Floating and Mass Transfer of Bottom-blown Nitrogen Bubbles in Sm-Fe Melt AITranslate
Abstract AITranslate
Based on the general rule of gas-liquid two-phase flow,the floating and mass transfer of bottom- blown nitrogen bubbles in the Sm-Fe melt were studied. The relationship between the radius of nitrogen bubbles in liquid Sm-Fe alloy and time in the process of floatation was discussed, and the mass transfer rate was also analyzed. The results show that the radius of nitrogen bubbles in the Sm-Fe melt increases with the increase of time at atmospheric pressure, and the air pressure has a significant inhibition effect on the growth of nitrogen bubbles. At atmospheric pressure, the mass transfer rate of bubbles increases at first and then decreases with time increasing in the floating process of nitrogen bubbles. When the floating time equals to 7.8 s,the mass transfer rate reaches the maximum value of 6.2×10^-11mol/（m^3·s）. When the floating time is less than 7.8 s, the bubble radius plays a leading role in the mass transfer of bubbles. When the floating time is more than 7.8 s,the concentration of bubbles plays a leading role. Meanwhile,with the increase of air pressure the maximum mass transfer rate is reduced and the time to achieve the maximum mass transfer rate is increased.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.45[金属学及工艺—金属材料]
Citation Information:
Based on the general rule of gas-liquid two-phase flow,the floating and mass transfer of bottom- blown nitrogen bubbles in the Sm-Fe melt were studied. The relationship between the radius of nitrogen bubbles in liquid Sm-Fe alloy and time in the process of floatation was discussed, and the mass transfer rate was also analyzed. The results show that the radius of nitrogen bubbles in the Sm-Fe melt increases with the increase of time at atmospheric pressure, and the air pressure has a significant inhibition effect on the growth of nitrogen bubbles. At atmospheric pressure, the mass transfer rate of bubbles increases at first and then decreases with time increasing in the floating process of nitrogen bubbles. When the floating time equals to 7.8 s,the mass transfer rate reaches the maximum value of 6.2×10^-11mol/（m^3·s）. When the floating time is less than 7.8 s, the bubble radius plays a leading role in the mass transfer of bubbles. When the floating time is more than 7.8 s,the concentration of bubbles plays a leading role. Meanwhile,with the increase of air pressure the maximum mass transfer rate is reduced and the time to achieve the maximum mass transfer rate is increased.
quote
| GB/T 7714-2015 | [1] YUAN Liang-liang, GAO Ai-min, MA Hai-tao, et al. Floating and Mass Transfer of Bottom-blown Nitrogen Bubbles in Sm-Fe Melt[J]. Rare Metals and Cemented Carbides, 2018(2): 32-36. |
| MLA | [1] YUAN Liang-liang, et al., "Floating and Mass Transfer of Bottom-blown Nitrogen Bubbles in Sm-Fe Melt." Rare Metals and Cemented Carbides, no. 2, 2018, pp. 32-36. |
| APA | [1] YUAN Liang-liang, GAO Ai-min, MA Hai-tao, WANG Shu-huan, & ZHAO Ding-guo. (2018). Floating and Mass Transfer of Bottom-blown Nitrogen Bubbles in Sm-Fe Melt. Rare Metals and Cemented Carbides(2), 32-36. |
| IEEE | [1] YUAN Liang-liang, GAO Ai-min, MA Hai-tao, WANG Shu-huan, and ZHAO Ding-guo, "Floating and Mass Transfer of Bottom-blown Nitrogen Bubbles in Sm-Fe Melt," Rare Metals and Cemented Carbides, no. 2, pp. 32-36, 2018. keywords: {Sm-Fe melt;nitrogen bubble;floating;mass transfer} |