Sand Drying Machine | Triple-pass Dryer
Baichy's three-pass sand dryer is specifically designed for the production of river sand, quartz sand, and dry mortar. Through its nested three-layer drum structure (inner, middle, and outer layers), its thermal efficiency is increased by 50%-80% compared to single-drum dryers, and the output moisture content can be stably controlled below 0.5%, while occupying only one-third of the space of traditional equipment.
I. Three-Pass Structure: Maximizing Heat Energy
In the industrial drying field, heat loss is the biggest cost killer. Baichy's three-pass structure solves this problem through optimized physical paths:
• High-Temperature Exchange in the Inner Drum: The material undergoes high-intensity heat exchange with the high-temperature airflow in the inner drum, fully absorbing primary heat energy.
• Recycling of Waste Heat in the Middle Drum: The material folds back into the middle drum, utilizing the waste heat dissipated from the inner drum for secondary drying, achieving heat self-circulation.
• Low-Temperature Dehumidification in the Outer Drum: The material completes final drying in the outermost drum, at which point the drum surface temperature has dropped to near room temperature, greatly reducing external heat loss.
II. Core Advantages: Anti-cliché Technical Specifications
• Output Moisture < 0.5%: Meets stringent export standards for high-grade dry mortar and quartz sand.
• Multi-fuel Adaptability: Intelligent combustion system allows for seamless switching between natural gas, biomass, coal, diesel, and other heat sources, flexibly responding to energy price fluctuations.
• Stainless Steel Sealing System: Utilizes manganese steel wear-resistant lifting plates and combined sealing components to completely eliminate air and ash leaks, extending maintenance cycles by 40%.
• Compact Design: For renovations of older plants, the three-pass structure eliminates expensive civil engineering costs.
Sand Drying Machine | Triple-pass Dryer
III. ROI Analysis: Every Grain of Sand Saves You Money
Taking a 30-ton-per-hour drying line as an example, compared to a single-drum dryer:
• Coal/Gas Consumption: Reduced by 30%–40%, saving approximately 15,000–35,000 RMB in fuel costs annually.
• Electricity Consumption: Due to high thermal efficiency, drum operating time is shortened, reducing the power consumption of the matching fan by 20%. • Maintenance Costs: The high-wear-resistant alloy lifting plate design extends the lifespan of vulnerable parts from 8 months to 14 months.
IV. Technical Specifications (Standard Specs)
| Parameter Name | Technical Specifications | Remarks |
| Equipment Type | Triple-Pass Dryer | Patented Embedded Structure |
| Processing Capacity | 1 - 75 t/h | Custom Expansion Available |
| Feed Size | < 10 mm | Recommended 0.5-5 mm |
| Discharge Moisture | ≤ 0.5% | Adjustable Based on Material Characteristics |
| Heat Source | Gas/Biomass/Coal/Waste Heat | Fully Compatible Combustion Engine |
| Cylinder Drive | Friction Drive/Gear Drive | Smooth Operation, Noise <80dB |
Process flow diagram of a three-cylinder dryer
Frequently Asked Questions (FAQ)
Q: Why is a three-pass dryer more suitable for drying river sand?
A: River sand has a uniform particle size but high flowability. The intelligent lifting plates with a three-pass structure form a uniform "material curtain" of sand, increasing the contact area with hot air and avoiding the "central wind tunnel" phenomenon common in single-drum dryers, ensuring that every grain of sand meets drying standards.
Q: How does Baichy Heavy Industry solve the adhesion problem during the drying process?
A: For sand with high mud content, we have equipped the inner drum with a high-strength vibration device and an intelligent cleaning chain. Combined with the staggered lifting plates, even wet sand with high moisture content can be quickly separated, preventing clumping and ensuring continuous operation.
Q: Can this equipment be installed directly outdoors?
A: Yes. The outer layer of the drum is treated with thermal insulation cotton and a stainless steel protective layer, which not only improves thermal efficiency but also provides excellent corrosion resistance and weather resistance.
