As a subsidiary of CPEG, additional thermal and dry solids processing and material handling equipment is available to supplement and build out your production line.

Dust Collectors, Wet Scrubbers, Conveyors, Mixers, Drum Dryers, and more.

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Coal & Fly Ash Beneficiation


From ready-mix concrete, concrete bricks and blocks, grout, cement and asphalt to structural mineral filler and soil stabilization, rely on us to process coal combustible products like fly ash for beneficial reuse.


Heyl Patterson’s rotary dryers and calciners recycle, reclaim, and reuse fly ash by encapsulating it into higher quality, more marketable products, such as construction and building products.


Coal ash is a by-product of coal combustion, formed when coal is burned for power generation and industrial applications. Learn about the types of ash produced and the drying equipment used to process it.

  • Inconsistent moisture levels impacting downstream handling
  • Poor heat distribution causing incomplete drying
  • Dust carryover and material loss
  • Plugging and buildup in sticky ash streams
  • Equipment wear from abrasive mineral content
  • Temperature variability affecting product quality
  • Bottlenecks in beneficiation or carbon reduction lines
  • High maintenance associated with non-specialized systems

Coal and fly ash processing requires controlled moisture reduction, uniform heat distribution, and equipment built to withstand abrasive, fine, and high-volume materials.

Heyl Patterson Thermal Processing designs rotary dryers, rotary coolers, rotary calciners, and engineered thermal systems used in coal combustion byproduct management and fly ash beneficiation workflows.

Our heavy-duty rotary equipment support critical steps in fly ash drying, carbon reduction, conditioning, and preparation for infrastructure and industrial reuse.

Fly Ash Drying and
Moisture Control

Heyl Patterson Thermal Processing rotary dryers are designed to handle high-moisture ash streams while maintaining consistent product quality and flowability.

We deliver:

  • Uniform heat distribution for complete drying
  • Optimized airflow configurations for efficiency
  • Custom internals to prevent buildup and material carryover
  • Heavy-duty designs to handle abrasive mineral content

Thermal Conditioning
for Beneficiation

Fly ash beneficiation often requires precise thermal preparation to improve carbon content, performance characteristics, and downstream separation efficiency.

We support:

  • Moisture reduction prior to carbon separation
  • Thermal preparation for electrostatic separation
  • Carbon burnout optimization
  • Temperature stabilization for consistent processing
  • Conditioning for improved handling and storage

Coal & Ash Cooling
and Stabilization

After drying or calcination, maintaining the material’s temperature is essential for safe handling and storage.

Heyl Patterson Thermal Processing equipment supports:

  • Controlled cooling of processed fly ash
  • Stabilization prior to conveying and storage
  • Minimized dust generation during discharge
  • Even material distribution to prevent hot spots
fly ash piles
  • Precise control of residence time and heat transfer
  • Equipment engineered for continuous-duty operation
  • Systems that minimize dust carryover and material loss
  • Custom internals to optimize drying efficiency
  • Consistent moisture control for improved ash quality
  • Reduced operational cost through efficient heat utilization
  • Longer equipment life in abrasive applications
  • High reliability in 24/7 power and beneficiation operations
  • Improved downstream processing performance
  • System configurations tailored to plant layout and throughput
  • Custom flighting and internal lifter designs
  • Advanced sealing systems to reduce dust leakage
  • High-temperature construction options
  • Direct or indirect heating configurations
  • Engineered refractory and insulation systems
  • Heavy-duty shell and drive assemblies
  • Integration-ready designs for emission control systems

Beneficiation & Conditioning

  • Fly ash drying
  • Carbon reduction preparation
  • Thermal conditioning for improved performance
  • Moisture stabilization for storage and transport

Infrastructure & Industrial Reuse

  • Preparation for cement and concrete applications
  • Conditioning for structural fill
  • Processing for blended construction materials
  • Stabilization for environmental reuse projects

Coal Combustion Byproduct Management

  • Ash drying prior to landfill or reuse
  • Carbon burnout optimization
  • Temperature control before material handling
  • Thermal stabilization of fine particulate streams

Our thermal systems integrate seamlessly with:

  • Ash collection and handling systems
  • Electrostatic separators
  • Carbon separation technologies
  • Emission control systems
  • Material handling and conveying lines
  • Automated feed and discharge systems

Every system is custom-engineered to meet:

  • Moisture reduction targets
  • Residence time requirements
  • Heat transfer efficiency goals
  • Throughput and plant layout constraints
  • Dust management and environmental compliance needs

FAQ’s: Coal & Fly Ash Processing

Why is moisture control critical in fly ash processing?

Excess moisture can negatively impact storage, handling, separation efficiency, and suitability for cement and infrastructure applications. Controlled drying improves consistency and downstream performance.

How do rotary dryers handle abrasive fly ash?

Our rotary dryers are built with heavy-duty shells, custom flighting, and abrasion-resistant materials to withstand continuous exposure to mineral-rich particulates.

Can thermal processing improve fly ash quality for concrete use?

Yes. Controlled drying and conditioning can enhance flowability, reduce variability, and support consistent performance in blended cement applications.

How do you manage dust and emissions during ash processing?

Systems can be integrated with advanced sealing, airflow control, and emission treatment technologies to reduce dust carryover and maintain compliance.

What throughput ranges can your systems handle?

Heyl Patterson Thermal Processing designs rotary systems for both moderate- and very-high-capacity operations, customized to meet plant-specific production requirements.

filtered fly ash