RH处理过程钢液流动行为的三维数值模拟

Three-Dimension Numerical Simulation on Liquid Steel Flow Behavior in RH Process

以300 t RH-MFB工艺参数为基础,建立了整个装置内钢液流动的三维数学模型。用双流体模型处理气液两相流,以分析吹氩流量、真空度、吹氩喷嘴排布等因素对钢液流场和循环流量影响。结果表明,当吹氩流量在4000 L/min以下时,循环流量随吹氩流量提高而提高;该装置以67 Pa,吹氩流量3500 L/min,浸渍管浸入深度600 mm和上下交错排布16个吹氩喷嘴较合理。

Based on process parameters of a 300 t RH-MFB unit, the three-dimension mathematical model for liquid steel flow in whole unit has been established. The gas-liquid two-phase flow was treated and described by double-fluid model to analyze the effect of argon flow rate, vacuum, number and location of nozzles on liquid steel flow field and circuiting flow rate. Results show that as argon blowing rate is less than 4 000 L/min, with increasing argon blowing rate , the circuiting flow rate increases ; and it is available for the unit with 67 Pa, argon blowing rate 3 500 L/min, immersion pipe immersing 600 mm and 16 nozzles arranging in interleaving way.