Characteristic and kinetic study of the hot air-drying process of artificial limonite pellets

Fang, Haoyu; Zhou, Xiaolei; Gao, Lei; Yan, Haoli; Wang, Yunpeng; Ji, Haohang

doi:10.1016/j.jtice.2023.104925

Cited by 7 publications

(2 citation statements)

References 41 publications

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“…In comparison to sintered ore, pelletized ore has higher iron content, fewer harmful elements, and good reducibility, which results in increased production, reduced coke consumption, cost savings, optimized burden structure, and improved economic benefits in blast furnace smelting. Therefore, it is necessary to continuously increase the proportion of pelletized ore in the ironmaking process [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Compressive Strength of Biomass–Humic Acid Limonite Pellets Using Artificial Neural Network Model

et al. 2023

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Due to the detrimental impact of steel industry emissions on the environment, countries worldwide prioritize green development. Replacing sintered iron ore with pellets holds promise for emission reduction and environmental protection. As high-grade iron ore resources decline, research on limonite pellet technology becomes crucial. However, pellets undergo rigorous mechanical actions during production and use. This study prepared a series of limonite pellet samples with varying ratios and measured their compressive strength. The influence of humic acid on the compressive strength of green and indurated pellets was explored. The results indicate that humic acid enhances the strength of green pellets but reduces that of indurated limonite pellets, which exhibit lower compressive strength compared to bentonite-based pellets. Furthermore, artificial neural networks (ANN) predicted the compressive strength of humic acid and bentonite-based pellets, establishing the relationship between input variables (binder content, pellet diameter, and weight) and output response (compressive strength). Integrating pellet technology and machine learning drives limonite pellet advancement, contributing to emission reduction and environmental preservation.

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Section: Introductionmentioning

confidence: 99%

Prediction of Compressive Strength of Biomass–Humic Acid Limonite Pellets Using Artificial Neural Network Model

et al. 2023

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“…The utilization of biomass as a green reductant in reduction roasting is an appealing approach. Kinetic data plays a pivotal role in the advancement and optimization of chemical reactions for industrial applications [21,22]. However, current kinetic studies in this area lack remarkable depth.…”

Section: Introductionmentioning

confidence: 99%

Waste Corn Straw as a Green Reductant for Hematite Reduction Roasting: Phase Transformation, Microstructure Evolution and Process Mechanism

Zhang,

Sun,

Jin

et al. 2023

Minerals

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Mineral phase transformation (MPT) of hematite to magnetite by reduction roasting is a viable means of developing refractory iron ore resources. However, conventional coal-based reductants are prone to high carbon emissions and environmental pollution. Biomass, as a renewable green reductant, can make the MPT process more environmentally friendly while reducing the environmental impact associated with processing agricultural waste. This study systematically explored the feasibility of waste corn straw as a green reductant for hematite. Under the conditions of 8 min, 700 °C, a mass ratio of corn straw to hematite of 1:4, and a N2 flow rate of 300 mL/min, the best beneficiation indexes were achieved, with an iron grade of 69.82% and an iron recovery of 93.95%. During the MPT process, hematite was reduced under the action of corn straw, and the new magnetite particles were loose and porous, showing an acicular crystal structure. Meanwhile, the corn straw was converted into porous biochar.

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Enhanced compressive strength of preheated limonite pellets with biomass-derived binders

Fang

Gao

Zhou

et al. 2023

Advanced Powder Technology

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Characteristic and kinetic study of the hot air-drying process of artificial limonite pellets

Cited by 7 publications

References 41 publications

Prediction of Compressive Strength of Biomass–Humic Acid Limonite Pellets Using Artificial Neural Network Model

Prediction of Compressive Strength of Biomass–Humic Acid Limonite Pellets Using Artificial Neural Network Model

Waste Corn Straw as a Green Reductant for Hematite Reduction Roasting: Phase Transformation, Microstructure Evolution and Process Mechanism

Enhanced compressive strength of preheated limonite pellets with biomass-derived binders

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