Ortner® Sand Classifier is a Very Diverse Machine

03.16.15 | Aggregate, General, Mining, Ortner

There are many ways to remove the fines from sand and crushed stone. Sand screw classifiers, classifying tanks, hydrocyclones, wet screens, log washers and jigs all have their place in sand washing operations, but none of them compare to the the Ortner® Washing System.

The Ortner® can handle any size material, from a very fine mason sand all the way up to the de-dusting of 3″ rocks. You don’t need separate machines to wash your various sand sizes if you own an Ortner®. This one machine can do it all.

ORTNER 4000 010

3 Advantages of the Ortner®

There are many benefits of the Ortner® that make it a better solution than any other sand classifying product, period.


1. Less Water

The Ortner® has a very small weir section, which means the dust that you are trying to get rid of does not have a chance to settle out before being swept away with the wash-water.  This simple solution allows the Ortner® to use about 1/3 the amount of water that a sand screw classifier would require. With less water needed, it prevents contamination and discharge to the environment, smaller settling ponds, and cost savings for local regulators.

2. Low Wear Characteristics

Unlike a screw classifier with an auger that churns through the stone and has a very frequent replacement rate, the Ortner® has a rotating pan on which the stone rides.  A curved plow captures the washed sand and guides it to a discharge hole in the center of the rotating pan. The pan on an Ortner® classifying system lasts 15-20 years! How many screw flights would you replace in that time?

3. Drier Product

ORTNER Dewatering under a SandScrewNot only does the Ortner® use less water to remove the fines from sand, it also produces a product that is very dry compared to sand made by any other flotation device on the market.  The rotating pan is equipped with a vibrator. As the material is rotated out of the weir section, the vibration allows any excess water to liberate from the sand and flow back down into the weir. No more sloppy stockpiles, this sand is ready to ship. The Ortner® works so well, it is often used to dewater the product from a sandscrew!

For the most economical, environmentally sound, and efficient way to wash all of your materials, including sand, crushed stone, gravel, street sweepings, specialty minerals, and slag, the Ortner® is the obvious choice. Learn more about how the Ortner® can make sand washing more efficient for your application.

Ready to request an equipment quote? Give our sales team a call at 717-656-2131 to get started or complete our online quote form.

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