ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2017, Vol. 38 ›› Issue (3): 18-22.

• 试验研究 • 上一篇    下一篇

带有真空壳和盖的钢包墙体传热研究

谢剑波1,2,周建安1,2,王宝1,2,雷洪3   

  1. 1省部共建耐火材料与冶金国家重点实验室,武汉科技大学,武汉430081:
    2省部共建钢铁冶金与资源化教育部重点实验室,武汉科技大学,武汉430081 ;
    3材料电磁过程研究教育部重点实验室,东北大学,沈阳110004
  • 收稿日期:2016-12-05 出版日期:2017-06-01 发布日期:2022-07-19
  • 作者简介:谢剑波(1989-),男,硕士生(2016年武汉科技大学),2014年攀枝花学院(本科)毕业,冶金资源节能环保控制。

A Study on Thermal Transmission of Walls of Ladle with Vacuum Shell and Lid

Xie Jianbo 1,2, Zhou Jianan1,2, Wang Bao1,2,Lei Hong3   

  1. 1 State Key Laboratory of Refractories and Metallury, Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081 ;
    2 Key Laboratory of Ferrous Metallgy and Resources Utilization, Minstry of Education,Wuhan University of Science and Technology, Wuhan 430081 ;
    3 Key Laboratory of Electro-Magnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004
  • Received:2016-12-05 Published:2017-06-01 Online:2022-07-19

摘要: 采用涂有防辐射材料的钢板焊接在传统钢包和钢包盖外壳上,构造出新型带真空壳钢包体减少热损失,并运用真空绝热理论,研究压力(50~105Pa)对500kg,1873K的钢液温降以及真空壳内综合传热机理的影响。结果表明,30min后,钢包壳和钢包盖真空室的真空绝对压力分别为50Pa和105Pa时,钢液温降分别为8K和37K;转化对流附加因素值在105Pa时是在50Pa的200倍;传统钢包绝热层的导热系数是真空壳绝对压力为50Pa时的11倍;工作层耐火材料导热系数是真空压力为50Pa的116倍。因此,新型钢包在低压力下保温作用明显。

关键词: 钢包, 热损失, 真空壳, 压力, 热流, 绝热

Abstract: By using steel plates with radiation-proof material coating welding on conventional ladle exterior shell and lid, a new ladle with vacuum shell is got to reduce heat loss, and the effect of pressure in vacuum chamber (50~105Pa) on temperature reduction of 1873K 500kg liquid steel and the comprehensive thermal transmission mechanism in vacuum chamber are studied by using vacuum thermal insulation theory. Results show that as the absolute pressure in chamber of ladle shell and lid is respectively 50Pa and 105Pa for 30min, the temperature drop of liquid in ladle is respectively 8K and 37K, and the conversion convection additional factor value at 105Pa is 200 times as much as that at 50Pa; the thermal conductivity of insulated layer of conventional ladle is 11 times as much as that of vacuum shell ladle with vacuum chamber absolute pressure 50Pa, and the thermal conductivity of working layer refractory materials of conventional ladle is 116 times as much as that new ladle with 50Pa. Therefore, the new ladle with lower pressures in shell has obvious thermal insulation effect.