EP3651915B1 - Screen segment having a wear protection and method for producing a screen segment - Google Patents

Screen segment having a wear protection and method for producing a screen segment Download PDF

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Publication number
EP3651915B1
EP3651915B1 EP18739842.5A EP18739842A EP3651915B1 EP 3651915 B1 EP3651915 B1 EP 3651915B1 EP 18739842 A EP18739842 A EP 18739842A EP 3651915 B1 EP3651915 B1 EP 3651915B1
Authority
EP
European Patent Office
Prior art keywords
antiwear
unit
wear protection
insert
screen segment
Prior art date
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Active
Application number
EP18739842.5A
Other languages
German (de)
French (fr)
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EP3651915A1 (en
Inventor
Baris Irmak
Marc TIGGES
Daniel Evermann
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.)
ThyssenKrupp AG
ThyssenKrupp Industrial Solutions AG
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ThyssenKrupp AG
ThyssenKrupp Industrial Solutions AG
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Application filed by ThyssenKrupp AG, ThyssenKrupp Industrial Solutions AG filed Critical ThyssenKrupp AG
Priority to PL18739842T priority Critical patent/PL3651915T3/en
Publication of EP3651915A1 publication Critical patent/EP3651915A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4663—Multi-layer screening surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4618—Manufacturing of screening surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4627—Repairing of screening surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4645—Screening surfaces built up of modular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/04—Casting in, on, or around objects which form part of the product for joining parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal

