EP2882542B1 - Procede pour nettoyer et/ou decalaminer une brame ou un prefeuillard au moyen d'un laveur de calamine et laveur de calamine - Google Patents

Procede pour nettoyer et/ou decalaminer une brame ou un prefeuillard au moyen d'un laveur de calamine et laveur de calamine Download PDF

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Publication number
EP2882542B1
EP2882542B1 EP13747662.8A EP13747662A EP2882542B1 EP 2882542 B1 EP2882542 B1 EP 2882542B1 EP 13747662 A EP13747662 A EP 13747662A EP 2882542 B1 EP2882542 B1 EP 2882542B1
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EP
European Patent Office
Prior art keywords
nozzle
slab
strip
outlet
width
Prior art date
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Active
Application number
EP13747662.8A
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German (de)
English (en)
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EP2882542B2 (fr
EP2882542A1 (fr
Inventor
Jürgen Seidel
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SMS Group GmbH
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SMS Group GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/041—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0287—Cleaning devices removing solid particles, e.g. dust, rust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0278—Cleaning devices removing liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing

Definitions

  • the invention relates to a method for cleaning and / or descaling a slab or a slag by means of a scale scrubber, wherein the scale scrubber has at least one nozzle, is applied by the pressurized water to the surface of the slab or sliver. Furthermore, the invention relates to a scale washer.
  • Scale scrubbers are needed for clean removal of the primary or secondary scale, wherein in a generic scale scrubber water with a sufficiently high water pressure is applied to the slab to be cleaned.
  • the energy consumption of a scale washer is considerable.
  • the energy consumption can be up to 4.5 MW.
  • a maximum water pressure for example, of 380 bar is used. Reducing the energy consumption is directly associated with a decrease in the water pressure, so that then the descaling or cleaning result drops qualitatively.
  • Tinder scrubbers in various configurations are from the DE 693 14 275 T2 , from the WO 2009/056712 A2 , from the JP 59 076 615 A and from the JP 2010 247 228 A known.
  • the water is in this case discharged by a number of juxtaposed nozzles on the surface of the slab or of the rolling stock.
  • nozzles on the surface of the slab or of the rolling stock.
  • plants have about 50 nozzles arranged side by side per beam.
  • the US patent US 4,617,815 discloses a process for purifying and / or descaling a slab or slug by means of a scale scrubber, wherein the scrubber has at least one rectangular nozzle through which pressurized water is discharged onto the surface of the slab or slab.
  • the invention is therefore based on the object to propose a method of the type mentioned above and a scale washer, with a good Entzu matters- or cleaning result can be achieved, but at the same time significantly less energy is needed. Furthermore, the temperature losses of the slab or the pre-strip should be reduced.
  • the solution of this problem by the invention according to the method is characterized in that the outlet of the nozzle in the direction normal to the surface of the slab or the Vorbandes seen rectangular (rectangular) executed or slit-shaped with at least partially arcuate course, so that the water over the entire width of the slab or the pre-strip is applied as a continuous strip-shaped jet, wherein the width of the exit of the nozzle in the conveying direction of the slab or the pre-strip between 0.2 mm and 1.5 mm is selected, the water of the nozzle with a pressure between 5 bar and 50 bar is fed and wherein the
  • Distance between exit of the nozzle and surface of the slab or the pre-strip between 8 mm and 50 mm, preferably between 8 mm and 35 mm, is selected.
  • the width of the exit of the nozzle in the conveying direction of the slab or the pre-strip between 0.3 mm and 0.8 mm, more preferably between 0.4 mm and 0.6 mm, is selected.
  • the water is preferably fed to the nozzle at a pressure between 10 bar and 40 bar, in particular between 15 bar and 35 bar.
  • the distance between the outlet of the nozzle and the surface of the slab or the sliver is preferably between 10 mm and 30 mm, in particular between 15 mm and 20 mm.
  • the flow conditions at the outlet of the rectangular nozzle are designed or dimensioned so that there is a compact relatively smooth jet with high water outlet velocity.
  • the non-existent in the rectangular nozzle spreading of the water steel transversely to the conveying direction in comparison with a conventional flat jet nozzle causes high impact despite low pressure (Impact) and thus a good uniform Entzu concernings insectss.
  • the strip-shaped jet is preferably at an angle between 0 ° and 30 °, preferably between 15 ° and 25 °, to the direction normal to the surface of the slab or the sliver against the conveying direction of the slab or Vorbandes fixed adjusted aligned or adjustable executed in said angular range.
