EP0265422B1 - Procede et dispositif d'elimination mecanique de la surface d'objets en morceaux - Google Patents

Procede et dispositif d'elimination mecanique de la surface d'objets en morceaux Download PDF

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Publication number
EP0265422B1
EP0265422B1 EP86900648A EP86900648A EP0265422B1 EP 0265422 B1 EP0265422 B1 EP 0265422B1 EP 86900648 A EP86900648 A EP 86900648A EP 86900648 A EP86900648 A EP 86900648A EP 0265422 B1 EP0265422 B1 EP 0265422B1
Authority
EP
European Patent Office
Prior art keywords
goods
processing surface
treatment
process according
lumped
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
EP86900648A
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German (de)
English (en)
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EP0265422A1 (fr
Inventor
Friedrich Wilhelm Plank
Helmut Machnig
Georg-Helmar Mischke
Reinhard Friedrichs
Norbert Nahrmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinisch-Westfalische Kalkwerke AG
Original Assignee
Rheinisch-Westfalische Kalkwerke AG
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Publication date
Application filed by Rheinisch-Westfalische Kalkwerke AG filed Critical Rheinisch-Westfalische Kalkwerke AG
Priority to AT86900648T priority Critical patent/ATE44348T1/de
Publication of EP0265422A1 publication Critical patent/EP0265422A1/fr
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Publication of EP0265422B1 publication Critical patent/EP0265422B1/fr
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/06—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving oscillating or vibrating containers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/30—Rubber elements in mills

Definitions

  • the invention relates to a method and a device for the mechanical surface treatment of piece goods, such as are known for example from FR-A-2.186.340.
  • the burrs of bodies made of thermoplastic materials or rubber, which arise during production, are to be torn off or broken off.
  • the parts are first frozen with a liquid cooling gas and then flung back and forth in the brittle state between a floor and a treatment surface arranged at a distance. Only burrs can be broken off and, for example, no depressions on the surface can be treated.
  • the surface of lumpy goods has to be treated mechanically in the most diverse areas of technology. In some cases, it is a matter of completely or partially removing a shell or skin.
  • This skin or shell can be of the same material quality as the " core" of the respective piece, but it can also be the other way around, to remove the surface made of a different material.
  • the peeling of fruit or the cleaning of potatoes may be mentioned in this context as an example.
  • removal of surfaces of lumpy goods also includes the removal of surfaces which as such do not form an independent component, but for example have a different chemical or mineral composition compared to the rest of the material (the core).
  • the surface of lump lime made with sulfur-containing fuels is mentioned as an example of this field of application.
  • the invention has for its object to show a way to mechanically treat lumpy goods in such a way that a largely uniform material removal is achieved over the entire surface. So, regardless of the shape of the piece and in particular its geometrical surface design, a layer of the same thickness as possible should be removed over the surface, or in other words: a way should be shown, with as little material loss as possible, to see a uniform material removal over the entire surface of the piece , to reach.
  • the invention is also intended to offer the possibility of being used in the large-scale area.
  • the focus here is on the surface treatment of lumpy lime.
  • the invention is based on the knowledge that, regardless of the design of the surface, a uniform removal can be achieved in that the piece goods to be treated in each case with a certain kinetic energy along an adjustable transport route and / or over a certain time interval between a floor and one of these at a distance assigned to the treatment surface, which is provided with profiles at least over partial sections, is flung back and forth.
  • the invention accordingly proposes a method for the mechanical surface treatment of piece goods, in which the material, when subjected to a mechanical impulse, is flung back and forth between a floor and a treatment surface arranged at a distance therefrom, the material being moved along the transport path and / or during a specific time interval between the floor and the treatment surface provided with profiling, at least over partial sections, until a desired surface removal is achieved.
  • a device is proposed with at least one transport floor for the goods and a treatment area assigned to them at a distance, and a device for exerting a mechanical impulse on the goods to be treated, in which the treatment area is provided with profiles at least over partial sections.
  • the pulse device can be provided in different ways.
  • a pulsating movable plunger is guided against the floor in a certain cycle sequence, which thus exerts an impulse on the material carried over it.
  • An advantageous embodiment of the invention provides for a forced agitator to be arranged on the floor and / or the treatment surface.
  • the device can also be arranged in such a way that it acts on it via corresponding intermediate organs.
