TY - JOUR
T1 - High Efficient Impeller for Rotary Gas Injection in Aluminum Melt
AU - Yamamoto, Takuya
AU - Suzuki, Aire
AU - Komarov, Sergey V.
AU - Shigemitsu, Masaya
AU - Taniguchi, Ryosuke
AU - Ishiwata, Yasuo
N1 - Funding Information:
The present research is supported partly by Collaborative Research Program for Young Scientists of ACCMS and IIMV, Kyoto University. A part of this work was assisted by Mr. Wataru Kato, a Bachelor student at Tohoku University. This study was partly funded by Nippon Light Metal Company, Ltd.
Funding Information:
The present research is supported partly by Collaborative Research Program for Young Scientists of ACCMS and IIMV, Kyoto University. A part of this work was assisted by Mr. Wataru Kato, a Bachelor student at Tohoku University.
Funding Information:
This study was partly funded by Nippon Light Metal Company, Ltd.
Publisher Copyright:
© 2022, The Minerals, Metals & Materials Society and ASM International.
PY - 2022/8
Y1 - 2022/8
N2 - In rotary gas injection (RGI), which is widely used in aluminum industry, impurities are removed by reaction with halide-containing chemicals injected into the melt. However, the constantly increasing concern on environmental protection obliges aluminum makers to eliminate or significantly reduce their usage. In this study, aiming at enhancing the efficiency of chlorine gas treatment for impurities removal from the melt, we investigated the effect of impeller design on the impurity mass transfer by performing physical model experiments on CO2 absorption, particle image velocimetry (PIV) measurements and numerical simulation. It is shown that a newly designed impeller intensifies the discharged flow as compared to the conventional impeller case that forces the formed bubbles to move to the fragmentation zone near the impeller blade tip. This results in an enhancement of the mass transfer. From the numerical results, it was found that these phenomena could be explained by the trailing vortex structure near the impeller blades.
AB - In rotary gas injection (RGI), which is widely used in aluminum industry, impurities are removed by reaction with halide-containing chemicals injected into the melt. However, the constantly increasing concern on environmental protection obliges aluminum makers to eliminate or significantly reduce their usage. In this study, aiming at enhancing the efficiency of chlorine gas treatment for impurities removal from the melt, we investigated the effect of impeller design on the impurity mass transfer by performing physical model experiments on CO2 absorption, particle image velocimetry (PIV) measurements and numerical simulation. It is shown that a newly designed impeller intensifies the discharged flow as compared to the conventional impeller case that forces the formed bubbles to move to the fragmentation zone near the impeller blade tip. This results in an enhancement of the mass transfer. From the numerical results, it was found that these phenomena could be explained by the trailing vortex structure near the impeller blades.
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U2 - 10.1007/s11663-022-02553-y
DO - 10.1007/s11663-022-02553-y
M3 - Article
AN - SCOPUS:85130700839
SN - 1073-5615
VL - 53
SP - 2587
EP - 2599
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
IS - 4
ER -