WO1996011980A1 - Procede de production de particules de fibres cellulosiques, et particules de fibres cellulosiques - Google Patents

Procede de production de particules de fibres cellulosiques, et particules de fibres cellulosiques Download PDF

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Publication number
WO1996011980A1
WO1996011980A1 PCT/DK1995/000401 DK9500401W WO9611980A1 WO 1996011980 A1 WO1996011980 A1 WO 1996011980A1 DK 9500401 W DK9500401 W DK 9500401W WO 9611980 A1 WO9611980 A1 WO 9611980A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
oil
particles
cellulose fibre
silica
Prior art date
Application number
PCT/DK1995/000401
Other languages
English (en)
Inventor
Jarn Pedersen
Original Assignee
I/S Kara
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 I/S Kara filed Critical I/S Kara
Publication of WO1996011980A1 publication Critical patent/WO1996011980A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/02—Cellulose; Modified cellulose
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/02—Cellulose; Modified cellulose

Definitions

  • the present invention relates to a process for producing cellulose fibre particles for use as an additive wherein a composite mass comprising cellulose fibres and oil is prepared and thereafter the composite mass is, under compression, transformed into particles.
  • WO 88/08438 discloses a granulate of fibres for use as a filler material in bitumen wherein the fibres in the granulate are bonded together by bitumen.
  • the oil forms a coherent, workable mass which is held together solely by cohesion. Furthermore, the oil functions as a lubricant/parting agent in the pelleting of the composite mass. Oil has no binding effect in the additive and is compatible with the material into which the additive is to be admixed and accordingly the oil does neither prevent nor obstruct the dispersion of the additive in the material .
  • the pellets prepared by the above-mentioned prior art process usually have an oil content of about 25% by weight. By reducing the oil content to below 25% by weight the amount of energy consumed during the pelleting will increase because, as mentioned above, the oil functions as a lubricant. An oil content of at least 12% is required in the finished pellets in order to permit pelleting.
  • the object of the present invention is to provide a process of the type stated in the introductory part of claim 1 by which cellulose fibre particles with a reduced oil content can be prepared.
  • silica functions as a parting and releasing agent.
  • the process according to the invention preferably uses a composite mass comprising, on an anhydrous basis, 2.0-5.0% by weight of silica and 5.0- 15.0% by weight of oil, preferably 2.5-3.5% by weight of silica and 10.0- 14.0% by weight of oil .
  • sica means silicium dioxide.
  • the cellulose fibres used in the process of the invention may be any type, e.g. cellulose fibres prepared by processing waste paper material such as newspapers.
  • a preferred embodiment of the invention is characterized in that the composite mass further comprises water.
  • Water serves as an additional lubricating and releasing agent in the apparatus in which the compression of the composite mass is performed.
  • a further special embodiment of the invention is characterized in that a pair of rollers is used for transforming the composite mass into particles.
  • the particles prepared by the process of the invention may e.g. be in the form of pellets with a cylindrical shape, granules or flakes.
  • the cellulose fibre particles according to the invention are charac- terized in that they comprise cellulose fibres in an amount of 80.0-93.0% by weight, oil in an amount of 5.0-15.0% by weight, and silica in an amount of 2.0-5.0% by weight.
  • a preferred embodiment of the invention is characterized in that the cellulose fibre particles comprise mineral fibres in an amount of 82.5- 87.5% by weight, oil in an amount of 10.0-14.0% by weight, and silica in an amount of 2.5-3.5% by weight.
  • Cellulose fibre particles of the invention were prepared using the process of the invention.
  • the cellulose fibre starting material is a mixture of various newspapers.
  • the newspaper material is decomposed in an Acta crusher and finely divided in a shredder to which silica of the type Elkern Microsilica ⁇ from Elkern Materials is added by means of a vibrating metering device.
  • the mixture of finely divided newspaper material and silica is thereafter milled in a FCC 10 hammer mill provided with a sieve having openings with a diameter of 2 mm to effect an efficient mixing of newspaper material and silica.
  • the resulting fibre mixture is by means of a conveyor belt led from the hammer mill via a belt weigher to a cascade mixer.
  • Oil of the type Mobilsol 41 is heated to 90 * C in a heat exchanger and together with steam injected into the fibre mixture.
  • the dosing of the oil is controlled electronically on the basis of the amount of fibre mixture supplied to the cascade mixer, the amount being measured on the belt weigher.
  • the mixture obtained in the cascade mixer is thereafter pelleted in a Swiss Co bi pelleting press provided with a matrix having openings with a diameter of 3 mm and a length of 4 mm.
  • Various operational parameters for two experiments will appear from Table 1.
  • the extrusion proceeded with no tendency of clotting of the openings and with no tendency of overheating of the matrix.
  • the resulting fibre pellets had a cylindrical shape with a diameter of about 3 mm and a length of 3-6 mm.
  • the pellets had a good coherence and a good ability to be mixed with bitumen.
  • the energy consumption in the pelleting press during the extrusion was 40-45 Amperes.
  • the resulting pellets had a good coherence and they remained sub ⁇ stantially intact during handling, packaging, transportation and processing in feeding apparatus in connection with the addition to a bitumen product.
  • the resulting bituminous mixture had a fibre content of 0.25% by weight.
  • the pellets used were highly flowable and the feeding proceeded without problems like clotting in the feeding box.
  • the resulting bituminous product containing fibres was laid out on a section of a motorway.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Procédé de production de particules de fibres cellulosiques utilisables comme additif, selon lequel on prépare une masse composite comportant des fibres cellulosiques, de l'huile et de la silice, puis on comprime la masse composite et on la transforme en particules.
PCT/DK1995/000401 1994-10-12 1995-10-10 Procede de production de particules de fibres cellulosiques, et particules de fibres cellulosiques WO1996011980A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK1180/94 1994-10-12
DK118094 1994-10-12

