| 摘要 |
<p>Apparatus for crushing relatively soft material such as coal, said apparatus comprising a container for material entering the apparatus and meant to be crushed, and within said container a conveyor, which feeds the material to be crushed in between crush rolls belonging to the apparatus. The conveyor consists of a screening roll set, through which the material conforming to the permissible grain size is screened, and that immediately after the crush rolls there is a screening means by which the crushed material is separated from uncrushed, undesirable objects such as stones and pieces of wood.</p> |
