液态钢渣干式转盘粒化过程仿真与分析-simulation and analysis of granulation process of liquid steel slag dry turntable.docxVIP

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液态钢渣干式转盘粒化过程仿真与分析-simulation and analysis of granulation process of liquid steel slag dry turntable.docx

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液态钢渣干式转盘粒化过程仿真与分析-simulation and analysis of granulation process of liquid steel slag dry turntable

AbstractThe steel output of China has ranked the first in the world since 1996.As the steel output is increasing, the steel slag as the byproduct of the steel production process is increasing accordingly. But the large accumulative steel slag not only pollutes the environment, but also occupies a mass of land. So exploring some methods to handle and apply the steel slag effectively has become one of the vital tasks in the steel industry.Based on the research status of molten steel slag dry processing, the theoretical analysis on the principle and properties of dry granulation process of molten steel slag by rotary disk has been completed in the paper. Then the Gambit commercial software is used to establish the simulation model of dry granulation process of molten steel slag by rotary disk and the ANSYS FLUENT software is used to proceed with the dynamic simulation analysis of the granulation process. In the simulation process, the molten steel slag is injected into the rotary disk and the molten steel slag flies away from the edge of rotary disk with the effect of the centrifugal force. Then the molten steel slag will be rapidly cooled down to particles in the cool air outside the rotary disk. By changing the key parameters such as the uplift angle of the rotary disk, the rotating speed of the rotary disk, the speed of the cooling air and the flow of the molten steel slag, the study on the important parameters to influence the temperature and the diameter of steel slag droplets in the granulation process has been done. Based on the analysis results of simulation model of dry granulation process of molten steel slag by rotary disk, the time and the diameter of cooling down the recycled high-temperature steel slag particles have been calculated. The deviation of film thickness by simulation and by experiment is less than 10%, which proves the applicability of simulation model. The result will be helpful to research the structural design and process parameters of dry