A vibrating screen is a mechanical equipment used to separate materials by particle size, commonly employed in industries like mining, construção, agricultura, e reciclagem. It works by using vibration to sift and sort bulk materials into different grades or remove impurities.

Key Components of a Vibrating Screen:
1. Screen Box/Deck: The frame holding the screening surface (mesh or perforated plates).
2. Vibrating Mechanism: Generates vibrations (por exemplo, eixos excêntricos, unbalanced motors, or electromagnetic drives).
3. Screen Media (Mesh): Woven wire, polyurethane, or rubber panels with specific aperture sizes.
4. Springs/Dampers: Isolate vibrations and support the screen structure.
5. Sistema de acionamento: Electric motor with belts or direct drive for power transmission.

Types of Vibrating Screens:
1. Linear Vibrating Screen
- Moves in a straight line; ideal for dry or wet fine screening.
- Common in aggregate and mining industries.

2. Circular Vibrating Screen
- Uses a circular motion; suitable for medium to coarse materials.
- Often seen in quarrying and mineral processing.

3. High-Frequency Vibrating Screen
- Operates at high speeds (até 7,200 RPM) for fine particles (por exemplo, areia de sílica, minerais).

4. Banana Screen (Multi-Slope Screen)
- Features variable deck angles for higher capacity in wet screening applications.

5. Trommel Screen (Rotary Screen)
- A rotating cylindrical sieve used for composting, waste sorting, etc..

Aplicativos:
- Mineração & Pedreira: Sorting crushed stones, minérios, carvão.
- Aggregate Industry: Grading sand, cascalho.
- Reciclagem: Separating plastics, metais, materiais residuais.
- Agricultura: Grain cleaning and seed sizing.
- Químico & Processamento de Alimentos: Powder classification.

Vantagens:
✔ High efficiency in material separation.
✔ Adjustable vibration intensity & screen angles.
✔ Handles wet or dry materials.
✔ Low maintenance compared to static screens.

Desvantagens:
✖ Noise and dust generation may require mitigation.
✖ Wear of screen mesh over time (especially abrasive materials).

Selection Criteria:
- Material type (tamanho, teor de umidade).
- Required throughput capacity.