WO2023161864A1 - Dispositif de fragmentation et de réduction de la quantité d'échantillons minéraux - Google Patents

Dispositif de fragmentation et de réduction de la quantité d'échantillons minéraux Download PDF

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Publication number
WO2023161864A1
WO2023161864A1 PCT/IB2023/051718 IB2023051718W WO2023161864A1 WO 2023161864 A1 WO2023161864 A1 WO 2023161864A1 IB 2023051718 W IB2023051718 W IB 2023051718W WO 2023161864 A1 WO2023161864 A1 WO 2023161864A1
Authority
WO
WIPO (PCT)
Prior art keywords
sample
preparation device
crusher
sample preparation
outlet
Prior art date
Application number
PCT/IB2023/051718
Other languages
German (de)
English (en)
Inventor
Marius Combrinck
Reinhard Teutenberg
Original Assignee
Flsmidth A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102022201949.0A external-priority patent/DE102022201949A1/de
Priority claimed from LU102915A external-priority patent/LU102915B1/de
Application filed by Flsmidth A/S filed Critical Flsmidth A/S
Publication of WO2023161864A1 publication Critical patent/WO2023161864A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/18—Devices for withdrawing samples in the liquid or fluent state with provision for splitting samples into portions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G01N2001/2866—Grinding or homogeneising

Definitions

  • the invention relates to a device which crushes mineral samples and thereby produces a smaller representative sample from a larger sample.
  • samples are taken to check the mineral content in the rock. This can be, for example, the iron or gold content of the mined material.
  • samples are often taken in sizes from 2 kg to 10 kg, also in order to ensure a certain width and thus meaningfulness of the sample with the fragment size.
  • These samples are then comminuted, for example in a crusher, and a partial sample is taken from them for further analysis, for example with a size of 500 g. Often, another reserve sample of the same size is taken.
  • This small sub-sample must be representative of the entire sample and thus representative of the entire rock.
  • the object of the invention is to provide a device which can provide such a representative partial sample.
  • the sample preparation device has a sample container introduction, a receiving device for the sample container of the input material, a crusher, a sample divider, a partial sample container guide, a residual sample removal and suction and cleaning devices. At least one sample container with a corresponding rock sample can be inserted via the sample container inlet. The contents of an inserted sample container, the sample, can be transferred to the crusher by means of the receiving device. In the crusher, the sample is then crushed into fine-grained material. The ones in the crusher crushed sample can be transferred to the sample divider. A continuous transfer preferably takes place during the breaking process.
  • the sample divider has at least a first outlet to a partial sample container.
  • the sample divider preferably also has a third outlet to a further sub-sample container in order to produce a second sample or a reserve sample. There is also a second outlet for residual sample removal.
  • the samples are representative of the input material and can be compared with one another.
  • the divider feed and the at least one first outlet and the second outlet can be moved relative to one another. This means that either the divider feed is moved and the first exit and the second exit are fixed. Depending on the type of movement, different amounts of material get into the first exit or the second exit.
  • the divider feeder can be fixed and the first exit and second exit moved under the divider feeder. This also makes it possible to vary the ratio of the amount of sample that reaches the first outlet and the second outlet.
  • both divider feed and first exit and second exit can be moved.
  • This option has the highest complexity without a direct benefit.
  • the relative movement of the divider feed and the at least one first outlet and the second outlet is regulated by a control unit.
  • the control unit can regulate the regulation as described below on the basis of, for example, the weight of the sample in the sample container or the sample in the sub-sample container in order to achieve a predetermined target size for the sub-sample.
  • the sample preparation device thus differs fundamentally from conventional, mostly manual methods.
  • the subsample is taken distributed over the entire sample, not just, for example, at the beginning or in one piece.
  • the sample divider has a rotatable feed tube as a divider feed and a funnel-shaped interior space.
  • the feed pipe can, for example, protrude obliquely into the funnel-shaped interior space or it first goes vertically into the funnel-shaped interior space and then has a deflection so that the material flow is guided onto the side wall of the funnel-shaped interior space.
  • At least one first sample outlet is arranged on the side of the funnel-shaped interior space, preferably also a second sample outlet for the reference sample or second partial sample.
  • the bottom of the funnel-shaped interior is connected to the residual sample removal.
