The Preparation of Silica White from Fly Ash and Its Characterization

摘要：

The silica white was prepared using fly ash as raw material. It comprised alkaline fusion of fly ash followed by extraction with hydrochloric acid. The acid concentrations, reaction time, S/L ratio and stirring rate on silica extraction efficiency were investigated. The prepared silica white was also characterized by XRD and N2 adsorption-desorption. The results showed that, the extracting rate displayed an increasing trend with the increase of acid concentrations, reaction time and stirring rates. The specific surface area and average pore size of the prepared silica white were 364.8m2/g and 6.02nm, respectively.

作者: Zhi-tong YAO Jin-hui LI Mei-sheng XIA Ying YE

作者单位: Department of Environmental Science and Engineering, Tsinghua University, Beijing, China Department Department of Environmental Science and Engineering, Tsinghua University, Beijing, China Department of Ocean Science and Engineering, Zhejiang University, Hangzhou, China

会议类型: 国际会议

会议名称: The Fifth International Conference on Waste Management and Technology(第五届固体废物管理与技术国际会议)

会议地点: 北京

会议语种:英文

页码: 638-641

在线出版日期: 2010-11-01（万方平台首次上网日期，不代表论文的发表时间）