Sand Dryer for sale

What is Sand Dryer ?

Sand dryers can be classified based on two main factors: volume and the materials to be dried.

Sand dryer is a drying equipment for dehydrating granular materials, especially suitable for artificial sand, river sand, quartz/silica sand, etc. The dryer has the advantages of high production capacity, wide range of application, small flow resistance, large operation fluctuation range, and convenient operation. Sand dryers are also commonly used to dry mineral powder, cinder, slag, etc. The sand dryer is suitable for a variety of fuels, such as coal, oil, and gas.

Classification of sand dryers

According to the body integration, sand dryers can be divided into large sand dryers and small sand dryers; According to the materials to be dried, it can be divided into silica sand dryer, quartz sand dryer, river sand dryer, yellow sand dryer, zircon sand dryer, garnet sand dryer, etc.

Why Should We Dry the Aggregate and Sand?

Controlling moisture is controlling your business. The return on investment from drying your materials is clear and measurable.

First, you meet demanding product specifications. High-performance materials like hot mix asphalt and specialty concrete have strict moisture limits. Wet aggregate prevents proper bonding with asphalt and ruins the critical water-to-cement ratio in concrete. A quality rotary sand dryer ensures your product meets spec every time.

Second, you enable year-round operation. In many regions, winter means frozen clumps of aggregate that can shut down an entire plant. A reliable construction sand dryer provides a steady stream of workable material, allowing you to generate revenue when competitors are idle.

Third, you slash transportation costs. Why pay to ship water? Drying aggregate can reduce its total weight by 5% to 15%. If you ship thousands of tons, the savings on fuel and freight are enormous. This cost reduction goes directly to your bottom line.

What are Dried Aggregate and Sand Used For?

Dried aggregates are the foundation of modern construction. The final application is critical because it determines the entire drying process.

• Hot Mix Asphalt: This is the most common use. You need a sand dryer for an asphalt plant that can heat aggregate to 150-180°C (300-350°F) with virtually zero moisture (<0.5%). The dryer is heating the material, not just drying it.
• Ready-Mix Concrete: The goal here is different. You only need to remove excess surface moisture to get a consistent product, especially for winter work. The aggregate does not need to be hot; in fact, hot sand can make concrete set too fast.
• Mortar and Grout Mixes: Bagged products require perfectly dry, free-flowing sand to ensure a long shelf life and proper performance.
• Glass Manufacturing: This requires high-purity silica sand with extremely low moisture. The drying process must be gentle to avoid fracturing the sand grains.

What is the Whole Process of Drying Aggregate and Sand?

A drying plant is a complete system, not just a single machine.

1. Feeding: Wet material is loaded into a feed bin. A conveyor then moves it to the dryer. A consistent, steady feed rate is the first step to an efficient process.
2. Drying: The material enters the rotating drum of the industrial sand dryer. Inside, it is tumbled through a powerful stream of hot gas from a burner.
3. Discharge: The hot, dry material exits the dryer. It is then moved by a heat-resistant conveyor to a cooling area or storage silo.
4. Exhaust and Dust Control: A large fan pulls the hot, moist gas and fine dust from the dryer. This exhaust goes to a dust collection system (like a cyclone or baghouse) to clean the air before it is released.

What are Key Difficulties When Drying Aggregate and Sand?

Drying rock and sand is a tough, abrasive process. Understanding the challenges is the first step to building a reliable plant.

The biggest challenge is managing heat transfer efficiency. You need to get the heat from the burner into the material, not send it up the exhaust stack. This is controlled by the design of the internal “flights” or lifters that cascade the material through the hot gas.

Another major difficulty is abrasion. Sand and stone will wear through standard steel in a surprisingly short amount of time. The feed and discharge chutes are especially vulnerable.

Finally, you must manage dust. The drying process creates fine dust that must be captured. The dust collection system is often a major source of maintenance headaches and downtime if not designed correctly.

What is an Aggregate and Sand Dryer?

An aggregate and sand dryer is a piece of heavy industrial equipment designed for continuous duty. It’s essentially a large, rotating drum that uses hot gas to evaporate moisture from a stream of material.

