为定量分析炉缸侵蚀影响因素,计算了膨胀缝、炭砖导热系数、炭砖尺寸对炭砖热应力的影响程度.当炭砖完全约束时,炭砖的热应力是未约束的3倍多;当断面尺寸由1 500 mm×400 mm×400 mm变到300 mm×220 mm×114 mm时,热应力从11.8 MPa降至3.9 MPa,导热系数由5 W/(m·℃)增大到30 W/(m·℃),热应力从13.3 MPa降至10.2 MPa;计算出死料堆漂浮与沉坐炉底这2种工况下炉缸大部分区域铁水的流速在2.5×10-3 m/s以下,并分析铁流在炉缸内的变化规律,且计算出铁水对炭砖的机械冲刷力在1 Pa以下,分析了铁水温度和流速对炭砖溶解的影响.在此基础上,提出建立炉缸良好传热体系是解决炉缸炭砖侵蚀的重要技术方向.
参考文献
| [1] | Yu Zhang;Rohit Deshpande;D. (Frank) Huang;Pinakin Chaubal;Chenn Q. Zhou .Numerical analysis of blast furnace hearth inner profile by using CFD and heat transfer model for different time periods[J].International Journal of Heat and Mass Transfer,2008(1/2):186-197. |
| [2] | Chen-En HUANG;Shan-Wen DU;Wen-Tung CHENG .Numerical Investigation on Hot Metal Flow in Blast Furnace Hearth through CFD[J].ISIJ International,2008(9):1182-1187. |
| [3] | Takanobu INADA;Atsuya KASAI;Kaoru NAKANO .Dissection Investigation of Blast Furnace Hearth-Kokura No. 2 Blast Furnace (2nd Campaign)[J].ISIJ International,2009(4):470-478. |
| [4] | Cheng WT;Huang CN;Du SW .Three dimensional iron flow and heat transfer in the hearth of a blast furnace during tapping process[J].Chemical Engineering Science,2005(16):4485-4492. |
| [5] | 黄希祜.钢铁冶金原理.修订版[M].北京:冶金工业出版社,1981 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%