高炉炉缸内衬的温度场设计及其状态与寿命研究

来源期刊：钢铁2009年第9期

论文作者：曹永国 吴胜利 王筱留 韩宏亮

文章页码：11 - 15

关键词：高炉； 炉缸内衬； 温度场设计； 状态判断； 炉缸寿命推测

Key words：blast furnace； BF hearth lining； thermal distribution design； status analysis； BF hearth lifetime prediction

摘    要：根据高炉炉缸在实际生产中的情况,将炉缸内衬划分为有限单元,采用能量平衡原理建立炉缸内衬温度分布模型,并应用于高炉炉缸内衬设计,进而对炉缸的工艺设计做必要的调整优化,以此获得合理的炉缸内衬温度分布。在此基础上,通过实际生产中的内衬温度推测炉缸内衬侵蚀程度,对炉缸内衬的寿命进行预测。研究结果表明:采用了温度场分布设计技术优化的碳砖-陶瓷杯炉缸内衬的高炉,陶瓷杯侵蚀速率很缓慢,推测"蒜头"状部位的陶瓷杯使用时间可达10 a以上。

Abstract: Thermal distribution model of BF hearth lining is established on the base of energy balance principle by dividing BF hearth lining into limited units according to operation conditions of BF hearth,which has been applied to BF hearth lining design and necessary BF process design optimizing to achieve reasonable thermal distribution in BF hearth lining.On the base of it,the working lifetime of BF hearth lining could be predicted by predicting BF hearth lining corrosion conditions according to thermal couple readings in BF hearth lining during BF operation.The study has shown that corrosion speed of ceramic cup is very slow for the blast furnaces which adopt "Carbon-Ceramic Cup" hearth lining optimized by thermal distribution design technology.It is predicted that the lifetime of ceramic cup at "Elephant Foot" area could be more than 10 years.