Abstract:
Le procédé de traitement de pneumatiques hors d'usage en vue de la séparation les uns des autres des constituants dudit pneumatique, à savoir le métal et le caoutchouc et leur récupération consiste :
à abraser la bande de roulement du pneumatique afin de mettre à nu la partie métallique de cette dernière, à découper les talons et flancs du pneumatique afin de les séparer de la bande de roulement, à soumettre les différentes parties du pneumatique à l'action d'un solvant liquide et ce pendant un temps suffisant pour obtenir un ramollissement du caoutchouc, à étirer les différentes parties du pneumatique par action mécanique d'étirement tangentiel sur deux de leurs grandes faces opposées en sorte de désolidariser le métal du caoutchouc ou d'extraire le métal du caoutchouc. L'invention à également pour objet une installation pour la mise en oeuvre du procédé.
Abstract:
In a method for disposing of waste matter such as waste tire pieces by using first and second shredding members (9,10,11,12,109,110,111,112, 209,309, 409,210, 310,410) each having shredding blades (9b,10b,11b,12b,109b,110b,111b,112b, 209b,210b,309b,310b,409b,410b), the waste matter is introduced into a space (13,213,313,413) between the shredding blades of the first and second shredding members and shredded or torn off into fine chips by operating the first and second shredding members, while partially caught by grooves (17a,117,217a,317a,417a) formed in opposite faces of the shredding blades of the respective shredding members. By moving the first and second shredding members relative to each other in opposite directions to impart a shearing force to the waste matter in the space between the shredding blades, the waste matter is effectively torn off into pieces. When a waste tire is processed in an apparatus for practicing the method, it is successfully separated into rubber parts and wires with high efficiency.
Abstract:
A rubber reduction and recycling system (20) with dramatically reduced power requirements. The present invention provides a series of reduction stations (32, 38, 50) which successively reduce the size of the rubber (24) typically in the form of tires (24), to eventually result in crumb rubber (26). The power requirements are dramatically reduced by providing a fixed cutting plate (72) through which the teeth (66) of the cutting apparatus pass and cut the rubber (24) in a shearing fashion. Moreover, the teeth (66) of the cutting apparatus pass through the fixed cutting plate (72) at an angular disposition so that at any given point, a relatively small portion of the rubber (24) is being cut and thereby consuming power. Finally, the power consumption is reduced by providing the teeth (66) on rotating shafts (60, 62) in a plurality of series of arcuate patterns. Therefore, at any given time, only a relatively small number of teeth (66) in each series cut at the same time and thereby require power.
Abstract:
A motor truck for use in collecting and processing solid waste material such as scrap tires. The truck includes a chassis including a cab (18); a body structure (34) positioned on the chassis behind the cab and defining a storage chamber (35); a shredder (36) mounted on top of the body structure (34) forwardly of the storage chamber (35); a compactor (38) positioned within the body structure (34) beneath the shredder (36) and forwardly of the storage chamber (35); and a conveyor system (40) for conveying tires from a curbside location upwardly for discharge downwardly into the open upper end of the shredder (36). The shredded tires are discharged downwardly into the body structure (34) rearwardly of the compactor (38), whereafter the compactor (38) is actuated to stroke rearwardly and compress the tire shreds into the storage chamber. After the truck has visited a series of retail tire outlets and the storage chamber (35) is full of tire shreds, the truck returns to a recycling center where a door (42) at the rear of the storage chamber is opened and the compactor (38) is utilized as an ejector to eject the tire shreds from the storage chamber (35). At the recycling center the tire shreds are processed to form a rubber crump material and the rubber crump material is combined with scrap plastic to form a rubbber/plastic resin compound in pellet form.
Abstract:
The present invention relates to a method for recycling rubber-containing articles and more particularly reinforced articles such as the tire casings of vehicles. This method comprises placing the article in a chamber in which an ozone-containing gas is fed, and applying mechanical deformation forces on said article. The ratio between the ozone consumption value for recycling the article and the power consumption value for generating the mechanical forces is kept within an interval of 0.02-2 g/watt per hour This invention also relates to a device for realising this method, wherein said device comprises a working chamber, a system for feeding an ozone-containing gas therein as well as a system for mechanically deforming the articles to be recycled. The deformation system is made in the shape of two or more members, wherein one member is capable of rotation relative to the second and comprises protruding working organs which are arranged so as to engage the articles to be recycled.
Abstract:
An apparatus pulverizes material composed of wet or dry discrete objects into relatively smaller particles with shock waves created by flowing the material through a housing having alternating rotors (92, 94, 96, 98) and orifice plates (128, 130, 134, 136). The housing includes a feed chute (78) for introducing the material into the housing, a second end having an opening for removing the smaller particles, and internal sides meeting in corners, which extend longitudinally between the first and second ends. Rotors extend along a rotatable shaft in the housing, each rotor including a polygonal shaped plate and radially extending vanes.
Abstract:
The method for shredding wornout tire cases comprises exposing wornout tire cases to the effect of an explosion exerted thereon in a closed circular system so as to establish a directional circulating flow of explosion products. The device for carrying the method into effect comprises a chamber (1, 2) and a piping (3, 4) which forms, together with the chamber, a circular closed system, the chamber has a portion shaped as a cone-frustum shell (1), wherein shredding members (7) and a fixing unit of the explosive (13) are accommodated; a the smaller-diameter portion of the cone-shaped shell (1) communicates with one end of the piping (4) through a valve appearing as, e.g., a grid established by plates (7) in the area of the smaller base of the shell (1), while the other end of the piping (3) communicates with the chamber (1, 2) from the side of the larger-diameter portion of the cone-shaped shell (1).
Abstract:
An apparatus for cutting scrap tires and other waste products is disclosed. The apparatus includes a frame having a cylindrical anvil roll (10) rotatably mounted therein. A blade roll (30) is also mounted in the frame for rotation about an axis parallel to the rotational axis of the anvil roll, and a plurality of axially spaced roller blades (40) of predetermined diameter are fixed to the blade roll and rotatable therewith. The blade roll is also provided with a pair of axially spaced thrust wheels (56, 58), with the thrust wheels being positioned outboard of the blades and being equal to or slightly greater in diameter than the predetermined diameter of the blades. Driving means (160) are provided in the apparatus for rotating the anvil roll and the blade roll in opposite directions in such a manner that scrap tires fed to the rolls will be drawn inwardly into the nip formed between the rolls and will be cut between the blades and the anvil. Biasing means (80, 82) are also provided for forcing the outer peripheries of the thrust wheels andthe anvil roll into hard contact with one anothertherebyto maintain the spacing between the cutting surfaces of the blades and the outer surface of the anvil fixed, notwithstanding the separating forces caused by the movement of a tire between such surfaces.
Abstract:
The methods for manufacturing micronized powder comprise pre-grinding processing, cryogenic freezing, and grinding of infeed material and warming, ferrous metal and fiber removal, accumulation, screening, and storage of micronized powder. Generally, the warming may involve recirculation of micronized powder through the warming apparatus. Further, the accumulation may permit the grinding and screening to occur at their respectively optimal rates, and the fiber removal, via use of a vibrating screener, may increase the purity of the micronized powder. In one embodiment, the micronized powder comprises micronized rubber powder ("MRP").