Definitions

  • the invention relates to a sieve segment and a sieve device with a wear protection unit.
  • the invention also relates to a method for producing a screen segment.
  • sieve devices For the processing of raw materials, especially mineral crushed goods, such as oil sand, coal and ores such as iron ore and nickel ore, sieve devices with a large number of sieve segments are used, which classify the material to be shredded or already shredded into at least two grain fractions by means of vibration.
  • a screening device is for example in the DE102007034512B3 described.
  • the materials to be classified are often materials with a high hardness that are highly abrasive. There is heavy wear on the surface of the sieve segments, which results in very short maintenance intervals and high reprocessing costs for the sieve segments.
  • DE 195 28 512 A1 discloses a wear part for an impact body for mounting in a hammer crusher or impact crusher with a metal carbide insert.
  • wear protection elements are extremely wear-resistant, but at the same time also react relatively brittle to possible impact loads. Such impact loads often occur in the feeding area of the screening device where the material to be classified is fed onto the screening device. This often leads to very high wear and tear and damage to the entire sieve, which can also result in failure of the entire sieving system.
  • this object is achieved by a sieve segment with the features of independent device claim 1 and by a method for producing a sieve segment with the features of independent method claim 12.
  • a sieve segment of a sieve device for separating or classifying feed material, in particular crushed mineral materials such as oil sands, into at least two grain fractions comprises, according to a first aspect, an essentially sieve-shaped base plate with a plurality of sieve passages, with at least one wear protection unit being attached to the base plate.
  • the wear protection unit is formed from a metal matrix composite material which has a wear protection insert made from a hard metal and / or from ceramic.
  • the metal matrix composite material has a metal matrix material, the wear protection insert being at least partially cast into the metal matrix material of the wear protection unit.
  • a metal matrix composite material is to be understood as a material made of a metal matrix material such as steel, into which the wear protection insert made of a hard metal and / or ceramic is cast.
  • a sieve segment forms at least part of a sieve device, in particular the sieve surface of a sieve device.
  • a plurality of sieve segments are preferably arranged next to one another to form a sieve surface. It is also conceivable that a sieve device has only one sieve segment which forms the sieve surface.
  • the material to be classified is, for example, mineral crushed goods such as oil sand, coal and ores such as iron ore and nickel ore or cement clinker.
  • the base plate preferably forms the lower region of the sieve segment facing away from the material to be classified and is in particular designed in the form of a plate with a plurality of sieve passages.
  • the sieve passages of the sieve segment are used to classify the material, whereby material with a size below a certain grain size falls through the sieve passages and the material above the certain grain size falls to the side of the Surface of the sieve device falls.
  • the screen passages are, for example, round or rectangular and are arranged in rows with respect to one another, so that the largest possible number of screen passages is arranged next to one another.
  • the screen passages are evenly spaced from one another and have the same or different sizes.
  • the wear protection unit forms at least part of the surface of the screen segment.
  • the wear protection unit serves to protect the surface of the base plate of the sieve segments against wear. In particular, a direct impact of the material to be classified on the surface of the base plate is prevented, the material to be classified first falling onto the wear protection unit and then reaching the base plate
  • the wear protection unit is preferably formed in one piece from the metal matrix composite material.
  • a metal matrix composite material is to be understood as meaning a material made of a metal matrix material such as steel, for example, into which an insert made of a hard metal and / or ceramic is cast.
  • a metal matrix composite material with a wear protection insert made of a hard metal or ceramic offers the advantage of a high wear resistance of the wear protection unit.
  • the wear protection insert is preferably made from a powdery and / or granular mixture of particles (grains) comprising ceramic, aluminum and / or carbides such as boron carbide, tungsten carbide, silicon carbide, the mixture being mixed, heated, in particular gassed, and baked, for example, with a binder, will. In particular, the mixture is heated in a, for example, flexible form which corresponds to the negative form of the wear protection insert. The mixture then cools down and hardens to form a very wear-resistant body with a porous structure.
  • the wear protection insert is arranged on the surface of the wear protection unit.
  • the wear protection insert preferably forms the surface of the wear protection unit.
  • the surface of the wear protection unit points in the direction of the material to be classified and forms the surface on which the material to be classified first hits during operation of the screening device.
  • the underside of the wear protection unit is preferably made of a more ductile material such as steel.
  • the wear insert made of hard metal or ceramic offers a particularly high level of wear protection, the formation of only a part of the wear protection unit from the more expensive material offering a possibility of reducing the overall costs of the wear protection unit.
  • the wear protection insert preferably extends over the entire surface of the wear protection unit.
  • the wear protection unit is produced by a casting process.
  • the wear protection unit is completely cast, with the exception of the wear insert.
  • the production of the wear protection unit by casting offers a very simple and inexpensive production method, and complex shapes can also be produced in a simple manner.
  • the wear protection unit has a wear protection element which is attached to an outwardly facing side surface of the wear protection unit.
  • the wear protection element is preferably made from a sintered hard metal such as tungsten carbide, titanium carbide, boron carbide, niobium carbide, chromium carbide or ceramic or from a mixture of these materials.
  • the wear protection unit has a recess in which the wear protection unit is attached. The wear protection element provides additional wear protection on the outwardly facing side surfaces of the wear protection unit.
  • the wear protection element is materially connected to the wear protection unit, in particular welded, sintered, glued or soldered.
  • the wear protection insert is formed from hard metal, such as, for example, tungsten carbide, titanium carbide, boron carbide, niobium carbide, chromium carbide or ceramic, or from a mixture of these materials.
  • the wear protection insert is at least partially cast into the wear protection unit.
  • the wear protection unit preferably has a plurality of wear protection inserts which are at least partially cast into the wear protection unit.
  • the relatively simple manufacturing method of casting the wear protection unit makes it possible to arrange a plurality of wear inserts in such a way that the areas of the wear protection unit that are exposed to high wear have a wear protection insert.
  • the plurality of wear protection inserts comprises a plurality of particles, in particular hard metal or ceramic particles or diamonds.
  • Each wear protection insert preferably consists of exactly one particle, the wear protection inserts being arranged in a disordered manner in the metal matrix material.
  • the wear protection insert is designed in such a way that the metal matrix material infiltrates into the wear protection insert and thus an integral connection is established.
  • the wear protection insert has a thickness of approximately 5 mm to 50 mm, preferably 10 mm to 15 mm.
  • the wear protection unit preferably has at least one web or several webs which extend along the base plate.
  • the base plate also has, for example, a fastening area on each of its longitudinal sides and a classification area with a plurality of sieve passages between the fastening areas.
  • the fastening area is used to fasten the base plate to, for example, a carrier of the screening device.
  • the wear protection unit preferably extends from one fastening area over the classification area to the opposite fastening area.
  • the wear protection unit is at least partially spaced apart from the base plate and preferably has projections that rest on the base plate and recesses that are spaced apart from the base plate. This enables, for example, additional wear protection to be attached to the base plate.
  • the wear protection insert has a porous structure, the wear protection insert preferably having a plurality of pores which, for example, are evenly distributed and / or formed. For example, the pores are honeycombed.
  • the wear protection insert is preferably designed in one piece and, for example, in the form of a plate.
  • the wear protection unit has at least one web and two flange areas each connected to one end of the web, the flange area of the wear protection unit being connected to the base plate.
  • the flange area is materially, positively or non-positively connected to the base plate, in particular screwed.
  • the wear protection unit preferably has exactly two webs.
  • the wear protection unit has more than two webs, in particular three, four or five webs.
  • the webs preferably extend orthogonally to the direction of movement of the material to be classified and run along the base plate.
  • the webs are, for example, at a distance from one another which corresponds approximately to the diameter of the sieve passages or is greater than the diameter of the sieve passages.
  • the invention further comprises a sieve device with at least one sieve segment as described above, at least one vibration exciter which is connected to the at least one sieve segment in order to move the latter in an oscillating manner.
  • the screening device has, in particular, a feed area onto which the material to be classified is fed, and a discharge area from which the classified material leaves the screening device.
  • the wear protection units are preferably only attached to the feed area, so that the material fed onto the screening device hits the wear protection unit first.
  • the sieve device preferably has a plurality of sieve segments with sieve passages, the size of the sieve passages of the sieve segments and the distance between the wear protection units, in particular the webs of the wear protection units from one another, being at least partially different over the length of the sieve device.
  • a wear protection element made of a hard metal and / or ceramic is attached to the cast wear protection unit.
  • the wear protection element is preferably materially connected to the wear protection unit.
  • Fig. 1 and 2 is a sieve segment 10 for classifying coarse-grained material, in particular mineral material from an open pit, mineral crushed goods such as oil sands, coal and ores such as iron ore and nickel ore or cement clinker, shown in at least two grain sizes.
  • the sieve segment 10 has a base plate 12 with a plurality of sieve passages 14 which extend through the base plate 12.
  • the sieve passages 14 are preferably evenly spaced from one another and arranged in rows next to one another.
  • the sieve passages 14 are square, with shapes deviating therefrom, such as circular, rectangular or polygonal, also being conceivable.
  • the base plate 12 is arranged on the underside, in particular on the side of the sieve segment 10 facing away from the material to be classified, and is formed, for example, from steel, in particular a high-temperature-resistant steel.
  • the base plate 12 has a rectangular cross section.
  • the upper side of the sieve segment 10 is understood to mean the side which first comes into contact with the material to be classified when this is placed on the sieve segment.
  • the underside is the opposite side facing away from the material.
  • the base plate 12 is designed in the form of a sieve and has, for example, a plurality of parallel, uniformly spaced rods which are aligned in the longitudinal direction, in particular in the direction of movement of the material to be classified. Orthogonally to this, the base plate 12 has a plurality of parallel, uniform ones to one another spaced rods which cross the longitudinal rods and form the sieve passages 14. The orthogonal bars of the base plate 12 are in the view of Fig. 1 not visible.
  • the base plate 12 has a fastening area 16 on each of its sides running in the longitudinal direction, which has an essentially flat surface and no sieve openings 14.
  • the fastening areas 16 each have a plurality of fastening holes 18, by means of which the sieve segment 10 is fastened to a carrier 20, for example by means of screws.
  • a classification area 26, which has the plurality of sieve passages 14, is formed between two fastening areas 16 of a base plate 12.
  • the sieve segment 10 furthermore has a plurality of wear protection units 24 which are attached to the base plate 12.
  • the wear protection units 24 are each attached to the fastening area 16 of the base plate 12 and extend from one fastening area 16 via the classification area 26 to the opposite fastening area 16.
  • a wear protection unit 24 of the exemplary embodiment in FIG Fig. 1 and 2 has two parallel webs 28 which, for example, extend transversely to the direction of movement of the material to be classified. It is also conceivable that the webs extend along the bars of the base plate 12 in the direction of movement of the material to be classified.
  • the webs 28 are connected to one another at their ends via a flange region 30 which runs approximately orthogonally to the webs 28.
  • the flange areas 30 of the wear protection units 24 are screwed to the base plate 12 by means of screws 22. It is also conceivable to fasten the wear protection units 24 to the base plate 12 by means of a material connection such as welding or gluing. In the embodiment of Fig. 1 and 2 the wear protection unit 24 is fastened to the base plate 24 only via the flange regions 30. It is also possible to fasten the wear protection units 24 in further areas on the base plate 12, in particular on the bars of the base plate 12 that run transversely to the webs 28 of the wear protection units 24.
  • the wear protection unit 24 has projections 32 on the underside of the webs the base plate 12 rest.
  • the projections rest, for example, on the bars of the base plate 12 running transversely to the webs 28 of the wear protection unit 24, so that the wear protection unit 24 is spaced apart from the bars of the base plate 12 running parallel to the webs 28 of the wear protection unit 24.
  • the wear protection unit 24 can, for example, also rest or be fastened over the entire length on the upper side of the base plate 12.
  • Fig. 3 shows a detailed representation of the wear protection unit 24, the area of the wear protection unit 24 that is screwed to the base plate 12 being shown in a cross section.
  • the wear protection unit 24 is formed from a metal matrix composite material which has a wear protection insert 34 made from a hard metal or ceramic.
  • the wear protection insert 34 is arranged on the upper side of the wear protection unit 24 and, for example, forms the entire surface of the wear protection unit 24.
  • the wear protection insert 34 can, for example, also form only part of the surface of the wear protection unit 24.
  • the wear protection insert 34 comprises, for example, tungsten carbide, ceramic, titanium carbide, boron carbide or chromium carbide and has a porous or honeycomb structure.
  • the wear protection insert 34 is formed in one piece and has, for example, a thickness of 5 mm to 50 mm, preferably 10 mm to 15 mm.
  • the wear protection unit 24 is formed from the metal matrix material, the wear protection insert 34 being at least partially enclosed by the metal matrix material, in particular being cast into it.
  • the metal matrix material is, for example, high-temperature resistant steel and / or a steel with a hardness of approximately 150-400 HB (Brinell).
  • a high-temperature-resistant steel is to be understood as meaning a heat-resistant steel with a high chromium-nickel content, which has a temperature resistance of up to 650.degree. C., in particular up to 1000.degree.
  • Such steels are, for example, austenitic chrome-nickel steels, such as GX25CrNiSi18-9, GX40CrNiSi25-12, GX40NiCrSiNb35-26.
  • High-temperature-resistant steels up to 600 ° C are, for example, steels according to DIN EN 10213.
  • High-temperature-resistant steels up to 1200 ° C are, for example, steels according to DIN EN 10295.
  • the lower area of the wear protection unit facing towards the base plate 12 is made of the metal matrix material.
  • a wear protection element 36 is attached to the wear protection unit 24.
  • the wear protection element is formed, for example, from ceramic and / or a hard metal, such as tungsten carbide, titanium carbide, boron carbide or chromium carbide.
  • the wear protection element 36 is attached to the flange area 30, in particular on the outwardly facing side surface of the wear protection unit 24, preferably welded, soldered, glued or screwed.
  • the wear protection insert 34 has, for example, the shape of a plate and is positioned on the upper side, in particular the side surface of the wear protection unit facing in the direction of the material to be classified.
  • the wear protection unit 24 is then cast from the metal matrix material so that the wear protection insert 34 is at least partially enclosed by the cast material of the wear protection unit 24, the casting material infiltrating, for example, into the porous structure of the wear protection insert 34. In particular, the wear protection insert 34 is completely enclosed by the casting material.
  • the wear protection element 36 is then attached to the wear protection unit 24, in particular soldered.
  • a plurality of such sieve segments 10 are arranged next to one another in an inclined plane on a carrier 20 and form a sieve device.
  • a sieve segment 10 is aligned, for example, at an angle to the horizontal of about 5-20 °, so that the material to be classified which is placed on the sieve segment 10 is moved along the surface of the sieve segment 10 and thus an efficient classification is achieved over the entire surface of the sieve device.
  • the direction of movement of the material to be classified is exemplified in Fig. 1 marked with an arrow.
  • the direction of movement of the material to run orthogonally thereto, this being dependent on the position of the victory segment 10 in a screening device.
  • the sieve device When the sieve device is in operation, it is driven by a drive (not shown), for example a vibration exciter, in such a way that the sieve segments 10 are moved in an oscillating manner, so that the material placed on the sieve device is optimally classified.
  • the screening device has at least one feed area and at least one discharge area and the wear protection units are attached to the screen segment or a plurality of screen segments in the feed area.
  • the wear protection units 24 enable effective wear protection of the base plate 12, in particular in the feed area of the screening device in which the material to be classified hits the surface of the screening device. As a result of the screw connections, the wear protection units can be easily dismantled from the base plate 12 and replaced in the event of wear.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Combined Means For Separation Of Solids (AREA)

Description

Die Erfindung betrifft ein Siebsegment, sowie eine Siebeinrichtung mit einer Verschleißschutzeinheit. Des Weiteren betrifft die Erfindung ein Verfahren zum Herstellen eines Siebsegments.The invention relates to a sieve segment and a sieve device with a wear protection unit. The invention also relates to a method for producing a screen segment.

Zur Aufbereitung von Rohmaterialien, insbesondere von mineralischen Brechgütern, wie beispielsweise Ölsand, Kohle und Erze, wie Eisenerz und Nickelerz werden Siebeinrichtungen mit einer Vielzahl von Siebsegmenten eingesetzt, die mittels Vibration das zu zerkleinernde oder bereits zerkleinerte Material in zumindest zwei Kornfraktionen klassieren. Eine solche Siebeinrichtung ist beispielsweise in der DE102007034512B3 beschrieben.For the processing of raw materials, especially mineral crushed goods, such as oil sand, coal and ores such as iron ore and nickel ore, sieve devices with a large number of sieve segments are used, which classify the material to be shredded or already shredded into at least two grain fractions by means of vibration. Such a screening device is for example in the DE102007034512B3 described.

