| 摘要 |
The separation of fibres from a fibre-containing water is performed by means of continuous flotation, in an apparatus (10) comprising a mantle (15) of circular cross section and means (12) for causing said fibre-containing water to rotate in a vortex on the inner surface of said mantle (15). Finely distributed gas is fed through a gas permeable part (18) of said mantle (15) into said vortical water. A foam column is generated in the center of said mantle (15) and is discharged through a discharge pipe (13). Said discharging pipe (13) is preferably connected to a foam extinguishing apparatus (30). The process and apparatus are preferably used for the recovery of fibres from backwater in a papermachine. |
