Wheel Sand Washer | Sand and Gravel Aggregate Washing
In sand and gravel aggregate production lines, the manufactured sand after crushing and screening often contains excessive dust, stone powder, and impurities. Wheel-type sand washing machines, as key washing and screening equipment, are a powerful tool for solving this problem and increasing product added value. As a seasoned manufacturer of mining crushing equipment, we deeply understand the importance of high-quality aggregates for construction quality. This article will delve into the core value of wheel-type sand washing machines.
I. Equipment Overview
The wheel-type sand washing machine, also known as a wheel bucket sand washer, is a device that uses impeller rotation to scrub, dewater, and classify sand and gravel. Its main working principle is: the motor drives the impeller to rotate slowly in the washing tank via a reducer. The material tumbles and grinds against each other under the impeller's drive, removing surface impurities and dust. Simultaneously, injected clean water carries away impurities and lighter foreign objects, discharging them from the overflow outlet, while the clean sand and gravel are gradually lifted, dewatered, and discharged under the impeller's drive.
Core Workflow
1. Feeding: Material containing impurities enters the washing tank.
2. Washing: The impeller rotation causes the material to tumble and rub against each other, while water washes it away.
3. Separation: Impurities and fine powder are discharged with the overflow, while clean sand and gravel remain.
4. Dewatering and Discharge: Clean sand and gravel are lifted and initially dewatered during the process, then discharged from the outlet.
Sand and Gravel Aggregate Washing
II. Core Advantages: Why Choose a Wheel Sand Washer?
Compared to other types such as spiral sand washers, wheel sand washers exhibit unique advantages in many aspects, making them a popular washing and screening equipment in the market.
1. High Washing Efficiency, Minimal Fine Sand Loss
The washing method combines flexible water flow and impeller agitation to thoroughly clean the mud and stone powder wrapped around the sand particles. The reasonable structural design effectively reduces the loss rate of fine sand and stone powder, ensuring reasonable gradation and improving the yield of finished sand.
2. Simple Structure and Reliable Operation
The equipment features a compact structure, with transmission components isolated from water and sand, significantly reducing the failure rate of key components such as bearings and gears. The equipment operates stably and reliably, with low maintenance costs.
3. Low Energy Consumption and High Processing Capacity
Compared to equipment with the same processing capacity, the wheel-type sand washer has a more economical power configuration and lower energy consumption per unit output, making it particularly suitable for medium and large-scale sand and gravel production lines for continuous and efficient sand and gravel washing operations.
4. Stable Finished Sand Quality
The mud and dust content of the washed sand and gravel aggregate can be effectively controlled within the standards for construction sand (such as the national standard GB/T 14684). The particle surfaces are clean, significantly improving the workability and final strength of concrete mixtures.
III. Application Case: Verification from Theory to Practice
We provided a 500-ton-per-hour high-quality manufactured sand production line for a large green building materials industrial park in East China, which included two of our company's XS series high-efficiency wheel-type sand washers.
• Customer Pain Point: The raw material is granite sand. Although the finished sand has excellent particle shape, the stone powder content is as high as 15%, far exceeding the standard, affecting the sales price and market competitiveness.
• Solution: Install a wheel sand washer after screening for deep cleaning and stone powder control.
• Results: After cleaning with the wheel sand washer, the powder content of the finished sand is stably controlled between 5% and 7%, meeting the standard of Class I sand. The sand particles have a smooth surface, increasing the market price by approximately 20 yuan per ton, and significantly shortening the return on investment period. Customer feedback indicates that the equipment operates stably and reliably with an extremely low failure rate.
IV. Equipment Matching Recommendations
A high-efficiency wheel sand washer needs to work in conjunction with the entire production line. We recommend:
• Front-end matching: High-efficiency fine crushing sand making machine (such as a vertical shaft impact crusher), circular vibrating screen. Ensure that the material entering the sand washer has a uniform particle size.
• Back-end matching: Fine sand recovery device or dewatering screen. It can be used in conjunction with a wheel sand washer to further recover lost fine sand, improving the overall recovery rate, or to perform deep dewatering of sand and gravel.
• Supporting Systems: A stable water supply system and a mud sedimentation tank or filter press to achieve water resource recycling and environmental protection requirements.
V. Frequently Asked Questions (FAQ)
Q1: Is the moisture content of the sand processed by the wheel sand washer high?
A1: The wheel sand washer has a certain dewatering function during the discharge process, but the finished sand is still considered "wet sand." If extremely high moisture content is required, it is recommended to connect a high-frequency dewatering screen in series after the sand washer to obtain "semi-dry sand" with a moisture content of less than 10%.
Q2: What are the core vulnerable parts of the equipment? What is the replacement cycle?
A2: The impeller liner (wear-resistant block) is the main vulnerable part. Its lifespan depends on the abrasiveness of the material being washed. Under high abrasive conditions, its service life can typically reach 3-6 months. Our equipment features a modular design, making replacement very easy.
Q3: Can it clean sand and gravel with a very high mud content?
A3: Yes, it can. However, for materials with extremely high mud content (e.g., exceeding 20%), we recommend adding a pretreatment step. For example, use a drum screen or trough-type stone washing machine for initial desliming, followed by a wheel-type sand washing machine for fine washing. This improves efficiency and prevents the mud in the washing tank from becoming too concentrated and affecting the washing effect.
About of Baichy Heavy Industry
Baichy Heavy Industry is a high-tech mining equipment company integrating R&D, manufacturing, sales, and after-sales service. Focusing on crushing, grinding, and mineral processing equipment, we provide professional solutions to our customers. We are ISO9001:2015 、certified, and our products include mobile crushing palnts, crawler crushing plant, construction waste crushing plants, jaw crushers, sand making machines, cone crushers, fine crushers, grinding mills, ball mills, etc., all with reliable performance to meet diverse project needs.
Our advantages:
• Professional pre-sales support: Free project design and comprehensive solutions to help you accurately select the right equipment;
• Comprehensive on-site service: Providing installation guidance and worker training to ensure smooth equipment commissioning;
• Reliable after-sales guarantee: A complete after-sales system, timely response to technical inquiries and equipment maintenance, ensuring long-term stable operation.
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