用硅藻土制备高纯活性硅微粉工艺研究

THE STUDY OF PREPARING FINE PURE ACTIVE SILICA POWDER FROM DIATOMITE

对含粘土硅藻土和优质硅藻土进行了提纯研究。以含粘土硅藻土为原料，通过物理提纯（包括擦洗、磨矿、沉降分离）可制得精土；精土、优质硅藻土酸洗可获得含ＳｉＯ２＞９４％的高纯活性硅微粉。

The purification of clay-bearing diatomite and high grade ores is investigated in this article.Through physical purification including scrubbing,grinding,settling and separation,concentrated diatomite can be obtanined from clay-bearing diatomite.Fine high pure and active silica powder(SiO2>94%) can be produced from diatomite concentrates and high grade ores by acid leaching.