粉煤灰分质高效利用预处理技术的研究进展  

Research progress of pretreatment technology for efficient utilization of coal ash

作　　者：王倩 李神勇 康帅[1] 庞薇 郝龙龙 秦身钧 WANG Qian;LI Shenyong;KANG Shuai;PANG Wei;HAO Longlong;QIN Shenjun(College of Material Science and Engineering,Hebei University of Engineering,Handan 056038,Hebei,China;Key Laboratory of Resource Exploration Research of Hebei Province,Hebei University of Engineering,Handan 056038,Hebei,China)

机构地区：[1]河北工程大学材料科学与工程学院,河北邯郸056038 [2]河北工程大学河北省资源勘测研究重点实验室,河北邯郸056038

出　　处：《化工学报》2023年第3期1010-1032,共23页CIESC Journal

基　　金：国家自然科学基金项目(42172191);河北省自然科学基金项目(D2021402013,E2020402075);河北省教育厅在读研究生创新能力培养资助项目(CXZZSS2023119)。

摘　　要：粉煤灰作为典型的大宗固体废弃物,其综合高效利用受到广泛关注。我国粉煤灰排放量巨大,但利用率较低,如何通过减少其对生态环境造成的破坏、对人类健康造成的威胁和提高其经济效益来实现粉煤灰资源化利用是目前研究的热点。粉煤灰的活性大小是提高粉煤灰综合利用率的关键所在,对粉煤灰进行预处理可提高其活性。本文综述了焙烧、研磨、微波、超声波、加压、真空、表面活性剂等预处理技术在粉煤灰分质高效利用工艺中的作用,重点介绍有价元素浸出分离的应用研究。通过比较不同预处理技术的应用范围和效果,指出了各种预处理技术的优缺点,为粉煤灰的有效综合利用提供合适的预处理参考方案。As a typical bulk solid waste,fly ash has received extensive attention for its comprehensive and efficient utilization.In China,coal ash emissions are huge,but the utilization rate is low.How to realize the resourceutilization of coal ash through reducing its burden on ecological environment,the threat to human health and improving its economic benefit is a hot topic.The activity of fly ash is the key to improve the comprehensive utilization of fly ash.Pretreatment of fly ash can improve its activity.In this paper,the functions of roasting,grinding,microwave,ultrasonic,pressure,vacuum and surfactant pretreatment technologies in the comprehensive utilization of fly ash are reviewed,and the application of leaching and separation of valuable elements is emphasized.By comparing the application scope and effect of different pretreatment technologies,the advantages and disadvantages of each pretreatment technology are pointed out,so as to provide suitable pretreatment reference scheme for the effective and comprehensive utilization of fly ash.

关 键 词：粉煤灰 高效利用 预处理技术 活性提高 浸出分离 

分 类 号：TQ536.4[化学工程—煤化学工程]