Influence of the New-type Insulted and Energy-saving Ladle Lining on Temperature and Insulation Properties of Ladle
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摘要: 钢包是炼钢冶炼炉和连铸机之间的主要衔接设备,对连铸顺行起着重要的作用。钢包的保温性能直接影响着冶炼炉出钢温度、铸坯质量、包壁散热、钢包内衬使用寿命、以及生产成本等。通过对现有钢包进行保温性能研究,提出了一种新型的钢包内衬结构,并基于传热学理论应用有限元技术建立了钢包三维有限元模型,对新型钢包和传统钢包保温性能进行了模拟分析。在相同条件下,新型钢包烤包时间要短,节省时间和能源;从钢包外壳温度和钢水温降速度两个方面来验证钢包的保温性能,钢包外壳表征平均温度降低45℃左右,钢包内钢水温度下降速度平均降低了0.27℃/min。Abstract: As the main device for connecting smelting furnace and conticaster,ladle plays an important role in continuous casting.The insulation properties of ladle have significant influence on the temperature lowering of liquid steel,the quality improvement of slab,the heat reduction of the package wall,the prolongation of the service life of ladle lining and the reduction of production costs.Insulation properties of the existing ladle were analyzed.The paper presents a new-type ladle lining.A three-dimensional finite element model of ladle based on heat transfer theory and finite element technique was built to carry out the simulation analysis of the new-type ladle and the traditional ladle.The heating time of the new-type ladle is shorter under the same condition,which saves time and energy.The insulation properties of the new-type ladle were testified from two aspects: the temperature of the ladle shell and the temperature drop speed of molten steel.When the average characteristic temperature of the ladle shell is reduced by 45 ℃ or so,the temperature drop speed of molten steel in the ladle will be reduced by 0.27 ℃/min.
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Key words:
- ladle /
- insulation properties /
- finite element technique
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