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WO2010079062A2 - Procédé de production d'un agglomérat de caoutchouc, agglomérat de caoutchouc et produits obtenus à partir de celui-ci - Google Patents

Procédé de production d'un agglomérat de caoutchouc, agglomérat de caoutchouc et produits obtenus à partir de celui-ci Download PDF

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Publication number
WO2010079062A2
WO2010079062A2 PCT/EP2009/067320 EP2009067320W WO2010079062A2 WO 2010079062 A2 WO2010079062 A2 WO 2010079062A2 EP 2009067320 W EP2009067320 W EP 2009067320W WO 2010079062 A2 WO2010079062 A2 WO 2010079062A2
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WO
WIPO (PCT)
Prior art keywords
rubber
textile
agglomerate
fraction
wool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/EP2009/067320
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German (de)
English (en)
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WO2010079062A3 (fr
Inventor
Franco Spennato
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Individual
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Individual
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Publication of WO2010079062A2 publication Critical patent/WO2010079062A2/fr
Publication of WO2010079062A3 publication Critical patent/WO2010079062A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/22—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • B29B17/0036—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting of large particles, e.g. beads, granules, pellets, flakes, slices
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0268—Separation of metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0268—Separation of metals
    • B29B2017/0272—Magnetic separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/0484—Grinding tools, roller mills or disc mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2313/00—Use of textile products or fabrics as reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/08—Transition metals
    • B29K2705/12—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B2001/742—Use of special materials; Materials having special structures or shape
    • E04B2001/746—Recycled materials, e.g. made of used tires, bumpers or newspapers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the invention relates to the utilization of recyclates from the waste tire disposal.
  • Used tires are usually disassembled at ambient temperature (ambience) and / or cold milling (cryogenic), dry-mechanically in scrap tire recycling plants in at least three main fractions of matter.
  • ambient temperature ambient temperature
  • cold milling dry-mechanically in scrap tire recycling plants in at least three main fractions of matter.
  • the following recyclates are recovered, in particular during an ambient decomposition (data in percent by weight):
  • the textile wool / fluff fraction contains the cord fibers contained in vehicle tires and not separated, fine rubber granulate / rubber powder.
  • the proportion of this fraction is between 7% and 15%.
  • All of the above mass fractions may be subject to fluctuations (even beyond the specified limits). These fluctuations depend essentially on the type of tire that is fed into the recycling process (for example truck or car tires) and / or the type of process control.
  • the object of the invention is to supply the textile wool / lint fraction to an economically and ecologically sensible recovery.
  • the textile wool / lint fraction is heated in a heating step to a temperature at which the textile fibers are at least partially plastically deformable ,
  • the textile fibers can be combined with the rubber particles to form an agglomerate. It is not absolutely necessary to reach temperatures at which complete softening of the textile fibers occurs; Rather, it may in many cases be sufficient that the textile fibers are brought into a temperature range just below the softening point, in which they become so soft that they are suitable for at least partially exposing the rubber particles present in the textile wool / lint fraction to envelop or connect to each other.
  • the heating step can be carried out at a temperature in the range between 100 ° C-300 ° C, in particular between 140 0 C and 250 °. Due to the different melting points or softening points of the materials from which the textile fibers are formed, quite certain proportions of the textile wool / lint fraction can thereby be completely plastic deformed while other parts remain in their fibrous state.
  • the process provides an agglomeration of fibers and rubber.
  • the agglomerate obtained has a granular, granular and thus free-flowing and eligible structure, which opens up a variety of uses for the agglomerate thus obtained.
  • the rubber component which is usually undesirable in the conventional recycling of fibers, in the present case contributes to the positive properties of the resulting agglomerate.
  • the new material thus obtained combines the elasticity of vulcanized rubber with the mechanical stability of a fiber composite.
  • the heat required for the process can be generated purely by mechanical means by means of friction, in particular by pressing the textile wool / lint fraction in the heating step by means of a rotating screw against a perforated die.
  • the mass emerging from the holes of the matrix can then be cut by means of a knife passing the holes, so that an agglomerate-like structure results.
  • the mechanical shaping of the agglomerate and the heating required for this purpose thus take place purely mechanically, resulting in a particularly simple process control.
  • the process parameters such as, for example, the rotational speed of the screw, the diameter of the holes, throughput or the like can be used for the optimization or for Adjustment of the process result (different qualities) to be adjusted accordingly.
  • the textile wool / lint fraction may be mechanically treated in the heating step between two disks, at least one of which is in rotation with respect to the other.
  • the material can be conveyed from the inside to the outside, wherein initially an acceleration takes place in the radial and tangential direction, wherein it is compressed. Subsequently, the material is kneaded and rolled and leaves - possibly after passing through a cooling zone - the gap between the pair of discs to the outside. The strand-like agglomerate resulting in this way can subsequently be cut.
  • the textile wool / fluff fraction can be agglomerated in the heating step by two rotors provided with cutting blades, the heating already taking place by the cutting process.
  • the heating of the starting material does not necessarily have to take place exclusively by means of friction.
  • an external heat supply for example by supplying hot media such as air or water (steam), by induction or other means.
  • the described heating step may optionally be modified by the addition of water for temperature regulation / quenching. This makes it possible to influence the nature of the resulting agglomerate. Because the textile wool / lint fraction is subjected to an optional comminution process, in particular a cutting operation, before the heating step, the result can be further improved.
  • the textile wool / lint fraction may be subjected to a post-granulation step. This can be done, for example, by grinding or cutting, so that a desired grain size of the agglomerate can be set in conjunction with appropriately selected screening operations.
  • the temperature at which the Nachgranulier Republic takes place it may be below the maximum temperature of the heating step, so that there is no unwanted clumping of the agglomerate.
  • the textile wool / lint fraction as starting material may be subjected to a first conditioning process.
