Preparation of a-Alumina from Coal Fly Ash by Sintering with Sulfuric Acid

摘要：

A technology was studied to prepare a-alumina from fly ash,and the integrated process flow including sintering with sulfuric acid,leaching,recrystallization,calcination was established in this paper.The influences including the particle size of fly ash,sintering temperature,sintering time and the mass ratio of sulfuric acid to fly ash on the extraction ratio of alumina were investigated and discussed during sintering process,and the optimal parameters were determined.The product of α-alumina was examined by chemical analysis,XRD and SEM,and the results show that α-alumina reach the national standards.

关键词： Coal fly ash α-alumina Sintering Sulfuric acid

作者: Wenning Mu Yuchun Zhai

作者单位: Department of Materials Science and Engineering,Northeastern University at QinHuangdao Branch,Qinhua Department of Metallurgical Physical Chemistry,Northeastern University,Shenyang 110004,PR China

会议类型: 国际会议

会议名称: 2010 International Conference of Environment Materials and Environment Management(2010年环境材料与环境管理国际学术会议 EMEM 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 2039-2044

在线出版日期: 2010-07-24（万方平台首次上网日期，不代表论文的发表时间）