Characterization and measurement of apparent viscosity of solid particles in fixed beds under high temperature

Zhang, Yanling; An, Zhuoqing; Bai, Hao; Li, Qi; Guo, Zhen

doi:10.1016/j.powtec.2015.06.069

Cited by 6 publications

(2 citation statements)

References 26 publications

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“…Based on the force balance, a quantitative model for the fluidization characteristics of iron ore fines was developed by Y. W. Zhong et al 80) to describe de-fluidization behavior at elevated temperatures. Y. L. Zhang et al [81][82][83] systematically studied the apparent viscosity of iron powders in a fluidized bed using a powder apparent viscosity measurement system (Fig. 8), and defined the specific calculation formula.…”

Section: Influencing Factors Of Stickingmentioning

confidence: 99%

A Review on Prevention of Sticking during Fluidized Bed Reduction of Fine Iron Ore

et al. 2020

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The fluidized bed ironmaking technology has attracted the attention of many researchers for decades as a direct reduction ironmaking method with many advantages. This process has been applied as a pretreatment method in many non-blast furnace ironmaking processes. However, the sticking problem hindered its development greatly. Defining the essential cause of sticking, and fundamentally solving this problem are the key steps encountered by this process. The research works related to the prevention of sticking problem during fluidized bed reduction of fine iron ore are comprehensively summarized in this article. The causes of sticking, the influencing factors of sticking and the solution of sticking are firstly discussed, followed by the analysis on the possible development direction of future fluidized bed ironmaking technology.

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Section: Influencing Factors Of Stickingmentioning

confidence: 99%

A Review on Prevention of Sticking during Fluidized Bed Reduction of Fine Iron Ore

et al. 2020

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“…First, a joint influence with the gas composition determines the metallic iron morphology [ 34 , 58 , 61 , 63 ]. Second, the higher the temperature, the higher the adhesive forces of metallic particles, especially for new highly active iron [ 27 , 53 , 54 , 70 , 71 , 72 , 73 ].…”

Section: Influence Of the Reduction Process On The Fluidization Behaviormentioning

confidence: 99%

Analysis of the Usability of Iron Ore Ultra-Fines for Hydrogen-Based Fluidized Bed Direct Reduction—A Review

Wolfinger¹,

Spreitzer

Schenk

2022

Materials

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This review focuses on the usability of iron ore ultra-fines for hydrogen-based direct reduction. Such technology is driven by the need to lower CO2 emissions and energy consumption for the iron and steel industry. In addition, low operational and capital expenditures and a high oxide yield because of the direct use of ultra-fines can be highlighted. The classification of powders for a fluidized bed are reviewed. Fluid dynamics, such as minimum fluidization velocity, entrainment velocity and fluidized state diagrams are summarized and discussed regarding the processing of iron ore ultra-fines in a fluidized bed. The influence of the reduction process, especially the agglomeration phenomenon sticking, is evaluated. Thus, the sticking determining factors and the solutions to avoid sticking are reviewed and discussed. The essential theoretical considerations and process-relevant issues are provided for the usability of iron ore ultra-fines for hydrogen-based fluidized bed direct reduction.

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Prediction of defluidization behavior using particle apparent viscosity

Wang

Zhang

2022

Korean J. Chem. Eng.

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Characterization and measurement of apparent viscosity of solid particles in fixed beds under high temperature

Cited by 6 publications

References 26 publications

A Review on Prevention of Sticking during Fluidized Bed Reduction of Fine Iron Ore

A Review on Prevention of Sticking during Fluidized Bed Reduction of Fine Iron Ore

Analysis of the Usability of Iron Ore Ultra-Fines for Hydrogen-Based Fluidized Bed Direct Reduction—A Review

Prediction of defluidization behavior using particle apparent viscosity

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