Abstract: The invention relates to a suction-effect radial-discharge funnel-shaped nozzle. It comprises, in series, an injector (2) to supply a fluid and a spreading cone (1), whose tip resides in front of a discharge mouth of said injector, as well as a funnel-shaped housing (3) encasing them. According to the invention, the discharge annulus of the nozzle is reduced along the mantle surface of the cone starting from the tip thereof, with a constant annular flow area being maintained along the flow.

Abstract: In a flotation plant comprising an intake installation (1), a flocculation section (2), a separating section (4), a water discharge installation (5), a sedimentation section, a slurry collecting section (7), a scraper (8) for the slurry, a trough (9) for the slurry, and pushers (10) for conveying the same, a laminating section (3) is incorporated between the flocculation section (2) and the slurry collecting section (7). The laminating section (3) is composed of a plurality of equiaxial divergent circular-section members arranged to form, on the one hand, mutually equal base areas and, on the other hand, mutually equal exit areas of the respective annuli. Both the flocculating section (2) and the laminating section (3) are positioned centrally inside a cistern (4, 6) of the flotation plant.