Astec, 250 TPH, 1982, Portable Asphalt Plant, Rebuilt 1999

Description

  1. Overview
    1. 1982 Astec 250-tph portable asphalt plant, rebuilt by Astec in 1999
    2. No model number as it has components from several different plant configurations
    3. Was running fine at shutdown; operator ran 240 tph at 15-20% rap
  2. Cold Feed System
    1. Four 10 ft x 12 ft bins with extensions and dividers on a single frame
    2. 32 in feeders, 9 ft long, driven by 5 hp dc motors
    3. Each feeder feeds across a 3 ft x 6 ft screen
    4. 30 in collector with 20 ft incline stinger powered by a 10 hp motor
    5. Cold feed system sits on adjustable legs
    6. Aggregates feed onto a 24 in wide, 56 ft long, heavy channel frame belt scale conveyor
  3. Portable Parallel Flow Drum
    1. Astec reworked in 1999, serial number 98264-9003, 5-99
    2. Astec portable tri-axle parallel flow recycle drum, 7 ft diameter and 41 ft long
    3. Center entry recycle collar
    4. Drum is trunnion driven by two 60 hp motors
    5. Slinger conveyor introduces materials into the drum
    6. Hauck jet burner burning natural gas
    7. Drum dries materials into a 10 ft x 30 in single shaft 60 hp pug mill coater
    8. Dryer assembly is self-erecting
  4. Portable Pollution Control
    1. Portable Astec direct pulse baghouse with 768 bags, 4 5/8 in diameter and 8 ft long
    2. Total of 8,042 square feet of cloth, effectively filtering 41,000 cfm of dust-laden air at a 6 to 1 air to cloth ratio
    3. All inlet and outlet duct work with an Astec size 442 fan, a 200 hp motor, inlet damper and stack included
    4. Dust removed from baghouse by a triple auger driven by a 5 hp motor each
    5. Newer 60 hp screw type air compressor provides the air
  5. Control House
    1. Relocatable control house is 10 ft x 20 ft
    2. Systems equipment controls were upgraded recently
    3. Win lc1000 silo load out controls
    4. Motor control center with all starters and breakers mounted on the rear of the baghouse assembly with soft starts for the drum, baghouse, burner and pugmill
    5. All s/o type wiring with quick disconnect plugs included
  6. Lime System
    1. 500 bbl lime silo with weigh pod and bin vent
    2. Feeds a pugmill systems model 300la twin shaft pugmill that feeds onto drum charging belt
  7. Liquid Asphalt System
    1. Single sellers electrically heated tank and ac metering pump included
    2. System includes all plumbing and unloading pump
    3. Has some skin issues
  8. Silo System
    1. Mix transferred from drum into a 76 ft x 24 in drag slat with a single 6 in pitch roller chain and 7 in deep slats and reject chute
    2. Single stationary 150 ton esstee silo
    3. Truck mate 10 ft x 70 ft low profile truck scale