WO2015142294A1 - Chambre de collecte et procédé de formation de fibres - Google Patents

Chambre de collecte et procédé de formation de fibres Download PDF

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Publication number
WO2015142294A1
WO2015142294A1 PCT/SI2014/000016 SI2014000016W WO2015142294A1 WO 2015142294 A1 WO2015142294 A1 WO 2015142294A1 SI 2014000016 W SI2014000016 W SI 2014000016W WO 2015142294 A1 WO2015142294 A1 WO 2015142294A1
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WO
WIPO (PCT)
Prior art keywords
collecting chamber
shot
fiber
drum
collecting
Prior art date
Application number
PCT/SI2014/000016
Other languages
English (en)
Inventor
Marko PETERNELJ
Primož MIHALIČ
Brane ŠIROK
Original Assignee
Izoteh D.O.O.
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 Izoteh D.O.O. filed Critical Izoteh D.O.O.
Priority to PCT/SI2014/000016 priority Critical patent/WO2015142294A1/fr
Publication of WO2015142294A1 publication Critical patent/WO2015142294A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/736—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged characterised by the apparatus for arranging fibres
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
    • C03B37/05—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor by projecting molten glass on a rotating body having no radial orifices
    • C03B37/055—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor by projecting molten glass on a rotating body having no radial orifices by projecting onto and spinning off the outer surface of the rotating body
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D04H1/4226—Glass fibres characterised by the apparatus for manufacturing the glass fleece
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay

Definitions

  • Homogene structure of primary layer of fiber deposited within melt fiberization apparatus is tantamount to high quality of final product, i.e. mineral wool panels.
  • final product i.e. mineral wool panels.
  • spinner i.e. device comprised of spinning wheels onto which melt is falling to be expelled in form of droplets enlogating into fibers
  • secondary air flows induced by suction fans from collecting chamber.
  • quality of finished product is decreased if shot is present within the structure - this shot formed by frozen droplets of mineral melt which do not elongate into fibers.
  • shots are between 10 to 30 micrometers in diameter.
  • other forms or clumps can be present resulting from various interactions between melt flow and air flow next to spinning wheels.
  • Mineral wool fiberization apparatus depends on flow of fiber which is created by elongation of mineral melt droplets after ejection from spinning wheels of said melt fiberization apparatus.
  • a typical fiberizing apparatus in state of the art is described in EP 1409423.
  • Typical apparatus of the sort of 3 to 4 fiberizing rotating wheels also known as the spinning wheels, or rotating wheels (term used in this patent application for description of new invention), or rotors.
  • fiberizing apparatus is customary connected to a collecting chamber for collecting mineral fiber, equipped with some sort of mechanism for continuous collecting mineral fiber, for instance conveyor belt or preferably rotating drum.
  • the mineral melt discharged from the melting furnace or similar device for heating up and melting raw materials used in mineral wool formation forms a nearly vertical melt stream as it is poured onto the spinning machine.
  • the melt stream is directed towards the mantle surface of the first wheel where it partly adheres to the surface, is drawn in motion and forms a melt film.
  • a part of the melt forms, with the aid of the centrifugal force, liquid ligaments that solidify to the mineral wool fibers while the remaining quantity of the melt is thrown out as a cascade of drops against the mantle surface of the adjacent second wheel in the series.
  • Binder may be applied on the formed mineral fibers, either during fiber formation or afterwards, in form of a droplet spray.
  • the mineral fibers formed on the wheels of the spinning machine are transported away from the point of origin on the melt film, initially in the radial direction due to the centrifugal force.
  • the fibers As the fibers enter the zone of the coaxial air flow generated by the spinning machine fan, i.e. the blow-in flow, they are drawn in predominantly axial motion and transported to the collecting chamber where the primary layer of the mineral wool is formed.
  • Mass fraction of fiber in air flow is relatively small requiring rather large air flow, and due to high velocity of blow-off on spinner nozzles also increased volumetric flow of suction from the collecting chamber in order to reduce or preempt turbulence, vortices, or recirculation.
  • For fiber formation on the spinner one needs air velocities up to 150 m/s.
