粉煤灰制备硅酸钙粉体及其性能表征

发布时间：2018-04-30 17:49

  本文选题：粉煤灰 + 硅铝浸出　； 参考：《无机盐工业》2017年06期

【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。
[Abstract]:The preparation of calcium silicate powder from fly ash by alkali leaching and mixed calcium oxide was studied. The effects of leaching temperature, leaching time, alkali concentration and liquid-solid ratio on the leaching rate of Si-Al were investigated. The experimental results showed that the leaching temperature was 90 鈩，

本文编号：1825562