The sand washing, dewatering, and fine sand recovery integrated machine is an advanced equipment that integrates sand washing, dewatering, and fine sand recovery functions. Its operating principle mainly includes the following four steps:
1. Cleaning and Separation
After entering the sand washing, dewatering and fine sand recovery integrated machine, the sand and gravel raw materials will first be fully mixed with water under the action of the wheel bucket or spiral sand washing device. During this process, impurities such as soil and dust will be washed away by water, thus achieving the cleaning and separation of sand and impurities. This step is the foundation for subsequent processing, ensuring the cleanliness of the sand and gravel raw materials.
2. Dehydration
After cleaning, the sand and gravel will enter the dewatering screen for high-frequency vibration dewatering. The aperture design on the dewatering screen is exquisite, which can effectively prevent sand and gravel from passing through, while allowing moisture and small impurities to be discharged through the sieve. This step further removes moisture from the sand and gravel, improves the dryness of the sand and gravel, and provides convenience for subsequent processing.
3. Fine sand recycling
During the cleaning and dehydration process, some fine sand may be lost with the wastewater. In order to recover these fine sands, the sand washing and dewatering fine sand recovery integrated machine adopts a cyclone for fine sand recovery. The mixture of wastewater and fine sand is transported to the cyclone by a slurry pump, and fine sand is separated from the wastewater by centrifugal force. The separated fine sand will be returned to the dewatering screen for further dewatering treatment, while the wastewater will be discharged or recycled.
4. Dehydrate again
The fine sand returned to the dewatering screen will be dehydrated again together with the previously dehydrated sand and gravel. This step ensures that the moisture content of the fine sand meets the requirements, further improving the dryness and quality of the sand and gravel. After this step of processing, the sand and gravel can be stacked or transported as finished products.
The sand washing, dewatering, and fine sand recovery integrated machine achieves efficient cleaning, dewatering, and fine sand recovery of sand and gravel through the organic combination of these four steps. This device not only improves the quality and recovery rate of sand and gravel, but also reduces its impact on the environment. It has the advantages of high efficiency, energy saving, high fine sand recovery rate, water purification, and easy operation.