【摘要】 以本工作第一部分中所提出的表征热源作用下管式和套管式等截面喷枪气体流动特性的基本方程和计算公式，分析了１８ｔＡＯＤ炉用套管式喷枪的气体流动特性，考察了加热和摩擦效应、供气压力、气体种类和成分等的影响，结果表明，热源的存在对等截面喷枪内气体流动特性有相当大的影响．其效果与增强摩擦效应相一致，使出口气量显著减小；对应用于实际冶金过程的等截面喷枪进行设计和气体流动特性计算时，按绝热摩擦流处理会产生相当大的偏差，必须考虑来自高温熔体和耐火炉衬等的加热效应；供气压力对等截面喷枪内的气体流动特性有决定性的作用；喷吹气体种类和成分会影响等截面喷枪内气体流动特性，对于给定的喷枪和体系，喷吹不同的气体时应根据工艺要求采用不同的喷吹参数更多还原

【Abstract】 The flow properties of the gases in an annular type tuyère used for an AOD vessel of 18 t capacity have been analyzed with the basic equations and calculation formulas presented in the first part of this work, and the influence of heating and friction effects, gas supply pressure, kind and composition of gases and others has been considered. The results show that the presence of heat source can significantly affect the gas flow properties in a tuyère, is of the same effectiveness as increasing friction action, and decreases obviously the gas flow rate at the outlet; in designing a tuyère used for a practical process of metallurgy and calculating the flow properties of gas in it, the treatment on the basis of an adiabatic friction flow will bring about a considerable deviation and the heating effect from the high temperature melt and refractory lining must be taken into account; the gas supply pressure has a decisive role to the properties, the kind and composition of injection gases will also influence the properties, and for a given tuyère and system, the different injection parameters for different gases should be used according to the technological requirements.更多还原