Request a callback

Transform the profitability of your sand washing plant

Request a callback

If your plant operates with a Classifying Tank and Sand Screw you may have been frustrated by:

  1. The loss of quality material to your settling ponds.
  2. High moisture content of your final sand product (23-25% moisture).


Quantifying the loss

In a recent article, published by Pit & Quarry, Lane Southard quantified what this loss means to an operation.

He outlined the example of a 200-tons-per-hour sand washing plant, operating for 2,000 hours per year. 

Therefore 400,000 tons produced per year.

He conservatively estimated the fines loss from sand screws to be at least 2.5 percent of production.

This equates to 5 tons per hour or 10,000 tons per year.

Assuming a price per ton of $10, the typical sand screw operation is losing $100,000 of quality sand to settling ponds. 

For operators that re-process this material they could lose an average of two days production per quarter, which equates to a loss of 12,800 tons of sand production per year or $128,000.

That's a lot of quality sand and revenue.

Click below to request the full article by Lane.

Estimate your revenue gain and waste disposal saving with the EvoWash ROI Tool Kit.

Included in the Tool Kit:

1. Wet Processing Evolution: Making a case for the use of hydrocyclones to maximize the efficiency of aggregate production.

Lane Southard, Pit & Quarry, November 2016.


2. Sand Washing Solution: A washing plant becomes a profitable solution for a North Carolina sand-and-gravel producer.

Megan Smalley, Pit & Quarry, September 2016.


3. EvoWash vs. Sand Screw - Potential Gross Revenue Gain and Waste Disposal Saving Calculator.


Send me the EvoWash ROI Tool Kit

These issues can be resolved and the output of your plant transformed with the CDE EvoWash.


The EvoWash hydrocyclone technology:

  1. Guarantees removal of the minus 200 mesh fraction while retaining all quality fines in your final sand product.
  2. Maximizes dewatering to 12-15%, so your sand is ready to sell straight off the belt.


Material enters the top of the cyclone and is subjected to centrifugal force. The cyclone set up is specificed after extensive material testing.

The force within the cyclone spearates the minus 200-mesh material from your quality sand product and gives you the capability to control your cut point.

The finer material exits the overflow at the top of the cyclone with the waste-water, and this is sent to settling ponds.

The sand fraction exits the cyclone at the bottom, ready for dewatering and stockpiling.

The EvoWash comes with a CDE patented Infinity screen as standard. This enables the production of sand with moisture content typically in the 12 to 15 percent range.


The EvoWash mode of action:

  • Eliminates the loss of quality fines to settling ponds.
  • Maximizes product yield.
  • Minimizes operational costs as a result of not having to clean out and re-process materials from the ponds regularly.
  • Reduces the space required to accommodate settling ponds, as only the waste fines are being sent to the ponds rather than quality sand.
  • Maximizes the commercial value of your sand as you can set up the cyclone configuration to guarantee production of sand specifications in line with you or our customer's requirements.
  • Produces sand that is ready for market straight from the belt so you can sell it immediately, use it for downstream processes immediately, eliminate the area required for stockpiling the sand for further dewatering and eliminate double handling of materials.

Switching to the EvoWash can also offer reductions in:

  • Health & Safety costs - EvoWash walkways, easier maintenance access, better guarding, drier site due to dewatering screen.
  • Wear par costs - PU panels and cyclone apexs are easier to change than shoes on a sand screw's spirals.
  • Site equipment maintenance costs - due to the dewatering screen creating a drier site and keeping wheel loaders drier.

Estimate your revenue gain and waste disposal saving with the EvoWash ROI Tool Kit.

[Case study] How Matthew Sand & Gravel Tripled Production


In other recent article published by Pit & Quarry Megan Smalley reported on how Matthew Sand & Gravel, N.C., tripled production with its CDE M3500 Wash Plant.

At the heart of this result was the EvoWash, which solved the issue of not enough product yield to meet customer demand. 

Tony Gandy, Plant Manager, said, "At the end of most days, we would only have a knee-high pile of sand. We had to work about three extra shifts a week to get enough sand."

In addition to producing a better end product Gandy reported that production levels tripled from 1,000 tons of raw material per day to 3,000 tons per day.

He added, "We're selling more sand here than we've ever sold in our history. Obviously without this plant, we couldn't keep up."

Click below to get a full copy of the Matthew Sand & Gravel Pit & Quarry article.

Estimate your revenue gain and waste disposal saving with the EvoWash ROI Tool Kit.

Thank you for choosing to request a callback.

Please fill in the short form below and we will get back to you shortly

Please tick box if you would like to keep up to date with all the latest product news, events and projects from CDE Global.*