Improving Energy Efficiency in Iron Ore Sintering through Segregation: a Theoretical Investigation

Zhao, Jiapei; Loo, C. E.; Ellis, Brian

doi:10.2355/isijinternational.isijint-2015-686

Cited by 20 publications

(6 citation statements)

References 21 publications

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“…However, the simulation of the packing of iron ore granules has seldom been carried out despite its importance in the ironmaking industry. For instance, in sintering processes, the packing structure of the iron ore granules packed on a sinter strand directly affects the bed permeability and thus, the sintering productivity and sinter quality [29]. To investigate the packing of iron ore granules at an industrial scale, a comprehensive model that can predict the motion of the granules under different operating conditions is required.…”

Section: Introductionmentioning

confidence: 99%

The angle of repose and size segregation of iron ore granules: DEM analysis and experimental investigation

Honeyands

O’Dea

et al. 2017

Powder Technology

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We have developed a DEM model to study the packing characteristics of iron ore granules. Two important indices in characterising the packing of granules, i.e. the angle of repose (for packing stability) and a size segregation index, were obtained from the simulations. The comparisons of the simulated and experimental angle of repose and size segregation indices showed good agreement, demonstrating that the developed model is capable of predicting the behaviour of iron ore granules during pile formation. The simulation results show that the angle of repose of iron ore granules was greatly influenced by sliding and rolling friction coefficients. The simulation results showed that the decrease in granule size significantly increased the kinetic energy dissipation rate of the discharged granules during the packing process. Therefore, an increase in granule pile stability was observed. The simulation results also demonstrated the presence of significant size segregation of iron ore granules in the pile in the horizontal direction. The average granule size in the outer section of the pile was relatively larger than that in the central section. However, in the vertical direction, due to the interaction of multiple segregation mechanisms, size segregation was not clearly observed.

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Section: Introductionmentioning

confidence: 99%

The angle of repose and size segregation of iron ore granules: DEM analysis and experimental investigation

Honeyands

O’Dea

et al. 2017

Powder Technology

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“…above melting temperature, and the total heat available in the critical melt formation stage 9) was further determined. 31) Meanwhile, either one-dimensional 32,33) or two-dimensional model 10) was solved to predict the temperature profiles against the time, and a residence time of approximately 10 mins at 1 473-1 673 K was expected to be reasonable for liquid phase generation in the packed bed. 34) Although lots of work has successfully established the relations between the temperature profile and the sintering time, few works focus on proposing a visualization method to quantitatively evaluate carbon combustion energy in the packed bed.…”

Section: A Visualization Methods Of Quantifying Carbon Combustion Energy In the Sintering Packed Bedmentioning

confidence: 99%

A Visualization Method of Quantifying Carbon Combustion Energy in the Sintering Packed Bed

Sun

Yang

et al. 2021

ISIJ Int.

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“…Previous researchers have proven unevenness in temperature distribution in the sinter bed negatively influences the energy efficiency and overall performance of the sintering process, as well as the permeability of the bed [11][12][13]. Few studies exist on the minimization of the unevenness in temperature distribution at the combustion zonetheoretical methods to minimize the phenomenon have been investigated by Zhao et al [11] and Machida et al [14].…”

Section: Sintering Processmentioning

confidence: 99%

Review on alternative fuel application in iron ore sintering

Alex

Wang

Fang

et al. 2021

Ironmaking & Steelmaking

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Various kinds of fuel such as high rank coal and coke breeze have been adopted over the years. However, their low combustion efficiency levels have given rise to the production of alternative fuels such as charcoal, biomass, semi-coke breeze, solid waste and gas, but the most extensively applied in recent times is semi-coke due to its high combustion efficiency and low pollutant emission level as compared to the other alternative fuels. The aim of this work is to review alternative fuels reported in literature as effective and efficient in powering sinter plants. This review presents problems that may occur with the adoption of each kind of alternative fuel, and their relative combustion efficiencies as compared to the other. Also, the kind of alternative fuel utilized in powering sinter plants may contribute to escalation of climate change and its variability or result in their drastic reduction.

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Improving Energy Efficiency in Iron Ore Sintering through Segregation: a Theoretical Investigation

Cited by 20 publications

References 21 publications

The angle of repose and size segregation of iron ore granules: DEM analysis and experimental investigation

The angle of repose and size segregation of iron ore granules: DEM analysis and experimental investigation

A Visualization Method of Quantifying Carbon Combustion Energy in the Sintering Packed Bed

Review on alternative fuel application in iron ore sintering

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