WO1998058532A1 - Materiaux contenant des matieres a base de papier et d'argile et procede permettant de les produire - Google Patents

Materiaux contenant des matieres a base de papier et d'argile et procede permettant de les produire Download PDF

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Publication number
WO1998058532A1
WO1998058532A1 PCT/EP1998/003822 EP9803822W WO9858532A1 WO 1998058532 A1 WO1998058532 A1 WO 1998058532A1 EP 9803822 W EP9803822 W EP 9803822W WO 9858532 A1 WO9858532 A1 WO 9858532A1
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WO
WIPO (PCT)
Prior art keywords
cardboard
fibers
paper
clay
proportion
Prior art date
Application number
PCT/EP1998/003822
Other languages
German (de)
English (en)
Inventor
Jürgen Herbst
Original Assignee
Herbst Juergen
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Herbst Juergen filed Critical Herbst Juergen
Publication of WO1998058532A1 publication Critical patent/WO1998058532A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/34—Filling pastes
    • 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
    • C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/001—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing unburned clay
    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • 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
    • C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
    • C04B2111/0062—Gypsum-paper board like materials
    • 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 materials containing paper and clay materials and to processes for their production.
  • DE-A-3707473 discloses a filler material which can be used as cat litter and which can be produced from paper pulp or another fiber pulp and has similar properties to filler materials based on clay. Vegetable fibers are processed into a porridge and the moisture content of the porridge is adjusted so that it can be torn or shredded, which reduces the fiber size of the porridge. The slurry is then agglomerated into grains and the grains are dried to a moisture content of at most 10%. In one embodiment of this method, fillers, for example kaolin clays, are added to the slurry in order to increase the density of the filling material.
  • fillers for example kaolin clays
  • a filling material produced according to DE-A-3707473 is homogeneous in nature and has the particular disadvantage that it shows no or only very little clumping ability. Furthermore, it is not able to effectively close off the stored liquid and the associated smells.
  • This object is achieved according to the invention by a granulate which is composed essentially of a core of clay materials and fibers made of paper and / or cardboard and / or cardboard and optionally clay materials in a jacket made of clay materials.
  • fibers made of waste paper and / or waste cardboard and / or waste cardboard are used.
  • Textile fibers, for example waste textile fibers, are furthermore preferably added.
  • the total content of the fibers of paper and / or cardboard and / or cardboard in the core is 100 to 2% by volume, the total content of clay materials is 0 to 98% by volume.
  • the proportion of fibers from textiles or vegetable fibers is 0 to 40 vol.%, Each based on the granulate core.
  • the proportion of clay materials in the core is 5 to 90% by volume, further preferably 10 to 90% by volume, 30 to 80% by volume or 40 to 60% by volume.
  • the proportion of fibers made of paper, cardboard and / or cardboard is 95-10% by volume in further embodiments, 90-10% by volume, 70-20% by volume and 60-40% by volume, respectively.
  • the preferred proportion of textile fibers and / or vegetable fibers is 0 to 30% by volume, preferably 2 to 20% by volume, further preferably 10 to 20% by volume.
  • the core contains a minimum content of 2-5% by volume of clay materials.
  • textile or vegetable fibers are understood to mean, for example, fibers from flax, hemp, sesal, rapeseed, bast fibers, such as. B. jute, cotton, fibers from cellulose acetate, for example viscose, also from litter, hay, wood shavings, grass, corn, leaves, and fibers from animal wool.
  • paper is intended to refer to a flat, essentially fiber, predominantly vegetable origin standing material can be understood, which is formed by dewatering a fiber slurry on a sieve.
  • the weight per unit area is generally up to 225 g / m2.
  • cardboard is used for basis weights over 225 g / qm, the term cardboard encompasses both paper and cardboard with a basis weight of 150 to 600 g / qm.
  • Clay is to be understood as a fine-grained sedimentary rock that can consist of different material particles. Bentonite is a contaminated clay that was created by weathering volcanic tuffs.
