Coal Slime Rotary Dryer

Industrial Anti-Stick Rotary Drying Machine for Sticky Coal Slime Waste Recycling

Our coal slime rotary dryer is professional industrial drying equipment specially developed for high-viscosity, high-moisture coal slime waste from coal washing plants. Adopting upgraded anti-stick rotary drum and low-temperature gradual drying technology, it completely solves coal slime caking and wall-sticking problems. It stably reduces coal slime moisture from 45%-55% to standard 8%-12%, turning waste slime into high-calorific industrial fuel. It supports 24-hour continuous unmanned operation, being core equipment for coal mine waste resource recycling.

Anti-Stick Host

Explosion-Proof

PLC Control

+86-19103863728

[email protected]

+86-19103863728

[email protected]

What is Coal Slime Rotary Dryer?

Coal slime is a fine-grained sticky by-product produced during coal washing and mineral processing. It features ultra-high moisture, strong viscosity, fine particle size and easy agglomeration. Fresh coal slime cannot be directly burned or stored; it is prone to mildew, leakage and environmental pollution during stacking, and has long been treated as waste residue in coal mines, causing serious resource waste and land occupation.
Traditional ordinary dryers cannot adapt to sticky coal slime materials, which easily cause serious wall sticking, material blockage, uneven drying and low output. Our upgraded coal slime dedicated rotary dryer is optimized with special anti-stick lining, material breaking and scattering structure. The low-temperature gentle drying process avoids slime caking and thermal loss. After drying, coal slime has loose texture, uniform moisture and high calorific value, which can be directly used for power generation, industrial boiler combustion and coal blending sales, realizing high-value recycling of coal mine waste resources and creating huge economic benefits for enterprises.
What is Coal Slime Rotary Dryer?
Contents

Complete Equipment Composition of Coal Slime Rotary Dryer

1. Special Anti-Stick Rotary Drum Host (Core Part)

Dedicated rotary drum structure for coal slime, equipped with customized anti-stick alloy lining and combined lifting and breaking plates. Different from ordinary dryer single lifting structure, it integrates material scattering, breaking and flipping functions. It continuously crushes agglomerated coal slime during operation, completely solving the industry pain point of sticky coal slime wall sticking and accumulation, ensuring full heat exchange and uniform dehydration.

2. Low-Temperature Constant-Temperature Heating System

Supports multiple safe and clean heating sources including biomass hot air stove, natural gas and industrial steam. Adopts low-temperature circulating hot air drying mode, with stable and adjustable internal temperature. It avoids high-temperature hardening of coal slime and dust explosion risks, meets coal mine safety standards, and ensures consistent drying quality of finished products.

3. Quantitative Feeding & Pre-Breaking Device

Equipped with special sealed screw feeder and pre-breaking mechanism for bulk coal slime. It quantitatively and evenly sends massive sticky coal slime into the drum, breaks large agglomerated slime in advance, prevents feeding blockage, and lays a foundation for uniform drying of subsequent materials.

4. Multi-Stage Dust Removal & Sealed System

Coal slime produces fine dust during drying. The equipment is equipped with cyclone dust collector + bag dust removal dual system, with fully sealed feeding and discharging structure. It completely collects fine coal dust, realizes zero dust overflow, complies with mine environmental protection emission standards, and improves raw material utilization rate.

5. Intelligent PLC Constant Temperature Control Cabinet

Intelligent automatic control system, supporting real-time adjustment of drum rotating speed and hot air temperature according to slime moisture. It has over-temperature protection, fault alarm and automatic shutdown functions, realizing 24-hour unmanned safe operation, reducing manual operation cost and improving production stability.

Complete Equipment Composition of Coal Slime Rotary Dryer

Core Product Advantages of Coal Slime Rotary Dryer

1. Professional Anti-Stick & Anti-Caking Core Design

Aiming at the strongest viscosity characteristics of coal slime, the equipment is upgraded with multi-angle combined scattering plates and anti-stick lining. It continuously stirs, breaks and scatters coal slime in the drum, completely avoiding material adhesion, wall hanging and blockage. No manual cleaning is required during operation, solving the biggest pain point of traditional coal slime drying equipment.

