梅钢40 t板坯中间包的工业试验与仿真分析

来源期刊：中南大学学报(自然科学版)2001年第1期

论文作者：程乃良 彭世恒 王建军 肖泽强

文章页码：36 - 40

关键词：中间包;仿真;梅山钢铁公司

Key words：slab casting tundish; simulation; Meishan Iron and Steel Cooperation

摘    要：梅山钢铁公司炼钢厂有2座150 t的LD转炉,配40 t板坯连铸中间包.为了了解和掌握中间包内部过程的基本特征,在实际中间包内对流动控制装置、钢水停留时间分布及熔池内温度分布情况进行了现场测试,并结合数学和物理模拟方法进行分析.研究结果表明:钢包与中间包内钢水的温差对中间包内钢水的流动状态有很大影响,进而影响着中间包内许多冶金过程;实际中间包熔池内温度分布不均,即使没有任何流动控制装置,熔池内上部温度也高于下部温度,现场测定的停留时间曲线与传统的等温水模型实验结果相差较大;在大多数生产条件下,中间包内的流动是非等温流动,以等温条件为前提的挡板设计、控制参数可能与实际情况不符,应该重新鉴别.

Abstract: A 2×150 t LD converter steel plant equippedwith 40 t slab continuous casting tundish has been put into operation inMeishan Iron and Steel Cooperation. To understand the basic process property in the tundish, an industrial teson flowcontrol, residence time distribution and steel temperature distribution in the bath, combinedwith a physico-math ematical simulation has been carried out. The results show that the temperature difference of steel between ladle an tundish significantly influences the flow property and sequentially many metallurgical processes in the tundish. In practice, molten steel temperature in tundish bath is heterogeneous, and even without any flow control equipment, temperature on the top can be higher than that at the bottom. It iswell known that residence time distribution obtained by industrical measurement is very different fromthat obtained by experiment with conventional isothermal watermodel. It is suggested thatthe basic property of tundish flow should be considered as a non-isothermal flowinmost production conditions.