USED UNION PROCESS QL-25

Manufacturer Information
Union Process
Union Process manufactures industrial grinding, milling, and particle-size-reduction equipment, including Attritor grinding mills and circulation systems. Circulation Attritors are designed for wet grinding and dispersion applications in which a pumpable slurry is repeatedly circulated through a media-filled grinding chamber to achieve progressively finer and more uniform particle sizes.
This Union Process Model QL-25 was built in 2019 and includes a 27.5-gallon grinding tank and an approximately 250-gallon recirculation tank.
Description
Available for sale is a used 2019 Union Process Circulation Attritor System, Model QL-25, designed for continuous recirculating wet grinding, dispersion, and fine particle-size reduction.
The Attritor features a 27.5-gallon grinding tank and is driven by a 40 HP motor. The system includes an approximately 250-gallon recirculation tank equipped with an anchor stirrer and mixer, helping maintain product movement and consistency as material circulates through the grinding system.
Maximum stated pumping capacity is approximately 35 GPM, depending on the selected grinding media, slurry viscosity, solids loading, and other process conditions.
Electrical requirements are 460V, 60 Hz, 3-phase. Serial number is 190402, and the unit was built in 2019.
Potential applications include wet grinding and dispersion of coatings, inks, pigments, chemicals, minerals, metal oxides, and other compatible pumpable slurries requiring fine and consistent particle-size reduction.
Specifications

Specification
Details

Manufacturer
Union Process

Model
QL-25

Equipment Type
Circulation Attritor / Media Grinding System

Condition
Used

Year Built
2019

Serial Number
190402

Grinding Process
Wet Grinding / Dispersion

Grinding Tank Capacity
27.5 Gallons

Recirculation Tank
Approx. 250 Gallons

Recirculation Tank Agitation
Anchor Stirrer & Mixer

Attritor Drive
40 HP

Maximum Stated Pumping Rate
Approx. 35 GPM

Flow Rate Dependency
Grinding Media / Slurry Viscosity / Process Conditions

Electrical
460V / 60 Hz / 3-Phase

Primary Function
Fine Grinding / Dispersion / Particle-Size Reduction

Typical Applications

Wet grinding
Fine particle-size reduction
Pigment dispersion
Slurry processing
Media milling
Coating production
Ink manufacturing
Chemical dispersion
Mineral grinding
Metal oxide processing
Recirculation milling
Homogeneous particle-size processing

Products This Attritor System Could Be Used For

Paints and coatings
Printing inks
Pigment dispersions
Specialty chemicals
Mineral slurries
Metal oxides
Ceramic slurries
Carbon dispersions
Color concentrates
Electronic material slurries
Abrasive-compatible formulations
Other pumpable wet-process slurries

Actual product suitability, throughput, final particle size, and grinding time depend on feed particle size, slurry viscosity, solids loading, grinding-media material and size, product chemistry, circulation rate, temperature, and desired final specifications.
Frequently Asked Questions

What is the grinding tank capacity of the QL-25? The Union Process QL-25 has a stated 27.5-gallon grinding tank capacity.

Does the system include a recirculation tank? Yes. It includes an approximately 250-gallon recirculation tank equipped with an anchor stirrer and mixer.

What size motor drives the Attritor? The grinding system is driven by a 40 HP motor.

What is the maximum pumping rate? The stated maximum is approximately 35 GPM, although actual flow depends on grinding media, slurry viscosity, solids loading, and process conditions.

What types of materials can be processed? Potential applications include compatible coatings, inks, pigments, chemicals, minerals, metal oxides, and other pumpable slurries requiring wet grinding or dispersion.

Can Aaron Equipment assist with shipping and logistics? Yes. Aaron Equipment can assist with rigging and loading coordination, domestic and international freight, customs documentation, and logistics planning for the Attritor, recirculation tank, and associated system components.