生活垃圾焚烧飞灰制备矿物掺合料利用前景展望

Prospects for the Utilization of Mineral Admixture Preparation by MSWI FlyAsh

开展了生活垃圾焚烧(Municipal Solid Waste Incineration,MSWI)飞灰制备矿物掺合料利用前景的展望,以便实现MSWI飞灰的资源化利用。以典型超大城市上海市为例,首先,分析了上海市MSWI飞灰的产量、处置现状和相关政策的演变;其次,分析了国内外MSWI飞灰资源化利用技术的研究现状,提出了MSWI飞灰制备矿物掺合料的资源化利用路径,即对MSWI飞灰进行了无害化处理后与矿渣粉按照一定的比例混合,制备成水泥或混凝土的矿物掺合料的方案;最后,从供需匹配、技术可行、经济效益、工艺简捷和设备可行等方面分析了方案的可行性,探讨了该方案在地基处理、道路基层和干粉砂浆等场景中的应用潜力。该研究成果可为探索MSWI飞灰资源化利用途径和建设无废城市提供参考。

The utilizing municipal solid waste incineration(MSWI) fly ash for produce mineral admixtures is prepared in order to achieve the resource utilization.The typical mega city of Shanghai is taken as an example.Firstly,the production,disposal status of MSWI fly ash and the evolution of related policies in Shanghai were analyzed;Secondly,the research status of MSWI fly ash resource utilization technology at home and abroad were analyzed to propose a resource utilization path for preparing mineral admixtures,which involves harmless treatment of MSWI fly ash and mixing it with slag powder in a certain proportion to prepare mineral admixtures for cement or concrete;Finally,the feasibility of the plan was analyzed from the aspects of supply and demand matching,technological feasibility,economic benefits,simple process,and feasible equipment.The application potential of the plan in scenarios such as foundation treatment,road base,and dry powder mortar was explored.This research result can provide reference for exploring the resource utilization of MSWI fly ash and building a waste-free city.