Abstract:Aiming at the splashing behavior in the melting process of the oxygen combustion melting and separating furnace, the VOF multiphase flow model coupled with the Realizable k-ε turbulence model in Fluent was used for numerical simulation, which was verified by the water model test. The effects of different process parameters (flow, inclination, diameter, and immersion depth) on splash height were explored. The results showed that the slag splashing was caused by the escape and fragmentation of the residual kinetic energy bubbles. With the increase of the flow of the oxygen lance, the splash height increased continuously, and the splash height reached 3.13 m when the flow was 0.28 kg/s. The maximum splash height was 3.07 m when the tilt angle was -10°. Increasing the diameter of the oxygen lance caused that the spray height was increased first and then decreased, the maximum spray height was 3.09 m when the diameter was 30 mm. Decreasing the immersion depth of the oxygen lance was beneficial to reduce the splash height, when the immersion depth was 150 mm, the splash height was about 3.075 m.
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