  • Clays mainly consist of clay minerals, quartz, other phyllosilicates such as mica, feldspar and carbonate minerals (e.g. calcite). It is not uncommon for sulfides (e.g. pyrite), red-coloring iron oxides (hematite), iron hydroxides and organic substances (e.g. plant residues) to be present.
  • the clays are externally characterized in that, depending on their mineralogical composition, they swell when water is absorbed, are plastically deformable and retain their shape after drying. Clays are classified as so-called cohesive soils.
  • the invention encompasses all clay minerals, preferably, for example, bentonites.
  • paper / cardboard and / or cardboard is slurried with water.
  • Fibers made of waste paper and / or waste cardboard and / or waste cardboard are preferably used, wherein textile fibers, preferably waste textiles and / or vegetable fibers, can also be added.
  • a defined amount of clay is optionally added. The sound causes the fibers and thus the end product to solidify.
  • the core clay content is between 0 and 90% by volume, for example 2 to 50% by volume, preferably 5 to 30% by volume.
  • auxiliaries for example coloring agents and / or biocidal agents and / or fragrances, can be present in the core in small proportions of at most 10% by volume, preferably 8% by volume and more preferably 2-5% by volume.
  • these auxiliaries take a back seat in comparison to the other substances contained in the core, namely the paper, cardboard and / or cardboard fibers and optionally the clay minerals.
  • the granules in the core contain clay materials with a proportion of more than 2 vol.%, More preferably more than 5 vol.% Up to 10 vol.%. This in particular also reduces the weight of the granules and improves the water absorption properties.
  • the water is then largely removed from this slurry.
  • the partially dried amount is now appropriately z. B. by rubbing or grinding, brought into granular form and then dried further, comparatively low temperatures are sufficient.
  • the granules can also be exposed to temperatures well beyond the water boiling point for a short time. The flash point of the fiber part should not be exceeded.
  • suitable clay flour materials are applied to the partially dried granules, so that the paper and / or cardboard and / or cardboard and the core containing clay materials remains surrounded by a coat of clay materials.
  • the residual moisture is then extracted from the clay granules with paper core, whereby comparatively low temperatures are sufficient.
  • the granules can also briefly lent beyond the water boiling point. The flash point of the fiber content should not be exceeded.
  • the partially dried granules can also be dried before coating and then sprayed with an emulsion of clay and water. Finally, the granules have to be finally dried.
  • the paper core absorbs most of the liquid, the clay jacket provides the advantageous lump formation, so that the wetted amount can be removed as lumps.
  • this type of granulate production no clay needs to be added to the slurry, since the later stability of the grain is achieved by the surrounding clay material jacket.
  • the granules according to the invention with a core of paper or paper / clay are thus designed in such a way that they can absorb the moisture.
  • This moisture-absorbing core is surrounded by a jacket made of a clay material, for example bentonite, which on the one hand is able to connect the individual granules to one another and on the other hand can seal off the liquid stored in the core and the associated odors.
  • the granules according to the invention are free-flowing. However, the wetted granules associated with moisture clump together, so that the granules can be removed as a lump or in the form of a few larger lumps. This has the advantage that only this single clump pen or a few larger lumps, but not the entire granulate, must be replaced.
  • the granulate according to the invention which can preferably be used as cat litter, combines advantages of heavy bentonite, sepiolite litter and the lighter litter from alternative materials in an almost ideal manner. H. it is very light and yet extremely lumpy. The light core absorbs liquids, the thin jacket ensures that odors are bound and sealed.
  • the present invention therefore differs from DE-A 370473 in particular in that kaolin clays are not merely incorporated into the granules as filler material, but rather the granule grain is encased or coated with clay materials, for example kaolin clays.
  • a material is also provided which comprises fibers made of paper and / or cardboard and / or cardboard and clay materials.
  • Such a material can also contain textiles, for example used textiles, or plant fibers. The proportions to which the paper and / or the cardboard and / or the cardboard and the clay materials as well as the textiles of all plant fibers are contained in the material have been disclosed above in connection with the granules.
