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| Application status and important technical indexes of BF hearth refractory |
| ZUO Hai-bin1，WANG Cong1，ZHANG Jian-liang2，ZHAO Yong-an3，JIAO Ke-xin2 |
1. State Key Laboratory of Advanced Metallurgy， University of Science and Technology Beijing， Beijing 100083，China
2. School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083，China
3. Henan Wunai Industrial Group Co.， Ltd.， Gongyi 451250， Henan， China |
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Abstract Based on BF long campaign concept， the importance of high quality refractory materials for BF hearth was discussed; BF hearth refractory materials can be divided into three categories as follows: the carbon brick， the corundum brick and the carbon composite brick. The development of these three kinds of refractory materials at home and abroad was described. The mechanism of four important performance indicators was explained， including the thermal conductivity， hot metal corrosion index， slag resistance and micro porosity index. The performance indexes of the three kinds of refractory were compared. The results are as follows: the comprehensive performance of carbon composite brick is better than that of carbon brick and ceramic cup；the development of refractories should pay attention to improve the index co-ordination；the carbon composite material is the development direction of the new generation of hearth lining.
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Received: 06 May 2014
Published: 02 February 2015
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2015, Vol. 50 
