The sleeve 18 includes an upper sleeve portion 18A and a lower sleeve portion 18B which are shaped so that they converge radially outwardly to an annular receptacle 28 lying at a particular radial plane of the bowl. The annular receptacle 28 thus includes an upper wall 28A connected to a bottom edge of the wall 18A together with a bottom wall 28B connected to a top edge of the wall 18B of the outer bowl. The wall 28A and 28B converge to an apex spaced outwardly of the walls 18A and 18B so that material within the outer bowl is centrifuged to follow the outwardly extending wall portions 18A and 18B into the annular receptacle for collection therein. The apex or junction between the walls 28A and 28B forms a ring surrounding the outer bowl indicated at 28C which is polygonal in plan view as shown by looking along the axis 13 in FIG. 3. At each apex of the polygonal shape is provided an outlet nozzle 29 from which the heavier materials collecting in the receptacle 28 can escape radially outwardly into the annular channel 26 forming a second launder. The annular channel 26 is separated from the channel 27 by an outer launder wall 26A which also forms an inner wall of the launder 27. The launder 26 also includes a base wall 26B which is inclined downwardly from the right hand side of the machine as shown in FIG. 1 to an outlet duct 26C providing an outlet from the machine for materials collected in the launder 26.
An inner wall of the launder 26 is indicated at 26D and a flange portion 26E carried by the bowl directs the materials from the nozzle 29 over the inner wall 26D into the launder for collection at the outlet 26C.
In operation feed materials are deposited into the bowl through the duct 24. The feed materials comprise mine tailings which include basic minerals from which gold and mercury are to be separated. The materials are supplied in a slurry form containing water which is discharged into the base of the bowl to pass over the peripheral wall of the bowl to the open mouth.
不要软件翻译的！谢谢了!
