Patent ID: 6773586
Filing Date: 2004-08-10
Classification: B03D,C02F

Abstract:
Flotation device for separating materials or mixtures of materials from suspensions to form at least one high material content fraction and one low material content fraction, with several rotationally symmetrical plates arranged one above another in a flotation tank, wherein during the separating procedure, the low material content fraction enters into plate spaces between the plates and arrives at a clarified fluid collecting tube, wherein horizontally outside the plates, a vertically extending annular separating space is formed that communicates with a run-off for the high material content provided above the plates, characterised bya reaction and mixing space (18) with eccentric inlet (16) for mixing the suspension particles with gas bubbles and for further conveyance into at least one centrally arranged vertical suspension distribution tube (26); wherein the suspension distribution tube (26) and the clarified fluid collecting tube (48) are arranged adjacently; the plates (30) surround the suspension distribution tube (26) and the clarified fluid collecting tube (48) in an annular manner; every second annular plate space (31) between adjacent plates (30) is connected to the suspension distribution tube (26) and every other space between plates (31) is connected to the clarified fluid collecting tube (48), so the flow takes place from one space between plates (31) from the inside to the outside towards the separating space (32) and subsequently into an adjacent space between plates (31) from the outside to the inside.