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1.喷射冶金过程气液相的接触面积可近似用下式计算: A/d_(ni)~2=651.2·Fr~(0.341)·(H/d_(ni))~(0.314) (1)式中 A——气液相接触面积,cm~2; d_(ni)——喷枪内径,cm; H——喷枪插入深度,cm; Fr=(ρ_g·u_0~2)/((ρ-ρ_g)·g·d_(ni)),Froude准数。 2.证实了喷射冶金过程液相中气泡尺寸的对数正态分布,在此基础上建立了一种新的计算A值的数学模型,其计算结果可与(1)式基本吻合。 3.在水模型和150kg感应炉上进行了实测A值的实验,其结果为(1)式的实用性提供了证据。
1. Jet Metallurgical Process Gas-liquid contact area can be approximated by the following formula: A / d_ (ni) ~ 2 = 651.2 · Fr ~ (0.341) · (H / d_ (ni)) ~ (0.314) Where A is the gas-liquid contact area, cm 2; d ni is the inner diameter of the spray gun in cm; H is the depth of the spray gun insertion in cm; Fr = (ρ_g u_0 ~ 2) / (ρ -ρ_g ) · G · d_ (ni)), Froude Quasi. 2. Confirmed the logarithm normal distribution of bubble size in the liquid phase of jet metallurgy process, and established a new mathematic model to calculate the value of A, which can be basically consistent with (1). 3. Experiments on measured A values were carried out on a water model and a 150 kg induction furnace and the results provided evidence for the practicality of (1).