文献类型：期刊文献

中文题名：微波快速活化粉煤灰提铝

英文题名：Aluminum extraction from coal fly ash ultra-fast activated by microwave

作者：张孜渊[1];乔秀臣[1];于建国[2]

机构：[1]华东理工大学资源与环境工程学院,上海200237;[2]华东理工大学化工学院,上海200237

年份：2014

卷号：9

期号：9

起止页码：981

中文期刊名：中国科技论文

外文期刊名：China Sciencepaper

收录：北大核心:【北大核心2011】；

基金：国家高技术研究发展计划(863计划)资助项目(2011AA06A102);高等学校博士学科点专项科研基金资助项目(20110074110002);国家自然科学基金资助项目(21176082)

语种：中文

中文关键词：粉煤灰;氧化铝;微波;烧结

外文关键词：coal fly ash;;alumina;;microwave;;sintering

摘要：利用微波辐照对粉煤灰-碳酸钙混合物料进行热活化,研究了微波入射功率及加热温度对活化产物氧化铝浸取率的影响。结果表明,微波功率为350W时,混合物料从室温升至800℃需64s,微波功率为500W时,从室温升至800℃仅需32s。经800℃加热60s后,粉煤灰中氧化铝提取率可达95%。微波辐照粉煤灰易形成大量液相,利于固相合成反应,从而得以低温快速活化粉煤灰。
Microwave irradiation was used to activate the mixture of coal fly ash(CFA)and calcite,and the influence of microwave input power and heating temperature on aluminum extraction from CFA was investigated in this research.The results show that the mixture of CFA and calcite is heated to 800℃in 64 sat a microwave input power of 350 W,however,it is only 32 sat 500W.95%(mass fraction)of aluminum can be extracted from the CFA treated at 800℃for 60 s.A large number of liquid phases are fomed in the CFA under microwave irradiation and it accelerates the solid-state synthesis process,which leads to ultra-fast thermal activation of CFA at lower temperature.