FEECO Rotary Kilns

FEECO is a leading manufacturer of highly engineered rotary kilns for processing solids. Our high temperature kilns have earned a reputation for their durability, efficiency, and longevity. System options include:

  • Parallel or Counter Current flow
  • Optimized Refractory Lining Solutions (multiple layers, castable, brick)
  • Direct-Fired or Indirect-Fired
  • Various Drive Assemblies Available



In addition to the rotary kiln itself, FEECO can supply a complete system with services, including:

  • Material Handling
  • Agglomeration
  • Drying
  • Afterburner / SCC
  • Quench Tower
  • Baghouse / Scrubber
  • Acid Gas Removal
  • Product Cooling
  • Field Assistance / Installation
  • Field Assistance / Start-up

Rotary Kiln Construction

Direct-Fired Kiln

The image below shows the standard components of a direct-fired rotary kiln. Click image to view larger.

Mechanical Construction of a Rotary Kiln (3D Rotary Kiln by FEECO International)

Rotary Kiln Components & Parts

A – Discharge Breeching

B – Riding Ring/Tire

C – Refractory Lining

D – Drive Gear Guard

E – Counter Current Exhaust System

F – Inlet Chute

G – Inlet Breeching

H – Leaf Seal

I – Drive Base

J – Drive Chain

K – Pinion/Drive Sprocket

L – Pillow Block Bearing

M – Gear Reducer

N – Girth/Driven Sprocket

O – Drive Motor

P – Trunnion Base

Q – Drum Shell Riding Ring

R – Graphite Block Lubrication Assembly

S – Trunnion Wheel

T – Trunnion Guard

U – Pillow Block Bearing

V – Thrust Roller Assembly

W – Discharge Chute

X – Burner

Download our FREE Rotary Kiln Design Handbook

Download the FREE Rotary Kiln Design Handbook

Indirect-Fired Kiln

The image below shows the standard components of an indirect-fired rotary kiln. Click image to view larger.

Mechanical Construction of an Indirect Rotary Kiln (3D Indirect Rotary Kiln by FEECO International)

Indirect Kiln Components & Parts
A – Material Inlet

B – Drive Gear Guarding

C – Riding Ring

D – Heat Shroud

E – Exhaust Vent(s)

F – Air Seal

G – Spring/Leaf Seal

H – Seal Mounting Flange

I – Seal Wear Surface

J – Discharge Breeching

K – Gas and Air Piping

L – Burners

M – Advancing Flights

N – Inlet Breeching


Rotary Kiln Applications & Materials

Applications for rotary kilns continue to grow to meet new processing needs. Some of the most common applications for rotary kilns include:

  • Recovery from Waste (Metals, Lime)
  • Sintering/Glassification (Proppants, Ceramics)
  • Calcination (Gypsum, Bauxite, Calcium Carbonate)
  • Upgrading (Phosphate Ore)
  • Thermal Desorption and Combustion (Organic Impurities, Hazardous Wastes)
  • Organic Combustion (Organic Wastes)
  • Heat Setting (Roofing Granules)

Rotary Kiln Project Profiles

Calciner Resource Recovery System

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Rotary Kiln Photos


Rotary Kiln Articles

Why Choose FEECO?

The advantages to a FEECO rotary kiln are that it is built to the highest quality standards and is backed by over 60 years of process design experience. The FEECO Innovation Center offers batch and pilot scale kilns that can simulate conditions in continuous commercial rotary kilns, allowing our customers to test small samples of material under various process conditions, as well as part of a continuous process. With options in both co-current and counter-current flow, and direct or indirect configurations, the FEECO test kilns offer a variety of options to suit your thermal testing needs. We also offer support equipment such as a combustion chamber, afterburner, baghouse, and wet scrubber for testing.

Our Commitment to Quality
Quality-RibbonOur company was founded on the idea that we could do things better; that if we put our minds to it, we could produce the best in industrial processing equipment.