WO2002072945A2 - Procede et dispositif d'introduction d'une charge dans des fibres contenues dans une suspension de matiere fibreuse - Google Patents

Procede et dispositif d'introduction d'une charge dans des fibres contenues dans une suspension de matiere fibreuse Download PDF

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Publication number
WO2002072945A2
WO2002072945A2 PCT/EP2002/001622 EP0201622W WO02072945A2 WO 2002072945 A2 WO2002072945 A2 WO 2002072945A2 EP 0201622 W EP0201622 W EP 0201622W WO 02072945 A2 WO02072945 A2 WO 02072945A2
Authority
WO
WIPO (PCT)
Prior art keywords
pump
reaction
disperser
fiber suspension
suspension
Prior art date
Application number
PCT/EP2002/001622
Other languages
German (de)
English (en)
Other versions
WO2002072945A3 (fr
Inventor
Joerg Rheims
Oliver Heise
Klaus Doelle
Ronald Sigl
Werner Witek
Original Assignee
Voith Paper Patent Gmbh
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 Voith Paper Patent Gmbh filed Critical Voith Paper Patent Gmbh
Priority to EP02729928A priority Critical patent/EP1366232A2/fr
Priority to CA002438607A priority patent/CA2438607A1/fr
Publication of WO2002072945A2 publication Critical patent/WO2002072945A2/fr
Priority to US10/641,061 priority patent/US20040154771A1/en
Publication of WO2002072945A3 publication Critical patent/WO2002072945A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/70—Inorganic compounds forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
    • B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
    • B01F33/83613—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates

