sand dryer drum
The Best Choices for Your Project
- Customization Service：The maximum customizable diameter is 3.5 meters
- Solution：Provide solutions for your problems
- Dryer length: 8 meters to 50 meters.
sand dryer drum
A Sand Dryer Drum, also known as a sand drying machine or rotary drum dryer, is an industrial machine designed to reduce the moisture content of sand to a desired level. Wet sand, typically from dredging, mining, or washing processes, is fed into a large, rotating drum where it is heated and dried. This process is crucial in various industries, including construction (for producing dry mortar and concrete sand), foundry (for silica sand), and glass manufacturing, where controlled moisture is essential for product quality and handling efficiency.
The working principle of a sand dryer drum is based on direct or indirect heat transfer in a rotating cylinder. Here’s a step-by-step breakdown:
Feeding: Wet sand is fed into the upper end of the inclined rotating drum via a conveyor belt or feeder.
Lifting & Showering: As the drum rotates, internal lifting flights (fins) pick up the sand and shower it down in a curtain-like manner across the entire cross-section of the drum.
Heat Transfer: A hot gas stream, generated by a burner, flows through the drum. The showering action of the sand maximizes its surface area exposure to the hot gases, enabling highly efficient and rapid evaporation of moisture.
Drying & Transportation: The combined action of gravity (due to the drum’s incline) and the hot gas flow moves the sand from the feed end to the discharge end. During this journey, moisture is continuously removed.
Discharge: The dried sand, now with the required low moisture content, exits the drum at the lower end and is collected for storage or further processing. Exhaust gases, containing the evaporated moisture, are treated in a dust collection system (like a bag filter or cyclone) before being released into the atmosphere.
Sand dryers are not one-size-fits-all. They are customized based on capacity, initial moisture, and final moisture requirements. The table below outlines common parameters and example models.
| Model | Drum Diameter (m) | Drum Length (m) | Capacity (TPH)* | Initial Moisture (%) | Final Moisture (%) | Power (kW) |
|---|---|---|---|---|---|---|
| SD-0812 | 0.8 | 12 | 2-5 | 10-15% | <0.5% | 15-20 |
| SD-1015 | 1.0 | 15 | 5-10 | 10-15% | <0.5% | 22-30 |
| SD-1218 | 1.2 | 18 | 10-15 | 10-15% | <0.5% | 30-37 |
| SD-1520 | 1.5 | 20 | 15-25 | 10-15% | <0.5% | 45-55 |
| SD-1822 | 1.8 | 22 | 25-35 | 10-15% | <0.5% | 55-75 |
| SD-2124 | 2.1 | 24 | 35-50 | 10-15% | <0.5% | 75-90 |
Available Heat Sources and Energy Consumption Comparison
Sand dryer drums are versatile and can be powered by various heat sources, allowing you to choose the most economical and available option for your location.
| Heat Source | Advantages | Disadvantages | Relative Energy Cost | Efficiency |
|---|---|---|---|---|
| Natural Gas / LPG | Clean combustion, easy to control, widely available. | Requires gas pipeline or storage. | Medium | High |
| Diesel / Fuel Oil | High heat value, portable. | Higher cost, produces more emissions. | High | High |
| Coal | Very low fuel cost. | High emissions, requires handling and storage of solid fuel, ash disposal. | Low | Medium |
| Biomass | Renewable, carbon-neutral, low cost. | Inconsistent fuel quality, requires specialized burner, ash disposal. | Very Low | Medium |
| Electricity | Very clean, 100% efficient at point of use. | Extremely high operational cost. | Very High | High (for heater |
Key Takeaway: While natural gas offers a good balance of cost and efficiency, coal and biomass are the most cost-effective for high-volume operations, provided environmental regulations and handling logistics are managed.
Key Features of Sand Dryer Drum
High Thermal Efficiency: The lifting flight design ensures optimal heat exchange between sand and hot gases.
Robust Construction: Built with high-quality steel and wear-resistant liners to withstand abrasive sand.
Uniform Drying: The rotating and showering action guarantees even drying, preventing over-drying or under-drying.
Low Maintenance: Simple and durable design with easy access to components for servicing.
Intelligent Control: Modern dryers come with PLC systems to automatically control temperature, feed rate, and rotation speed for consistent output.
Environmentally Friendly: Equipped with efficient dust collection systems to meet emission standards.
Customized Sand Dryer Drum Solutions
We understand that every client’s needs are unique. Yes, we can fully customize the sand dryer drum according to your specific requirements. Our engineering team can tailor the following aspects:
Capacity and Size: Design a drum with the exact diameter and length to meet your production targets (TPH).
Moisture Requirements: Optimize the drum and burner system for your specific initial and final moisture content.
Heat Source: Configure the dryer to work efficiently with your preferred fuel (gas, oil, coal, biomass, etc.).
Special Materials: Use special wear-resistant steels or coatings for highly abrasive sands to extend service life.
Automation Level: From basic manual control to fully automated PLC systems with remote monitoring.
Space Constraints: Design a compact layout to fit your existing plant footprint.
Contact us today to discuss your project. Let our experts provide you with a tailor-made sand drying solution that maximizes your productivity and return on investment.