Bei dem zu klassierenden Materialien handelt es sich häufig um Materialien mit einer hohen Härte, die stark abrasiv sind. Dabei tritt an der Oberfläche der Siebsegmente starker Verschleiß auf, was sehr kurze Wartungsintervalle und hohe Aufbereitungskosten der Siebsegmente bedingt.The materials to be classified are often materials with a high hardness that are highly abrasive. There is heavy wear on the surface of the sieve segments, which results in very short maintenance intervals and high reprocessing costs for the sieve segments.

Aus der WO 2017009288 A1 ist bereits ein Sieb mit einer Mehrzahl von plattenförmigen Verschleißschutzelemente bekannt, die die Oberfläche des Siebs bilden. Des Weiteren ist eine Siebeinrichtung aus der US 2013092608 A1 bekannt, wobei diese einen Verschleißschutz aus einem Baustahl-Verbundwerkstoff aufweist. US 2013092608 A1 offenbart eine Siebeinrichtung enstsprechend dem Oberbegriff des Anspruchs 1.From the WO 2017009288 A1 a sieve is already known with a plurality of plate-shaped wear protection elements which form the surface of the sieve. Furthermore, a sieve device from the US 2013092608 A1 known, this having a wear protection made of a structural steel composite material. US 2013092608 A1 discloses a screening device according to the preamble of claim 1.

Auch die DE 195 28 512 A1 offenbart ein Verschleißteil für einen Schlagkörper zum Anbringen in einem Hammerbrecher oder Prallbrecher mit einer Einlage aus Metallkarbiden.Also the DE 195 28 512 A1 discloses a wear part for an impact body for mounting in a hammer crusher or impact crusher with a metal carbide insert.

Diese Verschleißschutzelemente sind extrem verschleißfest, reagieren aber gleichzeitig auch relativ spröde bei eventuellen schlagenden Belastungen. Solche schlagenden Belastungen treten häufig an dem Aufgabebereich der Siebeinrichtung auf, an dem das zu klassierende Material auf die Siebeinrichtung aufgegeben wird. Dies führt häufig zu sehr hohem Verschleiß und Beschädigungen des gesamten Siebes, was auch einen Ausfall der gesamten Siebanlage zur Folge haben kann.These wear protection elements are extremely wear-resistant, but at the same time also react relatively brittle to possible impact loads. Such impact loads often occur in the feeding area of the screening device where the material to be classified is fed onto the screening device. This often leads to very high wear and tear and damage to the entire sieve, which can also result in failure of the entire sieving system.

Davon ausgehend ist es Aufgabe der vorliegenden Erfindung, ein Siebsegment einer Siebeinrichtung bereitzustellen, das eine hohe Verschleißfestigkeit bei einem Einsatz zur Klassierung von hochabrasiven Materialien aufweist und gleichzeitig im Betrieb der Siebeinrichtung durch die Schlagbelastung des zu klassierenden Materials nicht bruchgefährdet bzw. lösbar ist.Based on this, it is the object of the present invention to provide a screen segment of a screening device which has high wear resistance when used for classifying highly abrasive materials and at the same time during operation of the Sieve device is not at risk of breakage or detachable due to the impact load of the material to be classified.

Diese Aufgabe wird erfindungsgemäß durch ein Siebsegment mit den Merkmalen des unabhängigen Vorrichtungsanspruchs 1 und durch ein Verfahren zum Herstellen eines Siebsegments mit den Merkmalen des unabhängigen Verfahrensanspruchs 12 gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den abhängigen Ansprüchen.According to the invention, this object is achieved by a sieve segment with the features of independent device claim 1 and by a method for producing a sieve segment with the features of independent method claim 12. Advantageous developments result from the dependent claims.

Ein Siebsegment einer Siebeinrichtung zum Trennen oder Klassieren von Aufgabegut, insbesondere mineralische Brechgüter wie Ölsand, in zumindest zwei Kornfraktionen, umfasst nach einem ersten Aspekt eine im Wesentlichen siebförmige Grundplatte mit einer Mehrzahl von Siebdurchlässen, wobei auf der Grundplatte zumindest eine Verschleißschutzeinheit angebracht ist. Die Verschleißschutzeinheit ist aus einem Metallmatrix-Verbundwerkstoff ausgebildet, der eine Verschleißschutzeinlage aus einem Hartmetall und/ oder aus Keramik aufweist. Der Metallmatrix-Verbundwerkstoff weist ein Metallmatrixmaterial auf, wobei die Verschleißschutzeinlage zumindest teilweise in das Metallmatrixmaterial der Verschleißschutzeinheit eingegossen ist.A sieve segment of a sieve device for separating or classifying feed material, in particular crushed mineral materials such as oil sands, into at least two grain fractions, comprises, according to a first aspect, an essentially sieve-shaped base plate with a plurality of sieve passages, with at least one wear protection unit being attached to the base plate. The wear protection unit is formed from a metal matrix composite material which has a wear protection insert made from a hard metal and / or from ceramic. The metal matrix composite material has a metal matrix material, the wear protection insert being at least partially cast into the metal matrix material of the wear protection unit.

Unter einen Metallmatrix-Verbundwerkstoff ist ein Werkstoff aus einem Metallmatrixmaterial wie beispielsweise Stahl zu verstehen, in den die Verschleißschutzeinlage aus einem Hartmetall und/ oder aus Keramik eingegossen ist.A metal matrix composite material is to be understood as a material made of a metal matrix material such as steel, into which the wear protection insert made of a hard metal and / or ceramic is cast.

Ein Siebsegment bildet zumindest einen Teil einer Siebeinrichtung, insbesondere die Siebfläche einer Siebeinrichtung. Vorzugsweise werden mehrere Siebsegmente nebeneinander zu einer Siebfläche angeordnet. Es ist auch denkbar, dass eine Siebeinrichtung lediglich ein Siebsegment aufweist, das die Siebfläche ausbildet.A sieve segment forms at least part of a sieve device, in particular the sieve surface of a sieve device. A plurality of sieve segments are preferably arranged next to one another to form a sieve surface. It is also conceivable that a sieve device has only one sieve segment which forms the sieve surface.

Bei dem zu klassierenden Material handelt es sich beispielsweise um mineralische Brechgüter, wie beispielsweise Ölsand, Kohle und Erze, wie Eisenerz und Nickelerz oder auch Zementklinker.The material to be classified is, for example, mineral crushed goods such as oil sand, coal and ores such as iron ore and nickel ore or cement clinker.

Die Grundplatte bildet vorzugweise den unteren, dem zu klassierenden Material abgewandten Bereich des Siebsegments aus und ist insbesondere plattenförmig mit einer Mehrzahl von Siebdurchlässen ausgebildet. Die Siebdurchlässe des Siebsegments dienen dem Klassieren des Materials, wobei Material mit einer Größe unterhalb einer bestimmten Korngröße durch die Siebdurchlässe fällt und das Material oberhalb der bestimmten Korngröße seitlich von der Oberfläche der Siebeinrichtung fällt. Die Siebdurchlässe sind beispielsweise rund oder rechteckig ausgebildet und in Reihen zueinander angeordnet, sodass eine möglichst große Zahl von Siebdurchlässen nebeneinander angeordnet ist. Beispielsweise sind die Siebdurchlässe gleichmäßig zueinander beabstandet und weisen gleiche oder unterschiedliche Größen auf. Die Verschleißschutzeinheit bildet insbesondere zumindest einen Teil der Oberfläche des Siebsegments aus. Die Verschleißschutzeinheit dient dem Verschleißschutz der Oberfläche der Grundplatte der Siebsegmente. Insbesondere wird ein direkter Aufprall des zu klassierenden Materials auf die Oberfläche der Grundplatte verhindert, wobei das zu klassierende Material zunächst auf die Verschleißschutzeinheit fällt und dann zu der Grundplatte gelangt.The base plate preferably forms the lower region of the sieve segment facing away from the material to be classified and is in particular designed in the form of a plate with a plurality of sieve passages. The sieve passages of the sieve segment are used to classify the material, whereby material with a size below a certain grain size falls through the sieve passages and the material above the certain grain size falls to the side of the Surface of the sieve device falls. The screen passages are, for example, round or rectangular and are arranged in rows with respect to one another, so that the largest possible number of screen passages is arranged next to one another. For example, the screen passages are evenly spaced from one another and have the same or different sizes. In particular, the wear protection unit forms at least part of the surface of the screen segment. The wear protection unit serves to protect the surface of the base plate of the sieve segments against wear. In particular, a direct impact of the material to be classified on the surface of the base plate is prevented, the material to be classified first falling onto the wear protection unit and then reaching the base plate.

