ASH MELTING FURNACE AND METHOD OF REMOVING HIGH-MELTING POINT SUBSTANCE AT ASH MELTING FURNACE

PROBLEM TO BE SOLVED: To provide an ash melting furnace which can extensively melt/remove a high-melting point substance accumulated over a broad area inside at least a melting chamber. SOLUTION: This ash melting furnace includes a fluff burning chamber 12 equipped with a heating burner 3 which uses the fluff obtained by shredding waste plastics into small pieces, as a fuel, and a melting chamber 13 for melting the ash which is placed in a position below the fluff burning chamber 12. In addition, the ash melting furnace includes: a fluff supply device 4 for supplying the fluff; and a melting point depressant supply device 5 which supplies a melting point depressant for depressing the melting point of a high-melting point substance derived from the waste plastics. Also, an air conveyance pipe 22 is arranged which supplies the fluff to the heating burner 3 from the fluff supply device 4 by air conveyance, and the melting point depressant is guided to an air conveyance pipe from the melting point depressant supply device 5 and the melting point depressant is supplied to the heating burner 3 in such a state that the depressant is included in the fluff. Further, at least one selected from the group consisting of ash, glass cullet and slag is used as the melting point depressant. COPYRIGHT: (C)2010,JPO&INPIT