In order to assess the wear damage of the lining refractory in the RH degasser, a transient 3D numerical model has been established using volume of fluid approach-discrete phase model (VOF-DPM) technology. The gas-oil-water three-phase flow in a RH degasser water model was evaluated. The breakup and coalescence of gas bubble was taken into account, and moreover the bubble diameter changed with static pressure. The wall shear stress and turbulence intensity were employed to predicate the erosion rate of the lining refractory, while the diffusion coefficient of the refractory material and the slag property at high temperature were used to consider the corrosion rate. The effects of the operational parameters on the refractory wear rate were clarified. A careful comparison between the experimental and the numerical results was conducted for the model validation. The results show that the wear behavior of the lining refractory at the up snorkel wall is the most severe due to the rapidly rising bubble. The vacuum chamber wall that near the up snorkel is also subjected to a serious wear damage. Besides, a higher wear rate is observed at the ladle wall that close to the oil/water interface, since both the physical erosion and chemical corrosion contribute to the wear damage of the lining refractory here. The developed model could help smelters to estimate the remaining thickness of the refractory in the RH degasser under different operational conditions.

为了评估RH脱气机中炉衬耐火材料的磨损损伤，已使用流体进近离散相模型（VOF-DPM）技术建立了瞬态3D数值模型。对RH脱气器水模型中的油气水三相流进行了评估。考虑到气泡的破裂和聚结，并且气泡直径随静压力而变化。利用壁面剪切应力和湍流强度来确定衬里耐火材料的腐蚀速率，而利用耐火材料的扩散系数和高温下的炉渣性能来考虑腐蚀速率。明确了操作参数对耐火材料磨损率的影响。在实验和数值结果之间进行了仔细的比较，以进行模型验证。结果表明，由于气泡的迅速上升，上层通气管壁的耐火材料的磨损行为最为严重。靠近通气管的真空室壁也受到严重的磨损损坏。此外，在钢包壁靠近油/水界面处观察到较高的磨损率，因为物理腐蚀和化学腐蚀都对此处的耐火衬里的磨损造成了损害。开发的模型可以帮助冶炼厂估算不同操作条件下RH脱气机中耐火材料的剩余厚度。结果表明，由于气泡的迅速上升，上层通气管壁的耐火材料的磨损行为最为严重。靠近通气管的真空室壁也受到严重的磨损损坏。此外，在钢包壁靠近油/水界面处观察到较高的磨损率，因为物理腐蚀和化学腐蚀都对此处的耐火衬里的磨损造成了损害。开发的模型可以帮助冶炼厂估算不同操作条件下RH脱气机中耐火材料的剩余厚度。结果表明，由于气泡的迅速上升，上层通气管壁的耐火材料的磨损行为最为严重。靠近通气管的真空室壁也受到严重的磨损损坏。此外，在钢包壁靠近油/水界面处观察到较高的磨损率，因为物理腐蚀和化学腐蚀都对此处的耐火衬里的磨损造成了损害。开发的模型可以帮助冶炼厂估算不同操作条件下RH脱气机中耐火材料的剩余厚度。因为物理腐蚀和化学腐蚀都会造成衬里耐火材料的磨损损坏。开发的模型可以帮助冶炼厂估算不同操作条件下RH脱气机中耐火材料的剩余厚度。因为物理腐蚀和化学腐蚀都会造成衬里耐火材料的磨损损坏。所开发的模型可以帮助冶炼厂估算不同操作条件下RH脱气机中耐火材料的剩余厚度。