| 摘要 |
<p>A froth flotation device (1) which includes a tank (2) to contain a slurry (3) incorporating minerals which are to be extracted, a zone (11) of mineralised froth above the slurry and a launder (15) directing the mineralised froth away from the tank, includes a porous diffusion surface (16) in direct contact with the froth to dispense wash water directly into the froth zone. The porous diffusion surface (16) comprises a flexible, perforated, rubber membrane, water being supplied from behind the membrane by a conduit (25) in inclined guide surface (16). <IMAGE></p> |
