| 摘要 |
<p>A flotation machine comprises a deaerating chamber (5), a mixing chamber (1), a main nozzle (10) serving to feed the pulp-air mixture under the pressure to the lower part (3) of the mixing chamber (1), a chamber (4) for lifting the pulp-air mixture, the lower part of which is connected to the upper part (2) of the mixing chamber (1), whereas the upper part is connected to the deaerating chamber (5) mounted above the mixing chamber (1) and embracing the chamber (4) for lifting the pulp-air mixture shaped as a vertical channel of a constant cross-section area, the upper part of which is provided with a means for evenly distributing the pulp-air mixture within the foam-layer forming zone (6) of the deaerating chamber (5). The flotation machine is provided with an additional nozzle (11) mounted coaxially with the main nozzle (10) opposite the latter and serving as a means for obtaining a developed liquid-gas phase surface inside the pulp-air mixture. The machine is further provided with means (7) for removing the foam layer generated in the deaerating chamber (5) and with means (8) for discharging the residual product from the deaerating chamber (5).</p> |