  • a further embodiment according to the invention provides for the floor and the treatment surface to be connected to one another via rigid connecting elements, so that a type of treatment room is created and the forced agitator is fastened to one of the connecting elements.
  • the forced agitator can be a vibrator, preferably an electric vibrator.
  • the invention provides that the forced agitator is formed by an unbalance device which is seated on a rotatably driven shaft.
  • a circular or involute movement path for the floor, the treatment area and the material to be treated can be achieved in this way.
  • an impulse is exerted on the piece goods lying on the floor, which is then accelerated in the direction of the treatment area and hits it before it falls back onto the floor, usually at a different angle.
  • the material is guided against a treatment surface provided with profilings at least over partial sections.
  • the surface design of the treatment area plays an important role in terms of the quality and quantity of the surface removal.
  • the profiles can have, for example, a cone, pin, ball, hemisphere, quarter ball, wave, sawtooth or pyramid shape.
  • the corresponding surface can, however, also be designed like a brush, for example.
  • the invention further provides for forming individual sections of the treatment area with different profiles. Such an arrangement should be chosen depending on the goods to be treated.
  • the " surface tools”, in particular the projecting sections, mean that - as soon as the material is thrown against them - not only the surfaces are rubbed off or brushed off, but in particular also recessed surface parts can be removed if, for example, a pyramid-like projection in the area of one Indentation on the surface.
  • optimization in the sense of a uniform surface removal is achieved in particular if the piece to be treated is guided along the transport path and / or during a certain time interval from the floor against the treatment area in as different directions as possible and where appropriate strikes different sections of the treatment area.
  • this aim can be achieved in that the material is guided over a deformable floor and / or against a deformable treatment surface, the deformability preferably being achieved by an elastic material of the floor and / or the treatment surface.
  • the general cargo is then not only flung back and forth between the floor and the treatment surface due to its possibly irregular surface and / or inclination of the treatment line consisting of the floor and the treatment surface, but this effect is further enhanced by the elastic surfaces, the respective geometric alignment is further influenced by the forced agitator. Similar to a trampoline, the parts are then caught and flung away, reinforced by the additional, from the forced agitator brought impulse. Counter vibrations are set up with variable frequency distribution.
  • the process control is preferably selected such that the acceleration of good when the treatment area is reached is a multiple of the acceleration due to gravity, preferably three to six times.
  • a distance of less than twice the largest piece goods diameter having proven to be particularly advantageous.
  • a distance that is 20 to 40% larger than the largest diameter is preferred.
  • the effect of the corresponding treatment areas is particularly high.
  • an adjustable pulse frequency and amplitude a large number of touch contacts can be achieved over relatively short treatment distances and / or time intervals, as a result of which a corresponding surface layer is not only removed more quickly, but also - as described in detail above - more uniformly.
  • the invention thus proposes a completely new type of mechanical surface removal, and in particular a completely new kinetics of the material to be treated.
  • surface areas can also be removed that were previously not accessible with known methods, in particular recessed surface parts.
  • the forced agitators described require relatively little electrical energy when generating strong mechanical pulses and high efficiency.
  • changes in the sense of a different good load are easily possible , whereby one and the same device can be adapted to different piece goods to be treated.
  • a further optimization of the method according to the invention or of the device according to the invention can be optimized in particular taking into account the given rule of determining the distance between floor and treatment surface in a certain way by dividing the material flow into different grain fractions and feeding them to a separate device,
  • the corresponding system is designed in such a way that a separation according to different grain sizes is carried out by sieving over a common feed area, and the material flow with the finer material that falls through downwards is fed to a device that but is arranged essentially parallel to the first device for the coarser fractions.
  • the system is particularly compact.
  • a forced agitator can act on both devices or their parts together, for example, by the treatment lines being connected to one another via a fixed mechanical linkage and seated on a common spring bearing.
  • the individual device or the complete system is preferably encapsulated in a dust-tight and sound-absorbing manner and, as a further advantageous embodiment of the invention provides, is kept dust-free by connecting a suction device.
  • the device according to the invention if appropriate in combination with other devices, is particularly suitable for the mechanical desulfurization of lump lime (steelwork lime), since, among other things, the advantages according to the invention are particularly clear due to the irregular surface properties of lime lime.
  • the mode of operation of the method according to the invention can also be improved for such an application in that a moisture mist (water mist) is sprayed onto the material in the application area for the material, a superficial hydration occurring which makes the material somewhat softer and therefore less abrasion-free.
