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WO1991010626A1 - Appareil et procede de filage - Google Patents

Appareil et procede de filage Download PDF

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Publication number
WO1991010626A1
WO1991010626A1 PCT/EP1991/000085 EP9100085W WO9110626A1 WO 1991010626 A1 WO1991010626 A1 WO 1991010626A1 EP 9100085 W EP9100085 W EP 9100085W WO 9110626 A1 WO9110626 A1 WO 9110626A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
edge
binder
ejector
air
Prior art date
Application number
PCT/EP1991/000085
Other languages
English (en)
Inventor
Jens Chr. Gamborg Hansen
Svend GROVE-RASMÜSSEN
Lone Møller SØRENSEN
Original Assignee
Rockwool International A/S
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 Rockwool International A/S filed Critical Rockwool International A/S
Publication of WO1991010626A1 publication Critical patent/WO1991010626A1/fr

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10—Coating
    • C03C25/12—General methods of coating; Devices therefor

Definitions

  • One way of making bonded sheets of mineral wool comprises applying mineral melt to a solid peripheral surface of a fiberising rotor off which the melt is thrown centrifugally as fibres, supplying air at the axially rearward edge of the rotor surface as an axially moving stream that entrains the fibres and carries them off the axially forward edge of the rotor, spraying binder to the fibres, and collecting the fibres and binder on an appropriate conveyor.
  • the axial airstream is supplied from a slot or other appropriate air supply means arranged adjacent the rearward edge of the rotor surface.
  • a slot or other appropriate air supply means arranged adjacent the rearward edge of the rotor surface.
  • the air is forced through the slot at high speed.
  • Such a process is described in, for instance, GB 867,299.
  • GB 1,559,117 A different type of apparatus is described in GB 1,559,117.
  • the inner diameter of the slot is preferably the same as the outer diameter of the rotor.
  • the effect of this is to create a "wall jet", i.e., a flow of air along the surface of the rotor in which the highest velocity is at a position very close to the rotor.
  • This is in contrast with the velocity profile obtained when the slot is radially distant from the rotor, since the maximum velocity is then at a position that is radially spaced from the rotor by a substantial distance.
  • Different product qualities are obtained by the different methods.
  • the binder can be sprayed on to the fibres from several different positions. Thus it can be be sprayed outwardly from a substantially axial position that can be close to the rotor or distant from the rotor, or it can be sprayed inwardly from spray nozzles arranged in a ring radially outwardly from the rotor or a combination of those methods.
  • a centrifugal ejector described for applying binder and comprises an ejector edge that is mounted adjacent to the axially forward edge of the rotor for rotation coaxial with the rotor.
  • a channel leads through the ejector to this centrifugal edge and rotation of the ejector causes the binder to be thrown outwardly, towards the fibres, as droplets off this edge.
  • this ejector edge should be at a radius that is at least 70% of the radius of the rotor and less than the radius of the rotor.
  • the air stream must move very fast and that the action of the gas current that is carrying the fibres has the effect of distributing large droplets of binder as a uniform coating on the fibres.
  • the binder droplets can be ten times the conventional size of sprayed binder droplets (30 ⁇ m) and can thus have an average of the order of 250 ⁇ m, and that these large droplets are broken down by the air stream.
  • binder droplets will depend upon the speed of rotation, the configuration of the ejector edge and the nature of the binder solution and opponents to EP 59152B have alleged that the proposed size range of 50 to 500 ⁇ m (with the average of the order of 250 ⁇ m) may not be justified and have suggested that the actual size may be somewhat smaller. Irrespective of this criticism, it is clear that U.S. 4,433,992 does require that the binder droplets should travel through space to reach the fibres as it is explained that the energy imparted to the drops must be sufficient to enable them to reach and penetrate this space.
  • the air stream must not be directly in contact with the rotor and the radial separation between the air supply orifices and the rotor surface is said to be preferably 25 to 100mm.
  • the only detailed description is of a process in which the rotor has a diameter of 458mm, the peripheral ejector edge has a diameter of 320mm (69.6% of the diameter of the rotor) and the air orifices are arranged at a diameter of 518mm.
  • there is a radial separation of 30mm between the rotor and the air orifices and the diameter of the rotor is 88.4% of the diameter of the ring of air orifices.
  • a wall jet effect is not obtained under the described conditions.
  • binder In all processes where binder is sprayed into mineral wool, it is of course desirable to obtain high bond strength using a minimum amount of binder at a high production rate, and it is desirable to obtain a product that has uniform dryness (without requiring expensive heating procedures) whilst minimising the escape of binder into the environment.