Die Verschleißschutzeinheit ist vorzugsweise einstückig aus dem Metallmatrix-Verbundwerkstoff ausgebildet. Unter einen Metallmatrix-Verbundwerkstoff ist ein Werkstoff aus einem Metallmatrixmaterial wie beispielsweise Stahl zu verstehen, in den eine Einlage aus einem Hartmetall und/ oder aus Keramik eingegossen ist. Ein Metallmatrix-Verbundwerkstoff mit einer Verschleißschutzeinlage aus einem Hartmetall oder aus Keramik bietet den Vorteil einer hohen Verschleißfestigkeit der Verschleißschutzeinheit. Die Verschleißschutzeinlage ist vorzugsweise aus einem pulverförmigen und/ oder körnigem Gemisch aus Partikel (Körnern) umfassend Keramik, Aluminium und/oder Carbide wie Borcarbid, Wolframcarbid, Siliciumcarbid hergestellt, wobei das Gemisch beispielsweise mit einem Bindemittel gemischt, erhitzt, insbesondere begast, und gebacken, wird. Insbesondere wird das Gemisch in einer beispielsweise flexible Form erhitzt, die der Negativform der Verschleißschutzeinlage entspricht. Anschließend kühlt das Gemisch ab und härtet zu einem sehr verschleißbeständigen Körper mit einer porösen Struktur aus.The wear protection unit is preferably formed in one piece from the metal matrix composite material. A metal matrix composite material is to be understood as meaning a material made of a metal matrix material such as steel, for example, into which an insert made of a hard metal and / or ceramic is cast. A metal matrix composite material with a wear protection insert made of a hard metal or ceramic offers the advantage of a high wear resistance of the wear protection unit. The wear protection insert is preferably made from a powdery and / or granular mixture of particles (grains) comprising ceramic, aluminum and / or carbides such as boron carbide, tungsten carbide, silicon carbide, the mixture being mixed, heated, in particular gassed, and baked, for example, with a binder, will. In particular, the mixture is heated in a, for example, flexible form which corresponds to the negative form of the wear protection insert. The mixture then cools down and hardens to form a very wear-resistant body with a porous structure.

Gemäß einer ersten Ausführungsform ist die Verschleißschutzeinlage an der Oberfläche der Verschleißschutzeinheit angeordnet. Vorzugsweise bildet die Verschleißschutzeinlage die Oberfläche der Verschleißschutzeinheit aus. Die Oberfläche der Verschleißschutzeinheit weist in Richtung des zu klassierenden Materials und bildet die Fläche, auf die im Betrieb der Siebeinrichtung das zu klassierenden Material zuerst auftrifft. Die Unterseite der Verschleißschutzeinheit ist vorzugsweise aus einem duktileren Material, wie Stahl, ausgebildet. Die Verschleißeinlage aus Hartmetall oder Keramik bietet einen besonders hohen Verschleißschutz, wobei die Ausbildung lediglich eines Teils der Verschleißschutzeinheit aus dem kostenintensiveren Material eine Möglichkeit der Reduzierung der Gesamtkosten der Verschleißschutzeinheit bietet. Vorzugsweise erstreckt sich die Verschleißschutzeinlage über die gesamte Oberfläche der Verschleißschutzeinheit.According to a first embodiment, the wear protection insert is arranged on the surface of the wear protection unit. The wear protection insert preferably forms the surface of the wear protection unit. The surface of the wear protection unit points in the direction of the material to be classified and forms the surface on which the material to be classified first hits during operation of the screening device. The underside of the wear protection unit is preferably made of a more ductile material such as steel. The wear insert made of hard metal or ceramic offers a particularly high level of wear protection, the formation of only a part of the wear protection unit from the more expensive material offering a possibility of reducing the overall costs of the wear protection unit. The wear protection insert preferably extends over the entire surface of the wear protection unit.

Die Verschleißschutzeinheit ist gemäß einer weiteren Ausführungsform durch ein Gießverfahren hergestellt. Beispielsweise ist die Verschleißschutzeinheit vollständig gegossen, mit Ausnahme der Verschleißeinlage. Das Herstellen der Verschleißschutzeinheit durch gießen bietet eine sehr einfache und kostengünstige Herstellungsmethode, wobei auch komplexe Formen einfach hergestellt werden können.According to a further embodiment, the wear protection unit is produced by a casting process. For example, the wear protection unit is completely cast, with the exception of the wear insert. The production of the wear protection unit by casting offers a very simple and inexpensive production method, and complex shapes can also be produced in a simple manner.

Die Verschleißschutzeinheit weist gemäß einer weiteren Ausführungsform ein Verschleißschutzelement auf, das an einer nach außen weisenden Seitenfläche der Verschleißschutzeinheit angebracht ist. Das Verschleißschutzelement ist vorzugsweise aus einem gesinterten Hartmetall wie beispielsweise Wolframcarbid, Titancarbid, Borcarbid, Niobcarbid, Chromcarbid oder Keramik oder aus einer Mischung aus diesen Werkstoffen ausgebildet. Beispielsweise weist die Verschleißschutzeinheit eine Aussparung auf, in der die Verschleißschutzeinheit angebracht ist. Das Verschleißschutzelement sorgt für einen zusätzlichen Verschleißschutz an den nach außen weisenden Seitenflächen der Verschleißschutzeinheit.According to a further embodiment, the wear protection unit has a wear protection element which is attached to an outwardly facing side surface of the wear protection unit. The wear protection element is preferably made from a sintered hard metal such as tungsten carbide, titanium carbide, boron carbide, niobium carbide, chromium carbide or ceramic or from a mixture of these materials. For example, the wear protection unit has a recess in which the wear protection unit is attached. The wear protection element provides additional wear protection on the outwardly facing side surfaces of the wear protection unit.

Gemäß einer weiteren Ausführungsform ist das Verschleißschutzelement mit der Verschleißschutzeinheit stoffschlüssig verbunden, insbesondere verschweißt, gesintert, geklebt oder verlötet. Die Verschleißschutzeinlage ist gemäß einer weiteren Ausführungsform aus Hartmetall, wie beispielsweise Wolframcarbid, Titancarbid, Borcarbid, Niobcarbid, Chromcarbid oder Keramik oder aus einer Mischung aus diesen Werkstoffen ausgebildet.According to a further embodiment, the wear protection element is materially connected to the wear protection unit, in particular welded, sintered, glued or soldered. According to a further embodiment, the wear protection insert is formed from hard metal, such as, for example, tungsten carbide, titanium carbide, boron carbide, niobium carbide, chromium carbide or ceramic, or from a mixture of these materials.

Die Verschleißschutzeinlage ist gemäß einer weiteren Ausführungsform zumindest teilweise in die Verschleißschutzeinheit eingegossen. Vorzugsweise weist die Verschleißschutzeinheit eine Mehrzahl von Verschleißschutzeinlagen auf, die zumindest teilweise in die Verschleißschutzeinheit eingegossen sind. Durch das relativ einfache Herstellungsverfahren des Gießens des Verschleißschutzeinheit ist es möglich, eine Mehrzahl von Verschleißeilagen derart anzuordnen, dass die Bereiche der Verschleißschutzeinheit, die einem hohen Verschleiß ausgesetzt sind, eine Verschleißschutzeinlage aufweisen. Beispielsweise umfasst die Mehrzahl von Verschleißschutzeinlagen eine Mehrzahl von Partikeln, insbesondere Hartmetall- oder Keramikpartikel oder Diamanten. Vorzugsweise besteht jede Verschleißschutzeinlage aus genau einem Partikel, wobei die Verschleißschutzeinlagen ungeordnet in dem Metallmatrixmaterial angeordnet sind. Beispielsweise ist die Verschleißschutzeinlage derart ausgebildet, dass das Metallmatrixmaterial in die Verschleißschutzeinlage infiltriert und somit eine stoffschlüssige Verbindung hergestellt wird.According to a further embodiment, the wear protection insert is at least partially cast into the wear protection unit. The wear protection unit preferably has a plurality of wear protection inserts which are at least partially cast into the wear protection unit. The relatively simple manufacturing method of casting the wear protection unit makes it possible to arrange a plurality of wear inserts in such a way that the areas of the wear protection unit that are exposed to high wear have a wear protection insert. For example, the plurality of wear protection inserts comprises a plurality of particles, in particular hard metal or ceramic particles or diamonds. Each wear protection insert preferably consists of exactly one particle, the wear protection inserts being arranged in a disordered manner in the metal matrix material. For example, the wear protection insert is designed in such a way that the metal matrix material infiltrates into the wear protection insert and thus an integral connection is established.

