| 摘要 |
<p>The notation container has no stirring device and has a froth discharge device and a substantially horizontal flow of the suspension material. All the suspension material (2) is distributed at the inlet end of the container width and is entered therein along or through a transverse wall. The container is characterized by the fact that close to the transverse wall air (13) is also supplied substantially on the whole width and the froth is discharged exclusively at the outlet end of the container. Furthermore, the distance between the transverse walls which delimit the container length is such that the total path of the current is much longer than the average height of the liquid level in the container. The acceleration of the suspension material current, due to a stream contraction a little before the froth discharged channel (4) facilitates the discharge of the froth. The froth discharged channel (4) is arranged transversaly to the suspension current direction and extends at least along the length of the container at the vicinity of the stream contraction section. The flotation unit operates with reduced power and an improved efficiency. </p> |