  • a problem that can arise with some binder systems is that they generate a wide range of particle sizes and, although the larger particles may satisfactorily be trapped by the fibres, the smaller particles may tend to escape from the spinning apparatus as an aerosol taken away by turbulence in the air around the binder ejector and it may be necessary to provide collecting apparatus to prevent the escape of these fine binder droplets into the environment.
  • the apparatus of the invention may be supplied as a spinning head, and this can be located in known manner in a spinning chamber to which melt can be fed and which can have an appropriate conveyor for collection of the fibres and binder as a sheet.
  • the binder droplets must have enough energy to travel across this radial gap and to penetrate the air stream, in the invention the binder droplets are thrown substantially directly from the ejector edge into the air stream, with substantially no radial gap between the edge and the air stream. Indeed any radial gap between the ejector edge and the inner diameter of the air stream should be made, in the invention, as small as possible and so preferably the ejector edge has a radius at least 95% of the radius of the edge of the air guide surface. In- practice the ejector edge generally has a diameter of substantially 100% of the said forward edge of the air guide surface. Although the diameter of the ejector edge can be up to 110%, it is generally unnecessary for it to be above 105% of the forward edge of the rotor.
  • the ejector edge has a radius of above 100% of the radius of the forward edge of the rotor, the ejector edge could form an outward step that will interfere with the desired flow of the air stream along the rotor surface and in these circumstances it is desirable to provide a deflector so as to deflect the air gently outwardly from the diameter of the rotor to the diameter of the peripheral ejector edge (or in some instances slightly more) .
  • the air guide surface then may consist of the rotor surface and the surface of the deflector.
  • the deflector may be fitted adjacent to the said forward edge of the rotor and may be an outwardly directed cone, the forward edge of the cone generally having a radius of up to 110%, typically 102 to 105%, of the radius of the forward edge of the rotor.
  • the ejector edge is the extreme edge of the deflector.
  • the rotor preferably has a substantially cylindrical surface. Generally it is a true cylinder but it may alternatively be an outwardly directed cone or an inwardly directed cone, with a very small cone angle. If it is cone shaped, e.g., with a relatively large cone angle, there may again be a deflector to guide the air that is travelling off the end of the rotor in a desired axial direction. The ejector edge must again be positioned so as to throw the binder direct into the air stream as it emerges from the forward edge of the rotor or, if present, the forward edge of any deflector.
  • the air guide surface generally consists solely of the surface of the rotor and, optionally, the outer surface of the ejector. Its shape must be such as to permit the desired wall jet effect to occur.
  • the rotor surface may be the surface of a spinning cup such as is described in, for instance, U.S. 4,468,241 or U.S. 2,944,284 wherein the cup has a substantially vertical axis and the air stream is directed as a wall jet along the outer surface of the cup.
  • Melt is supplied to the centre of the cup and overflows on to the outer surface off which fibres are thrown by centrifugal force and are carried away by the air stream.
  • the rotor surface is substantially cylindrical and the rotor is arranged with its axis substantially horizontal and the air supply means are arranged to supply air as a substantially cylindrical air stream having an internal diameter sufficiently close to the diameter of the cylindrical rotor that a wall jet effect can be obtained.
  • the rotor is one of a set of rotors each mounted for rotation about a different horizontal axis and arranged such that when the rotors are rotating melt poured on to the periphery of the top rotor in the set is thrown onto the periphery of each subsequent rotor in turn and fibres are thrown off the rotors.
  • there can be just two rotors in the set generally there are three and preferably there are four.
  • the air slot has an internal diameter the same as the external diameter of the rotor, for instance as illustrated in GB 1,559,117.
  • the wall jet effect can also be obtained if the air slot is displaced a very small amount outwardly, especially if it is inclined at a small angle on to the rotor, since it will then develop a wall jet after striking the rotor.
  • This effect can be promoted by shaping the substantially cylindrical rotor so as to minimise the angle of impact of the angled air stream on to the surface of the rotor, for instance in the general manner shown in W088/07980.
  • a wall jet is considered to exist when the air flow and speed of rotation of the rotor, in the absence of melt, are such that the maximum air speed occurs at a point as close to the rotor surface as is conveniently measurable. In practice it is not practicable to measure closer than, for instance, 5 or 10mm from the rotor surface and a wall jet is considered to exist when the air velocity decreases with increasing distance from this point.
  • a wall jet does not exist when, starting from 10mm above the rotor surface, the air velocity first increases substantially and then decreases with increasing radial distance from the rotor surface. Thus it is very simple, by measurement in the absence of the melt, to determine whether or not a wall jet is occurring.
