EP2903755B1 - Dispositif et procede pour la classification de materiaux polydisperses - Google Patents

Dispositif et procede pour la classification de materiaux polydisperses Download PDF

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Publication number
EP2903755B1
EP2903755B1 EP13763032.3A EP13763032A EP2903755B1 EP 2903755 B1 EP2903755 B1 EP 2903755B1 EP 13763032 A EP13763032 A EP 13763032A EP 2903755 B1 EP2903755 B1 EP 2903755B1
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EP
European Patent Office
Prior art keywords
separating
conveying surface
separating element
feed material
openings
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13763032.3A
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German (de)
English (en)
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EP2903755A1 (fr
Inventor
Helfried GSCHAIDER
Franz DUNST
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.)
Binder and Co AG
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Binder and Co AG
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Publication of EP2903755A1 publication Critical patent/EP2903755A1/fr
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    • 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
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B07B1/34—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
    • B07B1/343—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen with mechanical drive elements other than electromagnets
    • 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
    • B07B1/48—Stretching devices for screens
    • B07B1/485—Devices for alternately stretching and sagging 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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/14—Details or accessories
    • B07B13/16—Feed or discharge arrangements
    • 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
    • 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets

Definitions

  • the present invention relates to a process for the separation of polydispersed feed into at least one fine material and at least one coarse material, wherein feed material on a openings having conveying surface of at least one separating element is applied and the feed material on the conveying surface while moving the same for the purpose of redeployment and loosening of the Material to be conveyed is conveyed in a conveying direction, wherein at the same time a portion of the feed material is conveyed through the openings on one of the conveying surface opposite side of the at least one separating element, wherein the separating element constructive individual separating elements are alternately compressed and stretched, and wherein the resulting fines and on the Conveying surface remaining coarse material are each transported independently, according to the preamble of claim 1 and an apparatus for performing the method with a frame, and at least ns a separating element arranged therein, which divides the frame into a Sieboberteil and a Siebunterteil and the at least one separating element has a conveying surface which is provided with openings
  • broken minerals are stones that are not naturally formed, but stones that were artificially crushed, for example, in a quarry.
  • surfaces of broken minerals are not rounded, but have edges and fracture surfaces. For the industrial processing of broken minerals, it is necessary to classify them into different particle size classes.
  • rock flour crushed sand, grit, gravel and scrap.
  • the defloration is done by sighting or sieving.
  • the use of visual systems is characterized by comparatively high energy requirements.
  • the screen-type deflaking requires correspondingly large screen surfaces.
  • the properties of the crushed sand have a high influence on the quality of the deflagration.
  • a very significant influence is attributable to the moisture content. Too high moisture content means that a sighting can no longer be carried out, since a corresponding discharge of the fine material by means of air in the cross flow is no longer possible.
  • the described problem has been described with reference to the deflagration of crushed sand, it is fundamentally independent of the grain size and, in particular, can also occur with other grain sizes or other feed material in a similar manner.
  • the invention is therefore not limited to a problem occurring only in the deflagration of crushing sand but basically to problems that exist in the separation of polydisperse feedstock in fines and coarse material.
  • the FR 1 177 873 A shows a device for dedusting of tablets by means of a Rüttelsiebs, wherein a created by means of compressed air injection air-dust mixture is sucked through a suction system.
  • the DE 10 2007 021004 B3 shows a screening machine for the separation of sieve-capable goods with two vibrating screening decks, wherein for the dedusting of fines a Querstromsichter is integrated in the screening machine.
  • this object is achieved by a method according to claim 1, wherein for the separation of polydisperse feed into at least one fines and at least one coarse material, feed on openings having conveying surface of at least one separating element is applied and the feed material on the conveying surface while moving the same purpose Um istung and loosening of the conveyed material is conveyed in a conveying direction, wherein at the same time a part of the feed material is conveyed through the openings on one of the conveying surface opposite side of the at least one separating element and the fines thus obtained and the coarse material remaining on the conveying surface are each transported independently, wherein conveying a portion of the feed material through the apertures is accomplished by creating a pressure differential along the longitudinal axes of the apertures.
  • the generation of the negative pressure improves the already known gravity classification due to the conveyance of the feed material along the conveying surface while it is being moved, and makes the process less susceptible to feed with a high moisture content.
  • crushed sands with relatively high moisture content the supported by the generated negative pressure screening has proved superior to conventional screenings without negative pressure, since the size of the openings despite relatively high moisture content of the feed material with constant selectivity yet against feed with less moisture content must not be increased.
  • the method according to the invention is less energy-intensive under the same boundary conditions than, for example, conventional vision systems.
  • the extraction of the mixture from the region below the at least one separating element facilitates the arrangement of further separating devices, as will be described in more detail below.
  • the movement of the conveying surface for switching and loosening of the applied feed material at least at times has a directional component which is parallel to the longitudinal axes of the openings.
  • the separating element constructing individual separating elements are alternately compressed or expanded.
  • This process which is already known per se from pure screening technology, in combination with the use of a negative pressure according to the invention, gives particularly good separation results and, in particular, also enables high-quality deflaking of crushed sands.
  • the average stratification of the feed material on the conveying surface during the movement of the conveying surface is such that, on the one hand, there is no excessive turbulence in the upper sieve part Size in relation to the cross-section of the openings are basically conveyed through this, are thrown too far from the conveying surface to be promoted due to the negative pressure generated by the openings and on the other hand, no too low loosening of the feed material, which would lead to due their size in relation to the cross section of the openings are basically prevented by these grains conveyed to part of larger grains at the passage through the openings, so that a total of a longer process time or larger separation surfaces are required.
  • the at least one separating element undergoes, at least in sections, an acceleration between 250 m / s 2 and 600 m / s 2 due to the upsetting and stretching.
  • the fine material resulting from the separation is passed into a further separation device, preferably a gas cyclone.
  • the fines can be separated and further processed in a cost-effective and procedurally simple manner from the process air required for the production of the reduced pressure in this way.
  • a device for carrying out the method just described, with a frame, and at least one separating element disposed therein, which divides the frame into a Sieboberteil and a Siebunterteil and at least one separating element has a conveying surface , which is provided with openings which connect the Sieboberteil with the Siebunterteil.
  • a lower pressure prevails in the lower part of the sieve than in the upper part of the sieve.
  • the lower part of the sieve is connected to a suction device, for example a suction fan.
  • a suction device for example a suction fan.
  • a pressure difference between 100 and 250 Pa, preferably between 150 and 200 Pa is.
  • a vibration drive is provided on the frame, with which the frame is set into vibration.
  • the conveying surface or sections thereof in the context of the oscillation different movement direction components.
  • the vibration can for example be adjusted so that the conveying surface only in one direction moved at right angles to the longitudinal axes of the openings or so that the movement of the conveying surface takes place in a direction parallel to the longitudinal axes of the openings.
  • an attached to the frame additional oscillating system is provided and the at least one separating element attached on the one hand to the frame and on the other hand on the additional oscillating system to stretch and compress the at least one separating element.
  • a further preferred embodiment of the invention provides that the conveying surface inclined in the operating state of the device relative to the horizontal, preferably inclined at an angle 10 ° to 20 ° to the horizontal runs.
  • Fig.1 and 2 show a separating device according to the invention with a support 20 on springs 20 coupled to oscillate frame 7, and a arranged therein
  • the Sieboberteil 8 can be provided with a cover (not shown) or designed to be open at the top. In the Sieboberteil 8 opens a feed nozzle 18, via which feed material 1 can be introduced into the separator.
  • the separating element 6 itself can be made in one piece or in several pieces.
  • the separating element 6 comprises a plurality of substantially identically constructed individual separating elements 6a, as is apparent Figure 6 and 7 it can be seen that together form the separating element 6.
  • the surface of the integrally or multiply constructed separation element 6 forms a conveying surface 5, on which the feed material 1 is applied.
  • the conveying surface 5 or the separating element 6 have openings 4, via which, depending on the cross section of the openings 4, a portion of the feed material 1 is conveyed into the lower sieve part 9.
  • the separating device is preferably provided in the region of the upper sieve 8 with an oscillating drive 13 in the form of an imbalance drive, comprising a motor 22, a shaft 23 and imbalances 24, which can cause the frame 7 to vibrate, whereby the applied to the conveying surface 5.
  • Feed material 1 is conveyed over the conveying surface 5 and thereby partially falls through the openings 4 due to gravity.
  • the promotion is supported by a relative to the horizontal inclined, preferably inclined by an angle between 10 and 20 °, course of the conveying surface. 5
  • That part of the feed material 1, which is conveyed through the openings 4 in the Siebunterteil 9 is referred to for the purposes of the present invention as fines 2, that part which remains in the Sieboberteil 8, as coarse material 3. While the coarse material 3 via a on Sieboberteil 8 at the end of the conveying surface 5 arranged dispensing nozzle 19 is fed to a further processing, the fines 2 is discharged via a subsequent directly to the Siebunterteil 9 collecting hopper 21, wherein Siebunterteil 9 and collecting hopper 21 may also be integrally formed.
  • a pressure difference along the longitudinal axes 15 of the openings 4 is formed, wherein the pressure in the region of the lower part 9 is lower than in the region of the Sieboberteils 8 to assist in the transport of a portion of the feed material 1 through the openings 4 and thus to improve the selectivity compared to conventional genus same separators.
  • a suction device 10 is used, which is connected to the Siebunterteil 9 and the is suitable to form a pressure difference between 100 and 250 Pa, preferably between 150 and 200 Pa, measured between the conveying surface 5 and that of the conveying surface 5 opposite side 12 of the separating element. 6
  • a further separating device for example a gas cyclone 11, via which the fines 2 can be separated and fed to a disposal or further processing.
  • a further separating device for example a gas cyclone 11
  • other separating devices such as filters.
  • the use of a further separating device 11, in addition to the separating element 6, in combination with the production according to the invention of a negative pressure leads to outstanding results in terms of selectivity, while reducing the susceptibility of the blockage of the openings 4 in wet feed.
  • Fig.1 and Figure 3 show different possible arrangements of gas cyclones 11.
  • FIG. 4 and Figure 5 show an alternative embodiment of the invention according to the invention with reference to a Spannwellensiebmaschine.
  • Sieboberteil 8 and Siebunterteil 9 form a first oscillating system.
  • An additional oscillating system 14 is. via elastic elements 27, for example, sliding rubber blocks, coupled to the first oscillating system.
  • the separating elements 6a are fastened on the one hand to the first and on the other hand to the additional oscillating system 14, so that the separating elements 6a, which are pulled up along the frame frame 7 at their lateral end regions in the present embodiment, so that a separating element 6a seen in the conveying direction is a substantially U- has shaped cross-section, in addition to the oscillating motion caused by the oscillating drive 13 also compress and stretch.
  • Such a type of screening machines is basically known.

Claims (9)

  1. Procédé pour séparer une matière de charge (1) polydispersée en au moins une fraction fine (2) et au moins une fraction grosse (3), dans lequel de la matière de charge (1) est déposée sur une surface de transport (5) d'au moins un élément séparateur (6) munie d'ouvertures (4) et la matière de charge (1) est transportée sur la surface de transport (5) dans un sens de transport (17) avec en même temps un mouvement de celle-ci visant à stratifier et ameublir la matière transportée (1), dans lequel une partie de la matière de charge (1) est en même temps acheminée à travers les ouvertures (4) vers un côté (12) de l'au moins un élément séparateur (6) opposé à la surface de transport (5), dans lequel des éléments séparateurs discrets (6a) constituant l'élément séparateur (6) sont alternativement compressés et étirés, et dans lequel la fraction fine (2) ainsi obtenue ainsi que la fraction grosse (3) restée sur la surface de transport (5) sont ensuite transportées indépendamment l'une de l'autre, caractérisé en ce que l'acheminement d'une partie de la matière de charge (1) à travers les ouvertures (4) est favorisé par la production d'une différence de pression le long des axes longitudinaux (15) des ouvertures (4), laquelle différence de pression, mesurée au niveau de la surface de transport (5) de l'au moins un élément séparateur (6) et du côté (12) de l'au moins un élément séparateur (6) opposé à la surface de transport (5), est comprise entre 100 Pa et 250 Pa, de préférence entre 150 Pa et 200 Pa.
  2. Procédé pour la séparation de matière de charge selon la revendication 1, caractérisé en ce que la différence de pression est produite par l'aspiration d'un mélange d'air et de fraction fine (2) à partir de la zone située en dessous de l'au moins un élément séparateur (6).
  3. Procédé pour la séparation de matière de charge selon la revendication 1 ou 2, caractérisé en ce que le mouvement de la surface de transport (5) pour la stratification et l'ameublissement de la matière de charge (1) déposée comprend au moins de façon temporaire une composante directionnelle qui est parallèle aux axes longitudinaux (15) des ouvertures (4).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que les éléments séparateurs discrets (6a) subissent, du fait de la compression et de l'étirement, une accélération comprise entre 250 m/s2 et 600 m/s2.
  5. Procédé pour la séparation de matière de charge selon l'une des revendications 1 à 4, caractérisé en ce que la fraction fine (2) est acheminée vers un autre dispositif de séparation, de préférence un cyclone à gaz (11) ou un filtre.
  6. Dispositif de séparation pour la mise en oeuvre d'un procédé selon l'une des revendications 1 à 5, avec un bâti (7) et avec au moins un élément séparateur (6) disposé dans celui-ci, qui partage le bâti (7) en une partie supérieure de crible (8) et une partie inférieure de crible (9), lequel au moins un élément séparateur (6) présente une surface de transport (5) qui est munie d'ouvertures (4) qui font communiquer la partie supérieure de crible (8) avec la partie inférieure de crible (9), le bâti (7) portant un entraînement vibratoire (13) qui peut entraîner le bâti (7) dans des vibrations et un système vibratoire supplémentaire (14) étant prévu sur le bâti (7), et l'au moins un élément séparateur (6) est fixé, d'une part, au bâti (7) et d'autre part au système vibratoire supplémentaire (14) pour étirer et compresser l'au moins un élément séparateur (6), caractérisé en ce que la pression régnant dans la partie inférieure de crible (9) est plus basse que dans la partie supérieure de crible (8) et en ce qu'il se crée entre la partie supérieure de crible (8) et la partie inférieure de crible (9) une différence de pression, mesurée sur la surface de transport (5) de l'au moins un élément séparateur (6), d'une part, et sur le côté (12) de l'au moins un élément séparateur (6) opposé à la surface de transport (5), d'autre part, comprise entre 100 Pa et 250 Pa, de préférence entre 150 Pa et 200 Pa.
  7. Dispositif de séparation selon la revendication 6, caractérisé en ce que la partie inférieure de crible (9) est reliée à un dispositif d'aspiration (10).
  8. Dispositif de séparation selon la revendication 7, caractérisé en ce qu'un autre dispositif de séparation, de préférence un cyclone à gaz (11), est disposé entre le dispositif d'aspiration (10) et la partie inférieure de crible (9).
  9. Dispositif de séparation selon l'une des revendications 6 à 8, caractérisé en ce que la surface de transport (5) est inclinée par rapport à l'horizontale dans l'état de fonctionnement du dispositif, de préférence d'un angle de 10° à 20° par rapport à l'horizontale.
EP13763032.3A 2012-10-02 2013-09-12 Dispositif et procede pour la classification de materiaux polydisperses Active EP2903755B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3902012 2012-10-02
PCT/EP2013/068923 WO2014053295A1 (fr) 2012-10-02 2013-09-12 Dispositif et procédé de criblage de matériau de chargement polydispersé

