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GENERAL
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| ALmix DESIGN AND PRODUCTION:The
ALmix model 6626 Drum Mixer is of the parallel flow design and
includesa special herringbone
bolt-in
flight design for maximum drying and mixing efficiency, lower stack
temperature and reduced fuel consumption. This mixer is designed
to produce 70 - 140 TPH depending upon aggregate and moisture characteristics.
More specifically, the above plant is guaranteed to produce 120 TPH of 300°F
hot mix from material having an initial moisture content of 5%, at not more than
1,500 ft. above sea level. |
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 ALmix
DRUM MIXER: The 66” diameter x 26’ long drum is constructed
from 5/16” thick steel plate. The drum is trunnion driven
through four (4) shaft mounted reducers by four (4) 10 H.P. motors.
The main frame features unitized construction from heavy, structural
steel members with beams supporting the trunnions and drum. Four
(4) 12” diameter x 6” face trunnions are machined and
heat treated to 500 Brinell and are fitted with 2-15/16” diameter
spherical type roller bearings. Each trunnion assembly is mounted
on a 1” thick steel plate allowing the assembly to be adjusted
as a unit. The trunnions drive two 2” thick steel tires made
from one piece forgings. The drum shell is reinforced by 1/4” thick
steel bands in the area where the tires are wedged to the shell.
Two 12” diameter guide rollers are provided to insure the
proper operatingposition of the drum mixer assembly. The drum is
mounted at operating slope on the main frame, eliminating the need
for costly elevation on setup. Material
is discharged from the drum by bolt-on abrasion resistant steel sweeper flights
through a side discharge chute. An air seal constructed from high temperature
belting is installed between the drum and the discharge breaching. |
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ALmix SLINGER CONVEYOR: An 18” x 10’ long
slinger type inlet conveyor driven by a 3 H.P. motor through
a shaft mounted gear reducer receives aggregate from the collecting
conveyor and conveys it into the drum under the burner assembly.
This relatively high speed conveyor eliminates the plugging and
heat loss associated with normal inlet chutes. |
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| BURNER ASSEMBLY: The ALmix Model 6626 Drum Mixer
employs the Hauck StarJet burner assembly. The burner is capable
of burning any grade
of fuel oil, natural gas, liquid LP and combustible liquid waste.
The burner assembly includes a high efficiency, blower driven by
a 40 H.P. motor, automatic temperaturecontrol and flame safeguards.
The burner capacity is 40 MBTU/HR. The fuel pump is driven by a
1 H.P. motor. |
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ALmix POLLUTION CONTROL DEVICE: The pollution control
system includes an expanded discharge breaching on the drum mixer connecting
to the baghouse entry plenum. This large area assures fallout of area relatively
large asphalt coated particles prior to their entrance into the baghouse. The
duct work between the baghouse and the drum mixer is constructed from 3/16” thick
steel plate. Duct work connecting the baghouse to the exhaust fan is designed
to provide the minimum pressure drop. The Model 231 fabric filter type dust
collector is designed to handle 20,000 CFM at an air to cloth ratio of 5.9:1
and operating temperatures of 280-350°F. Bag design is of the double wall
type with 231 6” diameter x 7’ long bags yielding 3,764 sq. ft.
of cloth. The bags are constructed from 14 ounce NOMEX with 13% glass fiber to give better filtration on the sub-micron
particle sizes. The surface of the bag is singed prior to manufacture to insure
better cake release during the cleaning operation.
The bags and cages are designed for easy top removal through hinged gasketed
doors. |
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ALmix RETURN DUST SYSTEM: The integral bag collector maintains the
hopper design universally recognized as the most efficient and
economical method of disposing
of collected fines with minimal reentrainment. The baghouse hopper
section contains a 9” diameter auger driven by a 3 H.P. motor.
The auger delivers the collected dust to a 8” diameter, adjustable
tip, rotary vane feeder driven by a 1 H.P. motor and is connected
via a blow through adapter and flexible dust handling hose to the
drum mixer dust pipe. An in-line blower mounted on the baghouse
frame and driven by a 15 H.P. motor is connected to the other side
of the blow through adapter to convey the bag house fines to the
drum mixer dust pipe. |
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| ALmix EXHAUSTER: The pollution control system includes a high efficiency
backward inclined, high efficiency Model 300 exhaust fan with a
60 H.P. motor. The exhausteris supplied with an automatically controlled louvered damper and hinged, ported
stack. |
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| ASPHALT BLENDING SYSTEM |
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| ALmix GENERAL: The ALmix Model 6626 Drum Mixer
includes the ALmix Millennium Blending Control System. The heart of this control system is an IBM PC compatible
computer. The Millennium Control features a fully
graphic operator interface to provide complete plant status at-a-glance.
Millennium is a Windows based
system employing “point and click” technology. The
system retains information, system constants and scale calibrations
in case of power failure or power off conditions on a hard disk. |
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 ALmix FORMAT: Included in the system are two 17” VGA full color
monitors and a 101 key keyboard. The operator uses the monitor
to preset the percent of liquid asphalt desired in mix, percent
of reclaimed material desired in mix, percent of liquid asphalt
in reclaimed material, percent of mineral filler, percent of liquid
additive, separate start and stop delay times for AC injection,
liquid asphalt tolerance percent and aggregate moisture compensation
setting for each aggregate. The following items will be displayed
on the video monitor: aggregate TPH for each aggregate, aggregate
total TPH at point of asphalt injection, liquid asphalt TPH, recycle
TPH, mineral Filler TPH, liquid additive TPH, total mix TPH, desired
% of aggregates, mineral filler, liquid additive, recycle and liquid
asphalt, actual % of aggregates, mineral filler, liquid additive,
recycle and liquid asphalt, accumulated total tons of each aggregate,
accumulated total tons of liquid
asphalt, accumulated total tons of mineral filler, accumulated
total tons of recycle, accumulated total tons of liquid additive,
accumulated total tons of mix, incline conveyor FPM and liquid
asphalt temperature. |
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BLENDING EQUIPMENT:
The ALmix asphalt pump package consists of
a 2” jacketed,
positive displacement asphalt pump driven by a 5 H.P. motor through
an AC inverter drive. Following
the pump assembly is a jacketed, 3-way, air cylinder actuated
by-pass valve to pass asphalt to the drum (through the meter)
or recirculate
the asphalt to the tank. Next is a second jacketed, positive
displacement, asphalt pump which is used as a meter to monitor
the asphalt flow
rate. The accuracy and durability of this second pump complete
with optical encoder make it far superior to traditional asphalt
flow meters. Temperature compensation is accomplished through
the Millennium Control System. The pump and meter assembly is skid mounted
for location on the gooseneck of the asphalt storage tank.
A center
heated flexible line is provided to connect the metering pump
package to the drum mixer. |
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| ALmix OPTIONS: |
- Stationery or Portable Asphalt Plant Design Configurations
- 2, 3 or 4 bin Cold Feed Systems
- Unitized pollution control
equipment
- Baghouse or Wet Collector
- Variety of Asphalt Storage Silos
and Slat Conveyors; self-erecting portable units or
stationery units
- Portable or Stationery Asphalt Tanks, with
indirect or direct fired heating systems
- Various optional blending equipment control features including:
Automatic feed control, multiple
mix design storage, virgin aggregate tolerance alarm
and asphalt temperature compensation
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Serving
the Aggregate, Asphalt, Concrete, and Mining Industries
Throughout the Americas, Africa, the Caribbean, the Middle East & the Pacific
Rim. |
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New, Used and Reconditioned Construction and Mining Equipment |
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