  • the movement of the feed tube can be variably controlled in order to narrow the sample down to the sub-sample.
  • the advantage of this embodiment is the particularly good, dust-tight design, which makes it possible to clean the sample divider using gas in order to enable automatic cleaning between two samples in a simple manner.
  • the feed tube can be rotated via a servo drive.
  • a servo drive This not only makes it possible to set the rotation speed, but also not only to always make a complete rotation, but to always swivel back and forth in a semicircle, ie 180°. If the first sample outlet is in this swept area, the amount going into the first partial sample is practically doubled.
  • the sub-sample size can thus be specifically controlled by any adjustable value. This is particularly easy to implement with a servo motor.
  • a specified rotational speed is particularly preferably kept constant.
  • the divider feed can be moved linearly over the at least one first outlet and the second outlet. The movement allows the proportionate dwell time to be adjusted so that the size of the sub-sample can be controlled in a controlled manner.
  • the divider feed is fixed and the at least one first outlet is movable.
  • the at least one first output linearly movable.
  • the first exit is moved between a position between the divider feed and the second exit and a position outside. This also makes targeted sample division very easy.
  • the at least one first outlet and the second outlet can be moved in a circular manner.
  • the movement is analogous to the rotatable feed tube, except that the lower area, preferably the funnel-shaped area, is rotated instead of the feed tube.
  • the receiving device for the sample container of the input material has a plunger arranged on the underside and a funnel arranged on the upper side.
  • the plunger is designed to press a sample container arranged in the receiving device against the funnel and thus to fix it.
  • the receiving device can be pivoted with the positioned sample container and the sample or sample material can thus be poured out of the sample container via the funnel.
  • the sample container is preferably brought very close to the input funnel of the crusher by the receiving device, thereby reducing the drop height of the sample material. This means that the sample material can be handed over almost dust-free.
  • the dust-free transfer is particularly preferably supported by a suction device in the area of the transfer point.
  • the receiving device has a pivoting device.
  • the pivoting device is designed to empty a sample container arranged in the receiving device into the crusher.
  • the axis of rotation of the pivoting device is preferably arranged between the crusher and the starting position of the receiving device for loading with a sample container.
  • the crusher is a jaw crusher. In another embodiment of the invention, the crusher is a cone crusher.
  • the sample preparation device has a first side for manual operation and a second side for automatic operation. This means that an unhindered and safe manual intervention is possible from one side, while automatic access is possible from the second side, which is preferably opposite the first side.
  • access includes in particular the supply of sample containers with samples and the removal of partial samples in partial sample containers.
  • Automatic access can take place, for example, via a robot or via a conveyor belt system. Due to the spatial separation, the sample preparation device acts as a separation and security between an automated system on the one hand and a human on the other.
  • the sample preparation device has first openings on the first side and second openings on the second side. There are preferably at least two first openings, a first first opening for introducing sample containers and a second first opening for removing partial sample containers. There are preferably at least two second openings, a first second opening for introducing sample containers and a second second opening for removing partial sample containers. In addition, there may be, for example, a third first port and a third second port used for aliquot containers for reserve samples. In addition, there can be, for example, a fourth first port and a fourth second port used for the delivery of empty aliquot containers.
  • the sample preparation device locks the second ports when a first port is opened and locks the first ports when a second port is opened.
  • the locking can be done selectively.
  • the sample preparation device locks the first first opening when the first second opening is used, but the second first opening remains accessible. In this way, it is ruled out that man and machine access the same interior of the sample preparation device and this creates a risk of injury, but maximum flexibility and operability is maintained.
  • Locking a Opening can take place, for example, by locking a door, flap, slider or the like, which closes the opening. It is only important that the locking prevents access to prevent the risk of injury.
  • first side and the second side are opposite.
  • the receiving device for the sample container has an input scale (weighing device).
  • an input scale weighing device
  • the mass of the sample can be entered manually or transferred electronically to the sample preparation device.
  • the input scales also make it possible to determine whether the sample container has been completely emptied or whether a residue of the sample has remained in the sample container. If the latter is the case, the control scheme for moving the feed tube can be adjusted to transfer more of the sample into the aliquot, thereby again achieving the same target aliquot weight. Alternatively, if the sample material remains in the sample container, the tipping process can be carried out again.
