| 摘要 |
<p>While standard tube mills are divided into two separate chambers for primary grinding and for fine grinding respectively, the invention provides two separate mills, one for crushing (26), the other (28) with a larger diameter for fine grinding, with an intermediate screening station (36) between the two mills (26, 28). As a result of said intermediate screening and the difference in diameter in the second mill, the two mills (26, 28) can operate in optimal filling conditions for the material to be ground.</p> |
