Abstract: The invention relates to a plant for treating a mixture of waste products from a domestic waste collection, comprising a unit for treating a mixture (2B) of materials obtained from the mixture of waste, a substantial portion of the mass of the mixture of materials being formed by biodegradable materials, the treatment unit comprising a trommel screen (3) which is provided with a wall (4) for separating the mixture (2B) of materials into a first fraction (5) passing over the wall (4) and a second residual fraction, two densimetric tables, and a ballistic separation means (8) which is positioned between the trommel screen (3) and the densimetric tables in order to collect the first fraction (5) of materials and to supply the densimetric tables with a first sub-fraction and second sub-fraction (9, 10) of materials, respectively, the first subfraction (9) being formed by materials which have a density lower than that of the materials forming the second sub-fraction (10). Waste treatment methods and plants.

Abstract: The invention concerns a method for treating a mixture of wastes (4) comprising biodegradable wastes, the method being characterized in that it includes the following successive steps: Step A: the mixture of wastes (4) is subjected to a first composting cycle so as to obtain a mixture of pre-composted wastes (4), Step B: the mixture of pre-composted wastes (4) is subjected to a drying so as to obtain a mixture of dried wastes (4), Step C: the mixture of dried wastes (4) is separated into at least a portion of heavy wastes (14) and a portion of light wastes (13), Step D: the portion of light wastes (13) is subjected to a second composting cycle to so as to obtain a mixture (4) of refined wastes (20). Treatment of biodegradable wastes.

Abstract: The invention relates to a device (1) for opening containers (C), the device comprising: an enclosure (2) having an inlet (3) for admitting containers (C), the inlet being above an outlet (4); a rotary shredder tool (10) suitable for causing the containers (C) to open, and extending between a bottom end (11) and a top end (12), said shredder tool (10) being mounted via its top end (12), the bottom end (11) of said shredder tool (10) being free inside said enclosure (2); and drive means (14) for driving rotation of said shredder tool (10); the device (1) being characterized in that said shredder tool (10) presents a reference position from which it can move away while continuing to perform its function of opening the containers (C), said shredder tool (10) having a natural tendency to return to its reference position under the action of return means (34). Opening containers.

Abstract: The invention concerns a method for treating a mixture of wastes (2), the latter being with heterogeneous sizes, shapes and consistencies, the treatment method being characterized in that it includes the following successive steps: Step E1 during which the mixture of wastes (2) is separated into a first fraction of wastes (13) the size of which is smaller than about 180 mm, preferably smaller than 140 mm, via a first series of separation orifices (7, 8) and into a residual second fraction of wastes (14), said first series of separation orifices (7, 8) comprising primary orifices (7) and secondary orifices (8) the size of which is larger than the size of the primary orifices (7) so that the mixture of wastes (2) is first brought into contact with the secondary orifices and then with the primary orifices (7), Step E2 during which the first fraction of wastes (13) is subjected to a composting process so as to compost, at least partially, the contained biodegradable wastes. Wastes sorting.

Abstract: The invention concerns a rotary machine (1) for sorting a mixture of wastes (2), said sorting machine (1) being characterized in that it comprises at least: a first trammel section (3), provided with a first separation wall (5) extending over a first length (L1) allowing separating the mixture of wastes (2) into a first fraction of wastes (13) getting through said first separation wall (5) and into a residual second fraction of wastes (14), and a second trammel section (4), provided with a second separation wall (6) extending over a second length (L2) smaller than the first length (L1), and allowing separating the residual second fraction of wastes (14) into a subfraction of small-sized wastes (15) getting through said second separation wall (6) and into a residual subfraction of large-sized wastes (16). Wastes sorting.

