Cold Feed Systems

Stands up to a Tough Environment

Astec cold feed and recycle units are built to give many years of service in demanding environments. All parts of the bins, from the bins themselves to the steel bulkheads and foundations, are fabricated to perform and stand up to front-end loaders and abrasive materials year after year.

Standard features - such as the protected walkway access at the backside of the belt feeders, steeper bins with better flow and cable trays - give you even more value for your money. We build every piece of our asphalt plants, including our bins, to be the most durable, productive and user-friendly you will find.

Features & Benefits

  • Astec manufactures stationary systems, relocatable modular systems and self-contained portable systems.
  • Bins constructed of 1/4 inch (.635 cm) steel plate
  • Steep walls and self-relieving bottom openings on Astec bins promote smooth flow and prevent bridging of materials
  • Variable-speed belt feeders allow changing the production rate while keeping the mix formula unchanged
  • All belt scales come with wind guards to maximize accuracy.

An Astec portable cold feed system

Portable Cold Feed Systems

The portable cold feed system can be set up without cranes in less than an hour, which saves considerable time and money. No concrete or asphalt foundations are required, only compacted soil able to bear 2,500 pounds per square foot (12,206 kg per m2). Comes with built-in bulkhead and wing walls.

An Astec relocatable cold feed system

Relocatable Cold Feed Systems

The Astec relocatable cold feed system is set in place on A paved site that has at least 2,500 pounds per square foot (12,206 kg per m2) soil bearing pressure. It is supported by its heavy-duty steel plate foundations. Modular construction eliminates on-site fabrication. Bulkheads and hinged wing walls are safer and eliminate expensive concrete bulkheads.

An Astec stationary cold feed system

Stationary Cold Feed Systems

Astec stationary cold feed systems come in A range of capacities to suit any production requirement. Stationary systems also offer lots of flexibility for future add-ons or alterations. Stationary cold feed bins are anchored to concrete foundations.

    Astec Cold Feed Systems

    For any style plant, Astec manufactures A durable, long-lasting cold feed system loaded with innovative labor-saving features.
    • Astec cold feed bins are designed with steep walls and a self-relieving bottom to encourage smooth material flow.

      Defend Against Impact And Abrasion

      We construct our cold feed bins of 1/4 inch (.635 cm) thick steel plate reinforced with stiffeners. Top edges of the bins are formed into channels for added strength.

    • Liners protect against wear while producing smoother material flow.

      Optional Liners

      Optional high-density polyethylene liners can be installed inside the bins for added wear protection. Liners also significantly reduce the coefficient of friction between bin walls and material, producing ultrasmooth material flow.

    • For added strength, the top edges of the bins are formed into channels.

      Assure Even Material Flow

      Steep walls and self-relieving bottom openings on Astec bins promote smooth flow and prevent bridging of materials. Heavy-duty bar grizzlies are available as an option. They are installed on top of the bins to scalp off oversized material and debris.

    • Dancing plate bin vibrators provide better material flow than common weld-on vibrators.

      Bin Vibrators

      We also offer optional dancing plate bin vibrators, which keep damp or caked-up materials from sticking to bin walls. The vibrator is installed on A hinged plate inside the bin to avoid shaking the entire bin.

    Astec Cold Feed Systems Are Built For Demanding Environments

    For any style plant, Astec manufactures a durable, long lasting cold feed system loaded with innovative labor-saving features.
    • No sheaves or belts on the Sumitomo drives means reduced maintenance time.

      Belt Feeders Give You Precise Control

      You can assure accurate mix formulas with Astec variable-speed belt feeders. They let you change the production rate while keeping the mix formula unchanged. Each feeder is powered by a variable speed motor with a Danfoss® controller and Sumitomo® right angle reducers. These drives provide precise control of belt speed.

    • Collecting conveyors collect material from all bins.

      Two Belt Feeder Choices

      Select either the traditional flat idlers or the troughing idler. With the traditional design, the belt is fully supported by four-inch (10.16 cm) diameter rollers on five-inch (12.7 cm) centers to prevent deformation of the belt and material spillage. The troughing idler belt is supported on nine-inch (22.56 cm) centers.

      Head pulleys on both are covered with rubberized traction material that makes firm contact and moves the belt without slippage.

    • All systems can accommodate options such as bar grizzlies.

      Collecting Conveyor Under Bins

      The collecting conveyor comes with the cold feed unit and runs under the belt feeders to collect material from all the bins. The tail section unbolts, then easily reattaches to the collecting conveyor extension when adding future bins. Its upturned end empties onto the scalping screen (if used) or onto the incline conveyor.

    • The inclined conveyor incorporates a scalping screen to remove oversized material.

      Inclined Conveyor Receives Material

      Inclined conveyors with vulcanized rubber belts take the aggregate from the cold feed unit to the facility’s drum mixer. Depending upon your type of facility, the inclined conveyor will be either relocatable, stationary or portable.

      Most often, the inclined conveyor incorporates a scalping screen at the front end. On portable units, a transfer conveyor is used as the deck selector on two deck screens. Pneumatically activated belt scrapers are standard on every Astec inclined conveyor.

    Quality Control

    Simplified sampling and quality control keep mix in spec, while an Astec system makes it easy to incorporate RAP into the mix. These features make protecting profits easier.
    • Keep track of how much material enters the drum with a load cell in the belt scale.

      Accurate And Reliable Belt Scales

      A load cell in the belt scale accurately indicates the weight of a section of belt running over a weigh idler. Load cell information, combined with the belt speed, shows how much material is entering the drum mixer. The scale includes a remote operated test weight for easy calibration. As material is run across the scale, a sample is routed to a truck via the cylinder operated drum bypass chute, then verified on a truck scale. All Astec belt scales come with wind guards to maximize accuracy.

    • Save money by collecting samples without stopping production with an Accu-Swipe Sweeper.

      Simplest Sampling With Accu-Swipe® Sweeper

      The optional Accu-Swipe automatic belt sweeper lets you take a full cross-sectional sample of aggregate from the inclined conveyor in less then a second. The production process does not stop for quality control sampling.

    • Incorporate a bypass chute to collect calibration samples.

      Bypass Chute

      The bypass chute is incorporated to collect samples for calibration or to divert aggregates to a waiting loader or truck during plant shut-down.