Research on Rational Structure of BF Hearth Bottom
ZHAO Hongbo1,CHENG Shusen1,ZHAO Minge2
1. Metallurgy and Ecology Engineering School, University of Science and Technology Beijing, Beijing 100083, China； 2. Shougang Research Institute of Technology, Shougang Group Corporation, Beijing 100041, China
Abstract：According to the theory of heat transfer, based on the calculated temperature distribution in hearth bottom, it is clear that all the brick layers in hearth bottom can not be considered as a whole one for different structures result in different temperature distribution though total heat resistance is the same. Thus, the disadvantages of allcarbon brick and ceramic cup synthetic hearth bottoms are described. According to the effects of hot metal and cooling water, the conception of “heating avoidance” and “cooling intensification” is brought forward, and a new design BF hearth bottom is proposed, which is easy to form “selfprotecting” slag layer, called “method of gradient brick laying” as an optimum combination of cooling intensification and heating avoidance”, it can not only prolong the hearth bottom campaign but also reduce cost and heat loss.
赵宏博;程树森;赵民革. 高炉炉缸炉底合理结构研究[J]. 钢铁, 2006, 41(9): 0-18.
ZHAO Hongbo;CHENG Shusen;ZHAO Minge. Research on Rational Structure of BF Hearth Bottom. Iron and Steel, 2006, 41(9): 0-18.
2006, Vol. 41 