Eagle Iron Works

Process Machinery is proud to represent the acknowledged premier manufacturer of Sand Washing and Classification Equipment in the world today.

Water Scalping Classifying Tanks
Water Scalping-Classifying Tanks DIALSPLIT and AUTOSPEC Controls
Portable & Semi-Portable Sand Sections
Fine Material Washers
Course Material Washers
Log Washers
Other Eagle Equipment

PMI has received sales awards from Eagle 10 of the last 13 years, several as the top dealer in the US.

A review of dependable sand classification equipment, low profile Portable and Semi-Portable Sand Plants, gear reducer drives, solid welded spirals and full-length curved Washer tub bottoms, proper feed locations, plus use of wear-resistant, Ni-Hard castings or urethane wear linings, reflect Eagle's leadership in design.

Process Machinery's product application knowledge, experience and construction capabilities along with meaningful Product Support after the sale, add true value to a producers opportunity to enhance profitability.

Here are some of the more popular Aggregate Beneficiation and Classification Equipment from Eagle. Please give us a call for more information.

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Two views of an EIW Water Scalping Classifying Tank

 

Producing Specification Materials

The Eagle Water Scalping-Classifying Tank was designed to meet federal and state aggregate specifications which are continually tightening. The function of the Eagle Water Scalping-Classifying Tank is to remove excess water and slimes, and classify material by removal of excess in certain sizes, and retention of fines.

Slurry containing sand is introduced into the Tank at the feed end. As the slurry flows to the opposite end, solids settle to the bottom. Because of the difference in weight of different mesh sizes, material is automatically classified as it settles. Coarse material drops out first, near the feed end. Materials are progressively finer along the length of the Tank. At each settling station along the bottom of the Tank there are valves for discharging sand into the multi-cell collecting-blending flume for selective reblending. From there the sand is discharged into a Fine Material Washer, or Washers.

Valve stations open to collecting blending flumes for selective reblending.

Hydraulically powered motors and switches in the Valve Bridge operate the valve stations to control the release of material into the blending flumes.

A Classifying Tank is capable of producing products that meet tight specifications by reblending only the desired sand fractions located throughout the tank. A classifying tank processes the specified product(s) by removing the excess sand fractions. The general strategy is to make a primary controlled product that uses the maximum amount of feed material while meeting product specifications. Excess particles that are diverted away from the primary product can then be made available to produce a secondary product. The excess sand fractions that are diverted away from the primary product, in some cases meet specialty products such as Masonry, Fill, and Golf Sand specifications. The "excess" particles for the secondary product can also be "fine-tuned" by diverting unnecessary particles to the residual product. An addition way to produce a controlled secondary product would be to split off a portion of the total available feed from the primary product. This process allows both the primary and secondary products to use the necessary sand fractions from the total available feed material. Excess sand fractions from either the primary and/ or secondary products would then be diverted to the residual product. The residual product or "third product" comprises of materials not used by primary or secondary controlled products as it passed through the tank.

Gradation of the feed material in many pits may vary considerably, resulting in fluctuations in the amount of material passing through each valve. Originally the only method of controlling the specifications for the sand was with our Standard Series, requiring taking frequent samples of the product, and then manually readjusting the metering splitter gates.

With modern technology, however, there are three control systems that will perform this task quite effectively.

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Eagle DIALSPLIT® and AUTOSPEC® Series Controls

Eagle Iron Works offers three types of controls:

• Eagle DIALSPLIT®,
• Eagle AUTOSPEC® III, and the
• Eagle AUTOSPEC® Mark V.

Of our three different controllers, there two basic ways in which they operate.

The simplest and easiest to use is the Percentage-type method used by the Eagle DIALSPLIT® Control.

The second controller type, used by the Eagle AUTOSPEC® III and Eagle AUTOSPEC® Mark V, uses timed batches to produce the desired products. The Timed-Batch Controllers set a specific amount of time each valve at each station can discharge in order to constitute a batch of product material. Each batch meets the desired specification.