  • a first conditioning process for example, in a first step, the remaining steel content in the textile wool / lint fraction can be separated or removed. This can be done, for example, by fractionation methods such as using magnetic surface rollers or drums or the like, or generally using magnetic fields.
  • micronization or homogenization may also take place with cooling, in which case a fiber length in the range between 50 and 5000 ⁇ m can be set.
  • the micronization can take place, for example, by the use of a granulator, an extended-nip mill or the like.
  • the In the conditioning process resulting qualitatively reproducible homogenate which may also be referred to as a homogenate from or with high-performance fibers (HLF) can subsequently, as already stated, be further processed into the agglomerate according to the invention; Alternatively, as shown above, the agglomerate can also be produced directly from the unconditioned textile wool / lint fraction. In addition to the production of an agglomerate, there are further possibilities for refining the textile wool / lint fraction, with or without a preceding conditioning step. Thus, the textile wool / lint fraction or the homogenate after the addition of suitable organic additives, eg. B.
  • suitable organic additives eg. B.
  • stabilizers or binders are fed to a pelletor, in which from the textile wool / lint fraction or the homogenate pellets having a thickness in the range of 2.5 to 3.5, in particular of 3 mm and a length in the range between 8 and 12, in particular of 10 mm are produced.
  • These pellets may contain fibers having a length in the range from 500 ⁇ m to 5,000 ⁇ m and a diameter in the range between 20 and 25, in particular in the range of 22 ⁇ m; the use of fibers in a length between 50 and 2,000 ⁇ m is also conceivable.
  • the pellets may contain rubber powder with rubber particles with a diameter of up to about 2000 microns. Possible applications of the pellets are in the field of modified asphalt and generally in road construction. A variety of other applications is conceivable.
  • the fibers may - if necessary after the above-described conditioning step - also without further treatment together with or separated from the rubber powder can be further processed directly into end products, in particular such end products can be used for bituminous preparations, in construction chemicals or in the area of nonwoven or felt fabrics (there, for example, as staple fiber fabrics).
  • the textile wool / lint fraction fulfills the following functions:
  • the advantage of the above-mentioned conditioning process lies essentially in the fact that virtually independently of the nature of the starting material, ie the textile wool / fluff fraction, an intermediate product for further processing can be produced as a homogenate, the properties of which are optimized for the respective application can.
  • additives for example binder / ink, master batch (dyes / pigments), classification in an air classifier, pelleting or agglomeration:
  • a short fiber fraction with textile fibers with a diameter of about 20-25 ⁇ m, in particular about 22 ⁇ m and a length in the range of about 50-2000 ⁇ m; optionally containing rubber powder with a grain size of up to about 2000 ⁇ m
  • a fiber fraction with textile fibers having a diameter of about 20-25 ⁇ m, in particular about 22 ⁇ m and a length in the range of about 500-5000 ⁇ m; optionally containing rubber powder with a grain size of up to about 2000 ⁇ m
  • the rubber agglomerate obtained by the process according to the invention contains textile fiber material and vulcanized rubber. Tires rubber whose respective proportions of the total mass of the agglomerate correspond to those of the starting material, ie the textile / lint fraction.
  • the proportion of the textile fiber material in this case can thus amount to 40% -70% of the total mass of the agglomerate, whereas the proportion of the vulcanized tire rubber can amount to 20% -55% of the total mass.
  • the textile fiber material may contain approx. 70% polyester, 20% polyamide 6 and 10% viscose.
  • the agglomerate may also be made from the homogenate or parts thereof. Parameters such as rubber content, particle size of the rubber powder, fiber length or the like can be optimized in this way to the respective application.
  • the textile fiber material contains at least partially in a temperature range just below the softening point or plastically deformed textile fibers, results in a completely new material containing or from a recyclate having similar physical properties as a thermoplastic Elastomervulkanisat, which can be assigned to the group of thermoplastic elastomers is.
  • the individual grains do not show due to the reinforcement by the fiber material, in an enclosure with in a temperature range just below the softening point brought fiber material and / or in an integration not in a temperature range just below the softening point of fibers brought into the grains can exist, very positive mechanical properties, for example, in terms of their long-term stability.
  • the grain size of the agglomerate can be adjusted within a wide range by an appropriate choice of the process parameters; in particular, it may be in a range of 0, lmm-10mm, preferably in a range of lmm-7mm. Larger or smaller particle sizes are also conceivable.
  • the described rubber agglomerate lends itself to the production of a large number of products. Due to the special properties described, it opens up the possibility, in particular, of producing moldings only by using thermal / mechanical processes (in particular pressing or extruding) without the addition of a binder.
  • the function of the binder is taken over by the proportion of textile fiber material which at least partially softens and re-solidifies during the production of the product.
  • the rubber agglomerate can be used, in particular, as a component of rubber mats in the sports and games sector (in particular as a fall protection mat), in agriculture (for example for stable equipment such as stable mats, stable floors, stable walls or as a riding surface covering), as a component of sound or heat protection devices (in particular as a component of sound or heat protection walls or coverings), as a heat or cold storage, as Besohlenungsconceparat for shoe soles, as part of floor coverings in sports halls or sports fields, especially in the back of artificial turf, or even as a component of road surfaces, in particular as a component of modified asphalts such as rubber asphalt.
  • the agglomerate described can be used as an absorber material for gases or liquids. For example.
  • the hydrophobic properties of the material according to the invention to the fact that it can be used advantageously for the absorption of oil in water, in particular in the removal of oil spills. Since the material also floats in oil saturated condition, it can be easily removed from the surface and subsequently used as a high energy content fuel.
  • the agglomerate according to the invention offers further application potential as a decoration material for gardening or landscaping (possibly colored there), porous irrigation hoses, bituminous materials, in particular joint sealants, or also in products for corrosion protection, eg. B. in sprayable corrosion inhibitors.
  • the material according to the invention can be used for partial reinforcement and viscosity stabilization.
  • the agglomerate may be flash-frozen prior to further processing, finely ground and suspended in suitable solvents.