  • the orientation of the beam can be set in the specified angular range of 0 ° to 30 ° optimally depending on the running conditions of the water, the space conditions or the slab dimensions. Alternatively, an adjustment of the angle with an adjusting member in dependence on the above conditions is possible. An angle of 0 ° may also be advantageous on the slab or pre-strip underside in order, for example, to maximize the applied impulse.
  • a further development provides that boundary edges of nozzle plates, which define the outlet of the nozzle, are set at different distances to the surface of the slab or the sliver.
  • the proposed scale scrubber for cleaning and / or descaling a slab or a sliver is inventively characterized in that the outlet of the nozzle in the direction normal to the slab or Vorbandober Design seen rectangular designed or slit-shaped with at least partially arcuate course, the width the exit of the nozzle in the conveying direction of the slab or the pre-strip is between 0.2 mm and 1.5 mm and wherein there are moving means with which the distance between the outlet of the nozzle and the surface of the slab or the pre-strip is adjustable.
  • the nozzle is accommodated according to a preferred embodiment of the invention in a housing which is pivotable about an axis which is arranged horizontally and transversely to the conveying direction of the slab or the sliver.
  • a portion or projection may be arranged, the closer to the surface under normal use of the scale washer the slab or the sliver is arranged as the exit of the nozzle. This allows efficient protection of the nozzle.
  • the outlet of the nozzle can be formed by two adjacent - and preferably linearly shaped - nozzle plates.
  • a further embodiment of the invention provides that the outlet of the nozzle is formed by two ruler-shaped nozzle plates arranged adjacent to one another, wherein the two nozzle plates have boundary edges for the passage of water, seen in the direction normal to the surface of the slab or the sliver under a wedge angle , Preferably between 1 ° and 5 °, to the horizontal direction transverse to the conveying direction of the slab or the pre-strip and wherein the two nozzle plates are formed relative to each other in the horizontal direction transversely to the conveying direction of the slab or the pre-strip adjustable. This can be easily changed the size of the nozzle gap.
  • nozzle plate edges and the edges can be arbitrarily contoured, in particular with a contour according to an n-th order polynomial, be provided so that - similar to the CVC technology - over the width results in a parabolic gap change, for example.
  • the outlet of the nozzle is formed by two arbitrarily contoured nozzle plates, wherein the two nozzle plates can be adjusted relative to each other so that the gap width varies unevenly over the width of the slab or the sliver.
  • the nozzle gap width can be made adjustable in sections over the width of the slab to be descaled or the sliver; Accordingly, it is provided so far that the width of the outlet of the nozzle in the conveying direction over the width of the slab or the pre-strip is partially adjustable.
  • the scale scrubber has at least one filter element which has a multiplicity of bores, meshes or slots, wherein the bore diameter, the mesh width or the slot width is smaller or equal to the width of the outlet of the nozzle.
  • a filter is arranged in the water supply line whose mesh size is smaller than the slit width of the nozzle.
  • the filter element can be arranged in front of the outlet region of the nozzle, wherein the sum of the cross-sectional area of the holes, meshes or slots in the filter element is greater than the cross section of the outlet of the nozzle.
  • the feed lines to the scale scrubber and / or the housing of the scale washer and / or all water-carrying components are preferably made of stainless material (preferably steel or copper).
  • Blockage of the narrow rectangular nozzle is thus avoided by a suitably designed filter unit within the scale scrubber housing.
  • This is, for example, a cuboid (or with a similar spatial extent) continuous filter unit over the width, which is arranged in front of the outlet channel.
  • the filter area protrude into the distribution channel.
  • the filter unit is provided with small meshes or holes or preferably with narrow slots whose bore, mesh or slot width is less than or equal to the same width as the outlet width of the rectangular nozzle.
  • the sum of the cross-sectional area of the bores, meshes or slots is made larger than the cross section of the rectangular nozzle in order to minimize the flow losses.
  • outlet of the nozzle is formed by two correspondingly contoured plates which change the gap over the width of the slab or the sliver at relative displacement to each other.
  • the rectangular nozzle unit can be composed of the components water supply area, if necessary a filter plate, a jet straightener, a nozzle compensation section, a beam bundling in front of the nozzle gap and the nozzle gap.