Abstract: The invention concerns a method for treating a mixture of wastes (2), the latter being with heterogeneous sizes, shapes and consistencies, the treatment method being characterized in that it includes the following successive steps: Step E1 during which the mixture of wastes (2) is separated into a first fraction of wastes (13) the size of which is smaller than about 180 mm, preferably smaller than 140 mm, via a first series of separation orifices (7, 8) and into a residual second fraction of wastes (14), said first series of separation orifices (7, 8) comprising primary orifices (7) and secondary orifices (8) the size of which is larger than the size of the primary orifices (7) so that the mixture of wastes (2) is first brought into contact with the secondary orifices and then with the primary orifices (7), Step E2 during which the first fraction of wastes (13) is subjected to a composting process so as to compost, at least partially, the contained biodegradable wastes. Wastes sorting.

Abstract: The invention concerns a rotary machine (1) for sorting a mixture of wastes (2), said sorting machine (1) being characterized in that it comprises at least: a first trammel section (3), provided with a first separation wall (5) extending over a first length (L1) allowing separating the mixture of wastes (2) into a first fraction of wastes (13) getting through said first separation wall (5) and into a residual second fraction of wastes (14), and a second trammel section (4), provided with a second separation wall (6) extending over a second length (L2) smaller than the first length (L1), and allowing separating the residual second fraction of wastes (14) into a subfraction of small-sized wastes (15) getting through said second separation wall (6) and into a residual subfraction of large-sized wastes (16). Wastes sorting.

Abstract: The invention concerns a method for treating a mixture of wastes (4) comprising biodegradable wastes, the method being characterized in that it includes the following successive steps: Step A: the mixture of wastes (4) is subjected to a first composting cycle so as to obtain a mixture of pre-composted wastes (4), Step B: the mixture of pre-composted wastes (4) is subjected to a drying so as to obtain a mixture of dried wastes (4), Step C: the mixture of dried wastes (4) is separated into at least a portion of heavy wastes (14) and a portion of light wastes (13), Step D: the portion of light wastes (13) is subjected to a second composting cycle to so as to obtain a mixture (4) of refined wastes (20). Treatment of biodegradable wastes.

Abstract: The invention relates to a device (1) for opening containers (C), the device comprising: an enclosure (2) having an inlet (3) for admitting containers (C), the inlet being above an outlet (4); a rotary shredder tool (10) suitable for causing the containers (C) to open, and extending between a bottom end (11) and a top end (12), said shredder tool (10) being mounted via its top end (12), the bottom end (11) of said shredder tool (10) being free inside said enclosure (2); and drive means (14) for driving rotation of said shredder tool (10); the device (1) being characterized in that said shredder tool (10) presents a reference position from which it can move away while continuing to perform its function of opening the containers (C), said shredder tool (10) having a natural tendency to return to its reference position under the action of return means (34). Opening containers.

Abstract: A rotor blade (1) provided with an outer covering (2) and with at least one load take-up spar (10) associated with at least one pin-receiving bushing (3). Each spar (10) is a compartmentalized spar comprising centrifugal force take-up means (20) incorporated within a twisting stress take-up casing (30), said centrifugal force take-up means (20) comprising at least two boxes (21, 22), each having said pin-receiving bushing (3) of the spar (10) passing therethrough, each box (21, 22) including a closed retention belt (23) extending in the spanwise direction of the blade, the retention belt (23) of one box (22) surrounding the retention belt (23) of another box (21), each retention belt (23) being provided with unidirectional fibers (24) wound around said pin-receiving bushing (3), said casing (30) being provided with inclined fibers (31) presenting an angle relative to said unidirectional fibers (24).

Abstract: A rotor blade (1) provided with an outer covering (2) and with at least one load take-up spar (10) associated with at least one pin-receiving bushing (3). Each spar (10) is a compartmentalized spar comprising centrifugal force take-up means (20) incorporated within a twisting stress take-up casing (30), said centrifugal force take-up means (20) comprising at least two boxes (21, 22), each having said pin-receiving bushing (3) of the spar (10) passing therethrough, each box (21, 22) including a closed retention belt (23) extending in the spanwise direction of the blade, the retention belt (23) of one box (22) surrounding the retention belt (23) of another box (21), each retention belt (23) being provided with unidirectional fibers (24) wound around said pin-receiving bushing (3), said casing (30) being provided with inclined fibers (31) presenting an angle relative to said unidirectional fibers (24).