Numerical simulation of gas–solid flow behavior and heat transfer characteristics for suspension magnetization roasting: Effect of air inlet velocity
Advanced Powder Technology(2024)
Abstract
The main furnace is an essential part of a suspension magnetization system, and its performance directly determines the quality of roasting products. In this study, a Computational Fluid Dynamics-Discrete Phase Model (CFD-DPM) was established for a main furnace. The gas–solid flow behavior and heat transfer characteristics of the main furnace were studied with air inlet velocities of 1.5 m/s, 1.8 m/s, 2.1 m/s, and 2.4 m/s, respectively. The simulation results show that as the air inlet velocity increases, the gas-phase velocity gradually decreases, and the particle-phase velocity tends to stabilize after reaching the minimum value. With the increasing air inlet velocity from 1.5 m/s to 2.4 m/s, the particle residence time was significantly reduced from 1.67 s to 1.16 s. In addition, the increases in air inlet velocity led to the dilution of the particle phase concentration in the furnace, without improving in the particle backmixing phenomenon. Furthermore, both the gas-phase and particle-phase temperatures in the furnace decrease with the increase in air inlet velocity. These can provide guidance for the operation of the suspension magnetization roaster.
MoreTranslated text
Key words
Suspension magnetization roasting,Gas-solid phase,Computational fluid dynamic (CFD),Heat-transfer characteristic
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined