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Product Description
With over 15 years of deep roots in the mineral drying sector, we are a source manufacturer of comprehensive drying solutions for the quartz sand processing industry. We focus on serving downstream enterprises in glass manufacturing, precision casting, water treatment filter media, building materials, and chemical fillers.
Our single-line processing capacities comprehensively cover a wide range from 5 TPH to 100 TPH, satisfying the needs of small-to-medium sand yards as well as large-scale corporate multi-line parallel production projects. We are an authentic manufacturing factory with our own production base—definitely not a middleman or trading company. We independently manage the entire process, from initial scheme design and component machining to complete machine assembly and factory testing. To guarantee absolute reliability, every single piece of equipment undergoes a rigorous 72-hour continuous full-load test run before shipment.
Quartz sand is among the "hardest" materials in the mineral world. It combines a Mohs hardness of 7, high density, high specific heat capacity, and excellent fluidity. Together, these three traits mean that a drying system must conquer a triple challenge: severe abrasive wear, massive thermal demand, and rapid material flow.
The Wear Challenge: With conventional dryers, it is common to see the drum shell worn through and lifting flights completely ruined within 6 months.
The Application Challenge: Downstream requirements are highly fragmented. Glass sand requires moisture below 0.5%, foundry sand below 0.3%, filter media below 1%, and washed sand sometimes requires retaining a specific moisture level. How do you switch products on the same production line? Most manufacturers cannot provide a viable answer.
Our specialized quartz sand rotary drying line is engineered precisely to counter these practical production pain points:
An ultra-robust wear-resistant system allows the equipment to withstand the violent scouring of quartz sand.
One-touch process parameter switching seamlessly adapts to multiple downstream specifications.
Fully enclosed, negative-pressure operation ensures zero dust leakage.
To date, we have delivered a vast number of stable drying production lines to major quartz sand consumer markets globally, including Southeast Asia, the Middle East, Africa, and South America, maintaining a high customer satisfaction and reorder rate.
If you are looking for a reliable source manufacturer that truly understands quartz sand drying—from technical selection and customized scheme design to equipment manufacturing, installation guidance, and lifetime after-sales maintenance—we are your ideal choice. We support on-site factory inspections, OEM/ODM customization, and worldwide shipping.
Functional Principle
The core of the equipment is a slightly inclined, slowly rotating steel drum. Wet quartz sand is uniformly fed into the elevated inlet via a belt conveyor or screw feeder. As the drum rotates at a low speed, internal combined lifting flights repeatedly lift and shower the sand particles, forming a highly uniform "material curtain." This ensures that every single grain of sand comes into full contact with the high-temperature hot air.
The hot air is delivered from the discharge end toward the feed end, creating a counter-current contact layout that maximizes heat exchange efficiency. The dried quartz sand is discharged from the lower end via a star-type rotary discharge valve, while the high-temperature, humid exhaust gas is drawn out from the top end to be processed by the dust collection system before eco-friendly emission.
The interior of the drum naturally creates three functional temperature zones along the material path:
Preheating Zone (Inlet End): The material gradually absorbs heat, gently raising its temperature from ambient to 80°C to 120°C. Because quartz sand has a high specific heat capacity and heats up slowly, this zone uniformly preheats the sand grains, preventing surface thermal shocking and cracking caused by excessive temperature deltas. Simultaneously, it strips away surface free water, setting the stage for deep drying.
Main Drying Zone (Middle Section): Temperatures here reach 300°C to 450°C, making this the primary zone for rapid dehydration. Here, the quartz sand undergoes its main transformation from high to low moisture. Because quartz sand is non-sticky and does not clump, the drying intensity in this zone can be maximized for peak dehydration efficiency.
Cooling Zone (Outlet End): A lower-temperature airflow cools the dried quartz sand to below 60°C before discharge. This step is critical: if high-temperature sand enters a storage silo directly, condensation will form due to the temperature difference, causing the final moisture content to bounce back. Cooling the output locks the moisture precisely at its target value while eliminating safety hazards during high-temperature material conveying.
Drive & Thermal Systems
The heat source is equipped with a versatile multi-fuel combustion system supporting natural gas, diesel, heavy oil, pulverized coal, and biomass pellets, giving you the freedom to choose based on local energy pricing. For glass factories or foundries with existing waste heat resources, low-grade waste steam can be routed directly into the system to compress operational costs even further.
The drive system utilizes a variable frequency drive (VFD) motor paired with a hard-tooth surface gear reducer, allowing the drum speed to be steplessly adjusted between 2 to 6 rpm. The system automatically adapts to the feed volume—accelerating during peak loads and slowing down during lower inputs—to maintain an optimal balance between capacity and energy consumption.
Furthermore, due to the high hardness and abrasive nature of quartz sand, our transmission system features an extra overload protection device. If an uneven material distribution inside the drum causes an abnormal torque spike, the system automatically slows down and triggers an alarm to prevent equipment damage.
Exhaust Treatment
Although quartz sand drying generates less dust than materials like bentonite, fine sand particulates still require stringent control. The exhaust treatment sequence is highly effective: a cyclone dust collector first intercepts large particles and coarse sand, followed by a baghouse dust collector that captures fine particulates, keeping final emission concentrations strictly under 30 mg/m³. For regions with ultra-strict environmental mandates, a wet scrubber can be integrated to achieve near-zero emissions. The recovered fine sand can be remixed back into the finished product, minimizing material loss.
Core Features
1. Ultra-Robust Wear-Resistant System Engineered for Severe Abrasion
Quartz sand has a Mohs hardness of 7, causing a scouring and abrasive wear effect on equipment inner walls that far exceeds conventional minerals. Our solution goes beyond simply adding a few wear plates; we have engineered a comprehensive wear-defense system:
The inner wall of the drum is lined with high-chromium alloy wear liners.
