Gypsum Dryer
Anti-Stick Low-Temp Rotary Dryer for Desulfurization Gypsum, Phosphogypsum & Building Plaster Drying
Gypsum Dryer is a professional industrial drying equipment specially customized for viscous, heat-sensitive gypsum materials. It is exclusively developed for desulfurization gypsum, phosphogypsum and natural plaster ore, solving the core industry pain points of traditional dryers such as gypsum wall sticking, agglomeration and high-temperature activity failure. Adopting precise gradient low-temperature drying technology, it stably reduces raw gypsum moisture from 20%-30% to 3%-8%, completely retaining the gelling activity of β-hemihydrate gypsum, and providing high-quality raw materials for building plaster, gypsum board and industrial gypsum production.
Anti-Stick
Activity Retention
Stable Operation
What is Gypsum Dryer?
Raw gypsum materials including mined natural gypsum, power plant desulfurization gypsum and chemical phosphogypsum have high natural moisture and strong viscosity. During drying, they are extremely prone to sticking to the drum wall and forming hard agglomerates. More importantly, gypsum is a typical heat-sensitive material; excessively high drying temperature will destroy its crystal structure, causing hemihydrate gypsum to lose gelling activity, resulting in unqualified plaster strength and directly scrapping the finished product.
Ordinary rotary dryers adopt single high-temperature drying mode, which cannot solve the problems of viscous gypsum adhesion and uneven drying. Local overheating often leads to large-scale gypsum failure, bringing huge economic losses to production. Our upgraded Industrial Gypsum Dryer adopts exclusive anti-stick self-cleaning structure and gypsum-specific low-temperature gradient drying process. It thoroughly removes excess moisture without damaging gypsum activity, ensuring uniform drying and stable finished product quality. It is the core supporting equipment for standardized production of building gypsum and industrial chemical gypsum.
Contents
Complete Equipment Composition of Gypsum Dryer
1. Gypsum-Specific Anti-Stick Self-Cleaning Rotary Drum (Core Upgrade)
Aiming at the strong viscosity of wet gypsum, the inner wall of the drum is equipped with customized flexible self-cleaning lifting plates and anti-stick baffles. During operation, the device continuously scrapes off sticky gypsum materials on the wall and breaks agglomerated gypsum clusters in real time, completely eliminating material accumulation and drying dead zones. The optimized material flipping structure forms a uniform and fluffy gypsum material curtain, ensuring full contact between gypsum particles and hot air, realizing efficient and uniform dispersion drying.
2. Anti-Blocking Uniform Feeding System
Matched with sealed variable-frequency quantitative feeding equipment for viscous gypsum materials. It intelligently adjusts the feeding speed according to raw gypsum moisture and fluidity, effectively avoiding bridging, blockage and surge feeding caused by high viscosity wet gypsum. Stable and continuous feeding maintains a balanced internal heat exchange environment, ensuring consistent drying effect and activity of each batch of gypsum finished products.
3. Low-Temp Gradient Activity Protection Drying System
Adopting industry-exclusive three-stage low-temperature gradient drying process tailored for heat-sensitive gypsum materials. The low-temperature preheating zone evaporates surface free water rapidly; the medium-temperature uniform dehydration zone removes internal capillary moisture gently; the constant-temperature shaping zone stabilizes gypsum crystal structure. The whole process strictly controls the temperature within the safe range of gypsum activity, effectively preventing crystal decomposition and gelling failure caused by overheating, and retaining 100% plaster bonding performance.
4. High-Efficiency Gypsum Powder Recovery & Dust Removal System
Gypsum powder is fine and easy to float during drying. The equipment is equipped with integrated cyclone separation and pulse bag dust removal device, with a powder recovery rate up to 99.8%. It fully recovers overflow fine gypsum powder, avoiding waste of high-value raw materials. The fully sealed micro-negative pressure operation realizes zero dust overflow, meeting international environmental protection emission standards for building material production.
5. Waste Heat Circulation Energy-Saving Device
Equipped with intelligent waste heat recycling module, which recycles waste hot air after heat exchange for secondary cyclic heating. It greatly improves thermal utilization rate, reduces fuel and power consumption, and increases energy-saving efficiency by more than 35% compared with traditional gypsum dryers. The cyclic hot air structure avoids local overheating of materials and further guarantees the stability of gypsum physical and chemical properties.
6. Gypsum Dedicated PLC Intelligent Control System
Presets exclusive drying parameter database for natural gypsum, desulfurization gypsum and phosphogypsum respectively. The system automatically adjusts drum speed, hot air temperature and air volume in real time according to raw material moisture and type. It has over-temperature anti-failure protection, blockage alarm and fault self-diagnosis functions, supporting 24-hour unmanned stable production of gypsum materials.