  • the partial sample container guide has at least one first partial sample scale. In this way, the weight and thus the achievement of the target weight of the sub-sample can be tracked directly and, if necessary, the control scheme for the movement of the feed tube can be adjusted.
  • the partial sample container guide has at least one storage location for a partial sample that has already been filled. This allows a second sample to be processed while the first partial sample has not been removed from the sample preparation device. This increases the independence of the sample preparation device from other processes outside of the sample preparation device.
  • the partial sample container guide has a supply of empty, clean partial sample containers which, if required, can be arranged under the first exit by the partial sample container guide. This can also increase the independence and thus the availability of the sample preparation device.
  • the crusher has a crusher housing.
  • the crusher housing is preferably designed in such a way that the crusher housing allows forced guidance of the air that is blown in and sucked out.
  • the crusher housing has at least one connection for suction.
  • the crusher housing preferably also has an air inlet. This makes it possible to easily clean the crusher between two samples, for example using compressed air, by preferably supplying compressed air at the top at the point where the sample is applied and sucking it off via the suction device, which is preferably arranged in the lower area of the crusher housing.
  • the suction is therefore preferably as far away as possible from the addition of the compressed air, particularly preferably in the lower area of the crusher housing and more preferably on the side opposite the outlet for the crushed sample.
  • an optimal flow control can be achieved in order to reliably remove dust outside of the crusher room.
  • the crusher has baffle plates and a special housing geometry (housing) that enable a forced air flow, with corresponding connections for suction prevent the dust from escaping.
  • This makes it possible to easily clean the crusher by means of compressed air between two different samples, by preferably supplying compressed air at the top at the point where the sample is applied and sucking it off via the suction device.
  • the suction is therefore preferably as far away as possible from the addition of the compressed air, particularly preferably in the lower area of the crusher housing and more preferably on the side opposite the outlet for the crushed sample.
  • an optimal flow control can be achieved in order to reliably remove dust outside of the crusher room.
  • the crusher is connected to a sample divider via a conveyor chute.
  • the conveying trough results in an equalization of the material flow of the broken sample. The more evenly the broken sample is delivered to the sample divider, the more reliably the sub-sample size can be predicted.
  • a magnetic drive of the conveying trough also called dosing trough, sets the trough in an oscillating motion.
  • the oscillating amplitude and thus the conveying speed of the conveying chute are regulated via an upstream thyristor control.
  • the conveyor chute is closed and has only one inlet opening to the crusher and one outlet opening to the sample divider. This makes it possible to clean the conveyor chute together with the crusher using compressed air. At the same time, additional dust is prevented from being distributed inside the sample preparation device during transport of the broken sample. Therefore, the crusher, the conveying chute and the sample divider are preferably tightly connected to each other. In this context, tight means preferably dust-tight, particularly preferably air-tight. In order to create such a tight connection, the transitions between the crusher and the conveyor chute and between the conveyor chute and the sample divider must be designed to be movable in order to be able to compensate for the movements of the conveyor chute.
  • a suction device can be arranged under the underside of the funnel-shaped interior.
  • the suction is pivotable, so that it is only arranged under the underside of the funnel-shaped interior for cleaning, while in normal operation a direct
  • a suction device is arranged under the underside of the crushing chamber.
  • the partial sample container for receiving the previously broken and divided material is pressed under the first outlet of the sample divider, for example with the aid of a pressure cylinder, during dosing and sample division. This ensures a dust-free transfer of the material from the sample divider to the partial sample container.
  • the filling level of the partial sample containers is monitored during the dosing process. For example, two threshold switches can be provided for this purpose. When the first switching threshold is reached, the dosing behavior can be adjusted automatically. For this purpose, the amount of material conveyed can be influenced via the conveying channel and/or the travel path of the rotatable feed tube in the sample divider can also be changed.
  • the second switching threshold prevents the partial sample container from overflowing and/or indicates that the target value has been reached (filling level limit).
  • the partial sample container is lowered again and optionally weighed.
  • the partial sample container is moved using the partial sample container guide and placed in the desired removal position for manual or automatic removal.
  • Suction elements are now swiveled under the discharge openings of the sample divider and pressed under the openings by the pressure cylinder.
  • the cleaning of the sample path can begin by injecting compressed air and appropriate and targeted dust extraction.
  • the invention relates to a method for operating a sample preparation device according to the invention.
  • the method comprises the following steps: a) inserting a sample container into the sample container inlet, b) emptying the sample container into the crusher using the pivotable sample container receiving device, c) crushing the sample in the crusher, d) transferring the crushed sample into the sample divider , e) continuous distribution of the sample to the at least one first sample outlet and the residual sample removal, f) output of the sub-samples.
  • the introduction of the sample container in step a) can be done manually or mechanically.
  • the sample container is preferably emptied in step b) by pivoting the sample container so that the sample container is emptied into the crusher through an opening originally arranged on the upper side of the sample container.
  • the crushing of the sample in step c) is preferably carried out in a jaw crusher.
  • the aim is to comminute the sample to such an extent that it is sufficiently fine for further investigations. This also serves to obtain a sub-sample that is as representative as possible, since components from many areas of the sample get into the sub-sample.
  • a jaw crusher it is possible to break down a very inhomogeneous starting material to a significantly reduced maximum particle size.
  • the transfer in step d) preferably takes place via a conveyor chute.
  • This has the advantage that fluctuations in the material flow can be at least partially compensated.
  • intermediate storage in particular with additional mixing, can also be provided.
  • the continuous splitting of the sample in step e) is another essential part.
  • the rotatable feed tube is continuously moved so that it occasionally feeds material from the broken sample to the first outlet. Due to the constant movement of the rotatable feed tube, sample material is sometimes transferred to the first outlet and thus to the partial sample, and sometimes not.
  • the sample for the sub-sample is sampled continuously over the entire period in order to obtain a representative cross-section.
  • the proportion of time is thus controlled while the sample material is fed through the first outlet and thus the sub-sample.
  • a dynamic adaptation to different initial sizes of the sample can also be carried out in this way in order to achieve a reliable sub-sample size, which forms an optimal cross-section over the entire sample, reproducibly and independently of the sample size.
  • the method also has the following step: g) Cleaning the sample preparation device by blowing a gas, for example air, preferably in the form of compressed air, into the crusher and sucking off the gas at least on the underside of the funnel-shaped interior or the crusher housing.
  • a gas for example air, preferably in the form of compressed air
  • suction is additionally carried out at the crusher in step g). This means that the areas inside the crusher that are not in the regular flow of material, but where dust can easily penetrate, can also be better cleaned.
  • the division in step e) takes place by adjusting the rotation of the feed tube.
  • the division takes place in Step e) by adjusting the rotation of the delivery tube by having the delivery tube sweep less than 360° and then reversing direction.
  • This back-and-forth movement adjusts the amount of time that the delivery tube sweeps across the first outlet and the optional second outlet, and thus the portion of the sample that ends up in the sub-sample. It is preferable to start with a continuous 360° movement in a specific direction.
  • the sample material is usually divided into two sub-samples and a remainder. The back and forth movement will be activated sooner or later depending on the target quantity.
  • the angle is also specified here and the range (eg 270°) in which the rotatable feed tube is to be pivoted back and forth is thus defined.
  • This angle can also be varied several times during the dividing process.
  • the partial amounts that are conveyed in particular to the first outlet and the second outlet via the rotatable feed pipe are proportionately increased and the waste material (residual amount) is reduced.
  • the displacement angle can nevertheless be set in such a way that, for example, only the first output or the second output is controlled via the rotatable feed tube. In this case, only one partial sample container is filled and the corresponding remaining amount is discarded.
  • the division in step e) can be based on the mass of the sample. Alternatively or additionally, the division in step e) can be based on the mass of the sub-sample.
  • FIG. 1 schematic cross section
  • FIG. 1 A schematic cross section of the sample preparation device 10 is shown in FIG. 1 .
  • a sample container 70 is placed on a pivotable receiving device 20 for the sample container 70 and fixed with a stamp 160 .
  • the sample container 70 can be dispensed with the receiving device 20 and the contents of the sample container 70 can thus be transferred into the crusher 30, as shown in FIG.
  • the sample is crushed in the crusher 30 and reaches the conveying chute 130.
