摘要
粉煤灰是火力发电厂燃煤产生的大宗工业固体废弃物,富含丰富的铝资源。基于生态环境效益及我国铝土矿资源匮乏的双重驱动,从粉煤灰中回收铝资源具有重要意义。主要综述了酸法、碱法和其他方法等粉煤灰中回收铝资源的方法,比较了氧化铝提取率、反应温度和酸碱浓度等主要技术指标,总结和讨论了现有技术的优缺点,指出上下游产业链的构建是粉煤灰中铝资源回收产业化的迫切问题,提出紧密结合地方区域循环经济发展,研发绿色、温和、副产品综合利用的新技术是未来粉煤灰综合利用产业发展的必由之路。
Coal fly ash(CFA)is a bulk industrial solid waste generated from coal combustion in thermal power plants,which is rich in aluminum resources.Based on the dual drive of ecological and environmental benefits and the scarcity of bauxite resources in China,it is of great significance to recover aluminum resources from CFA.The methods of recovering aluminum resources from CFA by acid method,alkali method and other methods were mainly reviewed,and the main technical indexes such as alumina extraction rate,reaction temperature and acid-base concentration were compared.The advantages and disadvantages of the existing technologies are summarized and discussed.It is pointed out that the construction of upstream and downstream industrial chain is an urgent issue for the industrialization of aluminum resources recovery from CFA.It is suggested that closely combining with the development of local regional circular economy,the development of green,mild and new technology of comprehensive utilization of by-products is the only way to develop the comprehensive utilization industry of fly ash in the future.
作者
罗振勇
陈沐阳
公彦兵
Byambagar Batdelger
Tungalagtamir Bold
LUO Zhenyong;CHEN Muyang;GONG Yanbing;BATDELGER Byambagar;BOLD Tungalagtamir(Guiyang Aluminum Magnesium Design&Research Institute Co.,Ltd.,Guiyang 550081,China;College of Chemical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;National and Local Joint Engineering Research Center for High Value Utilization of Coal-based Solid Waste,Hohhot 010051,China;School of Applied Sciences,Mongolian University of Science and Technology,Ulaanbaatar 14201,Mongolia)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2024年第5期53-61,共9页
Nonferrous Metals（Extractive Metallurgy)
基金
国家重点研发计划项目(2021YFE0102200)
内蒙古自治区科技计划项目(2021GG0352)
呼和浩特市科技计划项目(2022-社-6)。
关键词
粉煤灰
铝
酸法
碱法
循环经济
coal fly ash
aluminum
acid method
alkali method
circular economy
