| 摘要 |
<p>An incineration melting furnace provided in an inner portion thereof with a furnace body in which a conductive heating element (for example, graphite) is packed, and an induction coil provided around the furnace body. A combustion air supply conduit communicates with a space formed on the upper side of an upper end of a conductive heating element-packed region of the interior of the furnace body. The furnace body has a solid material inlet port adapted to be opened and closed, and a discharge port, from which a molten material is discharged, at a lower end portion of the furnace body. The temperature of the conductive heating element becomes high when it is induction heated with the induction coil. The combustion air is supplied to the portion of the furnace body which is higher than the upper end of the conductive heating element-packed region. The radioactive inflammable materials contacting the conductive heating element are burnt, and radio-active non-inflammable materials melted. An exhaust gas and molten materials occurring in this combustion-melting operation flow down in the conductive heating element-packed region, and flow out from the discharge port. The noxious gases, such as dioxine contained in the exhaust gas are thermally decomposed and made innoxious in a high-temperature portion of the conductive heating element-packed region.</p> |
