Sand Dryer
Industrial Three-Channel Rotary Dryer for River Sand, Sea Sand and Quartz Sand Uniform Drying
Sand Dryer is a professional industrial rotary drying equipment specially designed for granular mineral sand materials. Adopting advanced three-channel nested circulation structure, it completely solves the low efficiency, uneven drying and serious abrasion defects of traditional single-cylinder dryers. It can efficiently dry high-moisture river sand, sea sand, quartz sand and construction aggregate, reducing raw sand moisture from 15%-20% to 0.5%-1% industrial standard, supporting large-scale continuous production for construction, mineral processing and dry-mixed mortar industries.
Energy-Saving
Uniform Drying
Eco-Friendly
What is Sand Dryer?
Fresh mined coal, including lignite, raw coal and coal slime, usually contains high surface and internal moisture. High-moisture coal leads to low heat value, insufficient combustion, low market selling price, and is prone to mildew, spontaneous combustion and difficult long-term storage. Traditional natural drying is restricted by weather, low in efficiency and unable to meet large-scale coal mine production demands.
Our professional rotary drum coal rotary dryer is specially upgraded with explosion-proof, anti-combustion and low-abrasion structure for coal material characteristics. Coal particles are heavy, hard and fragile; high wind speed and multi-turn multi-pass drying will cause serious coal breakage, large powder loss and reduced coal market value. The rotary drum adopts low-temperature straight-line gentle drying technology with low wind speed and low material friction, completely avoiding coal particle crushing and spontaneous combustion risks. It solves coal slime adhesion and uneven drying problems, retains complete coal particle shape, and greatly improves finished coal quality and economic benefits.
Contents
Complete Equipment Composition of Sand Dryer
1. Heavy-Duty Rotary Drum Anti-Stick Host (Core Part)
Adopts integrated rotary straight drum structure, equipped with coal-specific thickened anti-stick and low-abrasion lifting plates. Optimized lifting angle adapts to heavy coal particles, ensuring full material flipping and heat exchange without severe collision and crushing. The low-temperature uniform drying mode avoids local overheating, solves coal slime adhesion and agglomeration, and guarantees complete coal particle shape and uniform dehydration effect.
2. Explosion-Proof Hot Air Heating System
Supports multiple safe heating sources including clean biomass hot air stove, natural gas and industrial steam. Equipped with temperature real-time monitoring and over-temperature alarm device. It maintains stable low-temperature circulating hot air, eliminates coal spontaneous combustion and explosion risks, and meets coal mine safety production standards.
3. Special Anti-Blocking Feeding System
Matched sealed quantitative feeding device for sticky coal slime and loose raw coal. It realizes uniform and continuous feeding, effectively prevents material blockage, material leakage and dust overflow, ensures stable and consistent drying effect of each batch of coal materials.
4. High-Efficiency Dust Removal & Explosion Venting System
Equipped with cyclone dust collector and bag dust removal device, with professional explosion venting and pressure relief structure. It collects floating coal dust completely, realizes closed dust-free production, avoids coal dust explosion risks, fully complies with global mine environmental protection and safety emission standards.
5. Intelligent PLC Safety Control Cabinet
Intelligent one-key operation system with real-time temperature, wind speed and material monitoring. It has automatic over-temperature protection, power failure protection and fault alarm functions. Workers can set target moisture freely, realizing unmanned safe 24-hour continuous drying operation.
Core Product Advantages of Sand Dryer
1. Professional Explosion-Proof & Anti-Spontaneous Combustion Design
Aiming at the flammable and explosive characteristics of coal and coal dust, this rotary drum coal dryer adopts low-temperature low-wind-speed circulating drying mode and multiple safety protection devices. Gentle hot air circulation avoids high-temperature direct baking and local overheating, completely eliminates coal spontaneous combustion and dust explosion risks, fully meeting strict coal mine industrial safety production standards.
