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Vol.46, No.2, 65 ~ 69, 2008
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| Title |
| The Study on the Power Consumption for Glass Melting by Cold Crucible Melter |
| 진현주 Hyun Joo Jin , 이규호 Kyu Ho Lee , 장영재 Young Jae Jung , 배소영 So Young Bae , 김태호 Tae Ho Kim , 정영준 Young Joon Jung , 김영석 Young Seok Kim , 이강택 Kang Taek Lee , 류봉기 Bong Ki Ryu |
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| Abstract |
| Generally CCM (cold crucible melting) is not suitable for melting glass. However, in this study we described the quantitative relationship between the basic property of glass and power balance, the power absorption in the melt, the losses in the coil and the cold crucible, for melting glass in CCM. The dependence of power balance on the applied frequency and the electric conductivity has been found. Above 300 kHz, the glass (B) contained alkali ion which has the low resistance 3.0 Ω·cm at 900℃ and 1.36 Ω·cm at 1,100℃ was melted easily and 60% of the overall power was absorbed in the melt and 30% and 10% of the overall power was lost in the cold crucible and coil respectively. Under the same condition, the glass (A) contained non-alkali ion was not melted easily and 50% of the overall power was absorbed in the melt and 40% and 10% of the overall power was lost in the cold crucible and coil respectively. In conclusion, the small absorbed power of the overall power in melt prevented a successful melting as for glass A, and the successful melting depends on the relative size of the absorbed power in melt irrespective of the melting volume. Hence, as typical for direct induction heating method(CCM), the successful melting strongly depended on the chosen working frequency based on electric conductivity of glass, power balance and the control of the critical power which was absorbed in melt. |
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| Key Words |
| CCM, cold crucible melter, electric conductivity, power balance |
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