Investigation on the evolution characteristics of bed porous structure during iron ore sintering

Wang, Jiankang; Ma, Pengnan; Meng, Hanxiao; Cheng, Fangzheng; Zhou, Hao

doi:10.1016/j.partic.2022.05.005

Cited by 4 publications

(3 citation statements)

References 38 publications

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“…The return fines ratio is determined based on the principle of return fines balance, and the return fines ratio is 20% in this experiment. The detailed chemical composition of the raw materials utilized in this study can be found in our previous studies. , …”

Section: Experiments and Methodsmentioning

confidence: 99%

Effect of Ammonia Injection on the Iron Ore Sintering Process: Reducing Fossil Fuel Consumption and Carbon Emissions

Wang,

Meng,

Liu

et al. 2023

Energy Fuels

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The experiment involving ammonia injection was conducted to minimize solid fuel consumption and carbon emissions during the sintering process of iron ore. The sintering bed temperature, sintered ore quality, combustion efficiency, and pollutant emission under different ammonia injection concentrations and coke ratios were investigated. The experimental findings indicate that the injection of ammonia has a positive impact on the thermal mode of the sintering bed, leading to an increased yield of sintered ore and an improved tumbler index. Additionally, ammonia injection enhances the fuel combustion efficiency and reduces CO emissions. Compared with the traditional case that without ammonia injection, the yield under 1.5% vol ammonia injection increased from 63.69 to 74.78%, the tumbler index increased from 54.9 to 60.7%, and the average combustion efficiency increased from 89.42 to 93.42%. Under 1.0% vol ammonia injection, it is possible to decrease the coke ratio from 4.5 to 3.5% without weakening the sintered ore quality and the solid fuel consumption ratio and carbon emissions can be reduced by 22.2%.

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Section: Experiments and Methodsmentioning

confidence: 99%

Effect of Ammonia Injection on the Iron Ore Sintering Process: Reducing Fossil Fuel Consumption and Carbon Emissions

Wang,

Meng,

Liu

et al. 2023

Energy Fuels

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“…The following is the general form of momentum equations for incompressible flow in a porous medium [15][16][17]:…”

Section: Fundamental Physical Equationsmentioning

confidence: 99%

Numerical Simulation of Heat and Mass Transfer Behavior during Iron Ore Sintering: A Review

Liu

Wang

et al. 2023

Metals

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Accurate computational models of sintering behavior would assist to enhance sinter quality and are anticipated to play a role in yield prediction. Sintering is a vital process in the manufacturing of iron and steel. As a consequence, the primary objective of these models will be a thorough simulation of mass and heat transport during the sintering process. In this paper, based on the examination and integration of previous studies, the fundamental physical formula and chemical reactions of the numerical simulation of the sintering process are introduced in depth with mechanism analysis. Furthermore, in view of the current numerical simulation methods and sintering process technology innovation development, the studies on sintering numerical simulation are reviewed from different angles, of which the main methods and assumptions are discussed. Finally, the current state of sintering simulation including the numerical simulation of innovative algorithm and optimized sintering technology is discussed in detail, along with potential implications for model development.

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“…Therefore, depending on the mineral-processing consequences over the particle size distribution, agglomeration unitary processes could be required to input specific fluid dynamics conditions, such as terminal velocity, to allow the raw material application in the BF ironmaking route. Under this perspective, sintering is an agglomeration process, based on thermal activated systems, used to transform the independent fine particles into a solid, aggregated material with adequate size and porosity, as well as with the mechanical properties required for efficient BF operation [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Batch Sintering of FeO·OH and Fe2O3 Blends: Chemical and Metallurgical Characterization

Pereira,

Coelho,

Santos

et al. 2024

Metals

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A sample of goethite iron ore sinter feed (G_SF) was employed as a raw material in a sintering bed. This sample partially replaced hematite sinter feed (H_SF), which is currently used as raw material in a sintering plant in the state of Minas Gerais, Brazil. This substitution did not adversely affect the chemical and metallurgical proprieties of the sinter mix product, provided that the utilization of G_SF was kept below 30% in weight. Despite the higher proportion of fines in G_SF, the presence of argillaceous minerals in the sample led to an improvement in the granulation index (GI) of the sinter mix product. The GI value increased from 68.4 to 82.7% for the experiments conducted without the presence of goethite ore and with 40% of goethite ore in the sintering mix, respectively. Consequently, the qualities of both the process and the produced sinter product were not compromised. The raw materials and the various sinters produced were characterized through X-ray fluorescence (XRF) and X-ray diffraction (XRD), as well as thermal gravimetric analysis (TGA). The XRD results were used to perform a quantitative assessment of the mineral phase using the Rietveld method (RM). This technique allowed for the determination of goethite content in the studied sample, which was 35.5%. Finally, the incorporation of G_SF in the sintering bed led to a 20% reduction in the cost of raw materials.

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Investigation on the evolution characteristics of bed porous structure during iron ore sintering

Cited by 4 publications

References 38 publications

Effect of Ammonia Injection on the Iron Ore Sintering Process: Reducing Fossil Fuel Consumption and Carbon Emissions

Effect of Ammonia Injection on the Iron Ore Sintering Process: Reducing Fossil Fuel Consumption and Carbon Emissions

Numerical Simulation of Heat and Mass Transfer Behavior during Iron Ore Sintering: A Review

Batch Sintering of FeO·OH and Fe2O3 Blends: Chemical and Metallurgical Characterization

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