Used 1999 EAGLE IRON WORKS 8' X 32' Sand Classifier Tank, 9 station, 3 cell collecting flume, Mark V Computer Controls, sub frame, painted with parts and operating manuals, F.O.B. Sylacauga, Alabama..$32,500.00 ...
Used Eagle Iron Works 36"x8' Portable Twin Shaft Pugmill Material Blending Machine. SN: 4980, rated at 350 to 750 TPH, powered by a Detroit Diesel 471 diesel engine, mounted on a single axle carrier with fifth wheel hookup, brakes, running lights, equipped with a 36"x8' twin shaft mixing chamber with a 5 yard batching hopper with hydraulic open/ close gate, New water spray bar system, New 11R 22.5 radial tires, hydraulic winch assist system for setup on jobsite, new paint, parts and operating manuals, The following item have been done to this equipment:
NEW TIRES, WHEEL BEARINGS GREASED, ALL BRAKE NEW FROM WHEEL HUB TO GLAD
HANDS, ELECTRICAL-PLUG IN TO BRAKE LIGHTS NEW, ALL TOP SHIVES BRAND
NEW, ERECTION CABLE BRAND NEW, WINCH HAS BEEN REWORKED, PADDLES 1/2 NEW OTHER
1/2 LIKE NEW, NEW SPRAY BAR SYSTEM WITH TIPS, GATE DOOR VALVE IS NEW
WITH HYDRAULIC CONTROL, MOTOR HAS BEEN SERVICED, NEW FUEL LINES TO TANK,
NEW STYLE CLOSE GEAR BOX HOLDS OIL AND ALL BEARINGS ARE GOOD, F.O.B. Sylacauga, Alabama..$39,500.00 ...
Coarse Material Screw Washer paddles are used in conjunction with screw flights to provide scrubbing, scouring and agitation. The turbulent washing action combined with the rising current water introduced at the bottom of the box from the feed end results in separation of the lighter fraction from the sound aggregate.
Lighter fractions, such as clay and floating vegetation, float to the surface due to the water rising in the box and then overflow the weir located in the back of the box. The resulting clean product is scrubbed and then conveyed by the paddles and flights to the discharge end of the box.
Information On Sand Screws or Dewatering Screws
Fine Material Screws/ Washers are especially useful if the application requires more retention time in order to hydrate materials. Most Sand Screws have designed its Fine Material Screw Washers with a longer screw shaft to provide a longer dry deck area, resulting in a drier product discharge. If an application calls for a greater level of dewatering, then they are often placed in series with a Dewatering Screen.
To achieve the desired results with a Fine Material Screw Washer, sand, or other fine material, is directed to the feed box in the baffle plate. Coarser, heavier materials sink to the bottom of the box, while finer waste fractions are carried by the up-current of water to the surface and overflow the weirs.
The heavier material that has sunk to the bottom is conveyed up an 18-degree slope toward the discharge end. The rolling and tumbling of the material releases fines and lightweight fractions into suspension; it also mildly scrubs superficial clays from the sand/mineral surfaces. As the material is conveyed toward the discharge end, the water begins to separate from the material.Most Sand Screws have designed an extra-long dry deck area, providing maximum dewatering of material. A channel is provided opposite the conveying side to allow water to drain from the material and return to the pool area.
Sand Classifying Tanks provide a simple way to remove excess water and slimes or undesirable grain sizes from natural or crushed sand feeds. They are typically used to classify sand by removing an excess of certain intermediate mesh sizes to retain finer mesh sizes and/or make multiple products from a single feed material.
Sand classification is based on the settling rate of various grain sizes. As water and material enter the feed end of the Sand Classifying Tanks , coarse sand grains settle first and finer grains settle in successive sizes down the length of the tank.
Hydraulic controls at the top of a Classifying Tanks operate discharge valves at the bottom of the tank. One, two or three discharge valves are at each station, depending on the type of control system and the product(s) produced. When the discharge valve opens, tank is directed to a two or three-way divided collecting flume and then to the associated dewatering equipment.