  • a moisture mist water mist
  • this advantage applies to the processing of all hydratable substances.
  • the invention therefore proposes, in an advantageous embodiment, to subdivide the material flow to be treated into partial flows of different grain fractions, as has already been explained above, but also to send different treatment lines, for example in terms of inclination, according to the desired surface removal, so that - independently of the grain size - an approximately equally thick layer is always removed.
  • the mechanically desulphurized material also differs in its outer habit from the material sent through a drum screen.
  • the invention also comprises a lumpy good, in particular lump lime, which is produced using the method according to the invention and / or in the device according to the invention.
  • a product has a particularly uniform surface.
  • the mechanical desulfurization according to the invention is not only particularly effective, but the method and the device are also particularly easy to handle and enable the goods to be processed quickly and effectively.
  • This shows a system for mechanical surface treatment of lump lime for use in the steelworks area, where only lime qualities with a particularly low sulfur content can be used.
  • the system therefore serves for the mechanical desulfurization of the lime in the surface area.
  • the system according to FIGS. 1 to 5 consists of two treatment lines 10, 12 arranged at a distance from one another. Each of the treatment lines has a bottom 14 or 16. So-called treatment areas 18, 20 are arranged above each floor and parallel to it.
  • the floors 14, 16 and the treatment surfaces 18, 20 have the shape of elongated rectangles when viewed from above and are rigidly connected to one another and to one another at their opposite longitudinal edges by side walls 22, 24.
  • Each floor 14, 16 consists of a circumferential metal frame 26, the longitudinal sides of which are connected to one another at a distance from one another via cross struts 26a.
  • a rubber blanket 28 is stretched or fastened on the metal frame 26 or the cross struts 26a, for example via a tensioning device (not shown) in the frame area or suitable screw connections.
  • the rubber blanket has, over its surface in the longitudinal direction and perpendicular to it, spaced closed strips 28a which enclose rectangular areas 28b.
  • the areas 28b are provided with a plurality of through openings 28c.
  • the rubber blanket can consist of a hard rubber material, for example.
  • the treatment surfaces 18, 20 each consist of a metal sheet, preferably a steel sheet.
  • the steel sheet has a plurality of openings 30 arranged side by side and one behind the other, which are designed as sections which are expressed in the direction of the associated floor 14 or 16 and are only open in the direction of transport of the material to be treated (arrow direction A).
  • the openings 30 are therefore not produced by simply punching them out, but by pressing them out, similar to a grater.
  • the passage openings 30 are preferably small and closely spaced from one another.
  • FIGS. 3 and 4 show a front view and a side view of the treatment surfaces 18, 20, wherein in particular in FIG. 4 a longitudinal section shows a sawtooth shape of the individual sections 32 which are open and are open in the direction of transport (arrow A).
  • the treatment areas 18, 20 are designed over their entire area in the manner described. However, in the sense of the invention it is also possible to design only partial areas in this way, while other areas are either unprofiled or else have projections and recesses of other configurations, for example a cuboid shape, pyramid shape, hemisphere or quarter-sphere shape.
  • the surface of the treatment surface 18, 20 facing the respective floor 14 or 16 can also be designed with pins projecting downwards, similar to a brush. It is also particularly advantageous if the projections and recesses have a different overall height (depth), that is to say project more or less downwards in the direction of the associated floor 14, 16.
  • Shoulders 34a, b projecting vertically at the ends are welded to the side walls 22, 24 and are parallel and at a distance from an associated foundation 36a, b.
  • a pair of compression springs 38a, b is arranged between each shoulder 34a, b and the associated foundation 36a, b, the associated compression springs resting against the shoulder 34a, b or the foundation 36a, b under tension.
  • associated angles 40a, b are welded to the side walls 22, 24.
  • the distance between floor 16 and the associated treatment surface 20 is somewhat less than the distance stood between floor 14 and treatment surface 18.
  • the corresponding distances are dependent on the goods to be treated, as explained above.
  • the distance between the treatment surface 20 of the treatment line 12 and the floor 14 of the treatment line 10 arranged above it is a multiple of the last-mentioned distance between the components 14, 18.
  • the floors 14, 16 can be designed in the same way as the treatment surfaces 18, 20, in particular profiles can also be provided on the floors 14, 16.