Die Verschleißschutzeinlage weist gemäß einer weiteren Ausführungsform eine Dicke von etwa 5mm bis 50mm, vorzugsweise 10mm bis 15mm, auf. Vorzugsweise weist die Verschleißschutzeinheit zumindest einen Steg oder mehrere Stege auf, die sich entlang der Grundplatte erstecken. Die Grundplatte weist ferner beispielsweise an ihren Längsseiten jeweils einen Befestigungsbereich und zwischen den Befestigungsbereichen einen Klassierungsbereich mit einer Mehrzahl von Siebdurchlässen auf. Der Befestigungsbereich dient der Befestigung der Grundplatte an beispielsweise einem Träger der Siebeinrichtung. Die Verschleißschutzeinheit erstreckt sich vorzugsweise von einem Befestigungsbereich über den Klassierungsbereich zu dem gegenüberliegenden Befestigungsbereich. Insbesondere ist die Verschleißschutzeinheit zumindest teilweise zu der Grundplatte beabstandet und weist vorzugsweise Vorsprünge auf, die auf der Grundplatte aufliegen und Aussparungen, die zu der Grundplatte beabstandet sind. Dies ermöglicht beispielsweise das Anbringen eines zusätzlichen Verschleißschutzes auf die Grundplatte.According to a further embodiment, the wear protection insert has a thickness of approximately 5 mm to 50 mm, preferably 10 mm to 15 mm. The wear protection unit preferably has at least one web or several webs which extend along the base plate. The base plate also has, for example, a fastening area on each of its longitudinal sides and a classification area with a plurality of sieve passages between the fastening areas. The fastening area is used to fasten the base plate to, for example, a carrier of the screening device. The wear protection unit preferably extends from one fastening area over the classification area to the opposite fastening area. In particular, the wear protection unit is at least partially spaced apart from the base plate and preferably has projections that rest on the base plate and recesses that are spaced apart from the base plate. This enables, for example, additional wear protection to be attached to the base plate.

Gemäß einer weiteren Ausführungsform weist die Verschleißschutzeinlage eine poröse Struktur auf, wobei die Verschleißschutzeinlage vorzugweise eine Mehrzahl von Poren aufweist, die beispielsweise gleichmäßig verteilt und/oder ausgebildet sind. Beispielsweise sind die Poren wabenförmig ausgebildet. Dies bietet den Vorteil, dass das Metallmatrixmaterial, aus dem die Verschleißschutzeinheit gegossen wird, in die Verschleißeinlage infiltriert und eine besonders feste Verbindung zwischen der Verschleißschutzeinlage aus Hartmetall und/oder Keramik und dem Metallmatrixmaterial hergestellt wird. Die Verschleißschutzeinlage ist vorzugsweise einstückig und beispielsweise plattenförmig ausgebildet.According to a further embodiment, the wear protection insert has a porous structure, the wear protection insert preferably having a plurality of pores which, for example, are evenly distributed and / or formed. For example, the pores are honeycombed. This offers the advantage that the metal matrix material from which the wear protection unit is cast infiltrates into the wear insert and a particularly strong connection is established between the wear protection insert made of hard metal and / or ceramic and the metal matrix material. The wear protection insert is preferably designed in one piece and, for example, in the form of a plate.

Gemäß einer weiteren Ausführungsform weist die Verschleißschutzeinheit zumindest einen Steg und zwei mit jeweils einem Ende des Stegs verbundene Flanschbereiche auf, wobei der Flanschbereich der Verschleißschutzeinheit mit der Grundplatte verbunden ist. Beispielsweise ist der Flanschbereich mit der Grundplatte stoffschlüssig, formschlüssig oder kraftschlüssig verbunden, insbesondere verschraubt. Die Verschleißschutzeinheit weist, vorzugsweise genau zwei Stege auf. Beispielsweise weist die Verschleißschutzeinheit mehr als zwei Stege, insbesondere drei, vier oder fünf Stege auf. Die Stege erstrecken sich vorzugsweise orthogonal zu der Bewegungsrichtung des zu klassierenden Materials und verlaufen entlang der Grundplatte. Die Stege weisen beispielsweise einen Abstand zueinander auf, der in etwa dem Durchmesser der Siebdurchlässe entspricht oder größer als der Durchmesser der Siebdurchlässe ist.According to a further embodiment, the wear protection unit has at least one web and two flange areas each connected to one end of the web, the flange area of the wear protection unit being connected to the base plate. For example, the flange area is materially, positively or non-positively connected to the base plate, in particular screwed. The wear protection unit preferably has exactly two webs. For example, the wear protection unit has more than two webs, in particular three, four or five webs. The webs preferably extend orthogonally to the direction of movement of the material to be classified and run along the base plate. The webs are, for example, at a distance from one another which corresponds approximately to the diameter of the sieve passages or is greater than the diameter of the sieve passages.

Die Erfindung umfasst des Weiteren eine Siebeinrichtung mit zumindest einem Siebsegment wie voran beschrieben, zumindest einem Schwingungserreger, der mit dem zumindest einen Siebsegment in Verbindung steht, um dieses schwingend zu bewegen. Die Siebeinrichtung weist insbesondere einen Aufgabebereich, auf den dazu klassierende Material aufgegeben wird, und einen Abwurfbereich auf, von dem das klassierte Material, die Siebeinrichtung verlässt. Die Verschleißschutzeinheiten sind vorzugsweise lediglich an dem Aufgabebereich angebracht, sodass das auf die Siebeinrichtung aufgegebene Material zuerst auf die Verschleißschutzeinheit auftrifft. Vorzugsweise weist die Siebeinrichtung eine Mehrzahl von Siebsegmenten mit Siebdurchlässen auf, wobei die Größe der Siebdurchlässe der Siebsegmente und der Abstand der Verschleißschutzeinheiten zueinander, insbesondere der Stege der Verschleißschutzeinheiten zueinander, über die Länge der Siebeinrichtung wenigstens teilweise unterschiedlich ist.The invention further comprises a sieve device with at least one sieve segment as described above, at least one vibration exciter which is connected to the at least one sieve segment in order to move the latter in an oscillating manner. The screening device has, in particular, a feed area onto which the material to be classified is fed, and a discharge area from which the classified material leaves the screening device. The wear protection units are preferably only attached to the feed area, so that the material fed onto the screening device hits the wear protection unit first. The sieve device preferably has a plurality of sieve segments with sieve passages, the size of the sieve passages of the sieve segments and the distance between the wear protection units, in particular the webs of the wear protection units from one another, being at least partially different over the length of the sieve device.

Die Erfindung umfasst auch ein Verfahren zum Herstellen eines Siebsegments einer Siebeinrichtung zum Trennen oder Klassieren von Aufgabegut, insbesondere mineralische Brechgüter wie Ölsand, in zumindest zwei Kornfraktionen, wobei das Siebsegment eine im Wesentlichen siebförmige Grundplatte mit einer Mehrzahl von Siebdurchlässen umfasst, und das Verfahren die Schritte aufweist:

  • Positionieren einer Verschleißschutzeinlage aus einem Hartmetall und/oder Keramik in einer Gussform zum Gießen einer Verschleißschutzeinheit,
  • Gießen der Verschleißschutzeinheit mit einem Metallmatrixmaterial, sodass die Verschleißschutzeinlage zumindest teilweise von dem Metallmatrixmaterial der Verschleißschutzeinheit umschlossen und in das Metallmatrixmaterial der Verschleißschutzeinheit eingegossen wird und
  • Anbringen der Verschleißschutzeinlage an der Grundplatte.
The invention also comprises a method for producing a sieve segment of a sieve device for separating or classifying feed material, in particular mineral crushed material such as oil sands, into at least two grain fractions, wherein the sieve segment comprises a substantially sieve-shaped base plate with a plurality of sieve passages, and the method comprises the steps having:
  • Positioning a wear protection insert made of a hard metal and / or ceramic in a casting mold for casting a wear protection unit,
  • Pouring the wear protection unit with a metal matrix material, so that the wear protection insert is at least partially enclosed by the metal matrix material of the wear protection unit and is poured into the metal matrix material of the wear protection unit and
  • Attaching the wear protection insert to the base plate.

Die mit Bezug auf das Siebsegment beschriebenen Vorteile und Erläuterungen treffen in verfahrensmäßiger Entsprechung auch auf das Verfahren zum Herstellen eines Siebsegments zu.The advantages and explanations described with reference to the sieve segment also apply to the method for producing a sieve segment.

Gemäß einer Ausführungsform wird ein Verschleißschutzelement aus einem Hartmetall und/oder Keramik an der gegossenen Verschleißschutzeinheit angebracht. Das Verschleißschutzelement wird vorzugsweise stoffschlüssig mit der Verschleißschutzeinheit verbunden.According to one embodiment, a wear protection element made of a hard metal and / or ceramic is attached to the cast wear protection unit. The wear protection element is preferably materially connected to the wear protection unit.

Beschreibung der ZeichnungenDescription of the drawings

Die Erfindung ist nachfolgend anhand mehrerer Ausführungsbeispiele mit Bezug auf die beiliegenden Figuren näher erläutert.

