铝灰渣是在原铝冶炼、铝合金加工、铝再生利用过程中产生的固体废物,属于危险废物.本案例为疑似铝灰非法倾倒物的危废鉴别,通过对疑似铝灰的表观特征及物相组成分析,发现与铝灰匹配度较高,判断鉴别物料为铝灰.通过对各类铝灰产生工艺分析及浸出氟化物浓度、铝含量等指纹特征分析,推断倾倒物来源为再生铝生产和加工过程中产生的二次铝灰.因此,得出倾倒物属于危险废物的鉴别结论,为其他同类型鉴别提供指导和参考.
Aluminum ash is a solid waste generated in the process of primary aluminum smelting,aluminum alloy processing and aluminum recycling,which belongs to hazardous waste.This case is the hazardous waste identification of suspected illegal dumping of aluminum ash.Through the analysis of the apparent characteristics and phase composition of suspected aluminum ash,it is found that it has a high matching degree with aluminum ash,which means the identification material is aluminum ash.Then,through the analysis of various aluminum ash production processes and fingerprint characteristics such as leaching fluoride concentration and aluminum content,it is inferred that the source of dumping is secondary aluminum ash produced in the production and processing of recycled aluminum.Therefore,it is concluded that the dump belongs to hazardous waste,providing guidance and reference for other similar identification.