Magnum Series

Counterflow Drum Mixers

The original, high performance counter-flow unitized drum mixer, the Magnum series has set the standard for more than thirty years, in mix quality and durability still out of reach by other manufacturers.

Considered by many as the industry bellwether, the Magnum still sets the industry standard for a unitized drum mixer.

The efficiency and predictability of daily performance of the CMI Magnum series has proven to be valuable to operators of large stationary installations as well as highly mobile paving companies running CMI Super Portable series of asphalt plants.

This is part of the family of counter-flow drum mixers that incorporates the latest in counter-flow technology and is capable of meeting the most stringent air quality regulations, providing improved mix quality and lower cost per ton.

Available as portable drums in capacities from 150 to 500tph and as relocatable and stationary drums in capacities from 300 to 600tph, Magnum drums move virgin aggregates and RAP materials counter to the flow of the exhaust gas inside the drum.

Virgin aggregate is dried and heated by the exhaust gas in front of the burner flame.

The aggregate then moves behind the flame into a mixing chamber that is isolated from the hot gas stream. It is here that the liquid asphalt, additives, fines and RAP materials are added to the mix.

  • Field proven counterflow technology
  • 30% + RAP with low maintenance costs and a single shell design
  • Tuneable performance provided by indexing slingers
  • Longest mixing zone in the industry produces high quality material
  • Super Portables have fast setup and tear down times for high mobility
  • Available in Super Portable, Portable, Relocatable and Stationary configurations

Features

  • Specially designed flight arrangement begins with material intake distribution flights, which feed the aggregate drying flights
  • The unique design of the combustion flights keeps material out of and away from the burner flame, allowing for complete combustion
  • The recycle inlet allows the introduction of processed, crushed and reclaimed pavement material.
  • A patented reversible slinger allows simple calibration and varies the effective drying length of the drum enabling the most efficient performance
  • CMI Magnum Drying Heating Zone

    Drying Heating Zone

    Unique veiling flighting that allows full utilization of indexing slingers has been refined based on year of experience in counterflow drums and can be tuned to maximise efficiency in all applications.

  • CMI Magnum Combustion Zone

    combustion zone

    The combustion zone of Magnum drums benefits from flights that hold dried material against the drum shell and allow any airborne VOC’s from the mixing zone to be passed through the intense burner flame, eliminating visible stack emissions.

  • CMI Magnum Asphalt Plant Mixing ZOne

    Mixing Zone

    Magnum drums feature the longest mixing section in the industry and are equipped with CMI’s unique “castlelated” flights, resulting in the best mixing of any counterflow drum.

  • CMI Magnum Asphalt Plant INdexing Slinger

    Indexing Slinger

    Indexing slingers on all Magnum drums (manual on Super Portable drums) allow the most efficient drying and heating by varying the point at which aggregate veiling begins.

  • CMI Magnum Asphalt Plant Super Portables

    Super Portables

    Magnum Super Portable drums are pre-sloped, allowing for quicker setup and tear down and include full width landing pads.

  • CMI Magnum Asphalt Plant Integrated Ductwork

    Integrated Ductwork

    Magnum Super Portable drums feature all ductwork mounted to the drum chassis. The baghouse is connected using a flexible seal, no crane required!

Options

Portable & relocatable arrangements
Specialized transport trailers for reliable roadability in select markets
Super Portable configurations with integrated ductwork
Chain drive with trunnion drive as standard
Flexible fuel choices
Numerous dust handling configurations and technologies

Specifications

Units

150

225

275

300

400

500

600

PRODUCTION Capacity

Output

tph

150

225

275

300

400

500

600

mtph

136

204

250

272

363

454

544

DRUM MIXER

MAIN Drum Diameter

ft / ins

5’ 4"

7’

7’

7’ 4”

8’ 4”

9’ 5”

10’ 6”

mm

1,600

2,130

2,130

2,235

2,540

2,900

3,200

Drum Length

ft / ins

33’

39’ 4”

39’ 4”

44’

48’

52’

56’

mm

10,058

12,010

12,010

13,437

14,630

15,850

17070

DRUM Drive

hp

4 x 15

4 x 20

4 x 25

4 x 30

4 x 50

4 x 60

4 x 100

kW

4 x 11

4 x 15

4 x 19

4 x 22

4 x 38

4 x 45

4 x 74

Air Volume

Total

ft³ / min

24,000

36,000

44,000

48,000

64,000

80,000

96,000

m³ / min

679

1,020

1,246

1,359

1,812

2,265

2,718

Burner

Burner Type

-

Fuel Oil

Fuel Oil

Fuel Oil

Fuel Oil

Fuel Oil

Fuel Oil

Fuel Oil

Capacity

x106 BTU / hr

49.3

75.6

96.8

96.8

120

150

200

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