煤炭转化2017，Vol.40Issue(4)：69-73,5.
粉煤灰浸提活性激发实验研究
Experimental Study on Activation of Fly Ash Extraction Activity
摘要
Abstract
The behavior of directly acid leaching and alkali leaching of fly ash,as well as activation process (mechanical activation,microwave activation and muffle furnace activation),and whether add sodium carbonate additives for muffle furnace activation were investigated.The results indicate that the dissolution rate of the directly acid leaching and alkali leaching is only 4.50％ and 10.05％,respectively.In the presence of additives,the acid leaching dissolution rate of chemical-activated fly ash is 97.34％,while the mechanical-activated and microwave-activated fly ash have acid leaching dissolution rate of 11.00 ％.Compared with adding no sodium carbonate additives,the acid leaching dissolution rate of muffle furnace activation increase by 73.21％.The characterization of XRD,SEM and FTIR indicate that the nepheline NaAlSiO4,which is soluble in acid,formed from the insoluble mullite,dense globular particles and other forms of the fly ash.It further demonstrates that the necessity of adding sodium carbonate,and the advantage of high temperature chemical activation process.Therefore,it can conclude that the addition of sodium carbonate during high temperature activation is an effective method to extract compounds in fly ash.关键词
粉煤灰/浸提/碳酸钠/活化/溶出率Key words
fly ash/leaching/sodium carbonate/activation/dissolution rate分类
资源环境引用本文复制引用
缪应菊,钱育林,杨兴敏,连明磊,李志..粉煤灰浸提活性激发实验研究[J].煤炭转化,2017,40(4):69-73,5.基金项目
贵州省教育厅特色重点实验室项目(2011-278)、贵州省普通高等学校煤系固体废弃物资源化技术创新团队项目([2014]46号)和贵州省教育厅自然科学研究项目([2013]201). （2011-278）
