stationary cone classifier

例句：

1. 1. The stationary coneclassifier is used to separate the fineparticles from the coarse particles in the coal.
   固定锥形分选机用于从煤炭中分离细粒和粗粒。
2. 2. Thestationary cone classifier is an importantequipment for coal preparation.
   固定锥形分选机是煤炭准备过程中的重要设备。
3. 3. Thestationary cone classifier can effectively removeimpurities from coal and improve itsquality.
   固定锥形分选机能有效去除煤炭中的杂质，提高其质量。