| 摘要 |
The throughput in a jig can be increased by arranging on the jig bed a plurality of wash areas in which classification is performed simultaneously. A round jig is particularly simple and operationally reliable. Two chambers are preferably required per wash area, the more intensive and more rapid movements of the first chamber effecting a classification of the large grain and the weaker and slower movements in the second chamber effecting a fine-grain classification. To produce a defined wash water vibration in all wash areas, only one purely mechanical drive (20, 21) is required; a non-rotating tumbler whisk having vanes (22, 23), which, in offset phases, suck or press the wash water in the same manner in all chambers, is particularly suitable. Two concentric tumbler whisks (20, 21) allow wash water vibrations of different frequency. <IMAGE> |