DIALSPLIT® Control Operation

The DIALSPLIT® control uses a Percentage-Type method that allows an operator to dial in specific percentages, between 0 and 100%, of the particles settling at each station to be reblended into the desired products. Once set the DIALSPLIT® control will continue to dispense materials in the same proportions. This control works well in applications where the feed gradation is constant. The operator simply sets the control to divert a percentage of the excess sand particles away from the primary products. Product 2 is blended in same manner. As long as the percent of each station going to product one and/ or product two totals 100%, nothing will be directed to the third cell. If they equal less than 100%, the remaining materials will automatically go to this non-controlled product. See page for set up.

DIALSPLIT® CONTROL

The DIALSPLIT® control is easy to understand and operate. This controller uses a simple mechanical design that allows the operator to blend specific percentages, from 0 to 100%, of the sand fractions settling at each station in order to meet product specifications. For each three cell Water Scalping-Classifying Tank settling station there are two selector switches. These correspond to the two controlled products. After an initial run with 100% of the classified material discharged to product one, you compare the discharged product and individual station analysis to see where and what excess sand fractions need to be diverted from the primary product. Dial settings are progressively reduced on Product One and increased on Product Two until Product One is in desired gradation. Excess sizes in Product Two can be removed by diverting to the third cell of the collecting blending flume. The system then dispenses material in the proportions that are set. Should changes be required, a turn of the dial is the only work you do.

AUTOSPEC® Control Operation

The AUTOSPEC® type controls allow operators to hold their product specifications when they encounter variations in the gradation of their feed material. The AUTOSPEC® Controllers work by setting minimum and maximum discharge times (measured in seconds) for each valve at each station. The minimum timer settings ensure that only the necessary sand fractions are discharged in order to meet product specifications. By measuring the total time a valve discharges over a batch cycle, an approximation of the volume discharged is made. Because the total amount of material per station is known, an operator can set limits of how much material from each station will be delivered to each product. This is accomplished by setting the amount of discharge time for a particular valve. After a set timed amount of material has discharge from the desired stations the control will reset and begin discharging a new batch. Each batch meets product specifications. As the feed gradation changes, and therefore deposits more materials at specific station(s), the AUTOSPEC® Controllers will continue to deliver the correct proportions to the product material based on the timer settings at each station. Due to fact that most product materials are based on a specification range, a maximum timer is used to ensure that the maximum in-spec yield is delivered. Eagle Iron Works offers two types of AUTOSPEC® Controllers that have different amounts of automation capabilities.

The Eagle AUTOSPEC® III solid state sand reblending system provides tight product control by setting minimum and maximum limits on the amount of material allowed from each valve station, see page # for AUTOSPEC® explanation. With a convenient keypad entry system the operator can automatically initialize the batch timers, adjust timer settings, store the settings in the product library, and monitor messages from the AUTOSPEC® III's advanced error checking routine. With the push of a button, the AUTOSPEC® III may also be operated as a DIALSPLIT® control. The AUTOSPEC® III system is simple to work with and requires absolutely no computer programming. The controller features a simple setup procedure that allows the control to initialize its timers for 100% yield in the shortest possible batch time. This feature drastically reduces setup time and unwanted waste. Once the control is initialized, the operator can then produce a spec product by adjusting timer settings at the different tank stations to trim excesses of different sand fractions. When all settings for the primary and secondary products have been set, the operator can then store the settings in the product library for future use. Up to eight different product settings can be labeled and stored to allow producers the option of on the run product changes without elaborate settings changes.

AUTOSPEC® III CONTROL

AUTOSPEC® Mark V CONTROL

The AUTOSPEC® - Mark V is a computer-based system which tracks and regulates sand reblending to maximize yield from an Eagle Water Scalping-Classifying Tank and to produce a consistent Fineness Modulus. The system consists of a microcomputer managed programmable controller and appropriate software. The equipment is connected to sensing mechanisms at the settling stations of the Water Scalping-Classifying Tank, which allow the AUTOSPEC - Mark V to monitor feed gradation. The system then adjusts tank settings to maximize product specifications and available feed. Desired product is selected by the operator, and AUTOSPEC - Mark V calculates and sets the controls.

