| 11. | One of the main process characteristics of interest is the screening rate of the trommel.
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| 12. | The remaining materials, after simple physical separation ( trommel screen ) has several valuable uses.
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| 13. | Trommel screens are more mechanically robust than vibrating screens allowing it to last longer under mechanical stress.
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| 14. | However more material can be screened at once for a vibrating screen compared to a trommel screen.
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| 15. | Apart from screening rate, another characteristic of interest is the separation efficiency of the trommel screen.
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| 16. | Gold was recovered in a rotating long trommel screen with diameter and 12.5 % grade.
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| 17. | Other applications of trommel screens can be seen in the screening process of composts as an enhancement technique.
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| 18. | Besides this, the food industries use trommel screens to sort dry food of different sizes and shapes.
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| 19. | Viscous and sticky materials are easier to be separated using a roller screen than with a trommel screen.
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| 20. | Vermeer also purchased Wildcat Manufacturing in Freeman, South Dakota, a manufacturer of trommel screens and compost turners.
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