The Eagle Iron Works Classifying Tank: Traditional and Semi-Portable.

Horizontal classifying is a very efficient and effective method for situations where high quality requirements to the sand products are key. Classifying Tanks, also called Water Scalping Tanks, can be used for these primary functions: scalping large amounts of water from a slurry feed; diverting excess particles from the main product; removing silt; retaining finer mesh sizes; and making multiple products from a single feed.

Why select a Classifying Tank for your operation

The working principle is that the feed material flows through the long tank where the sand is being separated by differences in settling velocity between coarse and finer particles. Depending on the total capacity of the machine, the sand is being separated in up to 11 different fractions.

A sophisticated tank control system then re-blends these fractions into the desired end products or half products. One tank can make two controlled products simultaneously and a third product contains the excess material.

The most significant difference to any other classification system is that the computer continuously monitors the feed material and will keep the end products in spec, also when the feed changes. Furthermore, the computer will always aim for the highest yield in the most valuable product.

The main advantages of the classifying tank are:

  • Fully accurate classification typically set within +/- 3%.
  • Consistent quality of the end products, also when fluctuations in the feed material occur.
  • Automatic yield optimization for the most valuable product.
  • Two end products are being made simultaneously.
  • Very energy efficient.
  • Extremely low maintenance.

Due to these advantages, Eagle Iron Works Classifying Tanks are being used in most high-level concrete projects like reservoirs for hydro-electric power plants and tunnel construction, but also in many aggregate plants all over the world. Through their dealer Syscom, Eagle Iron Works has supplied over 150 tanks into the European market.

Introducing the Mark X Control System

Eagle Iron Works recently introduced the Mark X control system, which is the ultimate in sand reblending systems. It has been designed and tested by a team of software engineers that fully understand the needs of customers to help maximize productivity.

A fully automated system, the Mark X continually monitors the tank’s activity and automatically adjusts station percentages, accordingly, maintaining the tight tolerances for typical construction sand specification. It can run single or multiple tanks with seven to 11 stations per tank and two to three valves per station.

The Mark X features a touchscreen interface that offers intuitive commands and provides all needed information. Real-time valve status indicators offer a look at what is happening inside the tank. When the valves are ready to release the material, simply tap on the valve on the screen to open it. The Mark X offers automatic and manual percentage adjustments to adapt to changing feeds and for stockpile calibration.

Semi-Portable Options

Semi-portable sand sections are ideal for producers with multiple sites.

Semi-portable sand sections are designed with a water scalping-classifying tank and two fine material washers. Semi-portable sand sections wash, dewater and classify material with a water scalping-classifying tank and two fine material washers that offer the same capabilities and capacities as stationary water scalping-classifying tanks and fine material washers.

Semi-portable sand sections come with their own structure that moves with them as your operation requires. There is no need to build a structure around the equipment each time you move it to a new site. The compact, sectionalized design of a semi-portable sand section makes it ideal for installations where height is a concern. It also allows for easy removal when the producer is finished at one site. Semi-portable plants can be lifted onto a trailer with a crane and transported to the new site.

Tripling production with Eagle Tank

Tucakhoe Sand and Gravel produces numerous aggregate materials, including concrete sand, various types of golf sands, and gravels used for drainage and landscaping. Based in a competitive market, Tuckahoe needs to produce high-quality materials at prices their customers can afford. However, with two small, aging plants, they were not able to meet their productivity goals, and sales were suffering.

“Production was the problem,” said Tuckahoe plant manager Ron Sutton. “We just weren’t able to increase inventory and maintain production and supply our customers.”

Tuckahoe did not have belt scales on their old plant, but Sutton estimates their production was under 100 tons per hour at times.

Eagle Iron Works supplied Tuckahoe with a new wash plant that includes two 10’ x 40’ Eagle Iron Works Classifying Tanks for separating and blending pre-screened material into three different products and two 54” x 34’ Double Screw Fine Material Washers for washing, classifying, and dewatering those products before stockpiling.

After installing the new Eagle Iron Works wash plant, Tuckahoe tripled their production to 300 tons per hour.

“The Eagle Iron Works Classifying Tanks allow us to fine-tune the products that we’re producing,” Sutton said. “If one of those products becomes too coarse, we can then put that extra material to the third product to keep an eye on it and maintain the quality we’re looking for.”

Leading Solutions for over 150 years

Eagle Iron Works’ experienced sales technicians can help you choose the right washing System for your operation. They will look at your raw material specifications and your production requirements to determine the correct size of machine to meet your needs.

Eagle Iron Works has been manufacturing reliable, heavy-duty washing equipment since 1872. With over 150 tanks supplied throughout Europe, they are proven throughout the market.

Associated Businesses

  • Des Moines, IO 50313