  • the conveying chute 130 the broken sample is preferably transported by means of vibrations, which brings about an equalization of the material flow. From the conveying chute 130, the broken sample reaches the sample divider 40, more precisely into the rotatable feed tube 100.
  • the rotatable feed tube 100 is driven by a servo motor 140 and a V-belt 150 and is continuously pivoted over a sample-dependent angle range.
  • the material flow is continuously directed to different areas of the funnel-shaped interior 110 and thus reaches the first outlet 80, the second outlet 90, and the third outlet 82.
  • Below the first outlet 80 and the third outlet 82 are partial sample containers 120 arranged on a aliquot container guide 50 .
  • a sub-sample can be used for further investigation, the second, for example, stored as a reserve sample or used for further treatments and investigations. Both sub-samples are preferably of the same size, have a predefined weight or fill quantity at the end and are each representative of the entire sample. The majority of the sample usually reaches the residual sample removal 60 via the second outlet 90 and is discarded.
  • the sample preparation device 10 has, for example, three openings, a sample container inlet 170 for inserting the sample container 70 and a first sample outlet 180 and a second sample outlet 182 for removing the partial sample container 120.
  • the side shown is the side for manual operation.
  • the sample preparation device 10 then preferably has corresponding openings on the rear side (not shown). All openings are preferred can be closed automatically on the inside, whereby only one of the opposite openings can be opened at a time.
  • FIG. 4 shows a more detailed cross-section of the crusher 30.
  • the crusher 30 has a fixed jaw 190 and a moving jaw 200 which is driven by the motor 210.
  • FIG. A suction device 220 is arranged underneath the motor, so that dust which is to the left of the moving jaw 200 can also be reliably removed by means of a housing and forced air guidance.
  • the fractured sample 230 is then transferred to the conveyor chute 130 .
  • FIGS. 5 and 7 Four alternative embodiments of a sample divider 40 are shown in FIGS. 5 and 7 .
  • FIG. 5 shows a round, rotating structure of the sample part 40 viewed from above.
  • the delivery tube 100 can be rotated while the funnel-shaped interior 110 with the first exit 80 and the third exit 82 are rigid.
  • the funnel-shaped inner space 100 with the first outlet 80 and the third outlet 82 can be rotated while the feed tube 100 is rigid.
  • the controllability is to be explained below using the example of the rotatable feed tube 100 . If, for example, the rotatable feed tube 100 is rotated by 360°, there is a first dwell time over the first outlet 80 and the third outlet 82. This determines the ratio of how much of the sample goes into the first outlet 80 and into the third outlet 82 and the second exit 90 arrive.
  • the proportion of dwell time over the first exit 80 and the third exit 82 increases compared to the second exit 90. If the rotatable feed tube 100 is only rotated by Rotates 180° from top to left to bottom and back again, the proportion of the dwell time above the first outlet 80 increases, while the third outlet 82 is no longer swept, ie no sample is received. In this way, a targeted control of the rotation of the rotatable feed tube 100 is possible in order to be able to set the quantity of the sub-samples in a targeted manner.
  • the position of the first outlet 80 and the third outlet 82 can also be chosen differently.
  • first outlet 80 and the third outlet 82 can also be arranged opposite one another, ie at an angle of 180° to one another.
  • first outlet 80 and the third outlet 82 can be directly adjacent, with the angle between the outlets corresponding approximately to the opening angle of the outlets.
  • FIG. 6 shows some possible oscillating rotational movements of the round, rotating structure of the sample part 40 shown in FIG.
  • first rotary movement 300 a range of 270° is swept back and forth.
  • sample is fed both to the first outlet 80 and to the third outlet 82 .
  • the angle is reduced, for example to 180°, as shown in the second rotational movement 310 .
  • the angle is increased, for example to 360°. Since the angle can be set as desired, the ratio of the size between the sub-sample and the remainder, which is discarded through the second outlet 90, can be set in a targeted manner.
  • the movement shown in the third rotational movement 320 sweeps only the first exit 80, but not the third exit 82.