Definitions

  • the invention relates to a method and a device for loading fibers contained in a fiber suspension with a filler by means of a chemical precipitation reaction.
  • calcium oxide and / or calcium hydroxide is added to the moist, disintegrated fiber material in such a way that at least a part thereof is associated with the water present in the fiber material.
  • the fiber material treated in this way is then subjected to carbon dioxide.
  • the calcium oxide and / or the calcium hydroxide medium is added to the fiber suspension, a chemical reaction with an exothermic property takes place, the calcium hydroxide preferably being added in liquid form (milk of lime). This means that the water which is possibly stored in or on the fibers of the fiber suspension is not absolutely necessary for the start and the course of the chemical reaction.
  • a device with a large reactor comprising a tubular screw and several additional fluffers or pump disperges is proposed.
  • the aim of the invention is to provide an improved method of the type mentioned at the outset which, on the one hand, ensures a complete and rapid chemical reaction and, on the other hand, an efficient loading of the fiber surfaces (inside and outside).
  • an improved device of the type mentioned at the outset is to be created which makes it possible to carry out the chemical reaction in question continuously, efficiently and economically.
  • This object is achieved according to the invention by a method for loading fibers contained in a fiber suspension with a filler by means of a chemical precipitation reaction, in which the fiber suspension is fed to a pump disperser and subjected to shear forces in the latter in order to break up larger fiber agglomerates into smaller or even individual fibers, and in which the pump disperger is also used as a reactor for the chemical precipitation reaction.
  • This training ensures not only a complete, but also a fast chemical reaction.
  • an efficient loading of the fiber surfaces, inside and outside, is guaranteed.
  • the flow rate of the fiber suspension is preferably reduced in the reaction channel of the pump disperser. The process can thus also be carried out under excess pressure without a valve at the end of the reactor. The risk of the process gas breaking through is eliminated.
  • the fibrous suspension is preferably transported generally radially outward from a central, radially inner region.
  • the concentration in the pulp suspension can be in the pump disperger in particular from about 50% to about 0.1%, advantageously from about 35% to about 2% and preferably from about 35% to about 4% are generated.
  • the fiber suspension can be in a radially outer area of the pump disperser e.g. be diluted with water to make the material pumpable again. chen.
  • a pump disperger is preferably used, the reaction channel of which is at least partially delimited by structured surfaces. These structured surfaces can be formed, for example, by a respective set of teeth or knives.
  • a pump disperger is used, the reaction channel of which is formed between two mutually opposite, relatively rotating plates or the like with structured surfaces, the fiber suspension being generally transported radially outward in this reaction channel.
  • the throughput times for the pulp suspension passing through the pump disperger and correspondingly the reaction time are advantageously chosen in a range from about 0.01 min to about 1 min and preferably in a range from about 0.1 sec to about 10 sec.
  • a pump disperser can be used, the plates of which have a diameter in the range from approximately 0.5 m to 2 m.
  • a pump disperger is used with mutually opposite, relatively rotating plates which have a relative speed radially outside in the range from about 20 to about 100 m / sec and preferably in the range from about 40 to about 60 m / sec.
  • the mutually opposite, relatively rotating plates of the pump disperger are at a mutual distance which is in the range from approximately 0.5 mm to approximately 100 mm and is preferably approximately 25 to 50 mm.
  • the fiber suspension is compressed to form a plug and the fiber suspension compressed into a plug is fed to the pump disperser, by means of which the plug is dissolved again.
  • Calcium carbonate in particular can be used as filler.
  • calcium oxide and / or calcium hydroxide is added to the fiber suspension, the fiber suspension treated in this way is compressed to form a plug, and the fiber suspension compressed to form a plug that dissolves the plug
  • Pump disperger is supplied, carbon dioxide is introduced in the end region of the graft and / or in the inlet region of the pump disperger and / or in a central, radially inner region of the pump disperger, and the pump disperser is simultaneously used as a reactor for converting the above-mentioned starting materials calcium oxide or calcium hydroxide and carbon dioxide in the reaction products calcium carbonate and Water is used, in the reaction channel of which the flow rate of the fiber suspension is preferably reduced.
  • calcium carbonate is thus stored here on the wetted fiber surfaces by adding calcium oxide and / or calcium hydroxide to the moist fiber material, at least some of which can be associated with the water in the amount of fiber.
  • the fiber material treated in this way is then exposed to carbon dioxide.
  • the resulting CaCO 3 ⁇ m can form a suspension between the fibers.
  • dry fiber surfaces can encompass all wetted surfaces of the individual fibers. This also includes in particular the case in which the fibers are loaded with calcium carbonate both on their outer surface and in their interior (lumen).
  • the fibers are loaded with the filler calcium carbonate, the attachment to the wetted fiber surfaces being carried out by a so-called “Fiber Loading TM” process, as is described as such in US Pat. No. 5,223,090.
  • the carbon dioxide reacts with the calcium hydroxide to form water and calcium carbonate.
  • the plug is preferably released by a rotating swirl cross assigned to the pump disperger.
  • the flow rate of the pulp suspension in the reaction channel is preferably reduced to such an extent that the reaction is at least essentially completed at the end of the passage of the pulp suspension through the reaction channel by a correspondingly long throughput time.
  • the fiber suspension mixed with calcium oxide and / or calcium hydroxide can be mixed in a mixing container before it is fed to the pump disperser or compacted into a plug.
  • the fiber suspension and the calcium oxide or calcium hydroxide are preferably fed to the mixing container.
  • the residence time in the mixing container can, for example, be selected so that it is in a range from approximately 0.5 min to approximately 4 h and preferably in a range from approximately 3 min to 1 h.
  • the pulp suspension can be produced, for example, by dissolving pulp or waste paper with additives in a pulper or as a non-dried pulp, which is also referred to as "never tried pulp", can be fed to the loading process, e.g. from another pulp factory.
  • the pH of the fiber suspension can be adjusted by adding carbon dioxide, preferably in the outlet area of the pump disperser.
  • an at least substantially complete conversion of the starting materials mentioned calcium oxide or calcium hydroxide and carbon dioxide into the reaction products calcium carbonate and water is ensured in the course of the chemical precipitation reaction, in which the pH value of the fiber suspension is regulated accordingly or controlled.
  • the ge compared with a desired value at the end of the reaction ⁇ -measured pH value and the control deviation over at least one of the following process control variables is reduced or eliminated:
  • the above-mentioned object is also achieved by a device for loading fibers contained in a fiber suspension with a filler by means of a chemical precipitation reaction, in which the fiber suspension is fed to a pump disperger and subjected to shear forces in it to convert larger fiber agglomerates into smaller or even individual fibers break up, the pump disperger being simultaneously provided as a reactor for the chemical precipitation reaction.
  • FIG. 1 shows a schematic representation of a device for loading fibers contained in a fiber suspension with a filler by means of a chemical precipitation reaction
  • FIG. 2 shows a view of the pump disperger in the direction of arrows A in the figure
