| 摘要 |
<p>Aeration apparatus for use in recovering values from slurries in a flotation cell (10) wherein the impeller (20) has a plurality of generally radial downwardly extending blades on its lower surface, each blade extending from the hollow drive shaft (19) of the rotor to the periphery of the impeller and generally increasing in height radially outwardly along the length of the blade. In the preferred form of the invention a stator (21) is provided having corresponding radial blades located beneath the impeller (20).</p> |
