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Remove Undesirable Fines From Aggregate

Quarries and aggregate producers use screening or wet wash systems as well as air classification
to remove undesirable fines and produce high quality sand for use in asphalt or concrete.
Wet wash systems can include dewatering screens, belt presses, hydrocyclones and wash screws.
The physical space required for properly sized settling ponds may not exist at a plant site or
the cost and time involved in maintaining settling ponds may be excessive. In addition, water
and its regulation is increasingly expensive and can be impossible to obtain especially in
remote areas. Washing methods can require excessive time, equipment and water, making
the process inefficient and uneconomical. An alternative that many producers have
successfully implemented for more than 100 years is the Sturtevant Whirlwind® Air Classifier.

PROVEN RESULTS

EXAMPLE OF LIMESTONE PERFORMANCE IN WHIRLWIND®
2.5% moisture

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The Sturtevant Whirlwind® Air Classifier

The Sturtevant Whirlwind® Air Classifier is specifically designed to effectively remove fines
from aggregates without screening or wet washing. The Whirlwind® will increase your
production capacity while maintaining quality standards, reduce maintenance time and
improve plant uptime.
The Whirlwind® Air Classifier is engineered for the rigors of aggregate separation and provides
our customers with a quality-built product with the long equipment life they demand. The
Whirlwind® Air Classifier has capacities up to 1200-tons per hour and offers an exceptional
ability to achieve a wide range of separations.


BENEFITS

The Whirwind’s® features allow precise definition of the desired size product
while delivering the following benefits :

1

Cost savings

No settling ponds, dredging or land restoration

2

Lowest capital cost

No auxiliary equipment needed, such as baghouse, screen, cyclones, process dust collectors, air locks, or system fans

3

Flexibility

Stationary and mobile units available

4

Stationary and mobile units
available

Low energy consumption and low maintenance

5

Built to Last

Proven long life span and wear resistant replaceable liners

6

Improved mixtures

Ideal for superpave applications

7

Sellable product

Sell dry fines for aglime, animal feed or fillers

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The Sturtevant Advantadge ! Sturtevant offers a global network of sales and service representatives serving customers and installations worldwide.
The company delivers the industry’s best service, experience
and reliability ensuring customer satisfaction and the competitive advantage they demand
Sturtevant has sold over 5,000 air classifiers making us the world’s most trusted supplier of air classification.

The Sturtevant Advantadge ! Sturtevant offers a global network of sales and service representatives serving customers and installations worldwide.
The company delivers the industry’s best service, experience
and reliability ensuring customer satisfaction and the competitive advantage they demand
Sturtevant has sold over 5,000 air classifiers making us the world’s most trusted supplier of air classification.

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SERVICE 

• All operations are under one roof which
results in fast,
reliable problem solving
• A fully equipped test facility to help customers determine
the best way to achieve fine particle size separation and
understand material characteristics
• A skilled field service team is available for start-up of new
equipment and field inspection of existing installations

EXPERIENCE 

• Sturtevant has been perfecting particle sizing for over 130
years with thousands of installations worldwide.
• Sturtevant employees average over 20 years of service
• Customer driven innovation, including more variety and
accessories than any other manufacturer

REABILITY

• Sturtevant is a family run business currently in its fifth
generation of family management
• Made in the USA with domestic manufacturing
• Over 60% of our sales are repeat customers

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Stationary Whirlwind® Air Classifier

• Simple construction, low maintenance
• No screens to wear, blind or tear

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Stationary Whirlwind® Air Classifier

• Eliminates the need for auxiliary equipment
• Energy efficient, saving time and money

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Mobile Whirlwind® Air Classifier

• Integral collapsible conveyors
• Fastest setup to process system available
• Compact design reduces transport costs
• Reduces cost of shipping manufactured sand

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Whirlwind® Performance

• Low capital cost
• Low energy consumption

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Mobile Friendly

• Built for 75 year service life and longer
• Handles any stone product with ease

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