Claims
- 1. An asphalt based material recycling system comprising:
- a heated milling apparatus, for receiving asphalt based material to be recycled and for simultaneously heating and milling said asphalt material, said heated milling apparatus including:
- at least a first rotatable milling vessel having an opening, an outlet, and an interior milling region, said opening for receiving said asphalt based material to be recycled, said at least a first rotatable milling vessel opening communicating with said interior milling region, for allowing said asphalt based material to be recycled to be inserted into said interior milling region of said at least a first rotatable milling vessel through said opening, and for simultaneously continuously venting said interior milling region allowing escape of moisture from said asphalt material during heating and milling of said asphalt material, said at least a first rotatable milling vessel having an axis of rotation disposed at an acute angle with respect to a horizontal plane, and whereby said at least a first rotatable milling vessel is rotated at said acute angle with respect to said horizontal plane;
- a plurality of milling elements disposed within said rotatable milling vessel, for milling said asphalt based material to be recycled as said rotatable milling vessel rotates;
- said heated milling apparatus including a plurality of mixing members mounted proximate an interior surface of said rotatable milling vessel, for moving and mixing said asphalt material with said milling elements;
- a milling vessel heat source, for heating said rotatable milling vessel as said rotatable milling vessel rotates and said asphalt material is milled;
- a source of asphalt based material processing additive, for introducing a processing additive into said interior milling region of said at least a first rotatable milling vessel, said processing additive mixing with said heated and milled asphalt based material to be recycled, for forming a recycled asphalt based material slurry; and
- at least one filtering apparatus, for filtering said recycled asphalt based material slurry, for removing at least foreign objects from said reduced asphalt material.
- 2. The asphalt based material recycling system of claim 1 wherein said at least a rotatable milling vessel includes a back plate having an outlet for dispensing said recycled asphalt based material slurry, said outlet disposed at a level below a bottom region of said vessel opening, said back plate arranged at an obtuse angle relative to said horizontal plane, and further including asphalt based material slurry lifting members, for lifting said recycled asphalt based material slurry and for providing said recycled asphalt based material slurry to said back plate outlet region.
- 3. The asphalt based material recycling system of claim 2, wherein said back plate further includes a screen covering said outlet region of said back plate.
- 4. The asphalt based material recycling system of claim 1, wherein said milling elements include steel balls.
- 5. The asphalt based material recycling system of claim 1, wherein said processing additive includes virgin flux asphalt.
- 6. The asphalt based material recycling system of claim 1, wherein said processing additive is selected from the group consisting of virgin asphalt, resin, solvent, oil and plastic.
- 7. The asphalt based material recycling system of claim 1, wherein said at least one filtering apparatus includes a rotating filter coupled to at least a first rotatable milling vessel.
- 8. The asphalt based material recycling system of claim 7, wherein said rotating filter includes a foreign object outlet region, for allowing foreign objects to be expelled from said rotating filter.
- 9. The asphalt based material recycling system of claim 1 further including a second rotatable milling vessel, for receiving said recycled based asphalt material slurry from said at least one filtering apparatus.
- 10. The asphalt based material recycling system of claim 9, further including a second filtering apparatus, for receiving recycled asphalt based material slurry from said second rotatable milling vessel.
- 11. The asphalt based material recycling system of claim 10, wherein said second filtering apparatus includes
- a filter housing having an inlet, for receiving said recycled asphalt based material slurry from said second rotatable milling vessel, and an outlet, for discharging filtered recycled asphalt based material slurry; and
- at least one filter member disposed in said filter housing, said at least one filter member having a plurality of apertures, for allowing at least a portion of said received recycled asphalt based material slurry to pass through said filter member, and for preventing at least foreign objects from passing through said filter member.
- 12. The asphalt based material recycling system of claim 11, wherein said second filtering apparatus includes a filter heat source, for heating said filter housing and said recycled asphalt based material slurry during filtering.
RELATED APPLICATION
This application is a continuation-in-part of U.S. patent application Ser. No. 08/756,881 filed Dec. 2, 1996 now U.S. Pat. No. 5,848,755.
US Referenced Citations (8)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
756881 |
Dec 1996 |
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