工程科学学报，第38卷，第10期：1417-1422,2016年10月 Chinese Journal of Engineering,Vol.38,No.10:1417-1422,October 2016 D0l:10.13374/j.issn2095-9389.2016.10.010:http://journals..ustb.edu.cn 工业生产条件下连续热镀锌锅中锌渣扩散的数值 模拟 冒飞飞”，董安平)，疏达”，王俊12》，孙宝德2) 1)上海市先进高温材料及精密成形重点实验室（上海交通大学），上海200240 2)上海交通大学金属基复合材料国家重点实验室，上海200240 ☒通信作者，E-mail:apdong(@sjtu.cdu.cn 摘要基于欧拉一拉格朗日方法的离散相模型，针对锌液体外循环系统下连续热镀锌锅中三种不同类型的锌渣，利用数值 模拟的方法计算锌锅中锌渣的浓度差分布.分析锌渣扩散得到了锌渣在带钢表面及锌锅中的运动轨迹和分布规律.结果表 明：锌渣在带钢上的沉积率随着锌渣粒度的减小而升高：由于锌渣密度的差异，当锌渣直径小于80m时，沉积率从高到低依 次为悬浮渣、面渣和底渣.面渣在带钢出口后侧区域的平均停留时间最长，在该位置设置抽锌管将有利于面渣的去除：在V 形区内侧区域带钢上的悬浮渣质量浓度最高，对带钢影响最大：底渣主要运动区域为锌锅底部，基本不会黏附于带钢表面，对 带钢质量影响最小， 关键词热浸镀锌；锌渣：扩散：除渣；数值模拟 分类号TG155.5 Numerical simulation of zinc dross diffusion in a continuous hot dip galvanized zinc pot under the industrial production condition MAO Feifei,DONG An-ping,SHU Da,WANG Jun),SUN Bao-de2) 1)Shanghai Key Lab of Advanced High-Temperature Materials and Precision Forming,Shanghai Jiao Tong University,Shanghai 200240,China 2)The State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University,Shanghai 200240,China Corresponding author,E-mail:apdong@sjtu.edu.en ABSTRACT Based on the discrete phase model of the Euler-Lagrange equation,the concentration fields of three different types of zinc dross under a circulating purification system were calculated by using the numerical simulation method.The result shows that the deposition rate increases with the decrease of zinc dross size.When the zinc dross size is smaller than 80 um,the order of deposition rate from high to low is suspending dross,top dross,and bottom dross.The average residence time of the top dross in the back area of the strip exit is the longest,and it will be beneficial to the removal of the top dross to install a pumping tube in this area.On the inner part of the V-shaped zone,the mass concentration of the suspending dross is the highest,and it has the biggest influence on the sur- face quality of steel strips.The main travel area of the bottom dross is close to the bottom of the zinc pot,and the bottom dross cannot adhere to the strip surface and it has minimal impact on the surface quality of steel strips. KEY WORDS hot dip galvanizing:zinc dross:diffusion:dross removal:numerical simulation 近年来，汽车用高品质热镀锌钢板成为我国钢铁 企业已经把汽车板尤其是高强度钢板及其热镀锌产品 企业开发的主要方向.例如，宝钢、武钢、鞍钢等钢铁 作为重点研发产品·.汽车板热镀锌过程中产生的 收稿日期：2015-1-12 基金项目：国家自然科学青年基金资助项目(51204110)工程科学学报，第 38 卷，第 10 期: 1417--1422，2016 年 10 月 Chinese Journal of Engineering，Vol． 38，No． 10: 1417--1422，October 2016 DOI: 10． 13374 /j． issn2095--9389． 2016． 10． 010; http: / /journals． ustb． edu． cn 工业生产条件下连续热镀锌 锅中锌渣扩散的数值 模拟 冒飞飞1) ，董安平1) ，疏 达1) ，王 俊1，2) ，孙宝德1，2) 1) 上海市先进高温材料及精密成形重点实验室( 上海交通大学) ，上海 200240 2) 上海交通大学金属基复合材料国家重点实验室，上海 200240  通信作者，E-mail: apdong@ sjtu． edu． cn 摘 要 基于欧拉--拉格朗日方法的离散相模型，针对锌液体外循环系统下连续热镀锌锅中三种不同类型的锌渣，利用数值 模拟的方法计算锌锅中锌渣的浓度差分布． 分析锌渣扩散得到了锌渣在带钢表面及锌锅中的运动轨迹和分布规律． 结果表 明: 锌渣在带钢上的沉积率随着锌渣粒度的减小而升高; 由于锌渣密度的差异，当锌渣直径小于 80 μm 时，沉积率从高到低依 次为悬浮渣、面渣和底渣． 面渣在带钢出口后侧区域的平均停留时间最长，在该位置设置抽锌管将有利于面渣的去除; 在 V 形区内侧区域带钢上的悬浮渣质量浓度最高，对带钢影响最大; 底渣主要运动区域为锌锅底部，基本不会黏附于带钢表面，对 带钢质量影响最小． 关键词 热浸镀锌; 锌渣; 扩散; 除渣; 数值模拟 分类号 TG155. 5 Numerical simulation of zinc dross diffusion in a continuous hot dip galvanized zinc pot under the industrial production condition MAO Fei-fei1) ，DONG An-ping1)  ，SHU Da1) ，WANG Jun1，2) ，SUN Bao-de1，2) 1) Shanghai Key Lab of Advanced High-Temperature Materials and Precision Forming，Shanghai Jiao Tong University，Shanghai 200240，China 2) The State Key Laboratory of Metal Matrix Composites，Shanghai Jiao Tong University，Shanghai 200240，China  Corresponding author，E-mail: apdong@ sjtu． edu． cn ABSTＲACT Based on the discrete phase model of the Euler--Lagrange equation，the concentration fields of three different types of zinc dross under a circulating purification system were calculated by using the numerical simulation method． The result shows that the deposition rate increases with the decrease of zinc dross size． When the zinc dross size is smaller than 80 μm，the order of deposition rate from high to low is suspending dross，top dross，and bottom dross． The average residence time of the top dross in the back area of the strip exit is the longest，and it will be beneficial to the removal of the top dross to install a pumping tube in this area． On the inner part of the V-shaped zone，the mass concentration of the suspending dross is the highest，and it has the biggest influence on the sur￾face quality of steel strips． The main travel area of the bottom dross is close to the bottom of the zinc pot，and the bottom dross cannot adhere to the strip surface and it has minimal impact on the surface quality of steel strips． KEY WOＲDS hot dip galvanizing; zinc dross; diffusion; dross removal; numerical simulation 收稿日期: 2015--11--12 基金项目: 国家自然科学青年基金资助项目( 51204110) 近年来，汽车用高品质热镀锌钢板成为我国钢铁 企业开发的主要方向． 例如，宝钢、武钢、鞍钢等钢铁 企业已经把汽车板尤其是高强度钢板及其热镀锌产品 作为重点研发产品［1--2］． 汽车板热镀锌过程中产生的