Core Product Advantages of Gypsum Dryer
1. Exclusive Anti-Stick Self-Cleaning, Zero Material Accumulation
Targeted optimized self-cleaning structure completely solves the industry pain points of wet gypsum wall-sticking and agglomeration. The real-time scraping and dispersion function ensures that all viscous gypsum materials are fully flipped and dried without dead zones. The finished gypsum has loose texture and uniform particle size, no residual agglomerates, and stable overall quality.
2. Low-Temp Precise Drying, 100% Gypsum Activity Retention
Different from ordinary high-temperature dryers that easily cause gypsum crystal decomposition and activity loss, the graded low-temperature mild drying process strictly protects the internal crystal structure of gypsum. It perfectly retains the gelling strength and bonding performance of β-hemihydrate gypsum, ensuring the finished plaster fully meets building material strength standards without quality failure.
3. Ultra-Low Powder Loss & High Material Utilization
Equipped with a complete high-precision fine powder recovery system, the gypsum powder recovery rate reaches 99.8%, almost no loss of fine powder materials. Compared with traditional drying equipment, it greatly improves the utilization rate of desulfurization gypsum and phosphogypsum, maximizes resource benefits, and reduces production costs for customers.
4. Wide Adaptability for All Gypsum Types
This industrial gypsum dryer supports drying of all mainstream gypsum materials, including natural gypsum ore, power plant desulfurization gypsum, chemical phosphogypsum and building plaster powder. It can adapt to raw materials with different moisture and viscosity, realizing one machine for multiple purposes and meeting diversified gypsum deep processing needs.
5. High Energy Efficiency & Stable Operation
The closed waste heat circulation heat exchange structure greatly improves thermal efficiency, with energy saving rate 35% higher than traditional gypsum drying equipment. The equipment has reasonable structure, low failure rate and strong anti-overload capability, which can adapt to long-term 24-hour continuous high-load production with stable output.
6. Eco-Friendly & Standard Emission
Full sealed micro-negative pressure operation prevents gypsum dust leakage and environmental pollution. The professional dust purification system realizes up-to-standard tail gas discharge, complying with global building material and chemical industry environmental protection regulations, suitable for large-scale standardized green production projects.
Working Principle & Production Process of Gypsum Dryer
Working Principle
The Industrial Gypsum Dryer adopts anti-stick self-cleaning dispersion + low-temperature gradient activity protection drying principle exclusive for heat-sensitive viscous gypsum. High-moisture wet gypsum is stably and quantitatively sent into the rotary drum through the anti-blocking feeding system. The built-in self-cleaning lifting structure continuously scrapes wall-sticking materials and breaks gypsum agglomerates to form a fluffy and uniform material curtain.
Materials complete surface pre-dehydration, internal deep drying and constant-temperature shaping in three functional zones step by step under controllable low-temperature environment, which effectively avoids crystal decomposition and activity failure caused by high temperature. The floating fine gypsum powder is fully recycled by the dust recovery system to maximize resource utilization. The whole process realizes high-efficiency, low-loss and zero-failure drying, ensuring stable gelling performance of finished gypsum products.
Standard Production Flow
Wet Gypsum Feeding → Variable-Frequency Quantitative Conveying → Anti-Stick Dispersion & Deagglomeration → Low-Temp Gradient Activity Protection Drying → Fine Gypsum Powder Recovery → Waste Heat Circulation Utilization → Dry Gypsum Discharging → Building Material & Industrial Gypsum Processing
Application Scenarios of Gypsum Dryer
This professional Gypsum Dryer is widely used in building material production plants, power plant desulfurization projects, chemical phosphogypsum recycling bases and gypsum deep processing factories. It is specially used for drying various viscous and heat-sensitive gypsum materials. The dried high-activity gypsum can be directly used for building plaster, gypsum board manufacturing, cement retarder production and industrial chemical raw materials, realizing resource recycling of waste gypsum and creating high economic and environmental benefits.
Core Application Fields: Desulfurization gypsum recycling, phosphogypsum processing, building plaster production, cement retarder raw material drying, gypsum panel manufacturing
Global Project Cases Of Gypsum Dryer
Case 1: 15T/H Desulfurization Gypsum Drying Project | Vietnam Power Plant Supporting Project
Project Info: The customer needs large-scale drying of power plant desulfurization gypsum for cement retarder production. Traditional dryers have serious wall sticking and partial overheating failure. Our anti-stick low-temperature gypsum dryer completely solves material accumulation problems, stably controls finished moisture at 5%, and 100% retains gypsum gelling activity. The finished products fully meet national cement retarder standards with stable batch quality.
Case 2: 10T/H Building Plaster Gypsum Project | Thailand Building Material Factory
Project Info: The customer produces high-purity building plaster, requiring strict control of gypsum activity and no powder loss. Our graded low-temperature drying process ensures no crystal damage of gypsum materials. The 99.8% high fine powder recovery rate avoids waste of high-quality gypsum powder, and the dried plaster has stable bonding strength, helping customers occupy the high-end building materials market.
