概要:
ごみ焼却残渣の溶融固化処理は,生成物であるスラグ,メタル,溶融飛灰の利材化,資源化により,最終処分を解消できる資源循環システムとして期待される。NKK電気抵抗式灰溶融炉は,独自の溶融方法により,鉛など有害金属の少ない安全で均質なスラグを生成できる。この良質なスラグは細骨材,粗骨材,路盤材などの土木建設資材として広く利用される。本稿では,スラグの多彩な加工技術,利用技術を紹介する。
Abstract:
It is expected that vitrification of the residues from a municipal solid waste incinerator would be resource recovery method in which products of slag, metal, dust could be used as resources or changed into another useful products, resulting in no need of landfilling. Safe and uniform slag containing low concentration of heavy metals is produced from NKK electric-resistance ash melting furnace with an original melting method. The good quality slag is widely utilized for construction use such as crushed stone drain material, concrete aggregate and roadbed materials. In this paper, various processing and utilizing technologies for the slag from this melting furnace will be described.
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