EP0265422A1 - Verfahren und vorrichtung zur mechanischen entfernung von oberflächen stückiger güter. - Google Patents
Verfahren und vorrichtung zur mechanischen entfernung von oberflächen stückiger güter.Info
- Publication number
- EP0265422A1 EP0265422A1 EP86900648A EP86900648A EP0265422A1 EP 0265422 A1 EP0265422 A1 EP 0265422A1 EP 86900648 A EP86900648 A EP 86900648A EP 86900648 A EP86900648 A EP 86900648A EP 0265422 A1 EP0265422 A1 EP 0265422A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- treatment
- floor
- treatment surface
- goods
- mechanical
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 36
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 36
- 239000004571 lime Substances 0.000 claims abstract description 36
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 62
- 239000011593 sulfur Substances 0.000 claims description 15
- 229910052717 sulfur Inorganic materials 0.000 claims description 15
- 230000033001 locomotion Effects 0.000 claims description 14
- 239000000446 fuel Substances 0.000 claims description 8
- 238000004381 surface treatment Methods 0.000 claims description 8
- 238000005299 abrasion Methods 0.000 claims description 7
- 230000001133 acceleration Effects 0.000 claims description 7
- 239000007858 starting material Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 229920001875 Ebonite Polymers 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000005538 encapsulation Methods 0.000 claims 1
- 230000003116 impacting effect Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 4
- 239000005864 Sulphur Substances 0.000 abstract 3
- 240000006909 Tilia x europaea Species 0.000 description 29
- 238000013461 design Methods 0.000 description 13
- 241000196324 Embryophyta Species 0.000 description 7
- 238000006477 desulfuration reaction Methods 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001788 irregular Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000003077 lignite Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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 removal of surfaces of lumpy goods.
- the surface of lumpy goods must be treated mechanically in the most varied fields of technology. In part, 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.
- the term "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 is based on the object of demonstrating a possibility of mechanically treating lumpy goods in such a way that a largely uniform removal of material is achieved over the entire surface.
- 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, a uniform material removal over the entire surface Seen surface of the piece to reach.
- the invention is also intended to offer the possibility of being used in the industrial field.
- the focus is on the surface treatment of lumpy lime.
- the invention is based on the knowledge that - regardless of the design of the surface - 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 treatment surfaces assigned at a distance is flung back and forth.
- the invention accordingly proposes a method for the mechanical removal of surfaces of lumpy goods, in which the lumpy good, starting from a floor, is thrown against a treatment surface, from there returns to the floor, and the process along a transport path for the lumpy good and / or is repeated over a certain time interval until the desired surface removal has been achieved, the material being accelerated by a mechanical pulse.
- a device which has at least one floor for receiving the good and a treatment area assigned to it at a distance and a device for exerting a mechanical impulse on the good to be treated.
- This device can be provided in various ways.
- a pulsating, movable plunger is guided against the floor in a certain cycle, 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
- Another embodiment of the invention provides for the floor and the treatment surface to be connected to one another via rigid connecting elements, so that a kind of treatment space is created and the forced agitator is attached 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 then accelerates towards the " treatment area " and hits it before it falls back onto the floor surface, usually at a different angle.
- the material is preferably 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 relation to the quality and quantity of the surface removal.
- a closed flat surface is fundamentally conceivable for certain areas of application, certain geometric designs are proposed in preferred embodiment variants.
- the profiles can have, for example, a cone, pin, ball, hemisphere, quarter ball, wave, saw tooth 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”, especially the projecting sections, mean that - as soon as the goods are thrown against them - not only do protruding edges and corners break off or smooth surfaces are rubbed or brushed off, but in particular recessed surface parts can also be removed if for example, a pyramid-like protrusion comes into the region of a depression on the surface.
- optimization in the sense of a uniform surface removal is achieved in particular if the piece to be treated is guided from the floor against the treatment surface along the transport path and / or during a certain time interval in as different directions as possible and there, if necessary, to different surfaces. 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 carried out by an elastic material of the floor and / or the treatment area is reached.
- the piece goods are then not only flung back and forth between the floor and the treatment surface due to their irregular surface and / or inclination of the treatment line consisting of the floor and the treatment surface, but this effect is further reinforced by the elastic surfaces, the respective geometrical alignment of which is further influenced by the forced agitator. Similar to a trampoline, the parts are then caught and flung away, reinforced by the additional impulse from the forced agitator. Counter-vibrations are set up with variable frequency distribution. The process is preferably selected so that the acceleration of the goods when the treatment area is reached is a multiple of the acceleration due to gravity, preferably three to six times.