These are not one-size-fits-all machines. A small gravel dryer for a landscape supplier is very different from a massive dryer for a high-capacity asphalt plant. As a factory-direct manufacturer, ZONEDING custom-engineers each dryer for the specific material, capacity, and fuel source of the customer.

What are Applications Industry of the Aggregate and Sand Dryer?

Beyond the main uses in asphalt and concrete, these versatile machines are found in many industries:

• Mining: Drying mineral concentrates like iron ore, copper, or sand to reduce shipping weight and prepare for further processing.
• Agriculture: Drying feed ingredients, fertilizers, and biomass.
• Industrial Minerals: Drying materials like clay, slag, limestone, and gypsum.
• Environmental: Drying contaminated soils for remediation or sludges to reduce disposal volume.

Application of Sand Dryer

• Artificial sand, river sand, quartz/silica sand, yellow sand, etc. in building materials;
• Iron powder, zinc ore powder and other mineral powders in the beneficiation process; fly ash, limestone and other particles in the cement industry;
• Raw coal powder, semi-coke, coal gangue, coal ash, etc. in the coal industry and power plants;
• Other power such as dry-mix mortar, slag, clay, gypsum, chemical industry, foundry and other industries.

Applications of Sand Dryer

Which Aggregate and Sand Can Be Processed?

A well-designed aggregate drying machine can handle a wide range of materials. The key is to match the dryer design to the material properties.

• Fine Sand (e.g., for glass or mortar): This requires gentle heating to avoid fracturing the particles. You also need excellent dust control. The dryer’s rotation speed and flight design must create a soft, continuous curtain.
• Coarse Aggregate (e.g., for construction): This material can handle more aggressive heating. However, larger particles are harder to lift, so the flights must be robust and angled correctly to ensure a good material curtain.
• Sticky Materials (e.g., Clay): These materials can build up inside the dryer. They often require special flight designs and sometimes internal chain “curtains” to break up clumps.
• What is the Structure of an Aggregate and Sand Dryer?

What is the Structure of an Aggregate and Sand Dryer?

A rotary dryer is a system of heavy-duty components working together.

• Drum Shell: This is the main body. It’s a long cylinder made of thick, high-strength steel.
• Riding Rings & Trunnions: The drum has two or more massive steel rings around it. It rotates on a set of heavy steel wheels called trunnions. These support the entire weight of the drum and material.
• Drive System: A large gear (the girth gear) is attached to the drum. A motor and gearbox turn a small pinion gear that engages the girth gear to rotate the drum. This provides a positive, non-slip drive. Some smaller dryers use a chain drive or a friction drive where the trunnions themselves turn the drum.
• Flights (Lifters): These are the engineered steel plates inside the drum. Their shape, number, and spacing are critical for creating an efficient material curtain.
• Burner & Seal System: The burner generates the heat. Advanced seals at both ends of the dryer prevent cold air from leaking in, which is a major cause of wasted fuel.

How Does the Aggregate and Sand Dryer Work?

The sand drying machine working principle is all about maximizing “residence time.” It’s not just the temperature of the hot gas, but how long each particle spends in contact with it.

1. Wet material enters the high end of the slightly inclined drum.
2. The drum rotates slowly (typically 3-5 RPM).
3. The flights lift the material up the side of the drum.
4. At the top of the rotation, the material slides off the flights and falls through the hot gas stream. This is where the drying happens.
5. This process repeats hundreds of times as the material gradually tumbles its way to the discharge end of the dryer.

The residence time is controlled by three factors: the rotation speed of the drum, the slope of the drum, and the design of the flights. A good dryer design balances these three things perfectly for your specific material.

Working Principle of Sand Drying Equipment

When the sand dryer is running, there are three main systems working, the boiler system, the heat exchange system and the dust removal system. The first system uses hot blast furnace technology. The heat exchange system mainly refers to a three-cylinder drum in which the wet sand is lifted in full contact with the gale. The lifting blade fixed to the inner wall has a spiral-shaped structure. Dry materials are easily blown away by flowing air. Here, the dust collector gets to work to avoid waste of resources or air pollution.

