| 摘要 |
<p>A nozzle ring assembly for use around a circular grinding path of a roller mill of the kind comprising a grinding table which is rotatable about a vertical axis, and grinding rollers urged against the grinding table. The nozzle ring asssembly comprises a nozzle ring with circumferentially spaced guide vanes for directing air, in use, over the grinding path in a direction with a component substantially tangential to the grinding path. The nozzle ring also has a set of annular guide vanes which are disposed one above the other for directing air, in use, substantially horizontally over the grinding path.</p> |
