【摘要】 选用天然磷矿粉为原材料,通过硫酸酸化、有机无机活化剂活化分别制得酸化磷矿粉和活化磷矿粉。采用扫描电镜观察、X-射线衍射分析、激光粒度测试,证明了90%的酸化磷矿粉粒径为4.227μm,90%的活化磷矿粉粒径达到220 nm。活化磷矿粉结晶度降低,比表面积增大,有利于磷素在土壤中的释放与吸附。此种制备方法开辟了磷肥生产新工艺。更多还原

【Abstract】 The natural phosphorite powder was selected to prepare activated phosphorite powder and acidic phosphorite powder by a method of H2SO4 acidification and organic-inorganic agent activation,and several testing instruments including the scan electron-microscope(SEM),the X-ray diffraction(XRD) and the laser granularity,were used to determine the types of phosphorite powder.It was verified that the particle size of more than 90% of the acidic phosphorite powder was less than 4.227 μm,and more than 90% of activated phosphorite powder was less than 220 nm.Additionally,the crystallization of activated phosphorite powder declined,and the surface area increased.更多还原