  • FIG. 1a shows that the treatment lines 10, 12 or the associated components are provided with a slope, specifically from a feed area 44 to a removal area 46.
  • the feed area 44 has a device 48 which essentially has the shape of a shaft and is shown in an enlarged (schematic) representation in FIG. 1b.
  • the device has a receiving funnel 50, to which two slide sections 52, 54, which run at an angle a to one another with a slope toward the floor 14, are connected, which pass over steps 56, 58 into lower slide sections 60, 62.
  • the slide sections 60, 62 run with a shape that widens trapezoidally when viewed from above.
  • vertical slats 64 are arranged on the slide sections 60, 62, widening at a distance from one another, and their distance from one another in the area of step 58 is smaller than at the opposite end.
  • the bottom of the slide sections 60, 62 is designed as a sieve bottom 66.
  • the front end of the sieve plate 66 in the transport direction A merges into the initial region of the plate 14 and is arranged somewhat above it.
  • the device 48 continues with a free-fall section 68, which, as shown in FIG. 1b, is likewise divided into vertically extending chambers 72 with vertical slats 70.
  • the bottom of the free fall section 68 is in turn designed as a sieve plate 74, with a smaller mesh size than the sieve plate 66.
  • the front edge of the sieve plate 74 in the transport direction A is arranged somewhat above the plate 16, which adjoins the sieve plate 74 directly.
  • a funnel-shaped discharge 76 is arranged below the sieve bottom 74.
  • two further collecting funnels 78, 80 are arranged one behind the other in the transport direction A, which are directed together with the discharge 76 onto a common (not shown) conveyor belt.
  • the treatment line 10 is closed at the top with two cover plates 82, 84 arranged in a vault-like manner in the transport direction A, each of which has a suction device 86 on the top side.
  • two downwardly angled channels 88, 90 connect to the treatment lines 10 and 12, respectively, which are directed towards a conveyor belt (not shown).
  • a shaft 92 projects through the side walls 22, 24, in which it is rotatably mounted. On the outside there is an imbalance disc with variable mass on the shaft ends. Each imbalance disk 94 is rigidly connected to the shaft 92. On the free end assigned to the side wall 24, a pulley 96 also sits on the shaft 92 and serves to receive a belt (not shown) which is guided at a distance from the pulley 96 around a further pulley which is seated on a motor shaft. The belt drive thus serves to rotate the shaft 92.
  • an eccentric drive can also be provided, for example.
  • the invention also provides for the possibility of placing a vibration device directly on one or both side walls 22, 24 and / or the floors 14, 16 or treatment surfaces 18, 20.
  • FIG. 6 shows an example of a flow diagram for the mechanical treatment of quicklime with a plant according to the invention.
  • the material flow first passes through a sieve, on which the grain fraction larger than 50 mm is separated off. It has been found that the proportion of the sulfur-laden surface to the total volume of these pieces is relatively small, so that when viewed in terms of the mass as a whole the sulfur content is within the permissible range, so that this material is not mechanically desulfurized in the exemplary embodiment shown needs.
  • the remaining material flow (less than 50 mm) passes through the desulfurization plant according to the invention.
  • the material reaches the chutes 52, 54 via the receiving funnel 50 and divides into two equally large streams. Due to the gradient of the slide sections (chutes) 52, 54, the material slides further down. It reaches the slide sections 60, 62 where each material flow is further divided into five partial flows by the lamellae 64. Because of the geometrical arrangement of the lamellae 64, the partial flows are guided such that they are evenly distributed over the entire width of the system at the transition to the floor 14.
  • a screening also takes place along the paths 60, 62, the material being less than 30 mm down through the sieve plate 66 and the free fall section 68 to the sieve plate 74, where a further sieving takes place and only the material smaller than 10 mm is allowed to pass.
  • the latter is fed to a screen via the discharge 76 without mechanical surface treatment, which will be described in more detail below.
  • the two grain fractions 30 to 50 mm and 10 to 30 mm then reach the associated bottoms 14 and 16 from the screen surfaces 66, 74 either due to their inclinations and / or due to connected vibrating devices.
  • the said one can Device 48 With mechanical connection to the side walls 22, 24, the said one can Device 48 can be set in motion by the unbalance drive 92, 94.
  • a short-wave oscillating movement is transmitted via the rigid side walls 22, 24, the height of the corresponding oscillation amplitude being adjustable, inter alia, by the configuration and arrangement of the unbalanced mass 94.