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Eagle Portable and Semi-Portable Sand Sections

The Eagle Portable Sand Section for aggregate plants was developed to produce fine aggregates to specification from a highly compact and mobile unit. These sections are complete plants consisting of a Water Scalping-Classifying Tank mounted over two Single Screw Fine Material Washers. Reblending material into spec product can be accomplished by using either the DIALSPLIT®, AUTOSPEC III® or AUTOSPEC®-Mark V control systems.

The Eagle Semi-Portable Sand Section was developed for use where low headroom, space limitations or other Considerations, such as stability, rule out use of a standard height Eagle Water Scalping-Classifying Tank. For example, the lowered center of gravity reduces rolling motion on barge-mounted plants. Function and performance is the same and DIALSPLIT®, AUTOSPEC III® and AUTOSPEC®-Mark V are available and can be mounted right on the plant.

Eagle Fine Material Washer

Eagle Iron Works Empty Double Screw Fine Material Washer

Operating

Conveying Material to the Stockpile

The EAGLE Fine Material Washer has three combined functions; dehydration, washing, and classification

The Eagle Fine Material Washer-Classifier-Dehydrator is designed to process material up to 3/8 inch in size. This unit has three combined functions, as the name implies. The primary action is the dewatering attained by conveying sands up an inclined tub which is of sufficient length beyond the water level in the machine to effectively remove free water from the sand product.

The second function of the machine is the washing of sand particles accomplished by the tumbling and rolling action resulting from the continuous rotating screw. This tumbling actions grinds grain against grain and removes the unwanted material coating the sand particles. This tumbling action also aids in dewatering materials by breaking the moisture film on the sand particles, which relieves the surface tension leaving the water free to drain from the material.

The third function of the machine is to provide classification control of the product. The Eagle Washer has been designed with a large settling area which is surrounded by adjustable overflow weirs to control the depth of head and overflow velocity of the waste waters. This settling area, together with the feed box and baffles, has been provided to retain the finer mesh particles.

To meet the needs of aggregate producers with multiple operations or aggregate producers who wish to set up operations near a job site, Eagle Fine Material Washer Classifier-Dehydrators are available mounted on wheels for portability. The Eagle Fine Material Washer-Classifier-Dehydrator is available in Single Screw and Double Screw models. The Double Screw Washer-Classifier-Dehydrator is designed for higher sand recovery and overflow water capacities

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Eagle Coarse Material Washer

EIW 36" Single Screw Course Material Washer This style washer is designed to scrub and clean gravel or crushed stone. They remove crusher dust, dirt, soft clays and lightweight contaminants. The paddles serve to keep the bed of material loosened. This allows unwanted materials of light specific gravity to break free of the material bed and be removed by the rinsing current of water. Sufficient quantities of water are used to wash the contaminants over the weir. The tub end features Eagle's trash remover design, which assists in the removal of lightweight contaminants.

The standard configuration uses four sets of paddles. More paddles can be used to increase scrubbing action with the tradeoff of less raking capacity and an increase in horsepower.

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Eagle Iron Works Log Washer

Scrubbing action of an Eagle Log Washer

After exhaustive tests in our "proving ground" and under actual operating conditions, on the job the compound gear drive for Eagle Log Washers was introduced. The two log shafts are driven through helical and spur gears as previously. A more positive, power-conserving drive is thus provided. Gears are totally enclose and run in an oil bath.

The Eagle Fabricated Gearbox assures the gears are always in perfect mesh and are kept free of dust and grit, thus eliminating wear on gears and contamination of lubricant. Far less maintenance will result. The motor is centrally located on top of gear housing, providing better balance.

Eagle Iron works provides many other types of equipment such as:

Singe and Double Screw Course Material Washers
Sloped Plate Clarifiers
Cyclones
Sol-Clay Washers
Blade Mills
Mixers
Swintek Dredging Ladders

and more!.

Please contact us for additional information.