Numerical Simulation Research on Heat Transfer of Dezincification Hot Scrap Steel Briquette
-
摘要: 针对脱锌废钢含大量热量,采用FLUENT软件对热态废钢压块的初始打包温度和堆垛时间进行三维传热数值模拟,研究初始温度和冷却时间对热态废钢压块中余热的影响。结果表明:压块初始温度越高,其散热相对越快,冷却24 h、初始温度1 000,900,800,700,600℃时,压块对应的温度降幅分别为61,60,47,41,35℃;24 h内多层保温堆垛方式可有效存储废钢压块的热量,保温效果好,冷却3,6,12,24 h时压块剩余的热量分别为623.27,618.85,611.16,598.73 MJ/t,24 h后还剩95%的热量。Abstract: In view of the large amount of heat in the zinc-containing scrap after dezincification, three-dimensional heat transfer numerical simulation of the initial packing temperature and stacking time of the hot scrap briquette was carried out with FLUENT software, and the effect of the initial temperature and cooling time on the residual heat in the hot scrap was studied. The results show that the higher the initial temperature of the briquette, the faster the heat dissipation is. When the initial temperature is 1 000, 900, 800, 700, 600℃ for 24 h of cooling, the corresponding temperature of the briquette decreases by 61, 60, 47, 41, 35℃, respectively; The multi-layer insulation stacking method within 24 h can effectively store the heat of the scrap steel briquette, and the heat insulation effect is good. The remaining heat of the briquette at cooling 3, 6, 12, 24 h is 623.27, 618.85, 611.16, 598.73 MJ/t, respectively, and 95% of the heat remains after 24 h.
-
Keywords:
- scrap steel /
- dezincification /
- briquetting /
- waste heat
-
-
[1] 李树斌.我国废钢铁资源利用情况和“十三五”废钢铁行业发展趋势的简要分析[J].资源再生,2018(12):12-14. [2] 上官方钦,郦秀萍,周继程,等.中国废钢资源发展战略研究[J].钢铁,2020, 55(6):8-14. [3] 张寒霜.从废镀锌板炼钢粉尘中回收锌的工艺研究[D].北京:北京有色金属研究总院,2011:47-54. [4] 刘淑芬.高炉瓦斯泥中锌综合回收新工艺研究[D].长沙:中南大学,2012:26-30. [5] 杨冬伟,郭键柄,张琪,等.钢铁厂含锌粉尘的危害与处理技术[J].甘肃冶金,2017, 39(4):82-85. [6] MANGER K, MEURER U, WIRLING J. Minimizing dioxin and furan emissions during zinc dust recycle by the waelz process[J]. JOM, 2003, 55(8):20-25.
[7] 景娟.火法处理电炉烟尘脱氟氯锌的研究[D].西安:西安建筑科技大学,2018:29-32. [8] DE MICCO G, FOUGA G G, BOHÉ A E. Chlorination of zinc oxide between 723 and 973 K[J]. Metallurgical and Materials Transactions B, 2007, 38(6):853-862.
[9] 李圣辉.含锌铅电炉粉尘微波直接还原工艺及机理研究[D].武汉:武汉科技大学,2012:43-54. [10] 高仑.锌回收与再生技术[M].北京:化学工业出版社,2013:97-103. [11] 邓南阳,王建军,吴坚,等.顶底复吹转炉冶炼45#硬线钢终点硫的控制[J].安徽工业大学学报(自然科学版),2018, 35(2):99-104. [12] 谢泽强,郭宇峰,陈凤,等.钢铁厂含锌粉尘综合利用现状及展望[J].烧结球团,2016, 41(5):53-56.
计量
- 文章访问数: 74
- HTML全文浏览量: 3
- PDF下载量: 2