  • the boundary edges of the two nozzle plates can also be arranged at a different distance from the slab or to the sliver or adjusted to such a different distance.
  • the rectangular gap can also be formed arcuate.
  • the nozzle gap width can also be adjustable in sections over the width of the nozzle.
  • the nozzle may have a conical outlet gap or a parallel outlet gap in the outflow direction of the water, wherein the length of the outlet gap in the outflow direction of the water is preferably less than 20 mm and / or longer than three times the width of the outlet of the nozzle.
  • the invention proposes a combination of different measures to achieve a good Entzu minimumshunt at significantly reduced energy consumption.
  • the distance between the outlet of the rectangular nozzle and the surface of the slabs or of the rolling stock is preferably 20 mm, the range between 10 mm and 30 mm also giving very good results. It is particularly advantageous that small distances to the slab or to the sliver can be set with a rectangular nozzle, without that the nozzle coverage is relevant across the width, since it is a rectangular nozzle.
  • the pressure level is preferably maintained at 25 bar, with values between 10 bar and 40 bar also giving good results. This results in a significant energy savings.
  • the slit width of the rectangular nozzle is preferably set to 0.5 mm; the preferred value range is between 0.3 and 0.8 mm.
  • a low amount of descaling water is adjustable, which reduces the cooling effect of the slab or slag.
  • the nozzle plates can be designed to be interchangeable. They are preferably made of heat-resistant stainless steel, hardened steel, carbide or ceramic.
  • the angle of the jet of the nozzle is preferably adjusted so steeply that all water runs against the strip running direction; Here, an angle between 0 ° and 25 ° is preferred.
  • the scale washer is preferably arranged in front of the finishing train or behind the slab furnace.
  • the adjustability of the distance between the nozzle outlet and the slab surface not only optimizes the descaling process, but also protects the nozzle when the slab thickness changes.
  • the nozzle can be raised slightly or it differs at an external force on its pivotal housing, whereby damage can be avoided.
  • the scale washer bar with the rectangular nozzle is preferably mounted in a rocker.
  • a Vorband- or slab Kopfformerkennung can be provided before the scale scrubber (optical or mechanical system) and thus the nozzle position at the top of the slab or the belt can be controlled.
  • the slot width of the rectangular nozzle can be changed by replacing the nozzle plates. It is also possible to vary the slot width by an adjusting mechanism (for example by an eccentric or a wedge); For this purpose, a nozzle plate can be arranged displaceably. This makes it possible to compensate nozzle plate wear. Furthermore, this makes it possible to open the gap, for example, for a possible nozzle cleaning.
  • the gap of the nozzle is only partially changed over the width of the rectangular nozzle (transversely to the conveying direction of the slab).
  • the nozzle gap can be closed in sections, whereby a width adjustment to different slab widths is possible.
  • the descaling pressure is substantially reduced compared with the prior art, whereby a substantially uniform descaling result is nevertheless achieved by the proposed feature combination.
  • the invention thus operates by decreasing the distance and the water pressure while maintaining the same descaling quality.
  • the distance between the nozzle outlet and slab surface can be adjusted by a corresponding actuator.
  • the use of the proposed rectangular nozzle is of advantage here, since a uniform Entzu matterssrial or cooling effect over the width of the slab is effected regardless of the distance. This also applies to a curved Walzgutober Design.
  • the amount of water required per time can be significantly reduced. This reduces the cooling effect of the slab or the sliver.
  • the lower cooling effect can thus be used to save energy, for example by reducing the furnace temperature (heating effect).
  • the invention provides a rectangular nozzle with which a water curtain can be generated and directed onto the slab to be descaled.
  • the proposed embodiment is characterized by a cost-effective design. This applies on the one hand by the possibility of using low-pressure pumps; Furthermore, cheaper pipes and spray bars can be used with thinner wall thicknesses. The shield against high pressure used is less expensive. Furthermore, the wear of the rectangular nozzle is reduced due to the low pressure. As a result, only a lower maintenance is required.
  • the supply lines to the scale scrubber and / or the scale scrubber housing or at least all components in water-carrying areas made of stainless material can be performed, since this is not a high-pressure scrubber with the necessary pressure resistance, but only to pressures less than 50 bar acts. A possible risk of blockage of the narrow slot nozzle can also be counteracted so effectively. In this case, rust within the supply lines or the scale washer does not occur.
  • the scale washer also advantageously occupies a smaller space, since only one row of nozzles per side must be provided for the scale scrubber.
