| 摘要 |
PURPOSE:To realize the reduction of installation area as well as the improvement of workability and thermal efficiency, resulting from the compacting of a device, by a method a melting burner is provided at the lower side surface of a preheating tower unit so that a flame is injected obliquely downward from the lower part of the preheating tower unit toward a melting unit. CONSTITUTION:Thrown melting material is changed into a preheating tower unit 2a and a melting unit 2b. Reducing high-temperature and strong flame, injected out of a melting burner 4, arrives at the deep part of the material so as to envelope the whole periphery of the melting material in the melting unit 2b whereby the melting material in the melting unit 2b is melted at a high speed. The strong flame is injected obliquely downward toward the melting unit 2b and, therefore, the rising hot air in the melting unit 2b is hindered and strong turbulent flow is generated in the melting unit 2b whereby the high- speed melting of the melting material may be promoted. Hot air, rising from the melting unit 2b, rises through the preheating tower unit 2a while being mixed by receiving the effect of the turbulent flow the chance to make contact with the melting material is increased whereby the hot air rises while realizing big preheating effect.
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