  • an oscillation amplitude of 20 mm is selected.
  • the forces transmitted by the mass 94 are absorbed by the compression spring pairs 38a, b.
  • the device as a whole is moved on an approximately circular path of movement, with a direction of movement as indicated by the arrow B.
  • each piece of lime is moved back and forth between the floor and the treatment surface with a slightly different orientation, so that always different surface sections come into contact with the abrasion elements.
  • This effect is reinforced by the selection of an elastic base 14 or 16.
  • the elastic floor as a whole also experiences deformations when the device is vibrated, so that the distance between the floor and the associated treatment surface is additionally dependent on the respective deformation of the elastic floor 14 or 16.
  • the individual pieces of lime meet again at differently inclined surfaces, as a result of which they are returned at a new angle.
  • the individual pieces of material between the tray 14, 16 and the associated treatment surface 18, 20 are " dancing" from the feed area 44 to the removal area 46, where there is a large number of surface contacts between material and treatment surface 18, 20 or floor 14, 16 due to the high pulse rate.
  • the choice of the length of the system or the set pulse rate as well as the other aforementioned parameters are set depending on the piece goods to be treated in each case.
  • the geometric design of the tools on the underside of the treatment surfaces 18, 20 or — as an alternative embodiment provides — also be set on the corresponding floors 14, 16.
  • the treatment surfaces 18, 20 have the same design over the entire conveying path, in a manner similar to a grater with projections which are pressed downwards and open in the direction of arrow A.
  • the material abrasion thus takes place by streaking the individual grain along the expressed surface section, whereby a " softer" material abrasion is achieved than if the individual parts hit the openings 30 of the expressed ab cuts 32 would be thrown, as would be possible by reversing the direction of rotation of the unbalanced mass 94.
  • the surface areas of troughs on the surface of a piece of lime are rubbed in almost the same way and at the same depth, since, due to the material guide according to the invention, abrasion knobs, such as the expressed sections 32, can also get into such troughs.
  • the rubbed-off fine material is drawn off via the collecting funnels 78, 80 and fed to the same sieve into which the fine flow drawn off from the feed area also reaches.
  • the mechanically desulfurized coarse grain passes through the channels 88, 90 from the plant, for example, into a silo (not shown).
  • a partial flow of the grain fraction 10 to 50 mm also flows into this, which is drawn off at the end of a roll crusher system into which the initially branched oversize (larger than 50 mm) is fed.
  • a burnt lime with an S0 3 content of 0.13 weight percent in the grain fraction 10 to 50 mm is available as the starting material.
  • the material was then fed into the system according to the drawing and passed through it in a co-flow. Approximately 15 percent by weight of material was removed along the treatment section, that is, 15 percent by weight of the feed stream was withdrawn via the removal devices 76.78.80.
  • the remaining 85 percent by weight in the 10 to 50 mm grain range then had an S0 3 content of only 0.05 percent by weight, which corresponds to a reduction of about 60 percent. A drastic reduction in the S0 3 content could be achieved with very little material loss.
  • the material can also be placed on a defined (horizontal) surface and hurled against a treatment surface arranged above it, among other things via the setting of a specific time interval and the applied pulse the intensity of surface abrasion can be controlled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Crushing And Grinding (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Claims (31)

1. Procédé pour réaliser le traitement mécanique de la surface de substances en morceaux, selon lequel la substance, à laquelle on applique une impulsion mécanique, est projetée en va-et-vient entre un fond et une surface de traitement située à une certaine distance de ce fond, caractérisé en ce qu'on soumet la substance à une contrainte le long du trajet de déplacement et/ou pendant un intervalle de temps déterminé, entre le fond (14, 16) et la surface de traitement (18, 20), qui est pourvue de parties profilées (32), au moins sur des sections partielles, jusqu'à ce que l'on obtienne un enlèvement superficiel désiré de matière.
2. Procédé selon la revendication 1, caractérisé en ce qu'on applique des impulsions mécaniques selon une succession dense à la substance située sur le fond de déplacement (14,16), et qu'on applique les impulsions à la substance, de préférence par l'intermédiaire d'un dispositif appliquant des vibrations, des chocs ou des oscillations au fond (14,16) et/ou à la surface de traitement (18, 20).
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'accélération appliquée à la substance au moyen d'une impulsion est suffisamment intense pour être égale à un multiple de l'accélération de la pesanteur, lorsque la substance atteint la surface de traitement (18, 20).