Fig. 1
zeigt eine schematische Darstellung eines Ausschnitts eines Siebsegments mit einer Verschleißschutzeinheit in einer Draufsicht gemäß einem Ausführungsbeispiel.
Fig. 2
zeigt eine schematische Darstellung eines Siebsegments mit einer Verschleißschutzeinheit in Schnittansicht gemäß dem Ausführungsbeispiel der Fig. 1.
Fig. 3
zeigt eine schematische Darstellung eines Ausschnitts eines Siebsegments mit einer Verschleißschutzeinheit in Schnittansicht gemäß einem Ausführungsbeispiel.
The invention is explained in more detail below on the basis of several exemplary embodiments with reference to the accompanying figures.
Fig. 1
shows a schematic representation of a section of a screen segment with a wear protection unit in a top view according to an embodiment.
Fig. 2
FIG. 11 shows a schematic representation of a screen segment with a wear protection unit in a sectional view according to the exemplary embodiment of FIG Fig. 1 .
Fig. 3
shows a schematic representation of a section of a screen segment with a wear protection unit in a sectional view according to an embodiment.

In Fig. 1 und 2 ist ein Siebsegment 10 zum Klassieren von grobkörnigem Material, insbesondere mineralisches Material aus einem Tagebau, mineralische Brechgüter, wie beispielsweise Ölsand, Kohle und Erze, wie Eisenerz und Nickelerz oder auch Zementklinker, in zumindest zwei Korngrößen dargestellt. Das Siebsegment 10 weist eine Grundplatte 12 mit einer Mehrzahl von Siebdurchlässen 14 auf, die sich durch die Grundplatte 12 hindurch erstrecken. Die Siebdurchlässe 14 sind vorzugsweise gleichmäßig zueinander beabstandet und in Reihen nebeneinander angeordnet. Beispielhaft sind die Siebdurchlässe 14 quadratisch ausgebildet, wobei ebenso davon abweichende Formen wie beispielsweise kreisförmig, rechteckig oder vieleckig denkbar sind. Die Grundplatte 12 ist auf der Unterseite, insbesondere auf der zu dem klassierenden Material abgewandten Seite des Siebsegments 10 angeordnet und beispielsweise aus Stahl, insbesondere einem hochtemperaturfesten Stahl, ausgebildet. Beispielhaft weist die Grundplatte 12 einen rechteckigen Querschnitt auf.In Fig. 1 and 2 is a sieve segment 10 for classifying coarse-grained material, in particular mineral material from an open pit, mineral crushed goods such as oil sands, coal and ores such as iron ore and nickel ore or cement clinker, shown in at least two grain sizes. The sieve segment 10 has a base plate 12 with a plurality of sieve passages 14 which extend through the base plate 12. The sieve passages 14 are preferably evenly spaced from one another and arranged in rows next to one another. By way of example, the sieve passages 14 are square, with shapes deviating therefrom, such as circular, rectangular or polygonal, also being conceivable. The base plate 12 is arranged on the underside, in particular on the side of the sieve segment 10 facing away from the material to be classified, and is formed, for example, from steel, in particular a high-temperature-resistant steel. By way of example, the base plate 12 has a rectangular cross section.

Unter der Oberseite des Siebsegments 10 wird die Seite verstanden, die mit dem zu klassierenden Material zuerst in Berührung kommt, wenn dieses auf das Siebsegment aufgegeben wird. Die Unterseite ist die von dem Material abgewandte, gegenüberliegende Seite.The upper side of the sieve segment 10 is understood to mean the side which first comes into contact with the material to be classified when this is placed on the sieve segment. The underside is the opposite side facing away from the material.

Die Grundplatte 12 ist siebförmig ausgebildet und weist beispielhaft eine Mehrzahl von parallelen, gleichmäßig zueinander beabstandeten Stäben auf, die in Längsrichtung, insbesondere in Bewegungsrichtung des zu klassierenden Materials, ausgerichtet sind. Orthogonal dazu weist die Grundplatte 12 eine Mehrzahl von parallelen, gleichmäßig zueinander beabstandete, Stäben auf, die die Längsrichtung verlaufende Stäbe kreuzen und die Siebdurchlässe 14 ausbilden. Die orthogonalen Stäbe der Grundplatte 12 sind in der Ansicht der Fig. 1 nicht sichtbar.The base plate 12 is designed in the form of a sieve and has, for example, a plurality of parallel, uniformly spaced rods which are aligned in the longitudinal direction, in particular in the direction of movement of the material to be classified. Orthogonally to this, the base plate 12 has a plurality of parallel, uniform ones to one another spaced rods which cross the longitudinal rods and form the sieve passages 14. The orthogonal bars of the base plate 12 are in the view of Fig. 1 not visible.

Die Grundplatte 12 weist an ihren in Längsrichtung verlaufenden Seiten jeweils einen Befestigungsbereich 16 auf, der eine im Wesentlichen ebene Oberfläche und keine Siebdurchlässe 14 aufweist. Die Befestigungsbereiche 16 weisen jeweils eine Mehrzahl von Befestigungslöchern 18 auf, mittels welcher das Siebsegment 10 beispielsweise über Schrauben an einem Träger 20 befestigt ist. Zwischen zwei Befestigungsbereichen 16 einer Grundplatte 12 ist ein Klassierungsbereich 26 ausgebildet, der die Mehrzahl von Siebdurchlässen 14 aufweist.The base plate 12 has a fastening area 16 on each of its sides running in the longitudinal direction, which has an essentially flat surface and no sieve openings 14. The fastening areas 16 each have a plurality of fastening holes 18, by means of which the sieve segment 10 is fastened to a carrier 20, for example by means of screws. A classification area 26, which has the plurality of sieve passages 14, is formed between two fastening areas 16 of a base plate 12.

Das Siebsegment 10 weist des Weiteren eine Mehrzahl von Verschleißschutzeinheiten 24 auf, die an der Grundplatte 12 angebracht sind. Die Verschleißschutzeinheiten 24 sind jeweils an dem Befestigungsbereich 16 der Grundplatte 12 angebracht und erstrecken sich von einem Befestigungsbereich 16 über den Klassierungsbereich 26 zu dem gegenüberliegenden Befestigungsbereich 16. Eine Verschleißschutzeinheit 24 des Ausführungsbeispiels der Fig. 1 und 2 weist zwei parallele Stege 28 auf, die sich beispielhaft quer zur Bewegungsrichtung des zu klassierenden Materials erstrecken. Es ist ebenfalls denkbar, dass sich die Stege entlang der Stäbe der Grundplatte 12 in Bewegungsrichtung des zu klassierenden Materials erstrecken. Die Stege 28 sind miteinander an ihren Enden über einen Flanschbereich 30 verbunden, der in etwa orthogonal zu den Stegen 28 verläuft. Die Flanschbereiche 30 der Verschleißschutzeinheiten 24 sind mit der Grundplatte 12 über Schrauben 22 verschraubt. Es ist ebenfalls denkbar, die Verschleißschutzeinheiten 24 mittels einer stoffschlüssigen Verbindung wie Schweißen oder Kleben an der Grundplatte 12 zu befestigen. In dem Ausführungsbeispiel der Fig. 1 und 2 ist die Verschleißschutzeinheit 24 lediglich über die Flanschbereiche 30 an der Grundplatte 24 befestigt. Es ist ebenfalls möglich, die Verschleißschutzeinheiten 24 an weiteren Bereichen an der Grundplatte 12 zu befestigen, insbesondere an den quer zu den Stegen 28 der Verschleißschutzeinheiten 24 verlaufenden Stäben der Grundplatte 12. Die Verschleißschutzeinheit 24 weist an der Unterseite der Stege Vorsprünge 32 auf, die auf der Grundplatte 12 aufliegen. Die Vorsprünge liegen beispielhaft auf den quer zu den Stegen 28 der Verschleißschutzeinheit 24 verlaufenden Stäben der Grundplatte 12 auf, sodass die Verschleißschutzeinheit 24 zu den parallel zu den Stegen 28 der Verschleißschutzeinheit 24 verlaufenden Stäben der Grundplatte 12 beabstandet ist. Die Verschleißschutzeinheit 24 kann beispielsweise auch über die gesamte Länge auf der Oberseite der Grundplatte 12 aufliegen oder befestigt sein.The sieve segment 10 furthermore has a plurality of wear protection units 24 which are attached to the base plate 12. The wear protection units 24 are each attached to the fastening area 16 of the base plate 12 and extend from one fastening area 16 via the classification area 26 to the opposite fastening area 16. A wear protection unit 24 of the exemplary embodiment in FIG Fig. 1 and 2 has two parallel webs 28 which, for example, extend transversely to the direction of movement of the material to be classified. It is also conceivable that the webs extend along the bars of the base plate 12 in the direction of movement of the material to be classified. The webs 28 are connected to one another at their ends via a flange region 30 which runs approximately orthogonally to the webs 28. The flange areas 30 of the wear protection units 24 are screwed to the base plate 12 by means of screws 22. It is also conceivable to fasten the wear protection units 24 to the base plate 12 by means of a material connection such as welding or gluing. In the embodiment of Fig. 1 and 2 the wear protection unit 24 is fastened to the base plate 24 only via the flange regions 30. It is also possible to fasten the wear protection units 24 in further areas on the base plate 12, in particular on the bars of the base plate 12 that run transversely to the webs 28 of the wear protection units 24. The wear protection unit 24 has projections 32 on the underside of the webs the base plate 12 rest. The projections rest, for example, on the bars of the base plate 12 running transversely to the webs 28 of the wear protection unit 24, so that the wear protection unit 24 is spaced apart from the bars of the base plate 12 running parallel to the webs 28 of the wear protection unit 24. The wear protection unit 24 can, for example, also rest or be fastened over the entire length on the upper side of the base plate 12.