2. Anti-Stick Structure for Coal Slime
Customized anti-stick lifting plates and drum inner wall treatment solve the core industry pain point of coal slime adhesion and wall sticking. The equipment continuously scatters clustered coal slime during operation, ensuring no material accumulation and thorough uniform dehydration, improving coal slime recycling utilization rate.
3. Low Coal Breakage & Complete Particle Retention (Core Advantage)
Different from multi-pass dryers with high wind speed and multi-turn friction that easily crush coal particles, the rotary drum dryer features straight-line operation, low wind speed and gentle material movement. It effectively avoids coal particle breakage and excessive fine powder generation, retains complete coal grain structure, and greatly improves finished coal selling price. The optimized heat exchange system ensures high thermal efficiency and low long-term operating cost.
4. Stable Finished Coal Quality & Higher Calorific Value
Precise temperature and speed control stably controls finished coal moisture at 8%-15%. After low-temperature gradual drying, coal internal moisture is fully evaporated without heat loss. The combustion calorific value is significantly improved, coal selling price is increased, bringing direct economic benefits for coal mines.
5. Low Dust & Environmental Protection
Fully sealed drying and professional multi-stage dust removal system effectively controls coal dust overflow. It reduces material loss caused by coal dust floating, improves raw material utilization rate, and complies with global mine environmental protection emission regulations.
6. Large Capacity & Safe Continuous Production
Heavy-duty rotary drum industrial structure supports 24-hour uninterrupted high-load operation. It continuously processes large quantities of raw coal, lignite and coal slime, fully meeting large-scale centralized drying demands of coal washing plants and mining bases with low failure rate and stable performance.
Working Principle & Production Process of Sand Dryer
Working Principle
The coal rotary dryer adopts low-temperature rotary drum straight-line hot air drying principle, professionally designed for heavy, hard and fragile coal particles. Wet raw coal, lignite or coal slime is quantitatively and evenly sent into the rotary drum through the sealed feeding system. With drum rotation, the anti-stick low-abrasion lifting plates gently lift and scatter coal materials to form a uniform material curtain. Through continuous gentle heat exchange, surface and internal moisture are fully evaporated uniformly. Low wind speed avoids coal particle floating and crushing. Water vapor and fine coal dust are purified by the multi-stage dust removal system, and qualified dry coal with complete particles and stable moisture is stably discharged, completing the whole safe and low-loss drying process.
Standard Production Flow
Wet Coal Feeding → Sealed Conveying → Rotary Drum Gentle Low-Temperature Drying → Uniform Dehydration & Dust Removal → Dry Coal Discharging → Storage / Transportation / Deep Processing
Application Scenarios of Sand Dryer
This explosion-proof coal rotary dryer is specially designed for coal mining and mineral processing industry, widely used in coal mines, coal washing plants, coal slime processing bases and thermal power plants. It is suitable for drying lignite, raw coal, coal slime, fine coal and other coal materials. It solves the problems of high moisture, low calorific value, easy spontaneous combustion and difficult storage of raw coal, and provides high-quality standard coal raw materials for power generation, industrial combustion and coal deep processing.
Core Application Fields: Lignite dewatering, coal slime resource recycling, raw coal pretreatment for power plant, coal washing plant supporting drying, mineral coal deep processing
Global Project Cases Of Sand Dryer
Case 1: 20T/H River Sand Drying Project | Philippines Building Materials Factory
Project Info: The customer needs large-scale continuous drying of natural river sand for dry-mixed mortar production. Our three-channel sand dryer realizes stable high-output operation, with finished sand moisture stably controlled at 0.8%. The energy-saving design reduces long-term power consumption by 35%, and the equipment runs stably all year round with zero material loss, greatly improving customer production efficiency and profit margin.
Case 2: 12T/H Quartz Sand Drying Project | Vietnam Mineral Processing Plant
Project Info: The customer produces high-purity quartz sand for glass manufacturing, requiring extremely uniform drying. Our gradient three-stage drying process ensures consistent moisture of finished quartz sand without particle damage. The wear-resistant structure adapts to high-hardness quartz sand, extending equipment service life and meeting high-standard industrial production requirements.