  • the wall jet effect must occur in the region where the fibres are formed on the rotor since we believe this to be important for part of the success of the invention. As the air flows axially further along the rotor surface and any remaining part of the air guide surface the wall jet effect may start to dissipate but there will still be a considerable flow of air very close to the surface and fibres will be trapped in this flow.
  • the air flow through the slot or other air supply means will generally have a velocity in the range 50 to 250m/s, often 100 to 200m/s.
  • the air supply may be wholly axial or a tangential movement may be imparted to it as it emerges from the air supply means, for instance by the provision of vanes or other means for angling the air supply, e.g., as described in GB 1,559,117.
  • the binder droplets that are thrown off the ejector edge preferably have an average size below lOO ⁇ m and most preferably below 70 ⁇ m, typically 30 to 50 ⁇ m.
  • the ejector and the nature of the binder solution are such that the ejected binder contains substantially no droplets above 200 ⁇ m, most preferably none above 150 or even above lOO ⁇ m.
  • the ejector edge must be adjacent to the axially forward edge of the rotor or any deflector since the cylindrical air flow will tend to break down as it passesforward of the front edge and will create turbulence around the front edge.
  • the peripheral ejector edge is not more than 50mm, preferably not more than 20mm and most preferably at O to lOmm axially in front of the forward edge of the rotor or the deflector (if provided) .
  • the peripheral ejector edge does define the forward edge of the rotor or deflector and thus the axial distance is zero.
  • cooling water It is normal practice to pass a significant amount of cooling water through the rotor in order to cool its fiberising surface.
  • This water can be returned for cooling or wastage, as in U.S. 4,433,992 or can simply be pumped into the atmosphere in front of the rotor, but in the invention the cooling water is preferably used for diluting the binder prior to or during ejection from the ejector edge.
  • the resultant dilute nature of the binder promotes the formation of a small droplet size without necessitating the supply of large amounts of extra water along the axis of the ejector to the rotor, but the defined configuration of radii, and the small particle size, means that the binder droplets dry exceedingly rapidly and so the final product is dry despite the large amount of water pumped into the binder.
  • the dilute binder can be more easily formed with a very uniform particle size and in particular it is possible to minimise and substantially eliminate the formation of droplets are are so small as to cause aerosol problems, and possible environmental problems.
  • the binder is usually a conventional thermosetting composition.
  • it is dilutable by water.
  • it may be a phenol formaldehyde binder dissolved in water or a melamine formaldehyde binder or a urea formaldehyde binder or an inorganic binder or elastomeric or other synthetic polymeric binder.
  • the mineral melt that is coverted into mineral wool can be any of the melts that can be fiberised by centrifugal force off a spinning rotor. Although it could be of glass, preferably it is stone. Stone melt, as defined herein, is a relatively impure melt, that often contains iron and various mixed oxides, and is formed from materials such as rock, diabase, basalt, slag, limestone, dolomite, cement, clay, feldspar, sand or olivin.
  • a problem that arises with some centrifugal ejectors is fouling of the ejector.
  • it is preferred to minimise the risk of fouling by constructing the ejector such that the ejector edge is the outer edge of an annular, exposed, forward facing, ejector surface, and with means for distributing the binder substantially uniformly around the said exposed surface at a position that has a radius Rl that is below two thirds of the radius R2 of the ejector edge whereby the binders can flow from the said position over the said exposed surface to the said edge.
  • the binder flows over the exposed, forwardly facing, surface for a distance that is at least one third of the radius of the ejector edge, and is then thrown off the ejector edge as droplets by centrifugal force.
  • the means for distributing the binder are displaced inwardly so far that there is substantially no risk of blockage by fibres that may be moving inwardly turbulently from the edge of the rotor, due to the air turbulence at that point.
  • At least the outer one third of the travel of the binder is over the forward facing surface and so will protect the surface throughout this distance from any fibres that might otherwise contact it. Accordingly wear is reduced and, in particular, the risk of blockages is greatly reduced. Any fibres that come into contact with the surface will be carried outwardly to the peripheral edge, and thrown off the peripheral edge, with the binder.
  • the outermost third of the centrifugal ejector is self-cleaning.
  • Rl is below half, and often below two fifths, for instance one third or less, of R2 with the result that the outermost half or three fifths, or more, of the ejector is self cleaning.
  • R2 is at least 90% of R3 and most preferably it is 95 to 100% of R3.
  • the radius R2 of the ejector edge is often preferred for the radius R2 of the ejector edge to be at least as much as, and often slightly more than, the radius of the rotor at the point where the fibres are formed (for instance 95 to 110% of the radius of the rotor at that point) and in these circumstances the rotor should merge with an air guide surface that leads outwardly to the peripheral edge.
