Physicochemical Properties of Fly Ash From Waste Incineration Power Plants and Study of Slaking Mechanism

ABSTRACT With the acceleration of urbanization, the treatment of municipal solid waste (MSW) has become one of the global challenges. The waste incineration process will produce fly ash containing a large amount of heavy metals and organic matter. The aim of this work is to investigate the physicochemical properties of fly ash and its roasting mechanism to provide a scientific basis for the safe handling and resource utilization of fly ash. Through the systematic analysis of fly ash samples from several waste incineration power plants of Guangzhou Environmental Investment Co., it was found that the physicochemical properties of fly ash are affected by various factors, including fuel type, combustion mode, furnace structure, fly ash temperature, hygroscopicity, etc. Through laser particle size analysis, XRD, XRF, and other technical means, this study characterizes the physicochemical properties of fly ash in detail and investigates how these properties affect the deposition behavior and slaking characteristics of fly ash in the flue. The research results provide a scientific basis and technical support for preventing and solving the problem of ash plugging in the flue gas of boilers, thus promoting the continuous progress and development of waste incineration power plants generation technology.