Recycling process for discarded roof shingles
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United States of America Patent
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Jul 29, 2014
Grant Date -
May 2, 2013
app pub date -
Oct 31, 2012
filing date -
Nov 1, 2011
priority date (Note) -
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Abstract
A process extracts and reclaims the components of an asphalt-based material having as constituents at least asphalt and one or more solid materials. A solvent for asphalt dissolves the asphalt constituent to form a slurry of asphalt-solvent liquid and the solid materials. The liquid and the solids in the slurry are then separated. The liquid is separated into solvent and asphalt. The solids, when of more than one type, are separated into at least one pure constituent solid. In a preferred embodiment, the process runs in a continuous mode with the various materials flowing as streams into spaces where steps of the process operate. The process can be used for both worn roofing shingles and for asphalt paving.
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Cited Art Landscape
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