  • the velocity of air through the pores or holes in the conveyer belt or drum transporter is much lower, between 4-10 m/s as higher velocity would cause short fibers to exit through the pores or tearing of primary layer of deposited fiber. Comparing these values results in conclusion that there are relatively high velocity gradients requing optimization of geometry of inlet part of collecting chamber.
  • Collecting chamber and fiber formation method solve above referenced technical problem by slanting at least one wall or ceiling of a collecting chamber in order to reduce onset of vortices and recirculation especially at high mass flow of fiber and high velocity gradients of multi phase flow in such a way that the channel so formed is essentially divergent above a plane, said plane defined by connecting axis of a drum of drum assembly and center of the first spinning wheel.Further, by adding shot collectors, amount of shots in final product is reduced and therefore the thermal and mechanical properties of a final product are better. In addition, adding regulation slats in front of collecting chamber and (or) adding balancing air flow within drum assembly further reduce vortices and recirculation of fibers within the collecting chamber. Basic goals of proposed solution are:
  • Fiberizing apparatus for fiberization of mineral melt is comprised of a spinner comprising rotating wheels, and of collecting chamber.
  • Collecting chamber collects mineral fiber which is transported from said collecting chamber using collection means such as conveyer belt, or drum, or similar.
  • Collecting chamber in accordance with this invention is constructed to meet basic goals of proposed solution.
  • Collecting chamber can be roughly separated into three parts: inlet part, middle part, and exit part.
  • Inlet part comprises shot collectors for catching shot ejected from rotating wheels, and converging part of collecting chamber.
  • Middle part comprises diverging walls and ceiling - this can be achieved by at least one slanted surface be it either ceiling, either side wall, or even bottom.
  • Exit part comprises drum assembly with preferably perforated surface. Drum of drum assembly rotates and collects fiber deposited by air flow onto its mantle surface.
  • any part of these three part collecting chamber has independent properties giving it an advantage, i.e., only inlet part of collecting chamber can be combined with state of the art middle and exit parts of collecting chambers (former featuring simple design comprised of essentially straight ceiling, walls, and bottom, and latter usually featuring conveyer belt rather than drum). Same is true for middle, and exit parts of collecting chamber in accordance with this invention - they can be combined with state of the art inlet part, or exit part, or middle part. However, best results were achieved by combining all features of collecting chamber into single collecting chamber assembly.
  • Shot collectors are chambers positioned strategically around perimeter of the spinning wheels of said centrifuge.
  • Melt breaks up into droplets, and these are either elongated into fibers, or cooled prematurely, and remain in form of frozen droplets, so called shots.
  • Air flowing in direction from spinner toward collecting chamber exit entrains fibers but cannot entrain shots. Said shots therefore flies from the spinning wheels in general lateral direction.
  • collecting chambers said shots ricochets from the walls thus interfering with air entrained fiber flow, or disrupts formation of primary layer of fiber within exit part of collecting chamber, or gets imbedded into primary layer thus reducing its quality.
  • shot collectors are chambers with openings arranged to face the spinning wheels. In principle they could be arranged around whole perimeter of collecting chamber, however, sufficient results were achieved by placing one shot collector on the top of collecting chamber, and two on either side of said collecting chamber.
  • the opening of these shot collectors can be either of variable size, or constant. Shot accumulated in these shot collectors should be removed either continuously or by batch. Continuous removal can be achieved by means of a transporter. Worm transporters are convenient, and robust, so they are preferred.
  • wear resistant protective panels may be attached to the walls, and walls themselves can be shaped in a shape most effectively reducing the momentum of shots: for example they can be curved.
  • air inlets can be added in order to stabilize the flow field.
  • These openings can be regulated by louvers, or by slats which may be slanted at an angle thus serving as air routers giving entering air direction as well as regulating amount of air entering the collecting chamber.
  • Middle part of collecting chamber is crucial for developing the flow field.
  • Flow field has direct influence on quality of fibers.
  • Vortices, and recirculation are undesirable as they result in lower quality fiber primary layer deposited onto drum assembly surface.
  • Fibers, as stated, are entrained by air flow. If such flow starts to swirl and recirculate this tends to clump many fibers together resulting in non uniform fiber deposition, clods forming and by this lowering product yield..
  • vortices and recirculation tend to deposit fiber onto the walls and ceiling (and bottom) of the collecting chamber rather than onto the drum surface.
  • middle part of the collecting chamber should be constructed to reduce vortices and recirculation.
