Municipal solid waste incinerator fly ash (MSWI FA) is a type of waste that is harmful to the environment, and the melting treatment methods can treat MSWI FA, removing its potential negative impacts. However, special equipment is required for the FA melting process, which necessitates high costs. Metallurgical shaft furnaces (MSF) can melt MSWI FA efficiently. Therefore, the feasibility of using an MSF for FA treatment was studied herein. First, the fundamental physicochemical properties of the FA were analyzed. Then, the appearance and internal morphology of the FA were examined using a scanning electron microscope. Finally, melting experiments were designed according to the conditions of the MSF. The results show that slag changes into a glassy state under rapid cooling, which is beneficial to the solidification of harmful elements. These harmful elements, including Pb, Zn, and Cu, are thus reduced and volatilized into the flue gas under the MSF’s reducing atmosphere. The harmful elements that enter the slag are solidified, causing its leaching toxicity to achieve the national standard requirements. Further, under the simulated MSF smelting conditions, the FA dioxin destroy removal efficiency realized more than 99.99% efficiency. Therefore, the harmless treatment of MAWI FA can be realized through MSF process.

市政固体废物焚烧飞灰（MSWI FA）是一种对环境有害的废物，其熔融处理方法可以处理MSWI FA，消除了其潜在的负面影响。然而，FA熔融过程需要专用设备，这需要高成本。冶金竖炉（MSF）可以有效地熔化MSWI FA。因此，本文研究了使用MSF进行FA治疗的可行性。首先，分析了FA的基本理化性质。然后，使用扫描电子显微镜检查FA的外观和内部形态。最后，根据MSF的条件设计了熔解实验。结果表明，炉渣在快速冷却下变成玻璃态，有利于有害元素的凝固。因此，这些有害元素（包括Pb，Zn和Cu）在MSF的还原性气氛下被还原并挥发到烟道气中。进入炉渣的有害元素被固化，导致其浸出毒性达到国家标准要求。此外，在模拟的MSF熔炼条件下，FA二恶英破坏去除效率实现了99.99％以上的效率。因此，可以通过MSF工艺实现MAWI FA的无害化处理。FA二恶英清除破坏效率达到99.99％以上。因此，可以通过MSF工艺实现MAWI FA的无害化处理。FA二恶英的清除效率达到了99.99％以上。因此，可以通过MSF工艺实现MAWI FA的无害化处理。