  • the wetted with water surface of the scale washer on the top can be additionally limited by driving or squeezing rollers before and / or behind the tinder scrubber.
  • the squeezing rollers are adjusted to a defined force or to a defined gap.
  • proven gutters for "skimming" of the water can also be arranged in this scale washer design.
  • the rectangular nozzle used also results in an optimum covering of the slab over the width, even at different distances between the nozzle outlet and the slab surface.
  • the impact pressure is maintained by the use of the proposed rectangular nozzle with the specification of the operating parameters also at least the same size as in prior art high-pressure nozzles.
  • the outlet channel of the nozzle can be designed in the form of a pointed slot nozzle in the outlet region.
  • a nozzle with a slightly conical or preferably parallel exit slit with a gap length of less than 20 mm and / or longer than three times the exit slit width of the nozzle can be used.
  • FIG. 1 is a tinder scrubber 2 outlined, with a slab 1 is descaled at its top and at its bottom. Accordingly, a respective nozzle 3 is arranged above and below the slab 1. The slab 1 moves in the conveying direction F past the scale scrubber 2.
  • each nozzle 3 has an outlet 4, is discharged from the water under pressure.
  • the nozzle 3 is such that over the width B of the slab 1 (see FIG. 5 ) emits a jet 5 in the form of a curtain of water, that is, it is at the nozzle gap at the outlet 4 to a rectangular gap (rectangular nozzle cross-section), which extends over the entire width B of the slab 1 horizontally and transversely to the conveying direction F.
  • the nozzle 3 is arranged in a housing 7.
  • the housing 7 is pivotally mounted on an axis A, which is aligned horizontally and transversely to the conveying direction F.
  • a movement means 6 allows the movement of the housing 7 and thus the up and down movement of the nozzle 3 and thus of the nozzle exit 4.
  • the nozzle exit 4 can thus be moved in the direction N normal to the slab surface.
  • the distance a can be set, which is present between the outlet 4 of the nozzle 3 and the surface of the slab 1.
  • a section or projection 8 is arranged on the housing 7. This section projects beyond the nozzle outlet 4 and thus provides protection for the nozzle 3. Accordingly, a distance a 'between the lower edge of the portion or the projection 8 and the surface of the slab 1 is given, which is smaller than the distance a between the exit 4 of the nozzle 3 and the slab surface.
  • the jet 5 emerging from the nozzle 3 is oriented normal to the direction N on the slab 1 at an angle ⁇ (see FIG FIG. 1 , below).
  • the orientation is oriented counter to the conveying direction F.
  • the water is supplied to the nozzle 3 at a pressure p via a feed line 12. Behind a filter plate 13, the water enters a jet straightener 14, which consists of grid plates. From here, the water enters a nozzle rectifier section 15.
  • the rectangular nozzle unit is thus composed of the main components water inlet region 12, optionally a filter plate 13, a jet straightener 14, a nozzle compensation section, a beam focusing in front of the nozzle gap and finally the nozzle gap.
  • FIG. 1 A possible embodiment for the filter unit 13 within the scale scrubber housing 7 or scale scrubber 2 is in Fig. 1 shown.
  • it is a cuboid continuous filter unit 13, which extends across the width and the shell-shaped and arranged in front of the rectangular nozzle outlet region 14, 15.
  • the filter projects into the distribution channel 21.
  • the filter housing or the filter unit 13 is provided with a plurality of narrow slots (in Fig. 1
  • the sum of the cross-sectional area of the bores, meshes or preferably slots is larger than the outlet cross-section 4 of the rectangular nozzle 3.
  • the water thus flows from the supply line 12 in a kind of distribution channel 21 and further through a plurality of slots of the filter unit 13 in the actual nozzle inlet with the jet straightener 14 and the nozzle rectifier section 15 and finally to the nozzle exit 4th
  • the filter unit 13 and the jet straightener 14 can also be easily exchanged for possible maintenance purposes (for example, by a movement in the direction of the exit of the nozzle 4).
  • the feed line 12 to the tinder scrubber 2 and / or the tinder scrubber housing 7 or at least all components (eg jet straightener 14 and nozzle compensation section 15) leading into the water can be made of stainless material. A risk of blockage of the narrow slot nozzle in the nozzle gap 4 can also be counteracted so effectively. Rust inside the feed line 12 or the scale washer 2 then does not apply.