  • the agglomerate according to the invention can also be used in an insulating preparation, in particular for the areas of heating / sanitation, refrigeration / air conditioning, sheathing systems (for example for reactor systems). ren or boiler in the industrial sector), solar applications, fire protection systems (advantageous there is the relatively high flashpoint of the agglomerate), sound insulation, industry, shipbuilding and petrochemical plants are advantageously used.
  • the rubber agglomerate according to the invention can be used for anti-slip products, in particular anti-slip mats, for example, for load securing.
  • Stage 1 Material equalization / relaxation.
  • the contaminated steel wool mixed fraction arriving from the scrap tire recycling plants is picked up in portions by means of a suitable lifting / gripping device and fed to a continuously operating SPEFRA softsys.
  • the SPEFRA-softsys is a material equalizing and loosening unit.
  • the output, equalized and fuzzed, but still contaminated, output steel wool mix fraction is transferred online to the first separation and classifying operation of clean / contaminated, metallic / non-metallic subfractions.
  • Stage 2 First material separation and classification (upstream).
  • the equalized and loosened steel wool mixed fraction continuously emerging from the SPEFRA-softsys is transferred online to / on a SPEFRA trennsys.
  • the SPEFRA-trennsys is an electrically operated, multi-stage, mechanical / hydraulic / pneumatic, vertical and / or horizontal oscillating, with at least the following material separation sensors: magnetic and magnetic field separation technology (inductive sensors), color recognition separation technology, density detection Separation technology as well as sieve and separation cascade system equipped with different mesh plates.
  • material separation sensors magnetic and magnetic field separation technology (inductive sensors), color recognition separation technology, density detection Separation technology as well as sieve and separation cascade system equipped with different mesh plates.
  • the clean, sorted steel wires classified according to grades, lengths and diameters obtained from the first separation and classification process are transferred for further processing and processing after leaving the SPEFRA separation system.
  • the separated, contaminated steel wool residual mixed fraction can be continuously recycled to a thermomechanical decontamination stage.
  • Stage 3 Continuous (thermo) -dry mechanical decontamination and digestion of the contaminated steel wool mixed fraction.
  • the contaminated output steel wool - residual mixed fraction separated out after the separation and classification process plus online addition from stock of material is used for continuous thermomechanical decontamination, partial decomposition Final), partial comminution into a SPEFRA-thermozersys-1 and / or into a SPEFRA-thermozersys-2.
  • the material is at the same time partially decontaminated, disrupted, comminuted and discharged by concentrating the rubber / polymer mass fraction by a combination of squeezing, cutting and tearing (action).
  • squeezing, cutting and tearing action
  • the material is simultaneously partially decontaminated, partially thermomechanically, with digestion / splitting of the rubber / polymer mass fraction by combination of high-speed acceleration, centrifugal / impact forces, tearing and irradiation by means of digested material, (open-minded) teilzerkleinert and discharged.
  • Stage 4 Material separation and classification (downstream).
  • the digested, decontaminated steel fibers / rubber granulate / textile fiber mixed fraction which continuously emerges from the SPEFRA-thermozersys-1 and / or into an SPEFRA-thermozersys-2 is transferred online to / on a SPEFRA separating system.
  • the clean, sorted by grades, lengths and diameters of the separation and classification process, the pure grade material fractions are after leaving the SPEFRA-trennsys transferred for further processing and processing, impure material is recycled.
  • the SPEFRA-trennsys is an electrically operated, multi-stage, mechanical / hydraulic / pneumatic, vertical and / or horizontal oscillating, with at least the following material separation sensors: magnetic and magnetic field separation technology (inductive sensors), color recognition separation technology, density detection Separation technology as well as sieve and separation cascade system equipped with different mesh plates.
  • material separation sensors magnetic and magnetic field separation technology (inductive sensors), color recognition separation technology, density detection Separation technology as well as sieve and separation cascade system equipped with different mesh plates.
  • a process for the recovery of recyclables from a mixture contaminated, for example, with rubber or rubber components characterized in that the material supplied to the process is the waste product of a preliminary process.
  • thermo / dry mechanical process step in particular a continuous thermo / dry mechanical decontamination, partial decomposition or digestion or a partial comminution.
  • the invention thus makes in particular the following:
  • FIGS. 2-5 are overviews of further recovery methods.
  • Figure 1 shows a rough schematic of a plant for carrying out the method according to the invention.
  • the plant shows the cutting unit 1, the agglomerator 2, the post-granulator 3 and the sighting unit 4, which are interconnected via the conveyor lines 12,23 and 34 or via the return lines 32 and 42.
  • the starting material of the process namely the above-described textile wool / lint fraction as a waste product of old tire recycling processes, is first fed to the cutting unit 1, where, for example, by means of rotating knives a comminution of the textile wool / lint fraction takes place. Subsequently, the comminuted textile wool / lint fraction is fed via the conveying path 12 to the agglomerator 2.
  • the conveyor line 12 can be designed in particular as a fan, screw conveyor or as a conveyor belt.
  • the comminuted textile wool / lint fraction is pressed by means of a rotating screw (not shown) against a rotating punch die (also not shown), where it subsequently emerges from the holes of the die and by means of a knife passing the holes (not shown) is cut.
  • Due to the mechanical treatment of the textile wool / Fluff fraction in the agglomerator 2 generates enough frictional heat to plastically deform the textile fibers and combine them with the rubber particles to form an agglomerate.
  • the process parameters are chosen so that the temperature of the textile wool / lint fraction remains below that temperature at which the rubber would decompose, but above that temperature from which a slight plastic deformability is guaranteed at least of parts of the textile fibers.
  • An advantageous range for the choice of temperature in the agglomerator is between 100 0 C and 300 ° C, in particular between 140 0 C and 250 ° C.
  • the agglomerate After leaving the agglomerator 2, the agglomerate reaches the post-granulator 3 via the conveying path 23, where the desired grain size of the agglomerate is adjusted by a suitably selected combination of cutting and screening units. Grains with too small a diameter are fed back to the agglomerator 2 via the return 32.
  • the temperature in the Nachgranulierer is to be chosen so that sticking together of the individual grains of the agglomerate can be largely avoided with each other; thus it will be below the temperature in the agglomerator 2.
  • Grains with the desired grain size are fed via the conveying path 34 of the viewing unit 4, where they are cleaned of still adhering dust particles and optionally packaged.
  • the dust particles are fed via the return 42 back to the agglomerator 2, where a renewed agglomeration takes place.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