The lifting flights utilize a manganese steel base reinforced with tungsten carbide hardfacing.
Replaceable ceramic protection blocks are installed in critical high-impact zones.
The drum's supporting riding rings (tyres) undergo a specialized surface quenching treatment.
This fourfold wear-defense layout extends the equipment's lifespan by 2 to 3 times compared to standard carbon steel drums. Many clients report that even after three years of continuous operation, the inner wall wear remains minimal, and the lifting flights only require localized maintenance rather than complete replacement.
2. One-Touch Process Switching to Serve Multiple Markets
Because quartz sand is used in diverse downstream applications, different clients demand entirely different final moisture levels. The traditional method requires shutting down the line to manually adjust parameters for every product swap, wasting immense time. Our PLC control system features pre-programmed process packages for glass sand, foundry sand, filter sand, construction sand, and more. Operators simply select the product type on the touchscreen, and the system automatically readjusts the feed rate, drum speed, hot air temperature, and air volume—completing the swap within 10 minutes without stopping the line. This maximizes capacity utilization for yards handling multiple diverse orders.
3. Fully Enclosed, Negative-Pressure Operation for Zero Dust Leakage
Dust control is the biggest environmental hurdle in quartz sand drying workshops. Our equipment features a completely sealed design from the inlet to the outlet, keeping the entire system under a continuous micro-negative pressure. All joints utilize labyrinth seals coupled with flexible compensation structures, completely eliminating any air or dust leakage. Working in tandem with our dual-stage cyclone + baghouse filtration, the final emission concentration is kept strictly ≤ 30 mg/m³, allowing your plant to easily pass stringent environmental audits even if located near residential areas.
4. Modular Engineering for Effortless Capacity Expansion
Many sand yards install a 5 TPH line today, but find their orders double to 15 TPH next year and scale to 30 TPH the year after. If you purchase an all-in-one fixed machine, expansion means scrapping the old unit and buying a new one. Our lines utilize a modular architecture: the drying host, heat source, dust collection system, and control system are entirely independent. When expanding capacity, you simply add an extra drying host unit in parallel. You can scale from 5 TPH to 50 TPH by integrating new units without dismantling your existing line.
5. Optimal Lifecycle Cost: Focused on Total Cost of Operation
While many buyers compare only the upfront purchase price, dryers are 24-hour operational machines where electricity and fuel constitute the true long-term costs. Our waste heat recovery system pulls overall thermal efficiency up from the industry average of ~35% to 55% to 65%, while the VFD drive shaves off an extra 20% to 30% in power consumption. For a 50 TPH capacity setup, these combined efficiencies save hundreds of thousands of yuan annually in utility bills. The equipment represents a slightly higher initial investment, but the payback via operational savings quickly bridges the gap.
6. Extensive Export Experience and Seamless Logistics
We regularly serve international markets in Southeast Asia, the Middle East, Africa, and South America, making us highly familiar with international port shipping requirements, packaging standards, and customs clearance paperwork. Equipment can be shipped naked or containerized, with large components dispatched split-body alongside detailed installation blueprints. From order placement to vessel loading, standard models take 30 to 45 days, while customized models take 45 to 60 days—lead times explicitly guaranteed in our contracts.
7. Premium After-Sales Guarantees
We offer a 12-month warranty on the entire machine, and an 18-month warranty on the reducer and motor. High-chromium liners, tungsten carbide lifting flights, scraper chains, and other common wear parts are kept in stock year-round and ship within 48 hours of an order. We provide comprehensive remote technical guidance and on-site commissioning services, ensuring final commissioning and acceptance are completed within 72 hours of the equipment arriving at your site. We don't just sell a machine; we deliver a long-term, stable production line.
Get a Custom Engineering Scheme Within 24 HoursPlease send us your initial moisture content, target final moisture, daily capacity requirements, available fuel types, and site dimensions. We will deliver a comprehensive technical proposal and quotation within 24 hours. Factory direct supply with zero middleman markups—contact us today to schedule an on-site factory visit!
Technical Specifications
| Product Specs (m) | Capacity (T/H) | Main Motor Power (kW) | Main Motor Model | Main Gearbox Model | Ratio |
| φ1.2×10m | 2.5 | 7.5 | Y160M-R3 | ZL50-16-1 | - |
| φ1.5×12m | 3.3 - 4.9 | 10 | Y160L-6B3 | JZQ500-III-2F | - |
| φ1.5×15m | 4 - 6 | 18.5 | Y200L-6 | JZQ500-III-2F | - |
| φ1.8×12m | 4 - 6 | 11 | Y200L-6 | ZQ50-16II-2 | 16.46 |
| φ2.2×12m | 7 - 12 | 18.5 | Y160L-6 | JZQ650-III | 31.5 |
| φ2.2×14m | 7 - 12 | 18.5 | Y160L-6 | JZQ750-III | 31.5 |
| φ2.2×16m | 12 | 30 | Y225M-6 | JZQ750-III | 31.5 |
| φ2.4×14m | 12 | 30 | Y250M-6 | JZQ750-III | 31.5 |
| φ2.4×18m | 10 - 13 | 37 | Y250M-6 | ZL85-13-1 | 27.16 |
| φ2.4×20m | 10 - 14 | 37 | Y250M-6 | ZL85-13-1 | 27.16 |
| φ3×20m | 25 | 55 | Y250M-4 | ZL100-16-1 | 41.52 |
| φ3×25m | 32 - 36 | 75 | YR280M-4 | ZL100-16-1 | 41.52 |
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