  • the means for distributing binder around the surface can comprise a conventional axial outlet slot from a duct that leads through the rotor, preferably the outlet opens peripherally instead of axially so as to discharge binder radially outwardly on to the surface.
  • This may be achieved by providing a duct that is closed at its end except for a peripheral slot.
  • the binder supply duct leads into a cup-shaped member that opens rearwardly against the surface and defines a peripheral slot with the exposed surface.
  • the duct leads to the base of the cup and there are means for causing the binder to flow backwards towards the peripheral slot between the duct and the cup. The resultant flow of binder back on to the surface (rather than through the surface as in conventional ejectors) is particularly desirable.
  • This type of self cleaning ejector can also be used in combination with other types of apparatus for making mineral wool.
  • Figure 1 is a front view of apparatus comprising a cascade of fiberising rollers;
  • Figure 2 is a section on the line II-II in Figure 1;
  • Figure 3 is a vertical section through an alternative type of apparatus
  • Figure 4 is part of a section similar to Figure 2 showing a different type of binder ejector;
  • Figure 5 is a detail of a modification of Figure 4;
  • Figure 6 is a section similar to Figure 2 showing a different type of binder ejector.
  • the apparatus of Figure 1 comprises a front plate 1 of a housing on which are mounted a cascade of fiberising rotors 2, 3, 4 and 5 arranged for rotation in the directions shown by the arrows.
  • Melt is poured on to rotor 2 from a furnace (not shown) . Some of the melt may be thrown off rotor 2 as fibres but the majority is thrown on to rotor 3. Some of the melt is thrown from rotor 3 to rotor 4 but some of the melt is thrown off rotor 3 as fibres. Similarly, some of the melt striking rotor 4 is thrown on to rotor 5 whilst other melt is thrown off as fibres.
  • the main fibre-forming areas of the rotors coincide with the slot 6 which serves to supply air from an air supply chamber 7 to the rearward edge 8 of the associated rotor (4 in Figure 2) .
  • the inner diameter of the air slot 6 is substantially identical with the outer diameter of the associated rotor. Air is forced from the chamber 7 through the slot 6 and axially along the rotor to the leading edge 9.
  • an ejector 10 is mounted adjacent to the forward edge 9 of the rotor for spinning with the rotor.
  • a binder supply duct (shown diagrammatically as 11) leads through the housing 1 and rotor 4 into the binder ejector 10 to a radially extending channel 12 that terminates in an outlet slot 13 having a peripheral edge 16 from which the binder is thrown as droplets by centrifugal force caused by the rotation of the ejector 10.
  • the configuration of the passage 12, slot 13 and the edge 16 are designed in known manner to give the desired particle drop size (typically average around 50 ⁇ m) with the chosen binder.
  • the ejector 10 has an outer cylindrical surface 14 of the same diameter as the cylindrical surface 18 of the rotor 4 and thus the air guide surface consists of surfaces 14 and 18 and the air flows along the surface 14 as a continuation of the surface 18 of the rotor 4.
  • the rotating ejector edge 16 therefore has a radius of 100% of the forward edge 9 of the rotor.
  • the edge 16 is adjacent to that forward edge because there is a substantially continuous air guide surface leading from the rotor to the forward edge.
  • the ejector 10 can have an outer surface 14 that is a continuation of the conical surface of the rotor or the surface 14 can be conical at a different angle, so as to deflect the air stream gently outwardly (or inwardly) without causing turbulence.
  • the rotor 4 is cooled during use by supply of cooling water to chamber 33 and from which it is led through orifices 34 to the channel 12 where it is mixed with more concentrated aqueous binder composition.
  • This concentrated aqueous binder is supplied through a passage in the shaft 35 to a chamber 36 from which it is centrifugally directed outwardly through orifices 37 into the channel 12. It travels as a film up the rearwardly facing surface 38 which is provided with a plurality of downwardly facing projections 39 and 40 that help spread the film as a uniform film over the surface 38,
  • the binder is mixed with the cooling water from the orifices 34 in the outlet passage 41.
  • the shaping of the leading edge of the ejector is such that the binder droplets are thrown fro ⁇ i point 16, rather than from the recessed edge 15, and so in Figure 4 the peripheral ejector edge is around 95 or 97% of the radius of the forward edge of the air guide surface.
  • the leading edge of the deflector is shaped so that the binder droplets are thrown from the outermost point 16, which thus serves as the centrifugal ejector edge, rather than from the point 17 where the channel 12 emerges from the ejector. In this instance therefore the ejector edge has a radius over 100% of the radius of the leading edge 9.
  • the leading edge 16 usually has a radius of not more than about 110% of the radius of the leading edge 9 although in some instances it can be greater.
  • the ejector edge 16 should preferably be at a radius of 95 to 100% of the radius of the inner surface of the air stream flowing axially over it from the air slot 6.
  • Figure 6 shows another type of arrangement that provides air flow and binder distribution similar to Figure 5 but in which the centrifugal ejector is self cleaning and is part of the rotor.