La présente invention concerne un procédé de réutilisation d'une fraction laine textile/peluches avec des fibres textiles et des particules de caoutchouc issues de processus de recyclage de pneumatiques usagés. Selon l'invention, au cours d'une phase de chauffage, la fraction laine textile/peluches est portée à une température à laquelle les fibres textiles peuvent subir une déformation plastique au moins partielle, et les fibres textiles sont reliées aux particules de caoutchouc pour donner un agglomérat. L'invention concerne également l'agglomérat produit au moyen dudit procédé, et des produits obtenus à partir de cet agglomérat.
PCT/EP2009/067320 2008-12-18 2009-12-16 Procédé de production d'un agglomérat de caoutchouc, agglomérat de caoutchouc et produits obtenus à partir de celui-ci Ceased WO2010079062A2 (fr)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
DE102008062707 2008-12-18
DE102008062707.0 2008-12-18
DE102009019297.2 2009-04-30
DE102009019297 2009-04-30
DE102009022150.6 2009-05-20
DE102009022150 2009-05-20
DE102009022385 2009-05-22
DE102009022385.1 2009-05-22
DE102009022870 2009-05-27
DE102009022870.5 2009-05-27
DE102009033793.8 2009-07-17
DE200910033793 DE102009033793A1 (de) 2008-12-18 2009-07-17 Verfahren zur Herstellung eines Gummi-Agglomerats, Gummi-Agglomerat und Produkte daraus

