| 摘要 |
PCT No. PCT/NL91/00095 Sec. 371 Date Feb. 16, 1993 Sec. 102(e) Date Feb. 16, 1993 PCT Filed Jun. 11, 1991 PCT Pub. No. WO91/19572 PCT Pub. Date Dec. 26, 1991.A flotation cyclone for flotation of small particles of less than 30 mu m, comprising a cylinder (1) with an upper section, having a porous wall (4) and an extension (6) having a solid wall, said upper section being provided with a tangential inlet (2) and being covered with a lid, having a vortexfinder (10) as a foam outlet, and being surrounded by a gas chamber (3) having a gas inlet (3'), surrounding said porous wall (4), and being provided at the lower end of said porous wall (4) with a weir (5), while the extension (6) of said cylinder, having a solid wall, is provided at its lower end with a liquid as a blocking device. |