  • the rotor has an outer cylindrical or slightly conical surface 18 and a deflector surface 14 leading to an ejector edge 16 which is the outer edge of a front surface 45 up which binder flows.
  • the radius of the edge 16 is 100% of the radius of the forward edge of the rotor air guide surface defined by 18 and 14 but is about 105% of the radius of the part 18 of the rotor where the fibres are formed.
  • the binder is supplied along a duct 35 in the shaft to a chamber 42. From this chamber it is led by passages 43 and 44 back against the leading face 45 of the end 19 of the rotor. It emerges through a gap 46 between a cylindrical member 47 that surrounds the passage 44 and that defines a small gap with the face 45.
  • the concentrated aqueous binder flows centrifugally up the face 45 until it is mixed with cooling water that is led out from the cooling chamber 33 through a series of passages 34, and the diluted binder is thrown off the edge 16 as droplets.
  • Figure 3 shows a different type of apparatus in which there is a fixed housing 21, a spinning cup 22 and an ejector 23 mounted for rotation with the cup 22.
  • Melt is fed through a central passage 23 in the housing 21 on to a spinning plate 24 by which it is thrown outwardly against and over the cup walls 25. It flows down the outer surface 26 along which air is directed from a slot 27 as a wall jet. Additional air may be blown through slot 28.
  • Binder is fed through duct 29 to a channel 30 in the spinning ejector 23, leading to a centrifugal ejector edge 31 off which the binder is thrown into fibres being carried by the air stream from 27 along the surface 26.
  • the air stream from the slot 6 may have solely an axial component or may alternatively have a tangential component, generally being co-rotational with the rotor, but the axial component of the air velocity must be sufficient to carry the fibres axially forward of the leading edge 9 of the rotor.
  • the air stream is a true wall jet at least in the approximately central portion of the rotor where the bulk of the fiberising occurs.
  • the air stream may start to diffuse away from the rotor surface but a substantial proportion of it will remain very close to the rotor surface and so ca.i be considered to have an internal diameter the same as the leading edge of the rotor (or deflector if present) and tlvs binder is thrown directly into this air stream, with substantially no travel between the binder edge and th3 inner surface of the air stream.
  • an air stream surrounding the stream that defines the wall jet In order to promote maintenance of the wall jet effect throughout the length of the rotor it can be desirable to provide an air stream surrounding the stream that defines the wall jet.
  • a stream is provided from the channel 28 in Figure 3 and in Figure 1 it can be provided by a second air slot (not shown) that is spaced radially outwards from, and usually immediately adjacent to, the air slot 6.
  • the air supply for this second air slot is usually different from the supply of the slot 6.
  • supplementary binder can be sprayed from nozzles that are arranged in a ring around the rotor and that are directed in the direction of movement of the fibres.
  • the fibres that are carried off the rotor are collected on a conveyor (not shown) in conventional manner.
  • Examples 1 and 2 are operated using a spinner arrangement as shown in Figure 1 fitted with a binder ejector either as shown in Figure 4 (Example 1) or Figure 6 (Example 2) and in each example a comparison is operated with a smaller ejector having the radius of the ejector edge is about 50% of the radius of the edge 9.
  • These processes are conducted with a part of the binder being sprayed from a conventional nozzle ring arranged around the fibres as they are taken by the air stream off the rotor.
  • the binder is supplied as an aqueous concentrate of 10% of phenol formaldehyde resin and the amount of water being pumped into the binder ejector is sufficient to dilute it to 6%.
  • the drop size (Sauder mean diameter, SMD) when the ejector had 100% of the radius (as shown in Figure 4 or 6) is 35 ⁇ m average SMD with at least 95% less than 75 ⁇ m, whereas the droplet size when the edga 13 was at 50% of the radius is 75 ⁇ m SMD, when the rotor an «l the ejector spun at the normal working speed of 7000rpm.
  • the rotor 4 has a diameter of 330 ⁇ nm and rotates at 7000rpm.
  • the air pressure in the chamber 7 is such that air emerges from the slot 6 at an axial velocity of about 150m/s.
  • the air velocity is measured (in the absence of melt) at the closest practicable position to the surface of the rotor (about 5mm from the rotor) and at greater radial distances using hot-film anemometry equipment manufactured by Dantec using single right-angle probes of the fibre film type (model 55 R04) .
  • the velocity at a point mid-way between the edges 8 and 9 of the rotor is about 100m/s at 5mm from the surface, about 85m/s at 10mm from the surface, and about 15m/s at 20mm from the surface and about 15m/s at 50mm from the surface.
  • the corresponding measurements are about 90m/s at 5mm from the surface, 70mm at 10mm and 55 at 20mm from the surface, showing that there is still a wall jet but it is less noticeable.
  • test A is comparative and test B is according to the invention.
  • Comparison of tests A and B clearly demonstrates the extra binding strength that is obtained at any particular content of binder and the reduced aerosol content in test B, relative to test A.

