Continuous Pin Mixers

The pin mixer is a horizontal continuous mixer. FEECO has been manufacturing high-quality pin mixers for over 65 years. Also known as a pin agglomerator, the pin mixer offers greater material densification than a disc pelletizer, and typically requires less binder. Whether you are conditioning a material, de-dusting, or micro-pelletizing it, our custom pin mixers are a preferred choice.


Pin mixers are an ideal continuous processing solution for ultra-fine materials, and mixing both solid and liquid feedstock components to create a homogenous mixture.


Material is fed into the pin mixer, while binder is continuously added at a specified rate. The high-speed spinning action created by the single rotor shaft affixed with rods (pins) thoroughly mixes the components and begins to form agglomerates as the material moves through the length of the mixer.


Pin Mixers are ideal as stand-alone pelletizing/agglomeration units, or as a method of pre-conditioning in a two-step agglomeration process involving a disc pelletizer or agglomeration drum.


  • Size: 10″ – 50″ (254 – 1,270mm)
  • Capacity: 200 lb/hr – 70 TPH
  • Full sweep pin design
  • Polished stainless steel liner to improve machine operation
  • Available custom configuration
  • Accurate feed ratios of powder to liquid for precise quality control
  • Accurate production rates
  • Custom designed control panel for housing controls

Optional Components

  • Zero Speed Switches
  • Raising Cover Assembly
  • Abrasion-Resistant Pin Coatings
  • Two Screw Feeders
  • Various Pin Arrangements
  • Variable Frequency Drive (VFD)
  • Heat Transfer Jacket

Automated with Rockwell Automation

All FEECO equipment and process systems can be outfitted with the latest in automation controls from Rockwell Automation. The unique combination of proprietary Rockwell Automation controls and software, combined with our extensive experience in process design and enhancements with hundreds of materials provides an unparalleled experience for customers seeking innovative process solutions and equipment.

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Pin Mixer Components and Parts

The image below shows the standard components of a pin mixer. Click image to view larger.

Mechanical Construction of a Pin Mixer (3D Pin Mixer by FEECO International)
360 view of a Pin Mixer

A – Spray Ports

B – Actuated Hinged Cover (Screw Jack)

C – Pin & Shaft Assembly

D – Discharge Chute

E – Abrasion Resistant Coating

F – Mixing Pins

G – Mixer Shaft

H – Jam/Locking Nut – High Grade

I – V-Belt Drive

J – Drive Motor

K – Integrated Screw Feeder

L – Material Inlet


Applications & Materials

Pin mixers are used in a variety of applications, including:

  • Coal Dust
  • Ceramics
  • Clay for cat litter
  • Compost
  • Fertilizers
  • Flyash
  • Gypsum
  • Humate
  • Inorganic Chemicals
  • Limestone
  • Organic Chemicals
  • Pigments
  • Proppants
  • Pulp & Paper Products
  • Minerals and Ores
  • Nickel Concentrates
  • Chicken Litter
  • Phosphates
  • Potash/Langbeinite
  • Poultry Manure
  • Sulfur
  • Synthetic Gypsum

What Can Agglomeration do for Your Material?

Agglomeration offers a variety of benefits. Among them, agglomeration allows you to:

  • Reduce Volume
  • Stabilize Mixtures During Handling
  • Eliminate/Reduce Dust Problems
  • Control Hardness
  • Reduce Packing, Storage and Transport Costs
  • Improve Product Performance
  • Improve Handling

To learn more about how agglomeration can benefit your material, see Why Agglomerate Your Material.


Project Profiles

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Pin Mixer Articles

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Why Choose FEECO?

FEECO’s pin mixers are backed by our rich history in agglomeration and material handling. We also offer a unique testing and tolling facility that allows us to run agglomeration feasibility tests to determine if your material will agglomerate, as well as what equipment is needed to create the desired end product

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.
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