This paper studies particle size of both the same and different materials which were milled, graded and processed under different conditions, in AFG-100 gas stream mill made in Germany.
在德国产流化床式AF G - 100气流磨内，对同一物料在不同分级轮转速条件下及不同物料在同一分级轮转速情况下，粉碎分级出的颗粒大小进行分析研究。
Testing results show that phosphogypsum material particle size distribution is more concentrated, graded poor, good permeability and high shear strength.
试验结果表明：磷石膏颗粒分布较为集中、级配较差、渗透性能良好且抗剪强度较高。
The river deposit, which is made up of naturally graded sand and gravel, is characterized by its well gradation, easy control of its particle size, easy compaction and good permeability.
这种天然级配砂砾具有级配良好、粒径易控制、易碾压成型、透水性好等特点。
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