Case 3: 15T/H Sea Sand Drying & Purification Project | Indonesia Port Processing Base
Project Info: The project processes large quantities of wet sea sand with high impurity and high moisture. Our fully sealed drying and dust recovery system realizes clean production, removes surface moisture and residual impurities of sea sand. The finished dried sea sand fully meets construction sand standards, solving the problem of insufficient local building materials and bringing huge economic benefits.
Technical Parameters of Sand Dryer
| Model | YHS623 | YHS625 | YHS6210 | YHS6225 | |
| Specification (Dia of cylinder x Length) | Φ1650×1650 | Φ2000×2000 | Φ2450×2450 | Φ2800×4000 | |
| Cylinder volume (m³) | 3.1 | 5.6 | 10.6 | 22.3 | |
| Cylinder rotation speed (rpm) | 9.79 | 9.95 | 10.62 | 11.82 | |
| Raw material moisture (%) | 10-12 | 10-12 | 10-12 | 10-12 | |
| Final moisture content (%) | ≤1 | ≤1 | ≤1 | ≤1 | |
| Maximum intake temperature (℃) | 800 | 800 | 800 | 800 | |
| Production capacity (t/h) | Slag | 3-5 | 5-6 | 10-12 | 25-28 |
| Fly ash | 3-5 | 5-6 | 10-12 | 25-28 | |
| Yellow sand | 3-5 | 5-6 | 10-12 | 25-28 | |
| Motor | Y 100L2-4 | Y 100L2-4 | Y 132M-4 | Y 132S-4 | |
| Power (Kw) | 3 | 3×2 | 7.5 | 5.5×4 | |
| Gear Box | XWD 5 | XWD 5 | JZQ350 | XWD 5 | |
| Speed Ratio of gear box | 23 | 23 | 20.49 | 17 | |
Get Custom Sand Drying Solution
Our three-channel Sand Dryer breaks through the defects of traditional single-cylinder drying equipment, with core advantages of high thermal efficiency, uniform drying, super wear resistance, large output and zero material loss. It provides stable and high-quality industrial drying solutions for global building materials, mineral processing and dry-mixed mortar enterprises, helping customers reduce production costs and improve market competitiveness.
Contact us now to get free model selection, capacity matching and accurate project quotation!
FAQs of Sand Dryer
Q1: What kind of sand materials can this dryer process?
A: It adapts to all common granular sand materials, including natural river sand, sea sand, quartz sand, silica sand, construction aggregate and dry mortar raw sand. It is a multi-functional industrial sand drying equipment for building materials and mineral industries.
Q2: What is the final moisture standard of dried sand?
A: The finished sand moisture can be adjusted freely between 0.5%-1%. The conventional industrial standard is 0.5%-1%, which is completely suitable for dry-mixed mortar, commercial concrete and high-precision mineral product processing, no mildew or agglomeration during storage.
Q3: Why is three-channel dryer more energy-saving than single-cylinder dryer?
A: The three-layer nested closed circulation structure avoids a large amount of heat radiation loss. The hot air is reused in layers, and the thermal efficiency is increased by more than 35%. Under the same output, the power and fuel consumption are significantly lower, with outstanding long-term cost advantages.
Q4: Will high-hardness sand wear the equipment seriously?
A: No. The whole drum is lined with thickened high-manganese steel wear-resistant plates, and the lifting plates are optimized for anti-wear design, which can resist long-term friction and impact of sand particles. The vulnerable parts are replaceable, with low maintenance cost and long service life.
Q5: Is there fine sand loss and dust pollution?
A: No. Equipped with professional cyclone dust removal and fine material recovery device, the fine sand recovery rate is up to 99.9%. The fully sealed micro-negative pressure operation realizes zero dust overflow, meeting international environmental protection standards and clean production requirements.
