| 摘要 |
PROBLEM TO BE SOLVED: To contrive the elongation of life of a furnace body and maintain a melting thermal efficiency optimally at the same time by a method wherein a cooling water belt is divided along the peripheral direction of a furnace and the cooling capacity, generated by the cooling water flowing through the divided chambers, is controlled in accordance with an atmospheric temperature in the circumferential direction of the furnace. SOLUTION: A melting furnace 4 is structured so as to have the lining of refractories 5 and the outer periphery of the same is covered by cooling water jacket 6. The water cooled jacket 6 is divided into eight cooling belts A-H by partitioning plates 11a, 11b,...11h so as to be symmetry about the center of a vertical surface connecting a tapping port 8 and an incineration ash supplying port 7. The flow rates of cooling water Q1-Q8 in respective cooling belts A-H are permitted to be increased or reduced independently in accordance with the temperature condition in the furnace respectively. In this case, the cooling water belt is preferably divided into positions having the central angle of at least±30 deg. in the circumferential direction about the tapping hole 8.
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