2. Low-Temperature Gentle Drying & No Quality Damage

Adopts low-temperature circulating hot air gradual drying technology, which slowly evaporates internal and surface moisture of coal slime. It avoids high-temperature hardening, pulverization and calorific value loss of coal slime. The finished coal slime is loose and uniform with stable combustion performance, ensuring high industrial utilization value.

3. High Drying Efficiency & Large Output

The optimized internal material flipping track prolongs the heat exchange time of coal slime. The one-time continuous drying process realizes thorough dehydration of high-moisture slime. Compared with traditional drying equipment, the output is increased by 25%-30%, which can fully meet the large-scale waste slime disposal needs of coal washing plants.

4. Significant Resource Recycling Benefits

It converts waste coal slime with no utilization value into high-quality fuel raw materials. The dried coal slime has stable moisture and high calorific value, which can be used for self-use power generation, boiler combustion and external sales, greatly reducing coal mine waste disposal costs and improving overall economic benefits of the enterprise.

5. Environmental Protection & Zero Dust Pollution

Fully sealed overall structure + multi-stage dust removal system effectively controls fine coal slime dust overflow. It solves the environmental pollution problem caused by coal slime stacking and drying, meets global mine environmental protection standards, and realizes green and clean production.

6. Stable Operation & Low Maintenance Cost

Industrial heavy-duty rotary drum structure, thickened wear-resistant and anti-corrosion materials, strong impact resistance. The vulnerable parts have long service life, simple daily maintenance and low failure rate, supporting long-term 24-hour high-load continuous operation of coal mines.

Core Product Advantages of Coal Slime Rotary Dryer

Working Principle & Production Process of Coal Slime Rotary Dryer

Working Principle

The coal slime rotary dryer adopts professional low-temperature circulating gradual drying principle for sticky fine-grained materials. Bulk wet coal slime is evenly sent to the pre-breaking device through the sealed feeding system to break large agglomerations. Then the materials enter the special anti-stick rotary drum. With the slow rotation of the drum, the combined lifting and breaking plates continuously flip, scatter and break the coal slime, forming a uniform floating material curtain. The materials fully contact with circulating low-temperature hot air to realize layered dehydration. Surface moisture and internal moisture are evaporated step by step to avoid caking. Water vapor and fine dust are purified and discharged through the dust removal system, and the loose dry coal slime with stable moisture is discharged to complete the whole drying process.

Standard Production Flow

Wet Coal Slime Feeding → Pre-Breaking & Dispersion → Rotary Drum Low-Temperature Gradual Drying → Continuous Scattering & Dehydration → Dust Removal & Purification → Dry Coal Slime Discharging → Fuel Utilization / Storage / Sales

Working Principle & Production Process of Coal Slime Rotary Dryer
Working Principle & Production Process of Coal Slime Rotary Dryer 02

Application Scenarios of Coal Slime Rotary Dryer

This anti-stick coal slime rotary dryer is specially customized for coal mining and coal washing industry, mainly used for drying high-viscosity waste coal slime produced by coal washing plants, coal preparation plants and coal mines. It solves the problems of difficult drying, easy pollution and low utilization rate of coal slime waste residue. The dried coal slime can be used for thermal power generation, industrial boiler fuel, coal blending production and other fields, realizing waste reduction, harmless treatment and resource reuse of coal slime.
Core Application Fields: Coal washing plant slime recycling, coal mine waste residue treatment, thermal power plant fuel pretreatment, industrial boiler fuel processing, coal resource comprehensive utilization project
Application Scenarios of Coal Slime Rotary Dryer
Application Scenarios of Coal Slime Rotary Dryer 02
Application Scenarios of Coal Slime Rotary Dryer 03