  • Figures 1 and 2 show in a purely schematic representation a device 10 for loading fibers contained in a fiber suspension with a filler by a chemical precipitation reaction.
  • the pulp suspension is fed to a pump disperger, i.e. fed to a pump buffer 12 and subjected to shear forces in it to break up the fiber material into individual fibers, i.e. to expose the surfaces of the fibers and increase the contact area accordingly.
  • the pump disperger 12 is also used as a reactor for the chemical precipitation reaction.
  • the pump disperger 12 can in particular be designed such that there is a reduction in the flow rate of the fiber suspension in its reaction channel 14.
  • the pump disperger 12 is designed such that the fiber suspension is generally transported radially outward from a central, radially inner region.
  • a concentration gradient of the fiber suspension can result from approximately 50% to approximately 0.1% and preferably from approximately 35% to approximately 5%.
  • means can be provided in order to dilute the fiber suspension in a radially outer region of the pump disperser 12, for example with water.
  • the reaction channel 14 of the pump disperger 12 is at least partially limited by structured surfaces, which can be formed, for example, by a respective set of teeth or knives.
  • the reaction channel 14 of the pump disperger 12 in the present case is formed between two mutually opposite, relatively rotating plates 16 or the like with structured surfaces.
  • the fibrous suspension is generally transported radially outwards between these plates 16 or the structured surfaces.
  • the throughput time for the pulp suspension passing through the pump disperger 12 and correspondingly the reaction time can be, for example, in a range from about 0.01 min to about 1 min and preferably in a range from about 0.1 sec to 10 sec.
  • the plates 16 of the pump disperger 12 can, for example, have a diameter in the range from approximately 0.5 m to approximately 2 m.
  • the two plates 16 of the pump disperger 12 rotating relative to one another preferably have a relative speed in the radial outside in the range from approximately 20 to approximately 100 m / sec and preferably in the range from approximately 40 to 60 m / sec.
  • the mutual distance between the two plates 16 rotating relative to one another can be, for example, in a range from approximately 0.5 mm to approximately 10 mm, it preferably being approximately 5 mm.
  • the pump disperger 12 can have a
  • Plug screw 18 may be connected upstream in order to compress the fiber suspension to form a plug.
  • the plug screw 18 can be a feed Be screw 20 upstream, which is arranged in an at least substantially cylindrical channel or housing 22.
  • the cylindrical channel 22 can have a connection 24 for supplying a mixture which, for example, consists at least of the fiber suspension, water and calcium oxide and / or calcium hydroxide.
  • the plug screw 18 is rotatably arranged in a conical channel 26, the cross section of which tapers in the material flow direction S in order to compress the fiber suspension to form a plug in a channel 28 which adjoins the plug screw 18 and is arranged immediately upstream of the pump disperger 12.
  • This channel 28 arranged directly in front of the pump disperger 12 can be provided with a screw conveyor 30.
  • the channel 28 located directly in front of the pump disperger 12 can have a connection 32 for introducing carbon dioxide.
  • carbon dioxide can be introduced in particular in the end region of the plug and / or in the inlet region of the pump disperger 12 and / or in a central, radially inner region of the pump disperger 12.
  • the stopper seals the pump disperger 12 from the feed screw 20.
  • the channel 20 of the feed screw 20 upstream of the plug screw 18, the channel 26 of the screw plug 18 and / or the channel 28 arranged directly in front of the pump disperger 12 can be under a slight excess pressure.
  • the screws 18, 20, 30 can sit on a common drive shaft 34 or can at least partially be driven separately.
  • the pump disperser 12 can in particular form a reactor for converting the starting materials calcium oxide or calcium hydroxide and carbon dioxide into the reaction products calcium carbonate and water.
  • the fibrous suspension is transported radially outward and loaded with calcium carbonate.
  • the real speed of the two opposing plates 16 or structured surfaces is preferably adjustable, with at least one plate rotating.
  • the absolute speed can also be adjustable.
  • the discharge speed can be influenced.
  • a swirl cross 36 is provided, by means of which the plug is loosened and the surfaces of the fiber material are correspondingly enlarged.
  • the carbon dioxide connection 32 is expediently arranged such that the carbon dioxide can be fed to the area in which the plug is dissolved.
  • the opposing structured surfaces 16 generate shear forces in the fibrous material, which increases the contact area of the reactants and thus ensures a quick and efficient reaction.
  • the pump disperger 12 can have an outlet 38, which is arranged at least substantially tangentially to the plates or structured surfaces 16, for the loaded fiber suspension.
  • This outlet 38 need be no downstream restrictor ⁇ or shut-off, since the flow resistance of the re- action channel 14 accepts this function 16 between the structured surfaces.
  • the line can be connected directly to the next process section become.
  • a carbon dioxide feed line can be provided in the area of the outlet 38 in order to be able to adjust the pH value required for the next process step accordingly.
  • the pump disperser 12 can have an inlet 40 arranged at least substantially tangentially to the plates or structured surfaces 16 for diluting the loaded substance with water and / or calcium hydroxide, in particular from an upstream substance thickening, to less than 6%, preferably 3% to 6 % own. Appropriate dilution makes the fabric pumpable again.
  • the pump disperger 12 can be provided with a heating device by means of which the reaction temperature can be influenced.
  • the pulp suspension is produced, for example, by dissolving pulp or waste paper with additives in a pulper 42 or as a non-dried pulp, which is also referred to as "never tried pulp", fed to the loading process, e.g. from another pulp factory.
  • Calcium oxide and / or calcium hydroxide are added to the fiber suspension in a mixing container 44, in which the mixture in question is then mixed.
  • the swelling time can be, for example, 0.5 minutes to about 4 hours and preferably about 3 minutes to about 1 hour.
  • the pulp suspension is then compressed to form a plug, into ⁇ particular in the end region of the compression and / or at the entry region of serving as a reactor Pumpdispergers 12 and / or in a central region of Pumpdispergers 12 carbon dioxide is introduced , Through the swirl cross 36 the material to dissolve the graft is frayed, which increases the contact area accordingly. Shear forces are applied in the reaction channel 14.
  • the fibrous suspension is transported radially outward, the flow speed in the pump disperser 12 forming a reactor or a radial diffuser being reduced in order to ensure that the reaction at the end of the reactor 12 is completed by the corresponding increase in the contact time.
  • the pH can optionally be adjusted by adding carbon dioxide in the area of the outlet 38.
  • Calcium oxide and / or calcium hydroxide (slaked lime) is thus added to the fiber material in such a way that at least a part thereof coincides with that in the fiber material, i.e. water can associate between the fibers, in the hollow fibers and in their walls, the following chemical reaction occurring:
  • the fiber material is then exposed to carbon dioxide (CO 2 ) in such a way that calcium carbonate (CaCO 3 ) is largely deposited on the wetted fiber surfaces.
  • CO 2 carbon dioxide
  • CaCO 3 calcium carbonate
  • the pH Value of the fiber suspension is regulated and / or controlled accordingly.
  • the respective pH value can be measured at the end of the reaction and compared with a predeterminable target value in order to subsequently reduce or eliminate the control deviation, for example using at least one of the following process parameters: addition of calcium hydroxide, addition of carbon dioxide, material throughput and / or the like ,
  • the reaction can be started in particular at a pH of about 10 to about 13 and the reaction can in particular be regarded as complete when the pH is about 7.5.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