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

Abstract

L'appareil décrit, qui sert à produire des feuilles agglomérées de laine minérale, comprend un rotor (4) d'où les fibres sont éjectées, une surface (14, 18) de guidage de l'air, un organe d'amenée d'air (6) pouvant diriger un jet d'air en forme de plan vertical le long de la surface de guidage de l'air, ainsi qu'un éjecteur centrifuge pour le liant qui comporte un bord (16) d'où le liant est projeté par centrifugation et dont le rayon est au moins de 90 % du rayon du bord d'attaque de la surface de guidage de l'air.
PCT/EP1991/000085 1990-01-18 1991-01-18 Appareil et procede de filage WO1991010626A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909001124A GB9001124D0 (en) 1990-01-18 1990-01-18 Spinning apparatus and method
GB9001124.8 1990-01-18

Publications (1)

Publication Number Publication Date
WO1991010626A1 true WO1991010626A1 (fr) 1991-07-25

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AU (1) AU7075791A (fr)
GB (1) GB9001124D0 (fr)
WO (1) WO1991010626A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995007243A1 (fr) * 1993-09-11 1995-03-16 Deutsche Rockwool Mineralwoll-Gmbh Dispositif permettant de produire des fibres minerales a partir d'une matiere en fusion
WO1997017305A1 (fr) * 1995-11-06 1997-05-15 Isover Saint-Gobain Procede et dispositif pour la centrifugation libre de fibres minerales
WO1997020781A1 (fr) * 1995-12-01 1997-06-12 Rockwool International A/S Fabrication de produits a base de fibres vitreuses synthetiques
WO2006070056A1 (fr) 2004-12-31 2006-07-06 Paroc Oy Ab Agencement et procede dans la fabrication de laine minerale et appareil de defibrage
WO2008084138A1 (fr) * 2007-01-09 2008-07-17 Paroc Oy Ab Dispositif et procédé pour la fabrication de fibres minérales
KR20160144086A (ko) * 2015-06-08 2016-12-16 조성훈 냉각수 분사 장치 및 이를 포함하는 암면 제조 장치
WO2018234652A1 (fr) 2017-06-23 2018-12-27 Saint-Gobain Isover Procédé de fabrication d'un produit d'isolation à base de fibres minérales
CN110093673A (zh) * 2019-05-29 2019-08-06 山东鲁阳节能材料股份有限公司 一种甩丝机及其风环
US10690342B2 (en) 2016-11-17 2020-06-23 Billion Sung Hoon Zorh Apparatus for spraying cooling water, apparatus and method for manufacturing mineral fiber