Real Project Cases of Coal Slime Rotary Dryer

Case 1: 10T/H Coal Slime Drying Project | Kazakhstan Coal Washing Plant

Project Info: The customer is a large local coal washing plant with a large amount of waste coal slime piled up all year round, with an average moisture content of 52%. Traditional equipment cannot solve slime sticking and caking problems. Our customized anti-stick coal slime rotary dryer is adopted with natural gas heating. After drying, the coal slime moisture is stably controlled at 10%, with loose texture and high calorific value, which is fully used for factory self-power generation, saving a lot of fuel costs for the enterprise.

Case 2: 6T/H Coal Slime Recycling Project | Ukraine Coal Mine

Project Info: Aiming at the problem of environmental pollution caused by long-term stacking of coal slime in coal mines. The project adopts our high-efficiency coal slime dryer, which completely solves the pain points of material blockage and wall sticking. The dried qualified coal slime is sold as commercial fuel, turning waste into treasure, bringing continuous additional economic benefits to the coal mine, and realizing green environmental protection production.

Case 3: 15T/H Large Coal Slime Drying Line | India Coal Preparation Plant

Project Info: Large-scale coal slime centralized treatment project. Equipped with industrial-grade heavy-duty coal slime rotary dryer, supporting 24-hour uninterrupted operation. The equipment runs stably with no wall sticking or blockage. The output dry coal slime is supplied to local power plants in batches, with stable product quality and high market recognition.
Real Project Cases of Coal Slime Rotary Dryer
Real Project Cases of Coal Slime Rotary Dryer 02

Technical Parameters of Coal Slime Rotary 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 Coal Slime Drying Solution

Our professional coal slime rotary dryer is tailor-made for high-viscosity coal slime waste of coal mines. With core anti-stick and anti-caking advantages, low-temperature safe drying and high recycling value, it perfectly solves various pain points of traditional coal slime drying. It helps global coal enterprises realize harmless treatment and high-value utilization of coal slime waste, reduce environmental pressure and increase new profit growth points.
Contact us now to get free equipment quotation, customized model selection and professional coal slime recycling project solution!
Get Custom Coal Slime Drying Solution

FAQs of Coal Slime Rotary Dryer

Q1: Why ordinary rotary dryers are not suitable for coal slime?
A: Coal slime has ultra-high viscosity and fine particle size. Ordinary dryers have simple internal structure, which cannot break agglomerated slime, resulting in serious wall sticking, material accumulation and thorough caking. Our professional coal slime rotary dryer is equipped with customized anti-stick lining and material breaking structure, specially adapted to high-viscosity slime characteristics, which is the only stable and efficient drying solution for coal slime.
Q2: Can this dryer completely solve coal slime wall sticking problem?
A: Yes. The equipment adopts three major anti-stick designs: anti-stick alloy drum lining, multi-angle scattering breaking plates and low-temperature gradual drying process. It continuously disperses sticky coal slime during operation, no material accumulation or wall hanging, no manual cleaning required, realizing automatic and continuous production.
Q3: What is the standard moisture of dried coal slime?
A: For power generation combustion and commercial sales, the optimal moisture of coal slime is 8%-12%. Within this range, the coal slime is loose and easy to burn, with high calorific value, no secondary caking during storage, and fully meets industrial fuel standards.
Q4: Is the coal slime drying process safe?
A: Very safe. The equipment adopts low-temperature circulating drying mode without high-temperature open flame. Equipped with dust removal, over-temperature alarm and explosion-proof devices, it effectively avoids coal dust explosion and spontaneous combustion risks, fully meeting coal mine safety production specifications.
Q5: Can the equipment run continuously for coal mine large-scale production?
A: Absolutely. Industrial heavy-duty body and upgraded anti-blockage structure support 24-hour uninterrupted high-load operation. It is specially designed for long-term continuous disposal of massive coal slime in coal washing plants, with low failure rate and high production efficiency.

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