  • One of possibilities is to streamline the flow by means of shaping collecting chamber in general form of a nozzle, for example, Venturi.
  • the walls and the ceiling can be slanted in order to first reduce cross section of said collecting chamber, and then gradually expand cross section of said collecting chamber.
  • Reduction is achieved by reduction of cross section behind shot collectors, and enlargement by slanting at least one of the following: the ceiling, the sides, the bottom of said collecting chamber. Best results were achieved by slanting the ceiling and the sides while keeping the bottom in its usual form for other reasons of practicality.
  • said collecting chamber is comprised of walls, bottom, and ceiling, comprising at least one of the following: slanted side wall, slanted ceiling, slanted bottom; said collecting chamber having general divergent duct properties diverging in direction from inlet into said collecting chamber to exit from said collecting chamber.
  • the problems of deposition of fiber onto side walls and ceiling of the collecting chamber may be increased by fact that fibers are treated with binder to help with formation of mineral wool products. Fibers therefore tend to deposit onto the side walls, and stay bonded. This can be prevented by condensation of said walls - this can be achieved by cooling the walls and/or the ceiling to temperatures below dew point temperature.
  • Exit part of the collecting chamber is also very important as it comprises drum assembly, said drum assembly comprising drum with preferably perforated perimeter surface, and open to the sides, for depositing primary layer of fiber onto the perimeter surface of said drum.
  • the drum is simply rotating while the fibers are deposited.
  • axial fan can be used on the inside of the drum creating balancing air flow in direction toward or away from the perimeter surface of said drum.
  • said fan can be mounted pivotally so optimum angle of balancing flow can be found.
  • a tube with air outlet on one side can be used to achieve the same result.
  • part of perimeter surface of the drum can be blocked effectively by erecting a screen on the inside of the drum further influencing the flowfield within the drum and deposition of fiber onto the drum surface by preventing air flow through the holes or pores of perforated surface of collecting means.
  • This screen can be curved, and it can have pointed edge with angle (28) from -45° to 45°. Also, the screen can be hinged in order to find the optimum position of this edge.
  • Fig. 1 shows side view longitudinal cross section of collecting chamber according to this invention, and shows entrance part of collecting chamber (I) , middle part of collecting chamber (II), exit part of collecting chamber (III), spinner assemby (1), air flow out of spinner assembly (2), spinning wheels (3), direction of shots from spinning wheels toward shot collector (4), walls of shot collector (5), top shot collector (6), top shot collector transporter (7), transition wall between top shot collector and ceiling (8), collecting chamber (9), flow of formed fibers (10), ceiling of collecting chamber (1 1), top sealing roller (12), finished primary fiber layer (13), drum assembly (14), primary fiber layer during formation (15), bottom sealing roller (16), bottom waste transporter (17).
  • Fig. 2 shows top view longitudinal cross section of collecting chamber according to this invention, and shows entrance part of collecting chamber (I) , middle part of collecting chamber (II), exit part of collecting chamber (III), spinner assemby (1), collecting chamber (9), primary fiber layer during formation (15), adjustable entry width of side shot collector (18), outer side shot collector wall (19), side shot collector (20), transition wall between side shot collector and collecting chamber slanted side wall (21), slanted side wall (22), exit air channel (23), air flow through exit air channel (24).
  • Fig. 3 shows side view longitudinal cross section of collecting chamber according to this invention, and shows axial fan (25), angle of said axial fan between its rotational axis and horizontal line(26).
  • Fig. 4 shows top view longitudinal cross section of collecting chamber according to this invention, and shows axial fan (25).
  • Fig. 5 shows top view longitudinal cross section of collecting chamber according to this invention, and shows screen (27).
  • Fig. 6 shows side view longitudinal cross section of collecting chamber according to this invention, and shows screen (27) with edge (A), angle of edge (28), slats (29), angle of slats (30).
  • axial fan (25) can be replaced by a duct starting at position where said axial fan (25) is presented in figure 3, and extending outward of said collecting chamber, with an axial fan and optionally a filter installed anywhere inside of said duct.
  • said collecting chamber (9) is comprised of entrance part of said collecting chamber (I) close to the spinning wheels (3) , middle part of said collecting chamber (II) between said spinning wheels and a drum assembly (14) and exit part of said collecting chamber (III) comprising said drum assembly (14).
