– HORIZONTAL BATCH MIXING
INDUSTRIAL
TWIN SHAFT
BATCH mixer
Scott Equipment’s industrial twin-shaft mixer uses two counter-rotating shafts to rapidly blend powders, granules, pellets and other bulk materials. Paddle/ribbon and paddle/paddle agitator configurations provide fast mixing, uniform liquid incorporation, and repeatable batch quality.
Available in capacities from 1 to 1,500 ft³ with sanitary and custom configurations available.
PERFORMANCE SPECIFICATIONS
2
counter rotating shafts
30 SEC
MIX TIME
1-1,500 FT³
BATCH CAPACITY
2,000 FT³
MIXING CAPACITY
Available for testing in the Scott test lab facility
WHAT IS AN INDUSTRIAL TWIN SHAFT BATCH MIXER?
An industrial twin-shaft batch mixer is a horizontal batch mixer that uses two counter-rotating agitator shafts to rapidly blend dry and wet bulk materials. The opposing shafts create overlapping mixing zones that move material end-to-end and side-to-side, producing fast, uniform, and repeatable blends.
Twin shaft mixers are commonly used for powders, granules, pellets, feed ingredients, fertilizer, food ingredients, minerals, chemicals and other bulk solids where short cycle times, liquid addition and consistent batch quality are important.
WHY CHOOSE A TWIN SHAFT BATCH MIXER?
KEY ADVANTAGES INCLUDE:
Consistent CVs of 1-5%
Able to mix down to 10% of rated capacity
Capacities from 1 ft³ to 1500 ft³
Counter-rotating shafts
End-to-end and side-to-side mixing
Low-profile design
Smaller drive packages
exclusive!
Paddle/Ribbon Design
Scott Equipment’s paddle/ribbon agitator is effective because it combines two distinct mixing actions into a single agitator. Rather than relying solely on paddles or ribbons, the design provides simultaneous conveying, lifting, folding, and blending, resulting in faster, more uniform mixing with less energy and shorter batch times.
HOW DOES SCOTT’S TWIN SHAFT MIXER WORK?
HOW TWIN SHAFTS MOVE MATERIAL
Inside the mixer, two horizontal shafts rotate in opposite directions. Each shaft has Scott Equipment’s paddle/ribbon combination.
- The paddle/ribbon combination moves material from end-to-end and side-to-side.
- Creates a continuous, efficient movement of material across the mixer.
- Optional paddle/paddle design
RAPID, UNIFORM LIQUID INCORPORATION
Liquids are introduced through a top-mounted header pipe with multiple inlet ports for fast, uniform distribution.
- Optional liquid manifold box
- Available in a variety of header pipe and inlet port sizes
- Nozzles tailored to your material for consistent liquid addition
DISCHARGE FEATURES
Twin-shaft mixers can feature Scott Equipment’s full-length drop-bottom gates.
- Entire batch empties quickly and completely
- Minimal residue between batches
- NEW! ERD drop-gate design
- Slide gate, plug gate, pivot gate, and other discharge options available.
WHY CHOOSE A TWIN SHAFT MIXER?
Paddle/ribbon configurations can achieve mix times of approximately 30-90 seconds, depending on the application.
- Flexible batch sizes
- Liquid incorporation
- Low-profile design
- Fast Discharge
TWIN SHAFT MIXER APPLICATIONS
Common Applications
PET FOOD & ANIMAL FEED
Mix feed ingredients • Premixes • Pellets • Vitamins • Minerals • Liquid additives • Bird feed
FERTILIZER & AGRICULTURE
Dry fertilizer • Potash • Mineral blends • Grass seed • Soil compost
FOOD & BAKERY
Dry food ingredients • Bakery mixes • Cereals • Powders • Premixes • Nutritional ingredients
CHEMICALS & PLASTICS
Chemical powders • Plastic flakes • Granules • Pellets • Resins
MINERALS & BUILDING MATERIALS
Calcium carbonate • Gypsum • Quick lime • Cement ingredients • Concrete mixes
PHARMACEUTICALS & NUTRACEUTICALS
Vitamin premixes • Mineral supplements • Nutritional powders • Dry powders
PROCESSING SOLUTIONS IN ACTION
CHOOSE THE RIGHT TWIN SHAFT AGITATOR
Every Scott Mixer is matched to the ideal agitator configuration for your material application.
PADDLE/RIBBON
Combines lifting and fluidization from the paddles with end-to-end material movement from the ribbons.
- Broad bulk-density range
- End-to-end movement
- Mix times: 30-90 seconds
- Fast uniform blending
BEST FOR: POWDERS, GRANULES, FEED INGREDIENTS, FERTILIZER, BULK SOLIDS, VARIED BULK DENSITIES
PADDLE/PADDLE
Opposing paddles create a fluidized mixing zone while minimizing product degradation.
- Gentle product handling
- Serrated paddle option available for fibrous materials
- Fluidized mixing
- Uniform liquid addition
BEST FOR: PELLETS, COARSE GRAINS, COATED PRODUCTS, WET MIXING, FIBROUS MATERIALS
Not sure which agitator fits your process?
No guesswork required.
FAST, FLEXIBLE DISCHARGE OPTIONS
Scott Twin Shaft Mixers can be configured with full-length drop-bottom gates for rapid, complete batch discharge and minimal material retention. Slide, plug, pivot, and custom discharge configurations are also available to match your material and downstream process requirements.
DROP GATE
The drop gate opens fully to provide complete cleanout and rapid, unrestricted product discharge
Slide Gate
The slide gate is mounted on bearings for smooth, reliable operation and precise control of material discharge.
PLUG GATE
The hinged plug gate contours to the mixer tub, eliminating dead space for complete cleanout, efficient discharge, and minimal product retention
custom designed
Custom discharge gate options are available to match your material characteristics and application requirements.
Engineered for performance. Built for your process.
Contact Scott Equipment to find the right discharge gate configuration for your mixer.
TWIN SHAFT MIXER FAQs
What is a twin shaft mixer?
A twin-shaft mixer uses two counter-rotating agitator shafts to move and blend material throughout a horizontal mixing chamber rapidly.
How does a twin shaft mixer work?
Two shafts rotate in opposite directions, lifting, folding, and moving material end-to-end and side-to-side to create a fast, uniform blend.
What is the difference between a twin shaft and single shaft mixer?
A twin-shaft mixer uses two counter-rotating shafts to create a fluidized mixing zone, while a single-shaft mixer uses one agitator shaft. The best design depends on the material, capacity, and desired mixing action.
How fast does a twin shaft mixer mix?
Scott’s paddle/ribbon configuration can achieve mix times of approximately 30–90 seconds, depending on the material and application.
What capacity Twin Shaft Mixers are available?
Scott Equipment Twin Shaft Mixers are available in capacities from approximately 1 to 1,500 ft³.
Can a twin shaft mixer add liquids?
Yes. Fluidized mixing can provide uniform liquid application and coating across the material.
Can I test my material before buying a mixer?
Yes. Scott Equipment’s Test Lab includes production-scale mixing equipment to evaluate actual materials and process requirements.
Thorough mixing solutions from scott equipment
REQUEST A TWIN SHAFT MIXER QUOTE
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601 6th St NW
New Prague, MN
56071
info@scottequipment.com
Monday - Friday
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1-800-264-9519
(952) 758-2591
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Monday - Friday
8:00 am - 5:00 pm
US Central Time
Monday - Friday
8:00 am - 5:00 pm
US Central Time
FIND US
605 4th Ave NW
New Prague, MN
56071
info@scottequipment.com
1-800-394-2591
(952) 758-2591
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