Publications (2)

Publication Number Publication Date
EP2903755A1 EP2903755A1 (fr) 2015-08-12
EP2903755B1 true EP2903755B1 (fr) 2016-07-20

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WO (1) WO2014053295A1 (fr)

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CN104736699B (zh) 2012-09-14 2020-04-14 拜尔作物科学有限合伙公司 Hppd变体及使用方法
CN105190656B (zh) 2013-01-17 2018-01-16 佩索纳里斯公司 用于遗传分析的方法和系统
GB2534067B (en) 2013-08-30 2021-07-21 Personalis Inc Methods and systems for genomic analysis
WO2015051275A1 (fr) 2013-10-03 2015-04-09 Personalis, Inc. Procédés d'analyse de génotypes
EP3117003B1 (fr) 2014-03-11 2019-10-30 BASF Agricultural Solutions Seed US LLC Variants hppd et leurs procédés d'utilisation
EP4026913A1 (fr) 2014-10-30 2022-07-13 Personalis, Inc. Procédés d'utilisation du mosaïcisme dans des acides nucléiques prélevés de façon distale par rapport à leur origine
US11299783B2 (en) 2016-05-27 2022-04-12 Personalis, Inc. Methods and systems for genetic analysis
KR20200036858A (ko) * 2017-07-31 2020-04-07 바스프 에스이 고흡수성 폴리머 입자의 분류 방법
US10801064B2 (en) 2018-05-31 2020-10-13 Personalis, Inc. Compositions, methods and systems for processing or analyzing multi-species nucleic acid samples
US11814750B2 (en) 2018-05-31 2023-11-14 Personalis, Inc. Compositions, methods and systems for processing or analyzing multi-species nucleic acid samples
CN111014183A (zh) * 2019-12-28 2020-04-17 安徽鼎恒再制造产业技术研究院有限公司 一种用于回收非晶纳米晶粉末的设备
CN111482355B (zh) * 2020-04-30 2022-07-22 重庆德庄农产品开发有限公司 原料筛分进料装置
CN113070205A (zh) * 2021-04-12 2021-07-06 南京工业职业技术大学 一种农用谷物的高效筛分装置
CN113070206A (zh) * 2021-04-12 2021-07-06 南京工业职业技术大学 一种农用谷物收割的高效筛分装置
CN113426674B (zh) * 2021-08-26 2021-10-29 江苏新鹏重型机电制造有限公司 一种具有反吹防堵结构的粉料加工用选粉装置及实施方法
CN114700168B (zh) * 2021-09-30 2023-07-14 中国矿业大学 一种干湿法联合脱泥分选系统及分选方法
CN114308639A (zh) * 2022-01-04 2022-04-12 颍上米克斯压力容器有限公司 一种方便进行剔除的颗粒式震荡分离器
CN114766705B (zh) * 2022-04-27 2023-05-16 河南中烟工业有限责任公司 一种卷烟加工用烟丝风选机

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DE102007021004B3 (de) * 2007-05-04 2008-05-15 Rhewum Gmbh Siebmaschine

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EP2903755A1 (fr) 2015-08-12

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