  • the nozzle gap itself is formed by two nozzle plates 9 and 10, the respective boundary edges 11 have (see FIG. 4 ).
  • the boundary edges 11 of the two sides can at different levels (distance a to Slab 1) be arranged adjustable or not adjustable.
  • the nozzle plates may be designed to be exchangeable.
  • the outlet channel 4 of the nozzle 3 can be designed in the form of a pointed slot nozzle in the outlet region (ie, without, for example, a parallel outlet gap), as described, for example, in US Pat.
  • a pointed slot nozzle in the outlet region ie, without, for example, a parallel outlet gap
  • Fig. 4 is formed by means of the two parallel boundary edges 11, can be used.
  • the rectangular nozzle outlet 4 has an exit surface, which is a product of the width b of the outlet 4 of the nozzle 3 in the conveying direction F (see FIG. 3 ) and the width of the nozzle gap horizontally and transversely to the conveying direction F results.
  • FIG. 1 Shown in FIG. 1 also transport rollers (roller table rollers) 16. Also on the top - above the transport roller - Abquet rollers can be arranged so that the pair of rollers can act as a driver. Indicated in FIG. 1 also a deflector rib 17.
  • FIG. 2 a nozzle 3 is shown in more detail.
  • a screw of the nozzle is provided on or in the housing 7 by means of screws 18.
  • the water leaves the nozzle in the direction of the arrow.
  • the screws are on the side facing away from the slab - so protected from the radiant heat - arranged.
  • a seal 19 establishes a tight bond between the nozzle body and the nozzle plates 9 and 10.
  • outlet 4 of the nozzle 3 is adjustable with respect to the width b.
  • one nozzle plate 10 is displaceably arranged in the direction of the double arrow (the displacement means are not shown, these may be mechanical, hydraulic, pneumatic or electrical actuators).
  • FIG. 4 is an alternative to FIG. 3 a nozzle plate 10 in the direction N normal to the slab surface slidably. This also allows the gap size of the rectangular gap of the nozzle 3 to be changed.
  • a displacement of a nozzle plate 10 relative to the other nozzle plate 9 in the direction transverse to the conveying direction F that is, in the direction of the slab width, for example, in conical section of the boundary edge eleventh the nozzle plate to effect a gap width change, up to the complete closure of the nozzle.
  • outlet 4 of the nozzle 3 does not necessarily have to be linear (straight), but may also be curved.
  • the outlet 4 of the nozzle 3 projects laterally slightly beyond the width B of the slab 1.
  • the arrows in FIG. 5 indicate the direction of water flow.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Claims (19)

  1. Procédé pour le nettoyage et/ou le décalaminage d'une brame ou d'une amorce de démarrage (1) au moyen d'un laveur de calamine (2), dans lequel le laveur de calamine (2) présente au moins une buse (3) comportant une sortie réalisée sous forme rectangulaire lorsqu'on regarde dans une direction perpendiculaire (N) à la surface de la brame ou de l'amorce de démarrage (1), par laquelle de l'eau mise sous pression (p) est appliquée sur la surface de la brame ou de l'amorce de démarrage (1), caractérisé en ce que la sortie (4) de la buse (3), lorsqu'on regarde dans une direction perpendiculaire (N) à la surface de la brame ou de l'amorce de démarrage (1) peut également, en variante à la forme de réalisation de configuration rectangulaire, être réalisée avec une allure en forme d'arc au moins par tronçons, de manière telle que l'eau, dans les deux alternatives, est appliquée sur toute la largeur (B) de la brame ou de l'amorce de démarrage (1) sous la forme d'un jet continu (5) en forme de bande, dans lequel la largeur (b) de la sortie (4) de la buse (3), dans la direction de transport (F) de la brame ou de l'amorce de démarrage (1), est sélectionnée entre 0,2 mm et 1,5 mm, dans lequel l'eau est acheminée à la buse (3) avec une pression (p) entre 5 bar et 50 bar et dans lequel la distance (a) entre la sortie (4) de la buse (3) et la surface de la brame ou de l'amorce de démarrage (1) est sélectionnée entre 8 mm et 50 mm.