L'invention concerne un procédé et un dispositif d'introduction d'une charge dans des fibres contenues dans une suspension de matière fibreuse au moyen d'une réaction de précipitation chimique. Selon ledit procédé, la suspension de matière fibreuse est alimentée dans un disperseur à pompe, et soumise dans ce dernier à des forces de cisaillement de manière à fractionner des agglomérats fibreux de taille supérieure en agglomérats de taille inférieure, voire en fibres individuelles. A cet effet, ledit disperseur à pompe est employé simultanément en tant que réacteur pour la réaction de précipitation chimique.
PCT/EP2002/001622 2001-02-16 2002-02-15 Procede et dispositif d'introduction d'une charge dans des fibres contenues dans une suspension de matiere fibreuse WO2002072945A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02729928A EP1366232A2 (fr) 2001-02-16 2002-02-15 Procede et dispositif d'introduction d'une charge dans des fibres contenues dans une suspension de matiere fibreuse
CA002438607A CA2438607A1 (fr) 2001-02-16 2002-02-15 Procede et dispositif d'introduction d'une charge dans des fibres contenues dans une suspension de matiere fibreuse
US10/641,061 US20040154771A1 (en) 2001-02-16 2003-08-14 Method and device for loading fibers in a fiber stock suspension with a filler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10107448.4 2001-02-16
DE10107448A DE10107448A1 (de) 2001-02-16 2001-02-16 Verfahren und Vorrichtung zum Beladen von in einer Faserstoffsuspension enthaltenen Fasern mit einem Füllstoff

