A new technology for treating waste incineration fly ash by shaft furnace

作     者：Cui Wang Long-zhi Chen Zheng-jian Liu Yang Li Yao-zu Wang Ke-xin Jiao Cui Wang;Long-zhi Chen;Zheng-jian Liu;Yang Li;Yao-zu Wang;Ke-xin Jiao

作者机构：State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China 

出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)

年 卷 期：2021年第28卷第7期

页      面：773-784页

核心收录：

学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：Fundamental Research Funds for the Central Universities China(FRF-NP-19-004) 

主　　题：Fly ash Shaft furnace Compressive strength Melting treatment Heavy metal Dioxin 

摘      要：At present,lots of municipal solid wastes(MSWs)are treated by incineration technology,which produces a large amount of fly ash that needs to be treated innocuously.A new method of using metallurgical shaft furnace to treat the MSW fly ash was thus proposed,and some research was done for this ***,the basic physical properties of MSW fly ash were analyzed,and then,the briquetting experiment and melting treatment of MSW fly ash were *** the process of briquet-ting,the influence of different factors(water content,cement content,forming pressure and curing time)on the compressive strength of the briquettes was *** results showed that with the increase in water content,cement content,forming pressure and curing time,the compressive strength of the briquettes increased ***,the compressive strength of the briquettes showed a downward trend when these values exceeded a specific *** the melting experiment,it was found that some heavy metals(such as Cr,Be and Ba)could be solidified in the slag when the fly ash was treated at 1450℃ for 50 min,and the leaching toxicity of heavy metals was lower than the landfill standard of waste in *** the same time,the decomposition rate of dioxins in fly ash reached 99.66%after melting treatment.