- An optimization of the surface removal can be achieved in that the floor is also designed with profiling in an analogous manner to the treatment area and thus also acts as an "active area".
- a distance of less than twice the largest general cargo diameter has proven to be particularly advantageous. Within this range, a distance that is 20 to 40% larger than the largest diameter is preferred.
- the effect of the corresponding treatment surfaces is then 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 which previously were not accessible using known methods, in particular recessed surface parts.
- the forced agitators described require only relatively little electrical energy when generating strong mechanical impulses and high efficiency.
- changes in the sense of a different one are easily made Good stress possible, whereby one and the same device can be adapted to the most varied piece goods to be treated.
- the system is particularly compact.
- a forced agitator can act on both devices or their parts together, for example, in that the treatment lines are connected to one another, for example via a fixed mechanical linkage, and are 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 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 be additionally improved for such an application by spraying a moisture mist (water mist) 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 stream to be treated into partial streams of different grain fractions, as has already been explained above, but also to send different treatment lines, for example with the inclination, according to the desired surface removal, so that - regardless of the grain size - an approximately equally thick layer is always removed.
- the mechanically desulfurized material also differs in its external 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 process and the device is also particularly easy to handle and enables quick and effective processing of the goods.
- This shows a system for the 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 accordingly serves for the mechanical desulfurization of the lime in the surface area.
- Figure la A longitudinal section through a plant according to the invention for the mechanical surface treatment of lime.
- Figure lb An enlarged view of the task area of the system according to Figure la.
- Figure 2 A cross section through the system of Figure 1.
- Figure 3 An enlarged sectional view of the treatment area of the system according to Figures 1, 2 seen against the transport direction.
- Figure 4 An enlarged sectional view of the treatment area perpendicular to the direction of transport.
- Figure 5 A top view of the floor of a treatment line of the system according to Figure la.
- FIGS. 1 to 5 A flow chart to illustrate the individual process steps in the treatment of lump lime according to a preferred embodiment.
- the plant 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 base 14 or 16. A so-called treatment surface 18, 20 is arranged above and parallel to each base.
- 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 transverse struts 26a.
- a blanket is stretched be ⁇ 28 and solidifies, (not shown), for example, via a tensioning device in the frame area or suitable sterver ⁇ compounds.
- the blanket shows over its surface in the longitudinal direction and perpendicular to it at a distance from each other closed strips 28a, which include rectangular areas 28b.
- the areas 28b are provided with a plurality of through openings 28c.
- the rubber blanket can, for example, consist of a hard rubber material.
- 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 arranged in the direction the associated base 14 or 16, expressed and opened only in the sports direction of the material to be treated (arrow direction A), are designed.
- 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 arranged at a close distance from one another.
- FIGS. 3 and 4 show a front view or a side view of the treatment surfaces 18, 20, wherein, in particular, FIG. 4 shows a sawtooth shape of the individual expressed sections 32 in longitudinal section, which are open in the direction of transport (arrow A).
- the treatment areas 18, 20 are designed over their entire area in the manner described.
- 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.
- 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 the floor 16 and the associated treatment area 20 is somewhat smaller than the distance between the floor 14 and the treatment area 18.
- the corresponding distances are dependent on the item to be treated, as explained above has been.
- 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 in the same manner as the Behand ⁇ lung surfaces 18,20 be designed, in particular profiles can also on the trays 14, '16 is provided to were ⁇ .
- FIG. 1 a 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 loading 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 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.
- vertically extending lamellae 64 are arranged on the slide sections 60, 62, the distance from one another of which is smaller in the area of the step 58 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 direction of transport A merges into the initial area 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 also divided into vertically extending chambers 72 with vertical slats 70.
- the bottom of the free-fall section 68 is again 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 upper side of the handling line 10 is closed off 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 upper side.
- two downwardly angled channels 88, 90 adjoin 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.
- Each imbalance disk 94 is rigidly connected to the shaft 92.
- the belt drive thus serves to rotate the shaft 92.
- an eccentric drive can also be provided, for example.
- the invention provides 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. 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 considered as a mass, the sulfur content is within the permissible range, so that this material is shown in the figure Embodiment does not need to be desulfurized mechanically.
