| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a treating method of waste material using a cupola, by which the dust developed from the cupola and the cast waste material developed after casting can be recovered as the useful material for the industry and the above dust and cast waste material can be reduced. SOLUTION: A dust collector 3 for collecting the dust is arranged at a gas exhausting duct 2 from the cupola 1 and <=10% dust in the total dust collected by this dust collector 3, is recovered. Further, >=90% the residual dust and the cast waste material 13 are supplied into burners 5 and the supplying of the dust and the cast waste material 13 into the burners 5 is repeatedly executed and then, the above dust is circulatingly treated in the inside and the outside of the cupola 1.</p> |
