C - Chemistry – Metallurgy – 10 – C
Patent
C - Chemistry, Metallurgy
10
C
C10C 3/00 (2006.01) B03B 9/06 (2006.01) B03D 1/16 (2006.01) B03D 1/20 (2006.01) B02C 19/12 (1990.01)
Patent
CA 2108111
ABSTRACT OF THE DISCLOSURE A method and apparatus for recycling asphalt based roofing material which typically comprises a body of asphalt and fiber, with aggregate on and adhered to the asphalt. The asphalt bodies, with aggregate, are subjected to disengagement action to disengage the aggregate from the asphalt body without substantially reducing the size of the aggregate. Disengagement is effected by causing asphalt bodies with aggregate to impact on each other. Disengagement may be effected by placing asphalt bodies with aggregate in water to form in a slurry, which is agitated, as by an impeller. The asphalt bodies float to the top of the liquid, which is a non- solvent for asphalt, and are removed and dewatered; the aggregate of undiminished size is separately recovered.
Finoll Recycling Ltd.
Goudreau Gage Dubuc
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