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/641,061 Continuation US20040154771A1 (en) 2001-02-16 2003-08-14 Method and device for loading fibers in a fiber stock suspension with a filler

Publications (2)

Publication Number Publication Date
WO2002072945A2 true WO2002072945A2 (fr) 2002-09-19
WO2002072945A3 WO2002072945A3 (fr) 2003-09-12

Family

ID=7674380

Family Applications (1)

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PCT/EP2002/001622 WO2002072945A2 (fr) 2001-02-16 2002-02-15 Procede et dispositif d'introduction d'une charge dans des fibres contenues dans une suspension de matiere fibreuse

Country Status (5)

Country Link
US (1) US20040154771A1 (fr)
EP (1) EP1366232A2 (fr)
CA (1) CA2438607A1 (fr)
DE (1) DE10107448A1 (fr)
WO (1) WO2002072945A2 (fr)

Cited By (3)

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WO2005005726A1 (fr) * 2003-07-15 2005-01-20 Upm-Kymmene Corporation Procede de fabrication de papier et papier
WO2005005725A1 (fr) * 2003-07-15 2005-01-20 Fp-Pigments Oy Procede et appareil permettant de pretraiter un materiau fibreux a utiliser dans la fabrication du papier, du carton ou analogue
WO2005014934A2 (fr) * 2003-08-05 2005-02-17 Voith Paper Patent Gmbh Procede pour introduire une charge dans une suspension de matiere fibreuse et dispositif pour la mise en oeuvre dudit procede

