文献类型：期刊文献

中文题名：粉煤灰制备硅酸钙粉体及其性能表征

英文题名：Preparation and characterization of calcium silicate powder by fly ash

作者：张权笠 梁杰 蒲维 雷泽明

第一作者：张权笠

机构：[1]贵州大学材料与冶金学院;[2]贵州理工学院

第一机构：贵州大学材料与冶金学院,贵州贵阳550025

年份：2017

卷号：49

期号：6

起止页码：69-72

中文期刊名：无机盐工业

外文期刊名：Inorganic Chemicals Industry

收录：CSTPCD;;北大核心:【北大核心2014】；

基金：省部级--粉煤灰资源化利用新技术开发项目[黔教合KY字(2012)057号];省部级--贵州省煤基新材料工程研究中心项目[黔教合KY字(2012)026号]

语种：中文

中文关键词：粉煤灰;硅铝浸出;硅酸钙;氧化钙

外文关键词：fly ash;silicon and aluminum eaching;calcium silicate;CaO

摘要：研究了采用加碱浸出—混合氧化钙的方法从粉煤灰中制备硅酸钙粉体。考察了浸出温度、浸出时间、碱液浓度、液固比对硅铝浸出率的影响,实验结果表明在浸出温度为90℃、浸出时间为5 h、碱液质量分数为40%、液固质量比为10的条件下硅铝的浸出效果最佳。同时考察了制备硅酸钙的影响因素,实验结果表明在反应温度为90℃、反应时间为2.5 h、搅拌转速为30 r/s条件下可制得较纯的硅酸钙制品。对制备的硅酸钙粉体进行了表征。
Calcium silicate powder was prepared from fly ash by the method of adding alkali leaching and mixed CaO.The effects oftemperature, leaching time,alkali concentration,and liquid-solid ratio on the leaching rates of aluminum and silicon were investigated.Experimental results showed that the best conditions for leaching of silicon and aluminum were as follows： the leaching temperature was 90 益,the leaching time was 5 h,the alkali mass fraction was 40%,and the liquid-solid ratio was 10. The influencing factors ofthe preparation ofcalcium silicate were also investigated.Experimental results showed that： When the reaction temperature was 90 益,the reacting time was 2.5 h,and the stirring speed was 30 r/ s,the pure calcium silicate products could be obtained. Finally,the prepared calcium silicate powderwere characterized.