Fig. 3 zeigt eine Detaildarstellung der Verschleißschutzeinheit 24, wobei der Bereich der Verschleißschutzeinheit 24, der mit der Grundplatte 12 verschraubt ist, in einem Querschnitt dargestellt ist. Die Verschleißschutzeinheit 24 ist aus einem Metallmatrix-Verbundwerkstoff ausgebildet, der eine Verschleißschutzeinlage 34 aus einem Hartmetall oder Keramik aufweist. Die Verschleißschutzeinlage 34 ist an der Oberseite der Verschleißschutzeinheit 24 angeordnet und bildet beispielhaft die gesamte Oberfläche der Verschleißschutzeinheit 24 aus. Die Verschleißschutzeinlage 34 kann beispielsweise auch nur einen Teil der Oberfläche der Verschleißschutzeinheit 24 ausbilden. Die Verschleißschutzeinlage 34 umfasst beispielsweise Wolframcarbid, Keramik, Titancarbid, Borcarbid oder Chromcarbid und weist eine poröse oder wabenförmige Struktur auf. Die Verschleißschutzeinlage 34 ist einstückig ausgebildet und weist beispielsweise eine Dicke von 5mm bis 50mm, vorzugsweise 10mm bis 15mm auf. Die Verschleißschutzeinheit 24 ist aus dem Metallmatrixmaterial ausgebildet, wobei die Verschleißschutzeinlage 34 zumindest teilweise von dem Metallmatrixmaterial umschlossen, insbesondere in dieses eingegossen ist. Bei dem Metallmatrixmaterial handelt es sich beispielsweise um hochtemperaturfesten Stahl und/oder einen Stahl mit einer Härte von etwa 150 - 400 HB (Brinell). Unter einem hochtemperaturfesten Stahl ist ein warmfester Stahl mit einem hohen Chrom-Nickel-Anteil zu verstehen, der eine Temperaturbeständigkeit von bis zu 650°C, insbesondere bis zu 1000°C aufweist. Bei solchen Stählen handelt es sich beispielsweise um austenitische Chrom-Nickel-Stähle, wie beispielsweise GX25CrNiSi18-9, GX40CrNiSi25-12, GX40NiCrSiNb35-26. Hochtemperaturfeste Stähle bis 600°C sind beispielsweise Stähle gemäß DIN EN 10213. Hochtemperaturfeste Stähle bis 1200°C sind beispielsweise Stähle gemäß DIN EN 10295. Der untere, in Richtung der Grundplatte 12 weisende Bereich der Verschleißschutzeinheit ist aus dem Metallmatrixmaterial ausgebildet. Fig. 3 shows a detailed representation of the wear protection unit 24, the area of the wear protection unit 24 that is screwed to the base plate 12 being shown in a cross section. The wear protection unit 24 is formed from a metal matrix composite material which has a wear protection insert 34 made from a hard metal or ceramic. The wear protection insert 34 is arranged on the upper side of the wear protection unit 24 and, for example, forms the entire surface of the wear protection unit 24. The wear protection insert 34 can, for example, also form only part of the surface of the wear protection unit 24. The wear protection insert 34 comprises, for example, tungsten carbide, ceramic, titanium carbide, boron carbide or chromium carbide and has a porous or honeycomb structure. The wear protection insert 34 is formed in one piece and has, for example, a thickness of 5 mm to 50 mm, preferably 10 mm to 15 mm. The wear protection unit 24 is formed from the metal matrix material, the wear protection insert 34 being at least partially enclosed by the metal matrix material, in particular being cast into it. The metal matrix material is, for example, high-temperature resistant steel and / or a steel with a hardness of approximately 150-400 HB (Brinell). A high-temperature-resistant steel is to be understood as meaning a heat-resistant steel with a high chromium-nickel content, which has a temperature resistance of up to 650.degree. C., in particular up to 1000.degree. Such steels are, for example, austenitic chrome-nickel steels, such as GX25CrNiSi18-9, GX40CrNiSi25-12, GX40NiCrSiNb35-26. High-temperature-resistant steels up to 600 ° C are, for example, steels according to DIN EN 10213. High-temperature-resistant steels up to 1200 ° C are, for example, steels according to DIN EN 10295. The lower area of the wear protection unit facing towards the base plate 12 is made of the metal matrix material.

An der Verschleißschutzeinheit 24 ist ein Verschleißschutzelement 36 angebracht. Das Verschleißschutzelement ist beispielsweise aus Keramik und/oder einem Hartmetall, wie Wolframcarbid, Titancarbid, Borcarbid oder Chromcarbid ausgebildet. Das Verschleißschutzelement 36 ist an dem Flanschbereich 30, insbesondere an der nach außen weisenden Seitenfläche der Verschleißschutzeinheit 24 angebracht, vorzugsweise verschweißt, verlötet, verklebt oder verschraubt.A wear protection element 36 is attached to the wear protection unit 24. The wear protection element is formed, for example, from ceramic and / or a hard metal, such as tungsten carbide, titanium carbide, boron carbide or chromium carbide. The wear protection element 36 is attached to the flange area 30, in particular on the outwardly facing side surface of the wear protection unit 24, preferably welded, soldered, glued or screwed.

Bei der Herstellung der Verschleißschutzeinheit 24 wird eine die Verschleißschutzeinlage 34 aus Keramik oder Hartmetall, wie Wolframcarbid, Titancarbid, Borcarbid, Niobcarbid oder Chromcarbid oder eine Mischung aus diesen Werkstoffen, in einer Gussform zum Gießen der Verschleißschutzeinheit 24 positioniert, beispielsweise befestigt. Die Verschleißschutzeinlage 34 weist beispielsweise eine Plattenform auf und wird auf der Oberseite, insbesondere der in Richtung des zu klassierenden Materials weisenden Seitenfläche der Verschleißschutzeinheit positioniert. Anschließend wird das Verschleißschutzeinheit 24 aus dem Metallmatrixmaterial gegossen, sodass die Verschleißschutzeinlage 34 zumindest teilweise von dem Gussmaterial der Verschleißschutzeinheit 24 umschlossen wird, wobei das Gussmaterial beispielsweise in die poröse Struktur der Verschleißschutzeinlage 34 infiltriert. Insbesondere wird die Verschleißschutzeinlage 34 vollständig von dem Gussmaterial umschlossen.During the manufacture of the wear protection unit 24, a wear protection insert 34 made of ceramic or hard metal, such as tungsten carbide, titanium carbide, boron carbide, niobium carbide or chromium carbide or a mixture of these materials, is placed in a mold for casting Wear protection unit 24 positioned, for example fastened. The wear protection insert 34 has, for example, the shape of a plate and is positioned on the upper side, in particular the side surface of the wear protection unit facing in the direction of the material to be classified. The wear protection unit 24 is then cast from the metal matrix material so that the wear protection insert 34 is at least partially enclosed by the cast material of the wear protection unit 24, the casting material infiltrating, for example, into the porous structure of the wear protection insert 34. In particular, the wear protection insert 34 is completely enclosed by the casting material.

Das Verschleißschutzelement 36 wird darauffolgend an der Verschleißschutzeinheit 24 befestigt, insbesondere gelötet. Vorzugsweise wird die Verschleißschutzeinheit 24 vorab an den Verbindungsflächen, die mit dem Verschleißschutzelement 36 verbunden werden, bearbeitet, sodass die Verbindungsflächen eine geringe Rauheit von RZ= 1,6 - 10 und/ oder RA=0,4-1, vorzugsweise RZ=6 aufweisen.The wear protection element 36 is then attached to the wear protection unit 24, in particular soldered. The wear protection unit 24 is preferably processed beforehand on the connection surfaces that are connected to the wear protection element 36, so that the connection surfaces have a low roughness of RZ = 1.6-10 and / or RA = 0.4-1, preferably RZ = 6 .

