A Screw Sand Washing Machine is a type of equipment used to wash, classify, and dewater sand and other granular materials in industries like mining, construção, e extração. It utilizes a screw mechanism to lift and clean the material while removing impurities.

Principais recursos & Princípio de funcionamento:
1. Estrutura:
- Consists of a rotating screw (auger) inside a trough or tub.
- Water inlet for washing and an overflow weir for removing impurities.

2. Working Process:
- The screw rotates, lifting sand from the bottom of the tank.
- As the sand moves upward, it is washed by water jets or immersion.
- Impurities (argila, pó, matéria orgânica) are flushed out through the overflow weir.
- Clean sand is discharged at the top after dewatering.

3. Vantagens:
- Efficient cleaning & high recovery rate (95%+).
- Low water consumption compared to bucket-wheel washers.
- Simple structure with minimal maintenance needs.
- Handles fine and coarse sand effectively.

4. Aplicativos:
- Washing natural sand or crushed sand for construction (concreto, mortar).
- R

ving silt/clay from aggregates in quarries.
- Processamento mineral (por exemplo, minério de ferro, areia de sílica).

Types of Screw Sand Washers:
- Single Screw Washer: One spiral for small-scale operations.
- Double Screw Washer: Two parallel screws for higher capacity.

Comparison with Other Sand Washers:
| Recurso | Screw Washer | Bucket Wheel Washer | Log Washer |
||-|||
| Uso de água | Baixo | Alto | Moderado |
| Fines Loss | Mínimo | Mais alto | Moderado |
| Capacidade | Medium | Alto | Alto |
| Manutenção | Baixo | Moderado | Alto |

Considerações sobre seleção:
- Tipo de material (tamanho, teor de argila).
- Required Output (toneladas/hora).
- Water Availability & Recycling System.

Would you like details on installation, manutenção, or specific models?