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Position: Home > Articles > Preparation and testing of two kinds of modified phosphorite powder Journal of Plant Nutrition and Fertilizers 2008,14 (4) 792-796

两种改性磷矿粉的制备与表征

作  者:
冯兆滨;刘秀梅;刘光荣;邹绍文;张树清
单  位:
山东农业大学资源与环境学院;江西省农业厅土肥站;中国农业科学院土壤肥料研究所;江西省农业科学院土壤肥料研究所;江西省土壤肥料技术推广站
关键词:
活化;磷矿粉;制备;表征
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。
译  名:
Preparation and testing of two kinds of modified phosphorite powder
作  者:
FENG Zhao-bin1,LIU Xiu-mei1,LIU Guang-rong1,ZOU Shao-wen1,ZHANG Shu-qing2,ZHANG Jian-feng2,WANG Yu-jun2,ZHANG Fu-dao2(1 Soil and Fertilizer Institute,Jiangxi Academy of Agricultural Sciences,Nanchang 330200,China;2 Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Science,Beijing 100081,China)
关键词:
activation;phosphorite powder;preparation;testing
摘  要:
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.

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