Beispielsweise werden eine Mehrzahl solcher Siebsegmente 10 nebeneinander in einer geneigten Ebene an einem Träger 20 angeordnet und bilden eine Siebvorrichtung aus. Ein Siebsegment 10 wird beispielsweise in einem Winkel zur Horizontalen von etwa 5-20° ausgerichtet, sodass auf das Siebsegment 10 aufgegebenes zu klassierendes Material entlang der Oberfläche des Siebsegments 10 bewegt wird und somit eine effiziente Klassierung über die gesamte Oberfläche der Siebeinrichtung erreicht wird. Die Bewegungsrichtung des zu klassierenden Materials ist beispielhaft in Fig. 1 mit einem Pfeil gekennzeichnet. Es ist allerdings ebenfalls möglich, dass die Bewegungsrichtung des Materials orthogonal dazu verläuft, wobei dies von der Position des Siegsegments 10 in einer Siebeinrichtung abhängt. Im Betrieb der Siebvorrichtung wird diese über einen nicht dargestellten Antrieb, beispielsweise einen Schwingungserreger, derart angetrieben, dass die Siebsegmente 10 schwingend bewegt werden, sodass eine optimale Klassierung des auf die Siebvorrichtung aufgegebenen Materials erfolgt. Insbesondere weist die Siebeinrichtung wenigstens einen Aufgabebereich und wenigstens einen Abwurfbereich auf und die Verschleißschutzeinheiten sind an dem Siebsegment oder einer Mehrzahl von Siebsegmenten in dem Aufgabebereich angebracht. Die Verschleißschutzeinheiten 24 ermöglichen einen effektiven Verschleißschutz der Grundplatte 12 insbesondere in dem Aufgabebereich der Siebeinrichtung, in dem das zu klassierende Material auf die Oberfläche der Siebeinrichtung auftrifft. Durch die Schraubverbindungen sind die Verschleißschutzeinheiten in einem Verschleißfalle einfach von der Grundplatte 12 zu demontieren und auszutauschen.For example, a plurality of such sieve segments 10 are arranged next to one another in an inclined plane on a carrier 20 and form a sieve device. A sieve segment 10 is aligned, for example, at an angle to the horizontal of about 5-20 °, so that the material to be classified which is placed on the sieve segment 10 is moved along the surface of the sieve segment 10 and thus an efficient classification is achieved over the entire surface of the sieve device. The direction of movement of the material to be classified is exemplified in Fig. 1 marked with an arrow. However, it is also possible for the direction of movement of the material to run orthogonally thereto, this being dependent on the position of the victory segment 10 in a screening device. When the sieve device is in operation, it is driven by a drive (not shown), for example a vibration exciter, in such a way that the sieve segments 10 are moved in an oscillating manner, so that the material placed on the sieve device is optimally classified. In particular, the screening device has at least one feed area and at least one discharge area and the wear protection units are attached to the screen segment or a plurality of screen segments in the feed area. The wear protection units 24 enable effective wear protection of the base plate 12, in particular in the feed area of the screening device in which the material to be classified hits the surface of the screening device. As a result of the screw connections, the wear protection units can be easily dismantled from the base plate 12 and replaced in the event of wear.

BezugszeichenlisteList of reference symbols

1010
SiebsegmentSieve segment
1212th
GrundplatteBase plate
1414th
SiebdurchlässeSieve passages
1616
BefestigungsbereichAttachment area
1818th
BefestigungslöcherMounting holes
2020th
Trägercarrier
2222nd
Schraubescrew
2424
VerschleißschutzeinheitWear protection unit
2626th
KlassierungsbereichClassification area
2828
StegeBridges
3030th
FlanschbereichFlange area
3232
Vorsprunghead Start
3434
VerschleißschutzeinlageWear protection insert
3636
VerschleißschutzelementWear protection element

Claims (13)

  1. A screen segment (10) of a screening device for separating or classifying feed material, especially mineral crushed material such as oil sand, into at least two grain fractions, wherein the screen segment (10) comprises a base plate (12) essentially in the form of a screen having a multitude of screen passages (14), wherein at least one antiwear unit (24) has been mounted on the base plate (12), wherein
    the antiwear unit (24) has been formed from a metal matrix composite material having an antiwear insert (34) made of a hard metal and/or of ceramic,
    characterized in that
    the metal matrix composite material comprises a metal matrix material and wherein the antiwear insert (34) is cast at least partially into the metal matrix material of the antiwear unit (24).
  2. The screen segment (10) as claimed in claim 1, wherein the antiwear insert (34) is disposed on the surface of the antiwear unit (24).
  3. The screen segment (10) as claimed in either of the preceding claims, wherein the antiwear unit (24) has been produced by a casting method.
  4. The screen segment (10) as claimed in any of the preceding claims, wherein the antiwear unit (24) includes an antiwear element (36) mounted on an outward-facing lateral face of the antiwear unit (24).
  5. The screen segment (10) as claimed in claim 4, wherein the antiwear element (36) has been cohesively bonded, especially welded, sintered, adhesive bonded or soldered, to the antiwear unit (24).
  6. The screen segment (10) as claimed in any of the preceding claims, wherein the antiwear insert (34) and/or the antiwear element (36), comprises tungsten carbide, ceramic, titanium carbide, boron carbide, niobium carbide or chromium carbide or a mixture of these materials.
  7. The screen segment (10) as claimed in any of the preceding claims, wherein the antiwear insert (34) has a thickness of about 5 mm to 50 mm, preferably 10 mm to 15 mm.
  8. The screen segment (10) as claimed in any of the preceding claims, wherein the antiwear insert (34) has a porous structure.
  9. The screen segment (10) as claimed in any of the preceding claims, wherein the antiwear unit (24) has at least one land (28) and two flange regions (30) each connected to one end of the land (28) and wherein the flange region (30) of the antiwear unit (24) is bonded to the base plate (12).
  10. The screen segment (10) as claimed in any of the preceding claims, wherein the antiwear unit (24) has projections (32) that abut the base plate (12).
  11. A screening device having at least one screen segment (10) as claimed in any of the preceding claims and at least one vibration generator connected to the at least one screen segment (10) in order to cause it to vibrate.
  12. A method of producing a screen segment (10) of a screening device for separating or classifying feed material, especially mineral crushed material such as oil sand, into at least two grain fractions, wherein the screen segment (10) comprises a base plate (12) which is essentially in the form of a screen having a multitude of screen passages (14), and the method has the steps of:
    - positioning an antiwear insert (34) made of a hard metal or ceramic in a casting mold for casting of an antiwear unit (24),
    - casting the antiwear unit (24) with a metal matrix material, such that the antiwear insert (34) is at least partly enclosed by the metal matrix material of the antiwear unit (24) and is cast into the metal matrix material of the antiwear unit (24)
    - mounting the antiwear insert (34) on the base plate (12).
  13. The method as claimed in claim 12, wherein an antiwear element (36) made of a hard metal or ceramic is mounted on the cast antiwear unit (24).
EP18739842.5A 2017-07-12 2018-07-11 Screen segment having a wear protection and method for producing a screen segment Active EP3651915B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18739842T PL3651915T3 (en) 2017-07-12 2018-07-11 Screen segment having a wear protection and method for producing a screen segment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017211948.9A DE102017211948B3 (en) 2017-07-12 2017-07-12 Sieve segment with a wear protection and method for producing a sieve segment
PCT/EP2018/068739 WO2019011962A1 (en) 2017-07-12 2018-07-11 Screen segment having a wear protection and method for producing a screen segment

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EP3651915A1 EP3651915A1 (en) 2020-05-20
EP3651915B1 true EP3651915B1 (en) 2021-12-15

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EP (1) EP3651915B1 (en)
CA (1) CA3069383C (en)
DE (1) DE102017211948B3 (en)
PL (1) PL3651915T3 (en)
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WO (1) WO2019011962A1 (en)

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CN109877037B (en) * 2019-03-18 2022-04-19 连云港碱业有限公司 Method for quickly repairing outer-layer screen of lime slaking machine
DE102019212715A1 (en) * 2019-08-26 2020-03-05 Thyssenkrupp Ag Sieve made by casting
EP4065281B1 (en) * 2019-11-26 2024-03-06 FLSmidth A/S Wear-resistant element for a comminution device
CN111299152B (en) * 2020-03-03 2021-04-06 杨在喜 Grit multi-stage screening device of bridge construction usefulness
CN111408538A (en) * 2020-04-14 2020-07-14 安徽捷迅光电技术有限公司 Novel binary channels tealeaves shale shaker
BR112023002983A2 (en) * 2020-08-19 2023-04-04 Schenck Process Australia Pty Ltd IMPROVEMENTS IN SCREENING PANELS

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DE19528512C2 (en) * 1995-08-03 2001-02-22 Swb Stahlformgusgmbh Wear parts and process for their manufacture
DE102007034512B3 (en) 2007-07-24 2008-06-26 ThyssenKrupp Fördertechnik GmbH Drive device i.e. unbalance drive, for driving sieving body of sieving machine, has bearing units exclusively arranged at horizontal shafts in axis direction of shaft section between unbalance units and supported at crossbar
EP2459323B1 (en) * 2009-07-30 2015-12-16 Tega Industries Limited Improved screen panel and its relating production process
US8919567B2 (en) * 2011-10-12 2014-12-30 Syncrude Canada Ltd. Screen cloth for vibrating or stationary screens
DE102015213327B4 (en) 2015-07-16 2020-03-05 Thyssenkrupp Ag Sieve segment with wear protection elements
CA2950365C (en) * 2015-08-14 2018-06-12 Syncrude Canada Ltd. Slurry screen cloth

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EP3651915A1 (en) 2020-05-20
DE102017211948B3 (en) 2018-03-22
PL3651915T3 (en) 2022-04-11
WO2019011962A1 (en) 2019-01-17
CA3069383A1 (en) 2019-01-17
CA3069383C (en) 2022-03-22

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