Case 3: 22T/H Phosphogypsum Recycling Project | Indonesia Chemical Enterprise
Project Info: The customer processes industrial waste phosphogypsum with high moisture and strong viscosity, which is difficult for traditional equipment to dry. Our customized anti-stick dryer realizes continuous and efficient drying, and the energy-saving waste heat circulation system greatly reduces operating costs. The recycled gypsum is used for wall material production, realizing green environmental protection and resource reuse.
Technical Parameters of Gypsum Dryer
| Spec | Inner diameter of cylinder (mm) | Tube length (mm) | Slope(°) | Speed (r/min) | Motor Power (Kw) | Capacity (t/h) | Inlet temperature (℃) | Weight(t) |
| Ф1.0X10m | 1000 | 10000 | 2.5 | 3.4 | 4 | 0.6~1.8 | ≤700℃ | 5.6 |
| Ф1.2X12m | 1200 | 12000 | 2.5 | 3.4 | 11 | 0.8~2.5 | 15 | |
| Ф1.5X14m | 1500 | 14000 | 2.5 | 3.4 | 15 | 1.8～4 | 19.6 | |
| Ф1.8X15m | 1800 | 15000 | 2.5 | 4.04 | 18.5 | 2.8～6.5 | 25 | |
| Ф1.8X20m | 1800 | 20000 | 2.5 | 3.1 | 22 | 5～8 | 32.2 | |
| Ф2.0X18m | 2000 | 18000 | 2.5 | 3.16 | 30 | 6～10 | 38.8 | |
| Ф2.2X20m | 2200 | 20000 | 2.5 | 3.68 | 37 | 6.5～11 | 47 | |
| Ф2.2X22m | 2200 | 22000 | 2.2 | 2.9 | 37 | 7～12 | 50 | |
| Ф2.4X22m | 2400 | 22000 | 2.5 | 3.27 | 45 | 7.5～14 | 62 | |
| Ф2.6X24m | 2600 | 24000 | 2.5 | 3.2 | 55 | 8～17 | 72.5 | |
| Ф2.8X22m | 2800 | 22000 | 2.5 | 3.4 | 132 | 28～32 | 94 | |
| Ф3.0X28m | 3000 | 28000 | 2.5 | 3.2 | 75 | 32～36 | 105 | |
| Ф3.2X30m | 3200 | 30000 | 3-5 | 3.2 | 90 | 43～50 | 700-800℃ | 118 |
| Ф3.6X32m | 3600 | 32000 | 3-5 | 3.0 | 160 | 60～76 | 143 | |
| Ф4.0X36m | 4000 | 36000 | 3-5 | 3.0 | 200 | 82～90 | 189 | |
| Ф4.6X42m | 4600 | 42000 | 3-5 | 3.0 | 280 | 100～110 | 290 |
Note: Production capacity will vary with product composition and water content.
Get Custom Gypsum Drying Solution
Our professional Gypsum Dryer breaks through the technical defects of traditional gypsum drying equipment such as easy sticking wall, agglomeration and high-temperature activity failure. With core advantages of anti-stick self-cleaning, low-temperature activity protection, ultra-low powder loss and high energy efficiency, it provides stable and reliable drying and resource recycling solutions for global building material, chemical and power plant enterprises.
Contact us now to get free model selection, gypsum-type customized solution and accurate project quotation!
FAQs of Gypsum Dryer
Q1: What types of gypsum can this dryer process?
A: It adapts to all mainstream industrial gypsum materials, including natural gypsum ore, power plant desulfurization gypsum, chemical phosphogypsum and building plaster powder. It is a professional dedicated drying equipment for gypsum resource recycling and deep processing.
Q2: Will high-temperature drying cause gypsum activity failure?
A: No. We adopt exclusive low-temperature gradient mild drying technology (60-130℃) for heat-sensitive gypsum. It avoids high-temperature decomposition of gypsum crystals, completely retains the gelling and bonding performance of hemihydrate gypsum, and ensures qualified finished product strength.
Q3: How to solve the problem of gypsum wall sticking and agglomeration?
A: Equipped with customized anti-stick self-cleaning structure and deagglomeration lifting plates. It continuously scrapes sticky materials and breaks clusters during operation, eliminating drying dead zones and material accumulation, realizing full uniform drying of viscous gypsum.
Q4: What is the adjustable moisture range of finished gypsum?
A: The finished gypsum moisture can be freely adjusted between 3%-8%. The conventional standard for building materials is 3%-5%, with loose texture and no secondary agglomeration during storage, fully meeting various industrial production requirements.
Q5: Is the fine gypsum powder easy to lose during drying?
A: Almost no loss. Equipped with a complete set of high-precision powder recovery and dust removal system, the comprehensive recovery rate is as high as 99.8%, which maximizes the utilization rate of waste and high-quality gypsum raw materials.
