Recycling is synonymous in most production processes and the asphalt manufacturing section is no exception.
The reprocessing of reclaimed asphalt has many advantages, not only beneficial to the national economy but also for the preservation of valuable natural resources.
From the producers viewpoint it is becoming necessary to achieve a more acceptable market price.
Cold Processing I
Reclaimed asphalt planings can be added in quantities up to 25 % direct into the paddle mixer where it is homogenously mixed with virgin aggregates.
BENNINGHOVEN supply the complete system necessary for this method consisting of:
• Steep sided Cold feed hopper(s)with oversize grid
• Variable speed belt feeder(s)
• Conveying system by conveyor or elevator
• Dose weighing system
• Flue gas disposal arrangement
• Full electrical integration to the mixing controls
Cold Processing II
A further innovative system is to introduce the reclaimed asphalt planings into the discharge end of the dryer via a “high speed” slinger conveyor to mix with the virgin aggregates. Heat transfer starts to occur in the dryer and flue gases produced pass through the existing system. Heat transfer continues
BENNINGHOVEN offer the complete range of technology and equipment to meet customers specific requirements for both hot and cold recycling, including single or double rotor asphalt planings crushers in fixed or mobile configuration.
The equipment is made to the expected BENNINGHOVEN standards and complies with all safety and environmental regulations.
Reclaimed asphalt is reprocessed after it has been reduced to an acceptable size by crushing.
BENNINGHOVEN offer single or double rotor asphalt planings crushers in fixed and mobile configuration.
For larger quantities of reclaimed asphalt planing processing, up to 100%, hot recycling is necessary.
This is achieved through a separate, uniflow large volume drying drum equipped with a special
BENNINGHOVEN developed burner. The design of the dryer internals preclude direct contact between the flame and reclaimed material. After heating, the processed asphalt is stored in an insulated buffer silo from where it is batch weighed and introduced to the mixer as required.
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