|
|
Design and Operation Control for Long Campaign Life of Blast Furnaces |
ZHANG Fu-ming |
Beijing Shougang International Engineering Technology Co��, Ltd��, Beijing 100043, China |
|
|
Abstract At the beginning of 1990s, Shougang blast furnaces (BFs) No��2, No��4, No��3 and No��1 were rebuilt sequently for new technological modernization in succession. The campaign life of BFs No��1, No��3 and No��4 reaches 16��4, 17��6 and 15��6 years, respectively, and the hot metal output of one campaign reaches 33��8, 35��48 and 26��37 Mt, respectively; the hot metal output of BF effective volume of one campaign reaches 13328, 13991 and 12560 t/m3, respectively, which reaches the international advanced level of BF high efficiency and long campaign life. In BF designing, several advanced BF long campaign technologies were adopted. BF proper inner profile was optimized, reasonable inner profile was adopted, and closed circulating soften water cooling technology was applied in 4 BFs. Double row cooling pipe high efficiency cooling stave was developed which could prolong the service life of bosh, belly and stack. Hot pressed carbon brick and ceramic cup hearth lining structure were applied and optimized. BF operation was improved continuously to ensure stable and smooth operation of BF. Hearth working condition control was strengthened, burden distribution control technology was applied to achieve reasonable distribution of gas flow, and heat load monitoring was strengthened to maintain BF reasonable working inner profile. Proper maintenance at the end of BF campaign was enhanced. Hearth and bottom service life was prolonged by adding titaniferous material and enhancing hearth cooling. Gunning of lining was carried out periodically for the area above tuyere zone.
|
Received: 12 June 2012
Published: 16 September 2013
|
Corresponding Authors:
Fu-Ming ZHANG
E-mail: liaodong12@sina.com
|
|
|
|
[1] |
Hong-tao Wang,Wei Zhao,Man-sheng Chu,Cong Feng,Zheng-gen Liu,Jue Tang. Current status and development trends of innovative blast furnace ironmaking technologies aimed to environmental harmony and operation intellectualization[J]. Chinese Journal of Iron and Steel, 2017, 24(8): 751-769. |
[2] |
Wei Zhang,,Zheng-liang Xue,Ju-hua Zhang,Wei Wang,Chang-gui Cheng,Zong-shu Zou. Medium oxygen enriched blast furnace with top gas recycling strategy[J]. Chinese Journal of Iron and Steel, 2017, 24(8): 778-786. |
[3] |
Qian-qian Ren,,Yu-zhu Zhang,,*,Yue Long,Shao-sheng Chen,Zong-shu Zou,Jie Li, Chen-guang Xu. Crystallization behavior of blast furnace slag modified by adding iron ore tailing[J]. Chinese Journal of Iron and Steel, 2017, 24(6): 601-607. |
[4] |
Xue-feng She,*,Xiu-wei An,Jing-song Wang,Qing-guo Xue,Ling-tan Kong. Numerical analysis of carbon saving potential in a top gas recycling oxygen blast furnace[J]. Chinese Journal of Iron and Steel, 2017, 24(6): 608-616. |
[5] |
Xun-fu Wang,,Qi-jie Zhai. Corrosion mechanism research and microstructure analysis of Baosteel No��3 blast furnace hearth[J]. Chinese Journal of Iron and Steel, 2017, 24(10): 1016-1022. |
[6] |
Chong Zou,*,Liang-ying Wen,Jun-xue Zhao,Rui-meng Shi. Interaction mechanism between coal combustion products and coke in raceway of blast furnaces[J]. Chinese Journal of Iron and Steel, 2017, 24(1): 8-17. |
|
|
|
|