4. Procédé selon la revendication 3, caractérisé en ce que l'accélération de la substance est comprise entre le triple et le sextuple et de préférence entre le quadruple et le quintuple de l'accélération de la pesanteur.
5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la substance est entraînée le long du trajet de déplacement et/ou pendant un intervalle de temps déterminé, lors de ses déplacements, entre le fond (14,16) et la surface de traitement (18,20), sous des angles différents par rapport au fond (14,16) ou par rapport à la surface de traitement (18, 20).
6. Procédé selon la revendication 5, caractérisé en ce que la substance est entraînée, par l'intermédiaire d'un fond déformable, de préférence élastique (14, 16), contre une surface déformable, de préférence élastique, de traitement (18, 20).
7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce qu'on déplace la substance le long d'une section en pente.
8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que la substance se déplace, en rotation sur elle-même, entre le fond (14,16) et la surface de traitement (18, 20).
9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce qu'on répartit la substance de départ en écoulements possédant des fractions granulométriques différentes et qu'on traite ces écoulements séparément les uns des autres.
10. Procédé selon l'une des revendications 1 à 9 pour le traitement de la chaux en morceaux.
11. Procédé selon la revendication 10, caractérisé en ce que, lors de son introduction dans l'espace présent entre le fond (14,16) et la surface de traitement (18, 20), le matériau de départ est amené en contact avec une substance, qui réagit avec la surface.
12. Dispositif pour réaliser le traitement mécanique de surfaces de substances en morceaux, comportant au moins un fond de déplacement pour la substance et une surface de traitement associée à ce fond, en en étant située à une certaine distance, ainsi qu'un dispositif pour appliquer une impulsion mécanique à la substance à traiter, caractérisé en ce que la surface de traitement (18,20) comporte, au moins sur des sections partielles, des parties profilées.
13. Dispositif selon la revendication 12, caractérisé en ce que le fond (14,16) et/ou la surface de traitement (18,20) est (sont) réalisé(s) de manière à être déformable(s), de préférence élastiquement.
14. Dispositif selon la revendication 12 ou 13, caractérisé en ce que le dispositif servant à appliquer l'impulsion mécanique à la substance à traiter est monté sur le fond (14, 16) et/ou sur la surface associée de traitement (18, 20) et/ou sur des éléments (22, 24) reliant le fond (14,16) de la surface associée de traitement (18, 20), ou agit, au moyen d'organes intermédiaires correspondants, sur ces éléments.
15. Dispositif selon l'une des revendications 12 à 14, caractérisé en ce que le fond (14, 16) et/ou la surface de traitement (18,20) est (sont) supporté(s) élastiquement, directement ou indirectement, de préférence sur des ressorts ou des blocs élastiques et est (sont) déplaçable(s) par un agitateur (92, 94) réalisant une agitation forcée.
16. Dispositif selon la revendication 15, caractérisé en ce que l'agitateur réalisant une agitation forcée est un vibrateur, de préférence un vibrateur électrique.
17. Dispositif selon la revendication 15, caractérisé en ce que l'agitateur (92, 94) réalisant une agitation forcée est formé par un dispositif à balourd (94), qui est monté fixe sur un arbre (92) entraîné en rotation par un moteur.
18. Dispositif selon l'une des revendications 12 à 17, caractérisé en ce que le fond (14, 16) et/ou la surface de traitement (18,20) est (sont) déplaçable(s) sur une trajectoire de déplacement circulaire ou en forme de développante.
19. Dispositif selon l'une des revendications 12 à 18, caractérisé en ce que le fond (14, 16) et la surface de traitement (18, 20) peuvent être déplacés d'une manière asynchrone l'un par rapport à l'autre.
20. Dispositif selon l'une des revendications 12 à 19, caractérisé en ce que l'angle d'inclinaison du fond (14,16) et/ou de la surface de traitement (18, 20) est réglable par rapport à l'horizontale.
21. Dispositif selon les revendications 12 à 20, caractérisé en ce que le fond (14,16) comporte, au moins sur des sections partielles, des parties profilées (32).
22. Dispositif selon la revendication 21, caractérisé en ce que les parties profilées sont constituées par des parties saillantes et des parties de forme sphérique, hémisphérique, en forme de quart de sphère, de forme cubique, ondulée, en dents de scie et/ou pyramidale et/ou possèdent une forme de brosse.
