| 摘要 |
PCT No. PCT/AU89/00279 Sec. 371 Date Dec. 20, 1990 Sec. 102(e) Date Dec. 20, 1990 PCT Filed Jun. 28, 1989 PCT Pub. No. WO90/00090 PCT Pub. Date Jan. 11, 1990.A centrifugal jig of the type in which a feed slurry is introduced into a rotating chamber bounded radially by a screen provided with ragging on its inner surface. The ragging is repetitively dilated in a circumferential sequence while the container rotates. |
