High-frequency vibrating screens for screening machinery are primarily utilized in the mineral processing industry. They are used to separate feeds containing solid and crushed ores down to less than 200 μm in size and are applicable to both perfectly wetted and dried feed. The frequency of the screen is mainly controlled by an electromagnetic vibrator which is mounted above and directly connected to the screen surface and can be adjustable.
High-frequency vibrating screens usually operate at an inclined angle and can go up to a maximum of 45°. They should operate with a low stroke and have a frequency of 5,000 to 6,000 RPM. Pre-treatment of the feed is often required before the use of the high frequency screen, as the apertures in the screen may become easily blocked.
| Item | Diameter of Screen Surface (mm) |
Layer | Mesh Size |
|---|---|---|---|
| HF-1 | 560 | 1–5 | 2–500 |
| HF-2 | 760 | 1–5 | 2–500 |
| HF-3 | 930 | 1–5 | 2–500 |
| HF-4 | 1,130 | 1–5 | 2–500 |
| HF-5 | 1,430 | 1–5 | 2–500 |
| HF-6 | 1,730 | 1–5 | 2–500 |
| HF-7 | 1,930 | 1–5 | 2–500 |