23. Dispositif selon la revendication 21 ou 22, caractérisé en ce que la surface de traitement (18, 20) est subdivisée en des zones possédant des profils différents.
24. Dispositif selon l'une des revendications 12 à 23, caractérisé en ce que la distance entre le fond (14, 16) et la surface associée de traitement (18, 20) est inférieure au double du diamètre maximum de la substance en morceaux déposée, et est supérieure à ce diamètre.
25. Dispositif selon l'une des revendications 12 à 24, caractérisé en ce que le fond (14, 16) et/ou la surface de traitement (18, 20) est (sont) constitué(s) par un tapis en caoutchouc (28), de préférence un tapis en caoutchouc dur.
26. Dispositif selon l'une des revendications 12 à 25, caractérisé en ce que, sur l'extrémité située côté chargement, se trouve disposé un dispositif (48) servant à répartir la substance sur toute la largeur du fond (14, 16).
27. Dispositif selon l'une des revendications 12 à 26, caractérisé en ce qu'au moins un dispositif récepteur (78, 80) est prévu au-dessous du fond (14,16).
28. Dispositif selon l'une des revendications 12 à 27, caractérisé par un capot (82, 84) étanche au son et à la poussière ainsi que par au moins un dispositif d'aspiration (86), qui y est raccordé.
29. Installation comportant au moins deux dispositifs selon l'une des revendications 12 à 28 pour réaliser le traitement superficiel mécanique de substances en morceaux possédant des fractions granulométriques différentes.
30. Installation selon la revendication 29, caractérisée en ce que, côté chargement, il est prévu un dispositif de tamisage (66, 76) servant à séparer les écoulements du matériau.
31. Chaux en morceaux provenant de préférence d'une unité de combustion fonctionnant avec des combustibles sulfureux, et traité selon le procédé conforme à l'une des revendications 1 à 11 et/ou avec un dispositif ou une installation selon l'une des revendications 12 à 30.
EP86900648A 1985-12-21 1985-12-21 Procede et dispositif d'elimination mecanique de la surface d'objets en morceaux Expired EP0265422B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86900648T ATE44348T1 (de) 1985-12-21 1985-12-21 Verfahren und vorrichtung zur mechanischen entfernung von oberflaechen stueckiger gueter.

Applications Claiming Priority (1)

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PCT/DE1985/000553 WO1987003826A1 (fr) 1985-12-21 1985-12-21 Procede et dispositif d'elimination mecanique de la surface d'objets en morceaux

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EP0265422A1 EP0265422A1 (fr) 1988-05-04
EP0265422B1 true EP0265422B1 (fr) 1989-07-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425452A1 (de) * 1994-07-19 1996-01-25 Kloeckner Humboldt Deutz Ag Verfahren und Vorrichtung zur Desagglomeration von agglomeriertem Gut

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE87456C (fr) *
DE942551C (de) * 1956-04-19 Spanner Straubmg Hermann (Ndb) Verfahren zum Freilegen der Kerne von Sonnenblumensamen
DE401027C (de) * 1923-12-14 1924-08-25 Engelsmann Akt Ges J Vorrichtung zum Spitzen von Getreidekoernern
DE897508C (de) * 1951-09-02 1953-11-23 Arno Andreas Brecher
DE1092367B (de) * 1958-03-17 1960-11-03 Rheinische Kalksteinwerke Verfahren zur Herstellung feinkoerniger Bindemittel durch Entsaeuern und Mahlen von grobkoernigem Kalkstein oder von aehnlichen grobkoernigen Karbonaten
US3682397A (en) * 1969-02-27 1972-08-08 Albert G Bodine Apparatus for crushing and separating ore material
US3827186A (en) * 1972-05-30 1974-08-06 Air Prod & Chem Deflashing apparatus
DE3012866A1 (de) * 1980-04-02 1981-10-08 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zum brennen von kalk im drehrohrofen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425452A1 (de) * 1994-07-19 1996-01-25 Kloeckner Humboldt Deutz Ag Verfahren und Vorrichtung zur Desagglomeration von agglomeriertem Gut

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ATE44348T1 (de) 1989-07-15
DE3571300D1 (en) 1989-08-10
EP0265422A1 (fr) 1988-05-04
WO1987003826A1 (fr) 1987-07-02
US4878623A (en) 1989-11-07

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