Hot slag modification with mechanical stirring: heat transfer characteristics in a slag pot
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Chunming Zhang
und
Min Chen
Abstract
Hot slag modification during its discharging process is considered to be a key technology to improve the recycling rate of metallurgical slag, and hot slag is converted into new value-added materials. In order to prevent the solidification of hot slag surface during modification and facilitate the modifier addition, a slag pot with mechanical stirring was applied and the heat transfer characteristics of hot slag were studied by numerical simulation. By comparison, the heat transfer behavior in a non-agitated slag pot was also studied by considering the natural convection. In addition, to reduce the heat loss of hot slag, a pot cover was installed on the agitated slag pot and its heat transfer characteristics were studied. The results show that the turbulent kinetic energy of hot slag surface can be significantly increased by mechanical stirring. After 20 min, the surface temperature of hot slag in the agitated slag pot is higher than that of the non-agitated slag pot, about 1650 K. After installing a pot cover, the surface temperature of hot slag in the agitated slag pot can be increased by about 17 K after 5 min holding time, and the average surface heat flux on the top surface of slag pot can be reduced by almost 1.75 × 105 W/m2.
Funding source: Central University Basic Research Fund of China
Award Identifier / Grant number: N2125018
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 51974080
Award Identifier / Grant number: 52074077
Award Identifier / Grant number: 52174301
Funding source: Fundamental Research Funds for the Central Universities
Award Identifier / Grant number: Unassigned
Acknowledgements
The authors gratefully acknowledge the National Natural Science Foundation of China. [Grant numbers: 52074077, 51974080 and 52174301], the Fundamental Research Funds for the Central Universities was supported by Chinese Education Ministry [Grant number N2125018].
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This study was funded by Central University Basic Research Fund of China (Grant no: N2125018), National Natural Science Foundation of China (Grant nos: 51974080, 52074077, and 52174301), and Fundamental Research Funds for the Central Universities.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Artikel in diesem Heft
- Frontmatter
- Articles
- Unified fractional indirect IMC-based hybrid dual-loop strategy for unstable and integrating type CSTRs
- Oxidative desulfurization of model and real fuel samples with natural zeolite-based catalysts: experimental design and optimization by Box–Behnken method
- Non-contact heating efficiency of flowing liquid effected by different susceptors in high-frequency induction heating system
- Gas–liquid mixing in the stirred tank equipped with semi-circular tube baffles
- Customizing continuous chemistry and catalytic conversion for carbon–carbon cross-coupling with 3dP
- Influence factor of Pr(III) recovery kinetics from rare-earth simulant wastewater by PAN microtubule hyperfiltration reactor
- NanoParticle Flow Reactor (NanoPFR): a tested model for simulating carbon nanoparticle formation in flow reactors
- Hot slag modification with mechanical stirring: heat transfer characteristics in a slag pot
- Assessment of effectiveness factor in porous catalysts under non-symmetric external conditions of concentration
- CFD simulation of gas–solid fluidized bed hydrodynamics; prediction accuracy study
Artikel in diesem Heft
- Frontmatter
- Articles
- Unified fractional indirect IMC-based hybrid dual-loop strategy for unstable and integrating type CSTRs
- Oxidative desulfurization of model and real fuel samples with natural zeolite-based catalysts: experimental design and optimization by Box–Behnken method
- Non-contact heating efficiency of flowing liquid effected by different susceptors in high-frequency induction heating system
- Gas–liquid mixing in the stirred tank equipped with semi-circular tube baffles
- Customizing continuous chemistry and catalytic conversion for carbon–carbon cross-coupling with 3dP
- Influence factor of Pr(III) recovery kinetics from rare-earth simulant wastewater by PAN microtubule hyperfiltration reactor
- NanoParticle Flow Reactor (NanoPFR): a tested model for simulating carbon nanoparticle formation in flow reactors
- Hot slag modification with mechanical stirring: heat transfer characteristics in a slag pot
- Assessment of effectiveness factor in porous catalysts under non-symmetric external conditions of concentration
- CFD simulation of gas–solid fluidized bed hydrodynamics; prediction accuracy study