  • the third rotational movement 320 sweeps 180° like the second rotational movement. While the second rotary movement 310 is from right to bottom to left and back, the third rotary movement 320 is from bottom to left to top and back. A targeted enlargement or reduction of individual sub-samples relative to one another is thus also possible. If the sub-samples have already reached the target size, sample material can be supplied exclusively to the second outlet 90, for example by means of the fourth rotary movement 330, which runs from left to top to right and back. It is essential that both the starting point and the end point of the rotary movement can be freely selected. This means that each position can be controlled in a targeted manner, and even with a larger number of outputs 80, 82, sub-samples can be taken in a targeted and representative manner.
  • FIG. 1 A linear structure of the sample divider 40 is shown in FIG. There are two variants for the embodiment shown.
  • the delivery tube 100 can be moved linearly from right to left and back, while the funnel-shaped interior 110 with the first exit 80 and the third exit 82 are rigid.
  • the funnel-shaped interior 100 with the first exit 80 and the third exit 82 can be moved linearly from right to left and back again while the delivery tube 100 is rigid.
  • the amount of sample transferred to the first outlet 80 and the third outlet 82 can be controlled in a targeted manner via the length of the movement, for example of the feed tube 100 .

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  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Hydrology & Water Resources (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

La présente invention concerne un dispositif de préparation d'échantillon comprenant un moyen d'insertion de récipient d'échantillon, un dispositif de réception, un broyeur, un diviseur d'échantillon, un guide de récipient d'échantillon partiel et un moyen d'élimination d'échantillon résiduel, un récipient d'échantillon pouvant être inséré par l'intermédiaire du moyen d'insertion de récipient d'échantillon, le contenu d'un récipient d'échantillon inséré pouvant être transféré dans le broyeur au moyen du dispositif de réception, l'échantillon fragmenté dans le broyeur pouvant être transféré dans le diviseur d'échantillon, le diviseur d'échantillon ayant au moins une première sortie vers un récipient d'échantillon partiel et une seconde sortie vers le moyen d'élimination d'échantillon résiduel, le diviseur d'échantillon ayant un tuyau d'alimentation rotatif, le diviseur d'échantillon ayant un intérieur en forme d'entonnoir, au moins une première sortie d'échantillon étant agencée sur le côté de l'intérieur en forme d'entonnoir, la face inférieure de l'intérieur en forme d'entonnoir étant connectée au moyen d'élimination d'échantillon résiduel, et le mouvement du tuyau d'alimentation pouvant être commandé de manière variable.
PCT/IB2023/051718 2022-02-25 2023-02-24 Dispositif de fragmentation et de réduction de la quantité d'échantillons minéraux WO2023161864A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102022201949.0A DE102022201949A1 (de) 2022-02-25 2022-02-25 Vorrichtung zur Zerkleinerung und mengenmäßigen Reduzierung mineralischer Proben
LU102915A LU102915B1 (de) 2022-02-25 2022-02-25 Vorrichtung zur Zerkleinerung und mengenmäßigen Reduzierung mineralischer Proben
LULU102915 2022-02-25
DE102022201949.0 2022-02-25

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2164672A1 (de) * 1971-12-24 1973-08-16 Kali & Salz Ag Verfahren zur probenahme von pulvrigen, koernigen, granulierten stoffen und reduzierung der teilmengen unterpgewinnung von urspruenglichen und untersuchungsmustern
CH694871A5 (de) * 2000-06-29 2005-08-15 Buerkle Gmbh Probenteiler.
EP2837925A1 (fr) * 2013-04-26 2015-02-18 Mitsubishi Materials Corporation Procédé et dispositif d'échantillonnage de matières premières recyclées, échantillon d'analyse de matières premières recyclées et procédé d'évaluation de matières premières recyclées

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2164672A1 (de) * 1971-12-24 1973-08-16 Kali & Salz Ag Verfahren zur probenahme von pulvrigen, koernigen, granulierten stoffen und reduzierung der teilmengen unterpgewinnung von urspruenglichen und untersuchungsmustern
CH694871A5 (de) * 2000-06-29 2005-08-15 Buerkle Gmbh Probenteiler.
EP2837925A1 (fr) * 2013-04-26 2015-02-18 Mitsubishi Materials Corporation Procédé et dispositif d'échantillonnage de matières premières recyclées, échantillon d'analyse de matières premières recyclées et procédé d'évaluation de matières premières recyclées

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