Triple-Pass Rotary Dryer
•Capacity: 3-100 t/h（Customizable）
•Heat Source:Electric,Biomass, Natural gas, Diesel, Coal, Etc.
•Applications: River sand, Quartz sand, Manufactured sand, Silica sand, Washed sand ,Sea sand ,Glass sand ,Frac sand,Aggregate,Ore, Industrial Salt ,Stone powder,Mineral & Mining material,Etc.
•Final moisture ≤0.5%(Adjustable)
•Service:15+ Years Sand Drying Equipment Manufacturer, CE & ISO Certified Factory With Free Energy-Saving Design,Global Service Technology Team,Turnkey Projects Solutions.
Triple-Pass Rotary Dryer Introduction
The sand dryer, also known as a Triple-pass rotary dryer or a three-return cylinder dryer, is an industrial dryer designed for non-viscous, liquid materials. It is a development and improvement based on the single-cylinder dryer. The three-cylinder dryer, manufactured by TongDing company, is currently available with mature technology. It effectively dries various materials such as sand, fly ash, coal, mineral materials, and slag, producing excellent drying results.
Three Drum Rotary Dryer Machine Layout Reference
Three Pass Sand Drying Machine Working Principle
1.The sand is transported to the silo either by a belt conveyor or a bucket elevator, and then transported to the feed end through the silo feeder. In order to facilitate the smooth flow of sand into the dryer, the inclination of the feeding pipeline should exceed the natural inclination of the materials. The rotating cylinder of the dryer is slightly inclined to the horizon, allowing for the material to be fed from the higher end while the heat carrier enters from the lower end, producing adverse contact between them. Sometimes, they can be fed into the cylinder together. As the cylinder rotates, the sand is carried to the lower side by gravity.
2.During the forward movement of the sand, the wet raw material is directly or indirectly roasted by the heat, allowing for rapid drying. The final product is discharged through either a belt conveyor or a screw conveyor. A shoveling plate is installed in the dryer to increase the contact area between the airflow and materials, enhance efficiency, and promote material flow.
3.The heat carrier used is typically hot air or flue gas, among others. Following the dryer process, a cyclone dust collector is necessary to capture items in the airflow. To further reduce the dust load of the exhaust, it is recommended to use either a bag-type or wet-type dust collector and then discharge the waste gas accordingly.
Sand Rotary Dryer Applicable Materials
Foundry sand, Quartz sand, Garnet sand, Emery, Kuala kangsar, Sand, River sand, Sea sand，Silica sand，
Slag，Stone powder，Iron powder，Plate sand ，Casting sand，Facturing sand ,Fly ash,and other materials.
Three Cylinder Rotary Dryer Parameter
We supply complete specifications of sand dryer machine for sale and sand dryer for sale. The small sand dryer machine suits small workshops and low-output projects with low investment. The heavy-duty Sand Rotary Dryer is ideal for large-scale production, including river sand dryer, frac sand dryer and sand and gravel dryer. Customized silica sand dryer, molding sand dryer, mineral sand dryer, tailings sand dryer and mineral slag dryer are available to meet unique material processing needs. All devices belong tohigh efficiency sand dryer series, saving energy and improving production efficiency greatly.
| Model | Power（KW） | Capacity(T/H) | Rotary speed （r/min） | Installation Angle | final Moisture | Heat Supply Mode |
| HG1625 | 4kw | 3-8 t/h | 9 | Aclinic | ≤0.5％ | 1) Firewood 2) Pulverized coal 3) Diesel 4) Natural gas 5) not carbonizedbiomass fuel 6) carbonizedbiomass fuel |
| HG2240 | 7.5kw | 10-15 t/h | 9 | |||
| HG2250 | 7.5kw | 20t/h | 9 | |||
| HG2958 | 5.5kw*4 | 30t/h | 7 | |||
| HG3270 | 11kw*4 | 60t/h | 7 | |||
| HG3890 | 15kw*4 | 100t/h | 7 |
Tongding Service And Support
As a direct sand dryer factory, we offer transparent sand dryer machine price without middlemen markup. Every industrial sand dryer and small model features durable structure, easy operation and low maintenance cost. Whether you need standard equipment or customized sand drying system, we provide one-stop solutions, reliable after-sales service and stable quality for global clients.
1.Provide customized solution design for global customers, according to raw materials, capacity, local climate and site layout.
2.Supply full set of sand drying equipment with standard export packaging, safe sea/land transportation and smooth customs clearance support.
3.Arrange professional engineers for overseas on-site installation, commissioning and operation training to ensure quick production.
4.Offer complete multilingual documents including English operation manuals, electrical drawings and video tutorials.
5.Support 24/7 remote technical support worldwide for fast troubleshooting and production guidance.
6.Supply original spare parts with global delivery service to reduce equipment downtime.
7.Provide long-term after-sales maintenance, regular follow-up and equipment upgrading services for global clients.
8.Serve customers all over the world with consistent high-quality service.
FAQ for Triple-Pass Rotary Dryer
Q1: What is a triple-pass rotary dryer?
A: It is a three-nested cylinder drying equipment. Materials pass through inner, middle and outer drum for sufficient heat exchange, high efficiency and small footprint.
Q2: What materials can a triple-pass rotary dryer dry?
A: River sand, silica sand, slag, fly ash, clay, coal slime, mineral. Widely used for dry mortar sand.
Q3: Moisture removal range?
A: Feed moisture 15–40%, final moisture adjustable to 0.5–5%.
Q4: Triple-pass vs single-pass rotary dryer?
A: Triple-pass has higher thermal efficiency, less floor space and lower fuel consumption.
Q5: Available capacity?
A: Standard 3–100 t/h, customized capacity supported.
Q6: Available fuel options?
A: Natural gas, diesel, coal, biomass and waste heat.
Q7: Can it match dry mortar production line?
A: Yes, it is a common supporting sand drying unit for dry mortar plants.
Q8: Do you provide customization?
A: Yes, customize moisture, burner, dust removal and layout.
Q9: Warranty and after-sales?
A: 24-month machine warranty, lifelong technical support, overseas commissioning available.
Q10: Lead time?
A: Standard: 20–30 working days; customized: 35–50 working days.
Q11: Do you have overseas project cases?
A: Yes, we running projects all over the world.
Inquiry
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