  • hydraulic and / or air-binding mineral substances can also be contained in the material for stabilization.
  • these are cement, lime and gypsum in proportions of 0 to 20 vol.%, Preferably 0 to 15, further preferably 5 to 10 vol.%.
  • Examples of a material produced according to the invention are, for example, a plate-shaped material, for example a building board.
  • the basis for a building board is a slurry of water and clay materials.
  • This slurry is associated with fibrous paper and / or cardboard and / or cardboard.
  • pre-shredded paper / cardboard / cardboard material in the slurry or mixing it with the slurry beforehand, for example dry-shredded paper.
  • Part of the water is extracted from this pulp so that the now firmer mass can be pressed into a mold.
  • the main part of the remaining water is now removed from the formed body, for example the plate, by the pressing.
  • the plate can be largely completely dried in or outside the mold at temperatures of well below 100 ° C., for example at 60 to 80 ° C. In one embodiment of the invention, briefly higher heating is also possible.
  • care must be taken that the flash point of the fiber portion is not exceeded so that the fibers are retained in the molded body.
  • the form in which the slurry is placed can be lined with paper or cardboard, for example, so as to produce a "laminated" plate and to give the surface of the plate a finer finish and a more stable structure to the whole plate.
  • the physical properties of the plate are largely determined by the proportion of the clay materials, the size of the paper fibers and the pressure. In this way, very light, but also very heavy plates can be produced.
  • the properties of the products with regard to stability can be further improved by adding textile fibers, for example used textiles, and / or natural fibers.
  • the additions of hydraulically binding substances or air-binding substances should also be mentioned here.
  • the proportion of the clay materials is decisive for the flammability of the plate.
  • the mixing ratio of the materials to be mixed according to the invention is largely variable within the limits specified above.
  • the mixing ratios are set depending on the material to be manufactured. In general, the strength depends on the proportion of clay and the pressure.
  • the bodies according to the invention can be produced, for example, in plate form or in cuboid form. This makes them suitable as building boards for lightweight walls, as a replacement for plasterboard, but they can also be used as insulation boards in which the thermal and acoustic insulation in partition walls under wooden ceilings, under screeds and the like during interior construction. Rectangular bodies are suitable as lightweight building blocks for bricking in lightweight walls.
  • a slurry is made from water, the clay materials and shredded paper and / or cardboard and / or cardboard to produce lightweight building blocks.
  • the viscosity of the slurry is adjusted so that it is viscous.
  • the fibers contained ensure high stability and tear resistance when drying out.
  • the paper and / or cardboard and / or cardboard materials are roughly shredded, for example by a shredder. These strips or snippets are sprayed or soaked with the slurry, for example, and subsequently pressed into any shape of any shape.
  • a shredder By drying out in or outside the mold, lightweight building blocks can be produced, their lightness and stability are largely determined by the pressure used. These lightweight building blocks can be glued using the slurry used to manufacture them.
  • the slurry before drying out can also be used, for example, as an insulating coating, filler, adhesive, plaster or fine plaster.
  • the materials produced according to the invention essentially contain fibers made of paper and / or cardboard and / or cardboard as well as clay materials. Textile fibers can also be used in an amount of up to 30% by volume. Hydraulic and / or air-binding mineral substances can also be used in a proportion up to a maximum of 20 vol.%. Dyes, odorants, germicides or germicides as well as flame retardants can also be added. However, the proportions of these additives are significantly lower compared to the fibers made of paper and / or cardboard and / or cardboard and the clay materials. The proportion of the latter is at least 60% by volume, preferably 70% by volume, further preferably 75 or 80% by volume. The ratio of the fibers made of paper, cardboard and / or cardboard and the clay materials can, as stated above, be varied within wide limits and can be adjusted depending on the properties of the material to be obtained. Examples of the proportions that can be used are:
  • the total content of the fibers made of paper and / or cardboard and / or cardboard is 98-2% by volume, the total content of clay materials is 2-98% by volume.
  • the proportion of fibers from textiles or vegetable fibers is 0-40 vol.%.
  • the proportion of clay materials is 5-90% by volume, further preferably 10-90% by volume, 30-80% by volume or 40-60% by volume.
  • the proportion of fibers made of paper, cardboard and / or cardboard is 95-10% by volume in further embodiments, 90-10% by volume, 70-20% by volume and / or 60-40% by volume.
  • the preferred proportion of textile fibers and / or vegetable fibers is 0-30% by volume, furthermore for example 2-20% by volume, furthermore 10-20% by volume.
  • regularly shaped bodies are thus produced, clay materials being mixed with water to form a slurry, the slurry being brought into intimate connection with fibers of paper and / or cardboard and / or cardboard in order to form a wet, deformable one To obtain mass that is shaped into a desired shape.
  • the body is pressed and dried at a temperature below the flash point of the fibers.
  • Paper and clay were intimately mixed into a slurry with the addition of water in a compulsory mixer. After a homogeneous slurry had formed, water was removed through a centrifuge until the mass contained about 60% by volume of solids. The mass was then shaped in a granulator into grains of approximately 0.5 mm to 8.0 mm.
  • the mass granulated into grains was then dusted with finely ground bentonite flour and immediately dried down in a belt dryer to a residual moisture of approx. 5%.
  • the moisture of the grains when dusting with bentonite flour caused the formation of a solid bentonite shell.
  • the thickness of the coating can therefore be adjusted by the moisture content of the grains during pollination.
  • the thickness of the jacket was approximately 0.5 mm.
  • the granules were passed through a sieve with a mesh size of 0.8 mm, thereby separating the material from excess bentonite flour.
  • the bulk weight of the finished lump granules was approximately 440 g / l.
  • the lump granules were produced by the same method as in Example I.
  • the slurry were additional the materials wheat straw and hay added in the amounts specified above.
  • Part of the amount of bentonite was replaced by sepiolite, which also belongs to the clays.
  • Sepiolite also has the ability to bind large amounts of liquid, but is not swellable, but slightly lighter.
  • the proportion of wheat straw and hay made the core a little more porous and the granules a little lighter.
  • the fibers of hay and wheat straw are very swellable and also bind odors very well.
  • the bulk density of the finished lump granules was approx. 400 g / ltr.
  • the lump granules were produced by the same method as in Example II. Due to the reduced clay content in the core, the lump litter became somewhat lighter, the bulk density of the finished lump granulate was approx. 380 g / ltr. Production of a lightweight board
  • Textile fibers in the form of jute fibers 100 g from old potato sacks 100 g from old potato sacks
  • Paper, clay and jute fibers were intimately mixed into a slurry with the addition of water in a compulsory mixer. After a homogeneous slurry had formed, the plaster was mixed in evenly.
  • the resulting mass was withdrawn through a centrifuge until the mass contained approximately 50 vol.% Solids.
  • the partially dewatered mass was then placed in a metal mold lined with old cardboard and pressed together by a hydraulic press, so that only a water fraction of about 20% by volume remained in the mass.
  • a lightweight board was made by the same procedure as in Example I.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne des granulés qui se caractérisent en ce qu'ils comprennent essentiellement un noyau en fibres de papier et/ou de carton ou bien un noyau de matières à base d'argile et de fibres de papier et/ou de carton, ainsi qu'une enveloppe extérieure de matières à base d'argile. L'invention concerne en outre un matériau contenant des matières à base d'argile et des fibres de papier et/ou de carton, la part de matières à base d'argile étant comprise entre 2 et 98 % en volume et celle des fibres de papier et/ou de carton, entre 98 et 2 % en volume.
PCT/EP1998/003822 1997-06-23 1998-06-23 Materiaux contenant des matieres a base de papier et d'argile et procede permettant de les produire WO1998058532A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19726439.5 1997-06-23
DE1997126439 DE19726439C2 (de) 1997-06-23 1997-06-23 Verfahren zur Herstellung von Granulat sowie Granulat aus Papierfasern und Ton