Working Principle of Sand Dryer

Structure And Advantages of Rotary Dry Sand Machine

The sand dryer is mainly composed of a rotary cylinder, air induction equipment, high-speed scattering equipment, lifting plate, automatic cleaning device, transmission device, conveying equipment, hot air equipment, reducer, support and sealing device, etc.

Exquisite workmanship: wear-resistant manganese plate is used, and the wear resistance is 3-4 times that of ordinary steel plate;

Stable performance and advanced technology: the output humidity of the sand can be controlled below 0.5-1% according to your requirements, and the sand in the dryer can maintain its quality;

Small footprint and reasonable design: compared with traditional dryers, the new sand drying equipment covers 60% less area;

Other advantages: low maintenance costs, low energy consumption, high degree of mechanization.

What is the Price of an Aggregate and Sand Dryer?

The industrial aggregate dryer cost is a major factor, but you must consider the “Total Installed Cost,” not just the equipment price.

• Dryer Drum: This is the core machine. Prices can range from $50,000 for a small unit to over $500,000 for a large-capacity dryer.
• “Hidden” Costs: The cost of the foundation, electrical systems, conveyors, and especially the dust collection system can be 2 to 3 times the price of the dryer drum itself.

Another key cost is the fuel. Your choice of fuel (natural gas, diesel, propane, or even coal) impacts both the burner cost and your daily operating expense. Natural gas burns cleanest, but diesel may be more available in remote locations. It’s a critical decision to discuss with your supplier.

How to Maintain the Aggregate and Sand Dryer?

Proper rotary dryer maintenance for sand is about regular, disciplined checks. This prevents unplanned downtime.

Frequency	Task	Why It’s Important
Daily	Visual inspection. Listen for new sounds. Check bearing temperatures.	Catches small problems before they become major failures.
Weekly	Grease all bearings. This is the most crucial task.	Prevents bearing failure, the #1 cause of major downtime.
Weekly	Check drive system (belt/chain tension, gear lubrication).	Ensures efficient power transmission.
Monthly	Inspect the internal flights for wear, especially at the feed end.	Helps you plan for future repairs and avoid a sudden failure.
Quarterly	Check alignment. Inspect the wear pattern on the trunnions and riding rings.	An aeven wear pattern is an early warning of misalignment that can destroy bearings and the drum itself.

Precautions for Installation In The Sand Dryer

>> The sand dryer should be installed on a horizontal concrete bed and fixed with anchor bolts;

>>The main body of the rotary dry sand machine should be perpendicular to the horizontal ground;

>>Check each anchor bolt and door of the main machine to see if it is locked;

>>Distribute wires and control switches as instructed;

How to Choose the Aggregate and Sand Dryer?

1. Start with Your Material: What is it? What is its size? What is the starting and ending moisture content?
2. Define Your Capacity: How many tons per hour do you need to process? Be realistic about your average and peak needs.
3. Question the Design: Ask potential suppliers about their flight design, seal system, and what materials they use in high-wear areas. A good manufacturer will have detailed answers.
4. Consider Total Cost of Ownership: Look at the sand dryer fuel consumption and maintenance requirements, not just the purchase price. An efficient, well-built dryer from a manufacturer like ZONEDING will have a lower total cost over its lifetime.
5. Plan for the System: Remember the dryer is just one part. You need to plan for the feed system, conveyors, and dust collection as well.

What are Features of Aggregate and Sand Dryers from ZONEDING?

At ZONEDING, we build solutions, not just machines. Our designs are based on decades of experience in the toughest applications.

• Engineered for Efficiency: We use advanced modeling to design flight systems that create the perfect material curtain for your specific material, maximizing heat transfer and minimizing fuel use.
• Built to Last: We use high-grade, abrasion-resistant (AR) steel as standard in all high-wear areas. Our robust frames and oversized drive systems are designed for decades of service.
• Positive Drive Systems: We use reliable girth gear drive systems to provide positive, non-slip rotation, even under heavy or surging loads.
• Factory-Direct Value: You work directly with our engineers. This eliminates distributor markups and ensures you get a machine that is perfectly configured for your needs and budget.

General Specification