- Minimize product moisture content
- Recover and dewater feed solids
- Efficient wet sizing followed by dewatering
- Can be equipped with Derrick polyurethane screens
To minimize product moisture content, select the Derrick Vacu-Deck dewatering screen. The Vacu-Deck screen incorporates a low horsepower blower that develops a slight vacuum and draws air through the bed of solids on the last screen section. Machines can be configured in two ways. To recover and dewater the maximum amount of the feed solids, the screen is fed with a thickened slurry produced by a sand separator or equivalent. Alternatively, for efficient wet sizing followed by dewatering of the oversize, the screen is fed with a more dilute water-solids mixture. Particle sizing is accomplished on the upper screen sections followed by dewatering of the oversize on the vacuum section. With both configurations, capacity and wear life can be maximized by using Derrick’s polyurethane screen surfaces.