  2. Procédé selon la revendication 1, caractérisé en ce que la largeur de la sortie (4) de la buse (3) dans la direction de transport (F) de la brame ou de l'amorce de démarrage (1) est sélectionnée entre 0,3 mm et 0,8 mm, de préférence entre 0,4 mm et 0,6 mm.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'eau est acheminée à la buse (3) avec une pression (p) entre 10 bar et 40 bar, de préférence entre 15 bar et 35 bar.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la distance (a) entre la sortie (4) de la buse (3) et la surface de la brame ou de l'amorce de démarrage (1) est sélectionnée entre 10 mm et 30 mm, de préférence entre 15 mm et 20 mm.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le jet (5) en forme de bande est orienté en formant un angle (α) réglé à demeure entre 0° et 30°, de préférence entre 15° et 25° par rapport à la direction perpendiculaire (N) à la surface de la brame ou de l'amorce de démarrage (1) à l'encontre de la direction de transport (F) de la brame ou de l'amorce de démarrage (1) ou est réalisé de manière à pouvoir être réglé dans la plage angulaire mentionnée.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'on règle des plaques de buse (9, 10) définissant des arêtes de délimitation (11) de la sortie (4) de la buse (3) à différentes distances par rapport à la surface de la brame ou de l'amorce de démarrage (1).
  7. Laveur de calamine (2) pour le nettoyage et/ou le décalaminage d'une brame ou d'une amorce de démarrage (1), qui présente au moins une buse (3) comprenant une sortie réalisée sous forme rectangulaire lorsqu'on regarde dans une direction perpendiculaire (N) à la surface de la brame ou de l'amorce de démarrage (1), par laquelle on peut appliquer de l'eau mise sous pression (p) sur la surface de la brame ou de l'amorce de démarrage (1), en particulier pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la sortie (4) de la buse (3), lorsqu'on regarde dans une direction perpendiculaire (N) à la surface de la brame ou de l'amorce de démarrage peut également, en variante à la forme de réalisation de configuration rectangulaire, être réalisée avec une allure en forme d'arc au moins par tronçons, dans lequel, dans les deux alternatives, la largeur (b) de la sortie (4) de la buse (3) dans la direction de transport (F) de la brame ou de l'amorce de démarrage (1) se situe entre 0,2 mm et 1,5 mm, et dans lequel on prévoit des moyens de déplacement (6) avec lesquels on peut régler la distance (a) entre la sortie (4) de la buse (3) et la surface de la brame ou de l'amorce de démarrage (1).
  8. Laveur de calamine selon la revendication 7, caractérisé en ce que la buse (3) est incorporée dans un logement (7) qui est apte à pivoter autour d'un axe (A) qui est disposé en direction horizontale et en direction transversale par rapport à la direction de transport (F) de la brame ou de l'amorce de démarrage (1).
  9. Laveur de calamine selon la revendication 8, caractérisé en ce que, contre le logement (7), est disposé au moins un tronçon (8) ou une saillie qui est disposé, dans le cas d'une utilisation du laveur de calamine en service normal, plus près (a') de la surface de la brame ou de l'amorce de démarrage (1) que la sortie (4) de la buse (3).
  10. Laveur de calamine selon l'une quelconque des revendications 7 à 9, caractérisé en ce que la sortie (4) de la buse (3) est formée par deux plaques de buse (9, 10) disposées en position réciproquement adjacente, dans lequel au moins une des plaques de buse (9, 10) est disposée de manière à pouvoir être réglée dans la direction de transport (F) de la brame ou de l'amorce de démarrage (1) et/ou dans une direction perpendiculaire (N) à la surface de la brame ou de l'amorce de démarrage (1) et/ou en direction transversale par rapport à la direction de transport (F) de la brame ou de l'amorce de démarrage (1).
  11. Laveur de calamine selon l'une quelconque des revendications 7 à 9, caractérisé en ce que la sortie (4) de la buse (3) est formée par deux plaques de buse (9, 10) en forme de règle, disposées en position réciproquement adjacente, dans lequel les deux plaques de buse (9, 10) présentent des arêtes de délimitation (11) pour le passage de l'eau, qui s'étendent, lorsqu'on regarde dans une direction perpendiculaire (N) à la surface de la brame ou de l'amorce de démarrage (1) en formant un angle cunéiforme, de préférence entre 1° et 5° par rapport à la direction horizontale transversalement par rapport à la direction de transport (F) de la brame ou de l'amorce de démarrage (1), et dans lequel les deux plaques de buse (9, 10) sont réalisées pour pouvoir être réglées l'une par rapport à l'autre en direction horizontale transversalement par rapport à la direction de transport (F) de la brame ou de l'amorce de démarrage (1).