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US4105425A (en) * 1975-09-01 1978-08-08 Rockwool International A/S Apparatus for manufacture of mineral wool
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EP0235897A1 (fr) * 1986-01-22 1987-09-09 Sanei-Kisetsu Co., Ltd. Dispositif pour la fabrication de fibres inorganiques courtes
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DE1089522B (de) * 1956-08-08 1960-09-22 H J Henriksen & G Kaehler Verfahren und Vorrichtung zur Herstellung von Fasermaterial aus Steinen, Schlacke oder Glas
US4105425A (en) * 1975-09-01 1978-08-08 Rockwool International A/S Apparatus for manufacture of mineral wool
EP0059152B1 (fr) * 1981-02-24 1985-07-17 Isover Saint-Gobain Procédé et dispositif de formation de fibres minérales au moyen de roues de centrifugation
EP0235897A1 (fr) * 1986-01-22 1987-09-09 Sanei-Kisetsu Co., Ltd. Dispositif pour la fabrication de fibres inorganiques courtes
WO1988006146A1 (fr) * 1987-02-20 1988-08-25 Oy Partek Ab Centrifugeuse pour laine minerale
WO1988007980A1 (fr) * 1987-04-06 1988-10-20 Oy Partek Ab Dispositif de fibrillation pour la fabrication de laine de roche

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995007243A1 (fr) * 1993-09-11 1995-03-16 Deutsche Rockwool Mineralwoll-Gmbh Dispositif permettant de produire des fibres minerales a partir d'une matiere en fusion
WO1997017305A1 (fr) * 1995-11-06 1997-05-15 Isover Saint-Gobain Procede et dispositif pour la centrifugation libre de fibres minerales
WO1997020781A1 (fr) * 1995-12-01 1997-06-12 Rockwool International A/S Fabrication de produits a base de fibres vitreuses synthetiques
US5961897A (en) * 1995-12-01 1999-10-05 Rockwool International A/S Manufacture of man-made vitreous fiber products
EP2258667A3 (fr) * 2004-12-31 2013-05-15 Paroc Oy Ab Procédé de fabrication de laine minérale
WO2006070056A1 (fr) 2004-12-31 2006-07-06 Paroc Oy Ab Agencement et procede dans la fabrication de laine minerale et appareil de defibrage
WO2008084138A1 (fr) * 2007-01-09 2008-07-17 Paroc Oy Ab Dispositif et procédé pour la fabrication de fibres minérales
KR20160144086A (ko) * 2015-06-08 2016-12-16 조성훈 냉각수 분사 장치 및 이를 포함하는 암면 제조 장치
KR101690418B1 (ko) * 2015-06-08 2016-12-27 조성훈 냉각수 분사 장치 및 이를 포함하는 암면 제조 장치
US10690342B2 (en) 2016-11-17 2020-06-23 Billion Sung Hoon Zorh Apparatus for spraying cooling water, apparatus and method for manufacturing mineral fiber
WO2018234652A1 (fr) 2017-06-23 2018-12-27 Saint-Gobain Isover Procédé de fabrication d'un produit d'isolation à base de fibres minérales
US11608292B2 (en) 2017-06-23 2023-03-21 Saint-Gobain Isover Process for the manufacture of an insulating product based on mineral fibres
CN110093673A (zh) * 2019-05-29 2019-08-06 山东鲁阳节能材料股份有限公司 一种甩丝机及其风环
CN110093673B (zh) * 2019-05-29 2024-06-18 山东鲁阳节能材料股份有限公司 一种甩丝机及其风环

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