Publications (2)

Publication Number Publication Date
WO2010079062A2 true WO2010079062A2 (fr) 2010-07-15
WO2010079062A3 WO2010079062A3 (fr) 2010-09-16

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PCT/EP2009/067320 Ceased WO2010079062A2 (fr) 2008-12-18 2009-12-16 Procédé de production d'un agglomérat de caoutchouc, agglomérat de caoutchouc et produits obtenus à partir de celui-ci

Country Status (2)

Country Link
DE (1) DE102009033793A1 (fr)
WO (1) WO2010079062A2 (fr)

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CN104249417A (zh) * 2013-06-30 2014-12-31 周中平 废橡胶履带金属橡胶分离机
WO2021019501A1 (fr) * 2019-08-01 2021-02-04 Universidad De La Frontera Additif granulé à base de fibres textiles issues de pneumatiques hors d'usage (nfu), poudre de pneumatique et liant asphaltique et procédé d'obtention du produit et utilisation
WO2021250170A1 (fr) * 2020-06-10 2021-12-16 Het Elastomertechnik Gmbh Patins de traverse pour un élément en béton
CN113905865A (zh) * 2019-06-04 2022-01-07 兰精股份公司 提供具有预定纤维长度分布的加工的含纤维素的原始材料的方法

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DE102012107655B4 (de) 2012-08-21 2017-04-27 Aqua Vital Int. Ltd. & Co. KG Bewässerungsschlauch

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Publication number Priority date Publication date Assignee Title
CN104249417A (zh) * 2013-06-30 2014-12-31 周中平 废橡胶履带金属橡胶分离机
CN113905865A (zh) * 2019-06-04 2022-01-07 兰精股份公司 提供具有预定纤维长度分布的加工的含纤维素的原始材料的方法
US12371856B2 (en) 2019-06-04 2025-07-29 Lenzing Aktiengesellschaft Process for preparing a broken-up, cellulose-containing, starting material with a predefined fibre-length distribution
WO2021019501A1 (fr) * 2019-08-01 2021-02-04 Universidad De La Frontera Additif granulé à base de fibres textiles issues de pneumatiques hors d'usage (nfu), poudre de pneumatique et liant asphaltique et procédé d'obtention du produit et utilisation
WO2021250170A1 (fr) * 2020-06-10 2021-12-16 Het Elastomertechnik Gmbh Patins de traverse pour un élément en béton

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WO2010079062A3 (fr) 2010-09-16

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