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1. 物料容重:γ=0.2-1.8噸/立方米
Material bulk density: γ=0.2-1.8t/m3
2. 溫度: 物料溫度t＜100度c
Temperature: Material temperature t＜100oC
3. 含水率: 對于一般物料,，不得使物料用手捏成團后不易松散,，對于含水率認加后會加大粘著性和壓給性的物料，不能使物料嚴重粘附刮版,。
Water ratio: For common materials, they should not be easily loose after squeezed into cluster by hand. For the materials that the adhesivity and press-feedbility would increase after add water ration, they should not be adhere to scraper badly.
4.  粒度: 物料的粒度與其硬度有關(guān),，粒度太大. 則不宜輸送. 對物料粒度的要求見下表。
輸送物料的粒度(毫米)
   Granularity: The materials’ granularity is related to their rigidity, if the granularity is too high, it is not easy for transporting. The requirement of materials’ granularity is as follows: