Unit and method for recycling a bituminous membrane
AssigneePerformance Roof Systems S.A. En Abrege P.R.S.
InventorsNino Macaluso, Eric Bertand
Life of this patent
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Abstract
Method and unit for recycling a bituminous membrane provided with at least one reinforcement, which membrane is reduced to pieces which are introduced into a recycling unit, provided with a first rotor, housed in a first stator, and where they are heated and ground, said pieces being conveyed into a chamber, delimited by an external wall of the first rotor and a recess arranged in a counter-element mounted on the stator, where they are subjected to a trituration, the pieces thus triturated then being discharged from the chamber by flowing along said external wall of the rotor.
Claims18
A recycling unit for recycling a bituminous membrane provided with at least one reinforcement, which unit comprises a first rotor housed in a first stator, provided with a chamber delimited by an external wall of the first rotor, wherein the chamber is a trituration chamber formed by a recess arranged in a counter-element mounted on the stator which is substantially cylindrical, which trituration chamber comprises an adjustment means organized to adjust the volume and/or shape of the chamber and wherein at least one scraper organized to scrape the external wall of the rotor is mounted downstream of the trituration chamber, which scraper extends over at least part of the length of the first rotor and has a stepped profile having at least a first and a second step, the first step, which is situated close to an output of the recycling unit, being disposed closest to the external wall of the first rotor.
A method for recycling a bituminous membrane by using a recycling unit, which membrane is provided with at least one reinforcement, said recycling unit being provided with a first rotor, housed in a first substantially cylindrical stator, provided with a chamber delimited by an external wall of said first rotor, said chamber having a shape and/or a volume which can be adjusted by positioning a counter-element in which there is arranged a recess that is part of said chamber, said counter-element being mounted on said first stator, said recycling unit further comprising at least one scraper having a stepped profile with at least a first and a second step and being mounted downstream of said chamber, said method comprising:
- (a) reducing said bituminous membrane into pieces, having a nature or a size;
- (b) introducing said pieces into said recycling unit;
- (c) adjusting said shape and/or volume of said chamber by positioning said counter-element in such a manner as to be compatible with said nature or size of said pieces;
- (d) conveying said pieces into said chamber and mixing and/or grinding said pieces within said chamber in order to obtain processed pieces;
- (e) discharging said processed pieces from said chamber by having them flown along said external rotor wall;
- (f) subjecting said processed pieces to a trituration within said chamber in order to obtain a melting of the bituminous binder contained in said processed pieces;
- (g) using said stepped profile of said at least one scraper for imposing several rotations on said melting bituminous binder in order to obtain melt bitumen;
- and
- (h) scraping said melt bitumen from said external rotor wall by using said at least one scraper.
A method for recycling a bituminous membrane by using a recycling unit, which membrane is provided with at least one reinforcement, said recycling unit being provided with a first rotor, housed in a first substantially cylindrical stator, provided with a chamber delimited by an external wall of said first rotor, said chamber having a shape and/or a volume which can be adjusted by positioning a counter-element in which there is arranged a recess that is part of said chamber, said counter-element being mounted on said first stator, said recycling unit further comprising at least one scraper having a stepped profile with at least a first and a second step and being mounted downstream of said chamber, said method comprising:
- (a) reducing said bituminous membrane into pieces, having a nature or a size;
- (b) introducing said pieces into said recycling unit;
- (c) adjusting said shape and/or volume of said chamber by positioning said counter-element in such a manner as to be compatible with said nature or size of said pieces;
- (d) conveying said pieces into said chamber and mixing and/or grinding said pieces within said chamber in order to obtain processed pieces;
- (e) discharging said processed pieces from said chamber by having them flown along said external rotor wall;
- and
- (f) subjecting said processed pieces to a trituration within said chamber in order to obtain a melting of the bituminous binder contained in said processed pieces.
Dependencies are inferred from the claim text.