The change of bubbles and the position of the tuyere in an oxygen coal combustion melting and separating furnace affect the flow and splash behavior of the molten pool. To analyze this problem further, a three-dimensional numerical simulation method was used to explore the behavior and change of the flow field inside the molten pool during double-row tuyere injection. In addition, the arrangement of the tuyere was changed for a more detailed understanding of the internal phase distribution and splashing in a molten pool. The results indicated that under three-dimensional numerical simulation conditions, bubbles rise after leaving the tuyere and break on the surface of the molten pool, which results in certain fluctuations in the nearby melt. During the injection process of the tuyere, the meteorological accumulation in the middle part of the molten pool formed part of the foam slag because of the influence of surface tension. When the layout of the upper and lower exhaust tuyeres was changed from staggered to symmetrical, or when the spacing of the upper and lower exhaust tuyeres changed, it had an effect on the phase distribution and splash behavior.

氧煤燃烧分选炉中气泡的变化和风口位置的变化影响熔池的流动和飞溅行为。为进一步分析该问题，采用三维数值模拟方法探讨了双排风口喷射过程中熔池内部流场的行为和变化。此外，改变了风口的布置，以便更详细地了解熔池中的内部相分布和飞溅。结果表明，在三维数值模拟条件下，气泡离开风口后上升，在熔池表面破裂，导致附近熔体出现一定的波动。在风口注入过程中，由于表面张力的影响，熔池中部的气象堆积形成了部分泡沫渣。当上下排风口的布置由交错变为对称时，或上下排风口的间距发生变化时，都会对相位分布和飞溅行为产生影响。