2017 Fiscal Year Final Research Report
Evaluation of foaming and viscous behaior of oxide melt characterized by alternative current
| Project/Area Number |
16K14451
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Metal making/Resorce production engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | フォーミングスラグ / インピーダンス / 等価回路 / 気相率 |
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| Outline of Final Research Achievements |
In the present study, a simulated slag foam was produced by dispersing inert gas bubbles in various liquids. The effect varying the volume fraction of the dispersed gas phase on the impedance was then systematically investigated with cylindrical configurations of electrodes, and following equivalent circuit analyses of the Nyquist plots. This found that equivalent circuit analyses on the semicircular Nyquist plots estimated that the electrodes with foaming slag consisted of series circuit of the solution resistance, and parallel junction of the double layer capacitance and the resistance of electric charge transfer. The calibrated resistances of charge transfer on the basis of increase in the electrode surface area reveal good linear relationships against the two-third power of the gas phase fraction in ultrapure water and glycerol solution, which suggests one possibility of the quantitative evaluation for the gas phase fraction of foaming slag characterized by impedance measurement.
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| Free Research Field |
融体物理化学
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