  12. Laveur de calamine selon l'une quelconque des revendications 7 à 9, caractérisé en ce que la sortie (4) de la buse (3) est formée par deux plaques de buse (9, 10) présentant le contour que l'on souhaite, les deux plaques de buse (9, 10) pouvant être déplacées l'une par rapport à l'autre de manière telle que l'on modifie de manière irrégulière l'espace libre qui s'étend sur la largeur de la brame ou de l'amorce de démarrage (1).
  13. Laveur de calamine selon l'une quelconque des revendications 7 à 12, caractérisé en ce que les plaques de buse (9, 10) sont constituées d'acier spécial résistant à la chaleur, d'acier trempé, de métal dur ou de céramique.
  14. Laveur de calamine selon l'une quelconque des revendications 7 à 13, caractérisé en ce qu'il présente une unité faisant office de buse comprenant les composants suivants, à savoir une zone d'amenée d'eau, de préférence une plaque filtrante, un dresseur de jet, un tronçon d'autorégulation de buse, une collimation de jet en amont de la fente de buse et une fente de buse.
  15. Laveur de calamine selon l'une quelconque des revendications 7 à 14, caractérisé en ce que la largeur (b) de la sortie (4) de la buse (3) peut être réglée par tronçons dans la direction de transport (F) sur toute la largeur de la brame ou de l'amorce de démarrage (1).
  16. Laveur de calamine selon l'une quelconque des revendications 7 à 15, caractérisé en ce qu'il présente au moins un élément filtrant (13) qui présente une multitude d'alésages, de mailles ou de fentes, dans lequel le diamètre des alésages, la largeur des mailles ou la largeur des fentes est supérieure ou égale à la largeur (b) de la sortie (4) de la buse (3).
  17. Laveur de calamine selon la revendication 16, caractérisé en ce que l'élément filtrant (13) est disposé en amont de la zone de sortie de la buse (3), dans lequel la somme des surfaces de section transversale des alésages, des mailles ou des fentes dans l'élément filtrant (13) est supérieure à la section transversale de la sortie (4) de la buse (3).
  18. Laveur de calamine selon l'une , quelconque des revendications 7 à 17, caractérisé en ce que les conduits d'alimentation (12) au laveur de calamine (2) et/ou le logement (7) du laveur de calamine (2) et/ou tous les composants guidant l'eau sont constitués d'une matière inoxydable.
  19. Laveur de calamine selon l'une quelconque des revendications 7 à 18, caractérisé en ce que la buse (3), dans la direction d'évacuation de l'eau, présente une fente de sortie de forme conique ou une fente de sortie parallèle, dans lequel la longueur de la fente de sortie mesurée dans la direction d'évacuation de l'eau est de préférence inférieure à 20 mm et/ou est supérieure à trois fois la largeur (b) de la sortie (4) de la buse (3).
EP13747662.8A 2012-08-10 2013-08-07 Procede pour nettoyer et/ou decalaminer une brame ou un prefeuillard au moyen d'un laveur de calamine et laveur de calamine Active EP2882542B2 (fr)

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DE102012214298.3A DE102012214298A1 (de) 2012-08-10 2012-08-10 Verfahren zur Reinigung und/oder Entzunderung einer Bramme oder eines Vorbandes mittels eines Zunderwäschers und Zunderwäscher
PCT/EP2013/066517 WO2014023753A1 (fr) 2012-08-10 2013-08-07 Procédé pour nettoyer et/ou décalaminer une brame ou un préfeuillard au moyen d'un laveur de calamine et laveur de calamine

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CN104703721A (zh) 2015-06-10
JP5882543B2 (ja) 2016-03-09
EP2882542B2 (fr) 2021-03-10
KR20150031342A (ko) 2015-03-23
JP2015530250A (ja) 2015-10-15
CN104703721B (zh) 2016-08-17
US20150217336A1 (en) 2015-08-06
BR112015002825A2 (pt) 2017-08-08
DE102012214298A1 (de) 2014-02-13
KR101650819B1 (ko) 2016-08-24
MY176374A (en) 2020-08-04
RU2015107797A (ru) 2016-09-27
EP2882542A1 (fr) 2015-06-17
WO2014023753A1 (fr) 2014-02-13
RU2608939C2 (ru) 2017-01-26
UA111674C2 (uk) 2016-05-25

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