- 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 slope of the slide sections
- a sieving also takes place along the paths 60, 62, the material reaching less than 30 mm down through the sieve bottom 66 and the free-fall path 68 to the sieve bottom 74, where further sieving takes place and only the material smaller than 10 mm is let through becomes.
- 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 inclination and / or due to connected vibration devices.
- said device 48 With mechanical connection to the side walls 22, 24 said device 48 can be set in motion by the unbalance drive 92, 94.
- unbalance mass 94 is adjustable. In the exemplary embodiment shown, 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 movement path, with a movement direction as indicated by the arrow B.
- the individual piece of lime is moved back and forth each time with a slightly different orientation between the floor and the treatment surface, so that always different surface sections come into contact with the abrasion elements.
- This effect is reinforced by the selection of an elastic floor 14 or 16.
- the elastic base undergoes deformation as a whole during the oscillating movement of the device, so that the distance between the base and the associated treatment surface is additionally dependent on the respective deformation of the elastic oscillating base 14 or 16.
- the individual pieces of lime meet again at differently inclined surfaces, which means that they are returned at a new angle.
- 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 an entrainment of the individual grain over the expressed surface section, whereby a "softer" material abrasion is achieved than if the individual parts were thrown against the openings 30 of the expressed sections 32, as is done by reversing the direction of rotation of the Unbalance mass 94 would be possible.
- a very smooth surface of the individual pieces of lime is reached, which indicates a particularly gentle treatment.
- 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 stream drawn off from the feed area also reaches.
- the mechanically desulphurized 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 quicklime is included as the starting material a SOg content of 0.13 percent by weight in the grain fraction 10 to 50 mm is available.
- the material was then fed into the system in accordance with the drawing and passed through it in cocurrent. Approx. 15 percent by weight of material was removed along the treatment section, that is, 15 percent by weight of the quantity flow was withdrawn via the removal devices 76.78.80.
- the remaining 85 percent by weight in the grain size range from 10 to 50 mm then had an S0 “content of only 0.05 Percent by weight, which corresponds to a reduction of about 60 percent. A drastic reduction in the S0 ,, content could thus be achieved with very low material losses.
- 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 the surface abrasion 'can be controlled. If a particularly gentle surface removal is desired, it can be sufficient to design the treatment area without profiling or only roughened or to push the sheet outwards (away from the floor), so that only “negligible" discontinuities are formed in the treatment area for the material guided against it become.
Landscapes
- 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)
Description
Claims
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)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/DE1985/000553 WO1987003826A1 (fr) | 1985-12-21 | 1985-12-21 | Procede et dispositif d'elimination mecanique de la surface d'objets en morceaux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0265422A1 true EP0265422A1 (de) | 1988-05-04 |
| EP0265422B1 EP0265422B1 (de) | 1989-07-05 |
Family
ID=6776235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86900648A Expired EP0265422B1 (de) | 1985-12-21 | 1985-12-21 | Verfahren und vorrichtung zur mechanischen entfernung von oberflächen stückiger güter |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4878623A (de) |
| EP (1) | EP0265422B1 (de) |
| AT (1) | ATE44348T1 (de) |
| DE (1) | DE3571300D1 (de) |
| WO (1) | WO1987003826A1 (de) |
Families Citing this family (2)
| 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 |
| CN110639830B (zh) * | 2019-09-16 | 2024-05-28 | 陕西科技大学 | 粉末冶金压坯检测码盘全自动生产线及其工作方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE942551C (de) * | 1956-04-19 | Spanner Straubmg Hermann (Ndb) | Verfahren zum Freilegen der Kerne von Sonnenblumensamen | |
| DE87456C (de) * | ||||
| 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 |
-
1985
- 1985-12-21 DE DE8686900648T patent/DE3571300D1/de not_active Expired
- 1985-12-21 AT AT86900648T patent/ATE44348T1/de not_active IP Right Cessation
- 1985-12-21 EP EP86900648A patent/EP0265422B1/de not_active Expired
- 1985-12-21 WO PCT/DE1985/000553 patent/WO1987003826A1/de not_active Ceased
- 1985-12-21 US US07/192,513 patent/US4878623A/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8703826A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3571300D1 (en) | 1989-08-10 |
| WO1987003826A1 (fr) | 1987-07-02 |
| EP0265422B1 (de) | 1989-07-05 |
| US4878623A (en) | 1989-11-07 |
| ATE44348T1 (de) | 1989-07-15 |
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