  • Preferred embodiment according to this invention comprises middle part (II) of collecting chamber (9) comprising collection section formed in general form of diverging duct comprising at least one slanted side wall (22), in preferred embodiment two slanted side walls (22) forming an angle with each other, said angle between 5° and 45°, preferably between 10° and 30°, more preferably around 20°.
  • said collection section may instead or in addition to slanted wall or plurality thereof further comprise a ceiling (1 1), preferably slanted, also forming general form of diverging duct above imaginary plane connecting axis of said drum of said drum assembly (14) and center of the first spinning wheel, said ceiling forming an angle with axis essentially parallel to the first spinning wheel axis between 5° and 50°.
  • said collecting chamber is narrowed close to the rotating wheels, and widened further on thus giving rise to effect similar to that of a Venturi tube meaning that the velocity of exiting air entraining forming fiber is increased close to the rotating wheels, and then gradually decreased with low gradient toward collecting surface. This results in prevention of creation of coherent- vortex structure and reverse flow of fibers formed in the process.
  • Preferred embodiment may also comprise a shot collector (6, 20) providing for catching of shots (4) formed during fiberization process.
  • a shot collector (6, 20) providing for catching of shots (4) formed during fiberization process.
  • There may be a single shot collector (6, 20) or plurality therof.
  • Said shot collector (6, 20) can be positioned either at the top (6), or at side (20) of a collecting chamber. Actual form of said shot collector (6, 20) depends on its position.
  • Top shot collector (6) comprises a channel used for directing said shots (4) onto a transporter means, preferably a worm (7) for transporting said shot (4) out of a collecting chamber.
  • Side shot collector (20) comprises walls slowing down said shot (4) on impact and directing said shots (4) onto the bottom of said collecting chamber, said bottom further comprising at least one transporter means, preferably a worm (17) for transporting said shots (4) out of a collecting chamber.
  • Said walls are preferably in curved shape to more efficiently reduce momentum of said shot (4), to reduce wear as a result of said shots (4) impinging onto said walls, and/or to reduce noise as a result of said shots (4) impinging onto said walls. Further, to protect said walls there are wear resistant protective panels connected to said walls. Same can be applied to top shot collector (6) as well.
  • Said shot collector can have either fixed or variable entrance size, however, best results were achived with entrance width size between 100 and 1000 mm. The diameter of said worms are between 50 and 500 mm.
  • Preferred embodiment may also comprise axial fan (25) inside said drum assembly (14) within exit part (III) of said collecting chamber (9).
  • Said axial fan (25) can blow air toward or away from the inlet of the chamber and balance air flow helping with formation of primary layer (15) on surface of said drum assembly (14).
  • said surface of said drum assembly (14) is made of perforated or porous material able to let air through.
  • axial fan (25) can have adjustable air flow in order to achieve optimum balancing air flow velocity.
  • Said adjustable air flow of said axial fan is preferably achived by frequency regulation.
  • Said axial fan (25) can be pivotaly mounted in order to be tilted to achieve best results.
  • Preferred embodiment may also comprise a screen (27) comprising an edge (A) for preventing air flow through holes or pores of said perforated walls of said drum of said drum assembly (14) .
  • This screen may be movable about an axis for an angle (28).
  • Preferred embodiment may also comprise at least one slat (29) for routing air flow entering said collecting chamber (9) further alleviating problem of coherent-vortex structure.
  • Each of said slats (29) can be individually adjusted for appropriate angle (30) serving to optimize (reduce) said vortices within said collecting chamber (9).