Publications (1)

Publication Number Publication Date
WO1998058532A1 true WO1998058532A1 (fr) 1998-12-30

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PCT/EP1998/003822 WO1998058532A1 (fr) 1997-06-23 1998-06-23 Materiaux contenant des matieres a base de papier et d'argile et procede permettant de les produire

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DE (1) DE19726439C2 (fr)
WO (1) WO1998058532A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2454169A (en) * 2007-10-25 2009-05-06 Ecobond Methods of producing article using particulate waste products

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11192278B2 (en) * 2014-05-13 2021-12-07 Criaterra Innovations Ltd. Mixture, a process and a mold for manufacturing recyclable and degradable articles

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003255A1 (fr) * 1982-03-11 1983-09-29 Skamol Skarrehage Molerverk As Granule pour absorber des liquides et son procede de fabrication
US4570573A (en) * 1984-10-18 1986-02-18 Cincinnati Fiber Inc. Composition useful as a cat litter, plant mulch, or grease and oil absorbent
DE3707473A1 (de) 1985-03-21 1988-09-22 Lowe Henry E Saugfaehiges fuellmaterial
DE4028933A1 (de) * 1990-09-12 1992-03-19 Guenter Warnke Verfahren zur herstellung eines stoffs zur aufnahme von fluessigkeiten, insbesondere (tier-)exkremente aufsaugende streu, sowie eine nach dem verfahren hergestellte streu
EP0515959A2 (fr) * 1991-05-23 1992-12-02 Hard Ag Granulés et procédé pour les obtenir
EP0573303A1 (fr) * 1992-06-05 1993-12-08 Peter Barnes Sorbant granulaire stabilisant de liquides
DE4341923A1 (de) * 1993-12-09 1995-06-14 Johannes Prof Dr Rer N Gartzen Adsorbens, Verfahren zu seiner Herstellung sowie Verwendung eines solchen Adsorbens
EP0716806A1 (fr) * 1994-11-17 1996-06-19 Paul Wüseke Kalksandsteinwerk GmbH & Co. KG Granulé très poreux utilisé dans les litières pour animaux
DE29707259U1 (de) * 1997-04-16 1997-09-25 G.V.F. Gesellschaft zur Verwaltung der Fermentation Neubrandenburg mbH, 17033 Neubrandenburg Klumpende Kleintierstreu

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2243815A1 (de) * 1972-09-07 1974-03-14 Max Oelting Verfahren zum verwerten von papiermuell
GB2084624A (en) * 1980-09-30 1982-04-15 Grefco Insulation board

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003255A1 (fr) * 1982-03-11 1983-09-29 Skamol Skarrehage Molerverk As Granule pour absorber des liquides et son procede de fabrication
US4570573A (en) * 1984-10-18 1986-02-18 Cincinnati Fiber Inc. Composition useful as a cat litter, plant mulch, or grease and oil absorbent
DE3707473A1 (de) 1985-03-21 1988-09-22 Lowe Henry E Saugfaehiges fuellmaterial
DE4028933A1 (de) * 1990-09-12 1992-03-19 Guenter Warnke Verfahren zur herstellung eines stoffs zur aufnahme von fluessigkeiten, insbesondere (tier-)exkremente aufsaugende streu, sowie eine nach dem verfahren hergestellte streu
EP0515959A2 (fr) * 1991-05-23 1992-12-02 Hard Ag Granulés et procédé pour les obtenir
EP0573303A1 (fr) * 1992-06-05 1993-12-08 Peter Barnes Sorbant granulaire stabilisant de liquides
DE4341923A1 (de) * 1993-12-09 1995-06-14 Johannes Prof Dr Rer N Gartzen Adsorbens, Verfahren zu seiner Herstellung sowie Verwendung eines solchen Adsorbens
EP0716806A1 (fr) * 1994-11-17 1996-06-19 Paul Wüseke Kalksandsteinwerk GmbH & Co. KG Granulé très poreux utilisé dans les litières pour animaux
DE29707259U1 (de) * 1997-04-16 1997-09-25 G.V.F. Gesellschaft zur Verwaltung der Fermentation Neubrandenburg mbH, 17033 Neubrandenburg Klumpende Kleintierstreu

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2454169A (en) * 2007-10-25 2009-05-06 Ecobond Methods of producing article using particulate waste products

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Publication number Publication date
DE19726439A1 (de) 1998-12-24
DE19726439C2 (de) 1999-05-06

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