机械共活化对磷钾矿晶体结构及其活性的影响

Effect of Mechanical Coactivation on Crystal Structure and Activity of Phosphorite and Potassium Ore

本文研究了采用雷蒙磨共活化磷钾矿的工艺。X射线衍射结果表明,随着机械活化次数和转速的增加,氟磷灰石Ca_5(PO_4)_3F和硅酸铝钾(KAl Si_3O_8)的特征峰衍射强度明显降低;粒径在高转速下减小明显,当减小到一定值后,不随着转速和活化次数的增加而继续减小;当转速为1000 r/min,活化第8次时,有效磷浸出率达最大值;转速为1400 r/min,活化第10次时,水溶性钾浸出率达最大值。

The Raymond mill activation techniques of phosphorite ore with potassium ore were studied in this paper. The X-ray diffraction results showed that with the increasing of activated times and rotating speed , the intensities of characteristic diffraction peaks of fluorapatite（Ca5 （PO4）3F） and potassium aluminosilicate （KA1Si308 ） decreased significantly; the particle sizes decreased obviously at high rotational speeds, while they didn ＂t decrease continuously with the increasing of rotating speeds and activation times after they reached a certain level. The leaching rate of available phosphorus could reach maximum with the rotating speed at 1000 r/min and the activation for 8 times. The leaching rate of water soluble potassium could reach maximum with the rotating speed at 1400 r/min and the activation for 10 times.