  • Preferred embodiment further comprises forced cooling of at least part of walls of said collecting chamber by coolant, preferably with water, said water having temperature between 1°C and 20°C, preferably between 5°C and 15°C. Cooled inside wall surface reduces temperature of air close to said wall surface resulting in formation of condensation. Said condensation on said walls (22) and ceiling (11) in turn prevents bonding of binder treated fibers to the inside of said walls (22) of said collecting chamber.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

L'invention concerne une chambre de collecte et un procédé de formation de fibres pour résoudre les problèmes techniques tels que la formation de tourbillons et de recirculations à l'intérieur de la chambre de collecte de l'appareil de défibrage à chaud, le collage de fibres au niveau des parois de la chambre de collecte, la présence de grenaille dans une couche primaire de fibres déposée sur la paroi périmétrique d'un tambour de collecte de la chambre de collecte, et le dépôt non uniforme de fibres dans la couche primaire de fibres déposée sur la paroi périmétrique du tambour de collecte de la chambre de collecte par l'inclinaison d'au moins une paroi ou un plafond d'une chambre de collecte afin de réduire l'apparition de tourbillons et de la recirculation en particulier à un débit massique élevé des fibres et de hauts gradients de vitesse d'écoulement à plusieurs phases. En outre, par l'ajout de collecteurs de grenaille, la quantité de grenaille réduisant les propriétés de transfert de chaleur des fibres est réduite. De plus, l'ajout de lattes pour une entrée d'air supplémentaire afin de réduire plus encore les tourbillons et la recirculation, tout en ajoutant un écoulement d'air d'équilibrage induit par ventilateur à l'intérieur de l'ensemble de tambour constitué d'une surface perforée contribue à la solution du problème technique en question. Les objectifs de base de la solution proposée sont : atteindre un débit massique élevé des fibres avec de faibles tourbillons et une faible recirculation, et avec un minimum de déchirure de la couche primaire de fibres collectées sur la surface du tambour de la chambre de collecte, et la séparation de la grenaille en provenance des fibres dès le début du transport de fibres en provenance d'un métier à filer.
PCT/SI2014/000016 2014-03-17 2014-03-17 Chambre de collecte et procédé de formation de fibres WO2015142294A1 (fr)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017121770A1 (fr) * 2016-01-15 2017-07-20 Thermal Ceramics Uk Limited Appareil et procédé pour former des fibres inorganiques formées à l'état fondu
WO2018048359A1 (fr) * 2016-09-06 2018-03-15 Izoteh D.O.O. Chambre de collecte comprenant au moins une paroi réglable et procédé de collecte de fibre de laine minérale
CN108914370A (zh) * 2018-06-21 2018-11-30 苏州宏久航空防热材料科技有限公司 一种陶瓷棉双层分离集棉室
WO2019199236A1 (fr) 2018-04-11 2019-10-17 Izoteh D.O.O. Appareil de défibrage comprenant des roues tournantes et procédé de défibrage par fusion
CN111295470A (zh) * 2017-09-01 2020-06-16 帕罗克集团有限公司 用于制造矿棉以及矿棉产品的设备和方法
CN114960038A (zh) * 2022-06-08 2022-08-30 湖州创塑新材科技有限公司 一种熔喷布生产用熔喷设备均匀负压滚筒式成网机
CN115196867A (zh) * 2022-03-31 2022-10-18 安徽工业大学 一种熔融高炉渣制渣棉收集装置

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561843A (en) * 1948-07-06 1951-07-24 Johns Manville Apparatus for fiber collection
US2991499A (en) * 1955-12-29 1961-07-11 Johns Manville Method and apparatus for forming mineral wool
FR1576619A (fr) * 1967-06-15 1969-08-01
GB1516279A (en) * 1976-01-19 1978-06-28 Rockwool Ab Conveying and depositing mineral fibres to form a mat
GB1539479A (en) * 1976-07-02 1979-01-31 Rockwool Ab Method for controlling the speed of a collector band in the production of mineral wool as well as an arrangement for execution of said method
US4494970A (en) * 1980-04-25 1985-01-22 Bayer Aktiengesellschaft Apparatus for production of fiber mats
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WO2019199236A1 (fr) 2018-04-11 2019-10-17 Izoteh D.O.O. Appareil de défibrage comprenant des roues tournantes et procédé de défibrage par fusion
CN108914370A (zh) * 2018-06-21 2018-11-30 苏州宏久航空防热材料科技有限公司 一种陶瓷棉双层分离集棉室
CN115196867A (zh) * 2022-03-31 2022-10-18 安徽工业大学 一种熔融高炉渣制渣棉收集装置
CN115196867B (zh) * 2022-03-31 2023-11-24 安徽工业大学 一种熔融高炉渣制渣棉收集装置
CN114960038A (zh) * 2022-06-08 2022-08-30 湖州创塑新材科技有限公司 一种熔喷布生产用熔喷设备均匀负压滚筒式成网机

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