Chen, Lingkun; Yang, Yindong; Li, Xiangcai; Barati, Mansoor

doi:10.2355/isijinternational.isijint-2016-688

Cited by 13 publications

(4 citation statements)

References 22 publications

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“…Umadevi et al, revealed that with increasing alumina content in the sinter of both the conventional and selective granulation processes, the fractions of hematite and of SFCA, and the pore phase increased, whereas the magnetite and silicate phases decreased [18]. In addition, Xiao et al, showed that the Al 2 O 3 content has little effect on the liquidity of the liquid phase [19].…”

Section: Introductionmentioning

confidence: 99%

The Mechanism of the Effect of Al2O3 Content on the Liquid Phase Fluidity of Iron Ore Fines

Hong

et al. 2019

Processes

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The sintering process is significantly important for the ironmaking in China because of the large amount of sinter consumed. Al2O3 is an important element determining the quality and quantity of sinter. However, different conclusions have been made regarding the effects of Al2O3 on the amount and fluidity of the liquid phase formed in the sinter phase. Therefore, it is necessary to examine the effects of Al2O3 content on the amount and fluidity of the liquid phase. The present work investigated the effects of different Al2O3 contents of iron ore fines on the liquid phase formation, mineral composition, and consolidation strength. The results showed that a small amount of Al2O3 increased the amount of calcium ferrite, making the liquid phase formation easier. As the Al2O3 content in iron ore fines increased, the liquidity index decreased continuously, while the fluidity and the consolidation strength of the sintered body were directly related to the content squared. The quality of the sinter is optimal when the Al2O3 content of the iron ore fines is about 2 wt % (the SiO2 content is 4 wt %).

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Section: Introductionmentioning

confidence: 99%

The Mechanism of the Effect of Al2O3 Content on the Liquid Phase Fluidity of Iron Ore Fines

Hong

et al. 2019

Processes

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“…Different phases verified in the sinter have been collected from literature to Table 3, in which the sinter phases have been classified into iron oxides, calcium ferrites, amorphous silicates, crystalline silicates and non-assimilated non-ferrous particles. The classification has been modified after Mezibricky et al 35) In addition to mineral phases, there are different-sized pores 8,12,27,28,[36][37][38] in the sinter structure, which also have a marked effect on the sinter properties. 14) As earlier stated, the chemical composition together with the process conditions determine the mineral compounds in the sinter.…”

Section: Mineralogical Compositionmentioning

confidence: 99%

Review on the Phase Equilibria in Iron Ore Sinters

2020

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“…A suitable liquid phase fluidity could ensure a solid-liquid contact area, which can result in sufficient bonding strength. Thus, the liquid phase fluidity of iron ore is very important for optimizing ore matching [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermodynamic Melt Formation Characteristics on Liquid Phase Fluidity of Iron Ore in the Sintering Process

Zhang

et al. 2019

Metals

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The liquid phase fluidity of iron ore is a vital index of fundamental sintering characteristics. In this paper, FactSage software and a visible microsintering test device were used to research the influence of the thermodynamic melt characteristics on the liquid phase fluidity under fixed CaO content conditions. The results show that the laws governing liquid phase fluidity of iron ore are significantly different with a fixed alkalinity and fixed CaO content of the sample. The liquid phase content at the sintering temperature is the most important thermodynamic melt formation characteristic affecting the liquid phase fluidity. In addition to the liquid phase content, other minerals also have a greater impact on liquid phase fluidity. Decreasing the viscosity of the liquid phase improves the liquid phase fluidity of the iron ore, and the effect of the SiO2 content of the iron ore on the mixed phase viscosity is greater than that of the Al2O3 content.

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Effect of Coarse-grain and Low-grade Iron Ores on Sinter Properties

Cited by 13 publications

References 22 publications

The Mechanism of the Effect of Al2O3 Content on the Liquid Phase Fluidity of Iron Ore Fines

The Mechanism of the Effect of Al2O3 Content on the Liquid Phase Fluidity of Iron Ore Fines

Review on the Phase Equilibria in Iron Ore Sinters

Effect of Thermodynamic Melt Formation Characteristics on Liquid Phase Fluidity of Iron Ore in the Sintering Process

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