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AT411604B (de) * 2002-03-27 2004-03-25 Andritz Ag Maschf Verfahren und vorrichtung zur dispergierung eines papierfaserstoffes
DE10302783A1 (de) * 2003-01-24 2004-08-12 Voith Paper Patent Gmbh Verfahren zur Erzeugung einer für die Herstellung einer Tissue- oder Hygienebahn bestimmten Faserstoffsuspension
DE10317722A1 (de) * 2003-04-17 2004-11-11 Voith Paper Patent Gmbh Verfahren zum Beladen einer Faserstoffsuspension mit Kalziumkarbonat und Anordnung zur Durchführung des Verfahrens
DE10325688A1 (de) * 2003-06-06 2004-12-23 Voith Paper Patent Gmbh Verfahren zum Beladen einer Faserstoffsuspension mit Kalziumkarbonat und Anordnung zur Durchführung des Verfahrens
DE10347920A1 (de) * 2003-10-15 2005-05-19 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Beladen einer Faserstoffsuspension
DE10347919A1 (de) * 2003-10-15 2005-05-19 Voith Paper Patent Gmbh Verfahren zum Einstellen eines pH-Werts und Maschine zur Herstellung einer Faserstoffbahn
DE10351292A1 (de) * 2003-10-31 2006-02-02 Voith Paper Patent Gmbh Verfahren zum Beladen einer Faserstoffsuspension und Anordnung zur Durchführung des Verfahrens
DE102004060405A1 (de) * 2004-12-14 2006-07-06 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Beladen von in einer Suspension enthaltenen Fasern oder enthaltenem Zellstoff mit einem Füllstoff
DE102005002638A1 (de) * 2005-01-20 2006-07-27 Voith Paper Patent Gmbh Aschebestimmung
EP1790615A1 (fr) * 2005-11-29 2007-05-30 Trading engineering technologies LLC Procédé de production de carbonat de calcium précipité
DE102007018240A1 (de) * 2007-04-18 2008-10-23 Voith Patent Gmbh Verfahren zur Bildung von Calciumcarbonat in einer Faserstoffsuspension
DE102007028539A1 (de) * 2007-06-21 2008-12-24 Voith Patent Gmbh Verfahren zum Bilden von Calciumcarbonat in einer Faserstoffsuspension
DE102007028540A1 (de) * 2007-06-21 2008-12-24 Voith Patent Gmbh Verfahren zum Bilden von Füllstoffen, insbesondere Calciumcarbonat in einer Faserstoffsuspension
DE102007057846A1 (de) 2007-11-30 2009-06-04 Voith Patent Gmbh Verfahren zur Entfernung von Farbpartikeln, insbsondere Druckfarbenpartikel aus einem Faserstoff
DE102008000047A1 (de) 2008-01-14 2009-07-16 Voith Patent Gmbh Verfahren zur Erhöhung des Weißgrades einer füllstoffhaltigen Fasersuspension
FI125278B (fi) * 2010-08-20 2015-08-14 Upm Kymmene Corp Menetelmä kalsiumkarbonaatin saostamiseksi sekä menetelmän käyttö
CN112481008B (zh) * 2020-12-21 2022-06-28 山东恒利热载体工程技术有限公司 一种耐高温沉淀拮抗剂的生产工艺

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DE10033979A1 (de) * 2000-07-13 2002-01-24 Voith Paper Patent Gmbh Verfahren zum Beladen von Fasern mit Calciumcarbonat

Cited By (9)

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Publication number Priority date Publication date Assignee Title
WO2005005726A1 (fr) * 2003-07-15 2005-01-20 Upm-Kymmene Corporation Procede de fabrication de papier et papier
WO2005005725A1 (fr) * 2003-07-15 2005-01-20 Fp-Pigments Oy Procede et appareil permettant de pretraiter un materiau fibreux a utiliser dans la fabrication du papier, du carton ou analogue
GB2420793A (en) * 2003-07-15 2006-06-07 Upm Kymmene Corp A method for manufacturing paper and paper
GB2420793B (en) * 2003-07-15 2007-11-28 Upm Kymmene Corp A method for manufacturing paper and paper
AU2004256243B2 (en) * 2003-07-15 2010-03-04 Fp-Pigments Oy Method and apparatus for pre-treatment of fibre material to be used in the manufacture of paper, board or the like
US8282780B2 (en) 2003-07-15 2012-10-09 Fp-Pigments Oy Method and apparatus for pre-treatment of fibre material to be used in the manufacture of paper, board or the like
US8480855B2 (en) 2003-07-15 2013-07-09 Fp-Pigments Oy Method and apparatus for pre-treatment of fibre material to be used in the manufacture of paper, board or the like
WO2005014934A2 (fr) * 2003-08-05 2005-02-17 Voith Paper Patent Gmbh Procede pour introduire une charge dans une suspension de matiere fibreuse et dispositif pour la mise en oeuvre dudit procede
WO2005014934A3 (fr) * 2003-08-05 2005-06-09 Voith Paper Patent Gmbh Procede pour introduire une charge dans une suspension de matiere fibreuse et dispositif pour la mise en oeuvre dudit procede

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US20040154771A1 (en) 2004-08-12
WO2002072945A3 (fr) 2003-09-12
CA2438607A1 (fr) 2002-09-19
EP1366232A2 (fr) 2003-12-03
DE10107448A1 (de) 2002-08-22

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