Publications (1)

Publication Number Publication Date
WO1996011980A1 true WO1996011980A1 (fr) 1996-04-25

Family

ID=8101896

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1995/000401 WO1996011980A1 (fr) 1994-10-12 1995-10-10 Procede de production de particules de fibres cellulosiques, et particules de fibres cellulosiques

Country Status (1)

Country Link
WO (1) WO1996011980A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998038250A1 (fr) * 1997-02-28 1998-09-03 Ingvar Tuft Procede a base de granules fibreux de production d'asphalte fibreux
WO1998044046A1 (fr) * 1997-03-27 1998-10-08 Aggregate Industries Uk Limited Composition pour revetement routier
WO2001053417A2 (fr) * 2000-01-19 2001-07-26 SCHÜMANN SASOL GmbH Procede de fabrication d'un enrobe bitumineux, element moule destine a l'utilisation selon l'invention et enrobe bitumineux destine a des revetements routiers
WO2004056613A1 (fr) * 2002-12-20 2004-07-08 Schmidt Axel H Materiau d'amortissement et son procede de production
EP1580225A1 (fr) * 2004-03-23 2005-09-28 Saint-Gobain Revetex S.r.l. Additif de renforcement pour matrices bitumées

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943079A (en) * 1974-03-15 1976-03-09 Monsanto Company Discontinuous cellulose fiber treated with plastic polymer and lubricant
DE3223178C1 (de) * 1982-06-22 1984-03-22 Fels-Werke Peine-Salzgitter Gmbh, 3380 Goslar Verfahren zur Herstellung von mit mineralischen Stoffen beschichteten organischen Fasern
WO1988008438A1 (fr) * 1987-05-01 1988-11-03 Stephan Rettenmaier Granules comprenant des charges fibreuses
DE3736215A1 (de) * 1987-10-26 1989-05-03 Juergen Dipl Chem Dr Kuether Schuettfaehiges, lockeres bitumenmischgut, verfahren zu dessen herstellung und verwendung desselben

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943079A (en) * 1974-03-15 1976-03-09 Monsanto Company Discontinuous cellulose fiber treated with plastic polymer and lubricant
DE3223178C1 (de) * 1982-06-22 1984-03-22 Fels-Werke Peine-Salzgitter Gmbh, 3380 Goslar Verfahren zur Herstellung von mit mineralischen Stoffen beschichteten organischen Fasern
WO1988008438A1 (fr) * 1987-05-01 1988-11-03 Stephan Rettenmaier Granules comprenant des charges fibreuses
DE3736215A1 (de) * 1987-10-26 1989-05-03 Juergen Dipl Chem Dr Kuether Schuettfaehiges, lockeres bitumenmischgut, verfahren zu dessen herstellung und verwendung desselben

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998038250A1 (fr) * 1997-02-28 1998-09-03 Ingvar Tuft Procede a base de granules fibreux de production d'asphalte fibreux
WO1998044046A1 (fr) * 1997-03-27 1998-10-08 Aggregate Industries Uk Limited Composition pour revetement routier
GB2338486A (en) * 1997-03-27 1999-12-22 Aggregate Ind Uk Ltd Road surfacing composition
GB2338486B (en) * 1997-03-27 2000-08-09 Aggregate Ind Uk Ltd Road surfacing composition
WO2001053417A2 (fr) * 2000-01-19 2001-07-26 SCHÜMANN SASOL GmbH Procede de fabrication d'un enrobe bitumineux, element moule destine a l'utilisation selon l'invention et enrobe bitumineux destine a des revetements routiers
WO2001053417A3 (fr) * 2000-01-19 2002-02-07 Schuemann Sasol Gmbh Procede de fabrication d'un enrobe bitumineux, element moule destine a l'utilisation selon l'invention et enrobe bitumineux destine a des revetements routiers
WO2004056613A1 (fr) * 2002-12-20 2004-07-08 Schmidt Axel H Materiau d'amortissement et son procede de production
EP1580225A1 (fr) * 2004-03-23 2005-09-28 Saint-Gobain Revetex S.r.l. Additif de renforcement pour matrices bitumées

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