Method, process and system for recycling an asphalt-based roofing material
AssigneeNorthstar Clean Technologies Inc.
InventorsTerry Alan Charles, Gord Johnson, Barry Diebold
Life of this patent
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Abstract
The present disclosure provides a method, process and system for recycling an asphalt-based roofing material. In particular, the method, process and system are capable of removing and recovering an aggregate product, fiber product and an asphalt product from the asphalt-based roofing material. The aggregate, fiber and asphalt products each may be reused in a variety of applications.
Claims16
A method for recovering an asphalt product from an asphalt/solvent mixture comprising:
- (a) preparing the asphalt/solvent mixture by mixing a substantially de-aggregated asphalt-based roofing material with a solvent;
- (b) passing the asphalt/solvent mixture through a solvent separator to separate the asphalt product from the solvent;
- and
- (c) removing the asphalt from the solvent separator,
- wherein the asphalt in the asphalt/solvent mixture was derived from an asphalt-based roofing material and is substantially free of aggregate and fiber.
A system for producing at least an asphalt product from an asphalt-based roofing material containing a plurality of roofing shingles, the system comprising:
- (a) an aggregate removal unit operable to remove substantially all aggregate from the asphalt-based roofing material to produce an aggregate-free asphalt/fiber mixture;
- (b) a fiber separation unit operable to mix the aggregate-free asphalt/fiber mixture with a solvent to produce a slurry and to remove substantially all fiber from the slurry to produce an asphalt/solvent mixture;
- and
- (c) a solvent separation unit operable to separate substantially all solvent from the asphalt to produce an asphalt product.
Dependencies are inferred from the claim text.