| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for treating fly ash by which the increase in the quantity of a material to be melted is prevented, the melting temperature is lowered, the generation of the detainment of molten salt in a melting furnace in the melting process is suppressed and HCl content in a waste gas generated in the melting process is reduced at the time of adding a HCl removing agent to the waste gas from a waste incineration furnace, dust-collecting the waste gas with a dust collector and melting the material collected in the dust collector as a melting objective material (the material to be melted) in the melting furnace. SOLUTION: The fly ash treating method is performed by adding a sodium based chemical in the waste gas generated from the incineration furnace of the waste, dust-collecting the waste gas and melting the fly ash collected in the dust collector with plasma in the plasma melting type melting furnace using a plasma torch.</p> |
