| ZHANG Chuang,ZHOU Li,XIE Yi-kui,CHEN Qing.Physical Simulation of Zinc-slag in Circular Pot Flow Field[J],47(12):296-306 |
| Physical Simulation of Zinc-slag in Circular Pot Flow Field |
| Received:June 03, 2018 Revised:December 20, 2018 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2018.12.040 |
| KeyWord:round aluminum zinc pot zinc slag hydraulic model mathematical model |
| Author | Institution |
| ZHANG Chuang |
School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan , China |
| ZHOU Li |
School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan , China |
| XIE Yi-kui |
School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan , China |
| CHEN Qing |
School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan , China |
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| Abstract: |
| During the actual production of aluminum zinc plate, the zinc slag generated from the reaction between the steel strip and the aluminum zinc liquid will be adhered to the surface of the steel strip and seriously affect the surface quality of the steel strip. The work aims to study the method to move the dross away from the surface of the strip and improve the quality of the strip by hydraulic models and mathematical models. A transparent water model of a zinc pot was designed to visually study the movement state of the zinc slag inside the experimental model and analyze the movement state of the surface dregs, suspended slag and bottom slag under different process conditions. A mathematical model was established to calculate the temperature distribution and flow field distribution to verify the rationality of the hydraulic model. With the increase of the strip speed, the vortex core moved to both sides gradually. The larger strip speed could effectively promote the zinc slag away from the surface of the strip and the bottom slag that was rolled up increased. As the amount of suspended slag increased, the bottom slag of steel strip entering the center area at side bottom also started to roll up to form a hammer shape. The mathematical simulation and the physical model experiment were basically consistent. For surface slag, a larger strip speed can effectively promote the dross away from the strip surface. For the suspended slag, the increase of the strip speed is conducive to the floating of the suspended slag on the cross section. For the bottom dross, with the increase of the strip speed, the movement of the molten steel in the zinc pot is driven, so that the zinc liquid in the zinc pot flows more actively. After the pulling speed increases to a certain extent, the bottom slags roll up too much and enter into the zinc liquid, which is not favorable for the removal of zinc dross on the surface of the steel belt. |
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