EP0223639A1 - Method of and device for putting apart spherical materials possibly showing imperfections - Google Patents

Method of and device for putting apart spherical materials possibly showing imperfections Download PDF

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Publication number
EP0223639A1
EP0223639A1 EP86402142A EP86402142A EP0223639A1 EP 0223639 A1 EP0223639 A1 EP 0223639A1 EP 86402142 A EP86402142 A EP 86402142A EP 86402142 A EP86402142 A EP 86402142A EP 0223639 A1 EP0223639 A1 EP 0223639A1
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Prior art keywords
turn
balls
pitch
broken
steps
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EP86402142A
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German (de)
French (fr)
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EP0223639B1 (en
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Georges Berrebi
François Ackermann
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Europeenne De Retraitement De Catalyseurs (en Abre
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Europeene de Retraitement de Catalysateurs EURECAT
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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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/10—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices using momentum effects
    • B07B13/11—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices using momentum effects involving travel of particles over surfaces which separate by centrifugal force or by relative friction between particles and such surfaces, e.g. helical sorters

Definitions

  • the present invention relates to a helical vibrating lifting device and its use for effecting an effective separation between spherical particles and non-spherical particles, for example for separating balls of neighboring sizes, some being round, the others being broken (broken).
  • This invention possibly coupled with separation by screening, makes it possible in particular to restore to refiners or petrochemicals batches of inert perfectly calibrated beads.
  • the device according to the invention can be used for other applications, for example, for separating the shell grains in the food industry or for separating spherical catalysts from poorly formed spheres.
  • the apparatus makes it possible to carry out the separation of spherical materials according to their size as well as the separation of the spheres and of the fragments of spheres which will be called hereinafter "broken".
  • the system according to the invention makes it possible to exclude broken grains from a mixture of spherical or ovoid products and, for example, to eliminate broken ceramic beads in beds of inert beads which refiners have in hydrotreatment reactors which allows, after sorting, to restore a batch of inert balls perfectly calibrated and therefore reusable with an efficiency equal to that of new materials.
  • the apparatus according to the invention is of the helical vibrating lift type; it consists of at least one substantially horizontal turn (substantially vertical axis) whose width is between approximately 50 and 400mm and preferably between 200 and 300mm with a pitch (distance between the tops of two turns) from 50 to 150mm, and preferably of the order of 80 to 120mm, for example around 100mm.
  • the slope is from 2 to 20 degrees approximately and preferably from 9 to 16 degrees.
  • the turn or each turn, if there are several, has 2 to 9 steps or more for example up to 150 steps by way of example and is wound around a hollow barrel at the base or at the top of which, for example, systems are arranged allowing the barrel-turn assembly to take a vibratory movement of variable amplitude.
  • the vibrations can be produced by at least one system placed at any suitable level, for example at the base or at the top of the barrel or else positioned around the coil.
  • the unbalance motors the electro-magnetic vibrators (excited by a variable cycle, with creation of pulses), and the unbalance exciters.
  • the amplitude (lateral) of the vibration movement thus communicated to the assembly can thus vary between 0.2 and 15mm and preferably between 2 and 5.5mm.
  • the barrel-turn assembly, source of vibration could be arranged, for example, on a central post serving as support, various anti-vibration materials which can be interposed between the barrel and the post.
  • the material used for making the coil, or more exactly the steps of the coil may be a blasted mild steel, or a stainless steel, etc., coated with an anti-rust paint.
  • modifying the coating of the pitch that is to say, for example, by spraying a plastic paint or by sticking a rubber band, or any other suitable material, it is possible on the one hand to modify the coefficient of adhesion and, therefore, the segregation of powdery products for a given amplitude, but also considerably reduce the noise caused by the movements of balls on the steel.
  • Figure 1 there is shown a barrel or post (7) with a turn (4) to 5 steps, such as (5).
  • the unbalance motor (6) generates vibrations around the axis or post.
  • the flow of the mixture of beads to be separated or of beads and broken pieces to be separated is introduced via the pipe. 1 into the periphery of the coil, in a step between the upper step and the lower step, and for example in a step located halfway up the coil.
  • the solid particles will thus circulate on the band of the turn or circulation band of the step, this circulation band being delimited by the internal and external edges of each step.
  • the larger balls they descend along the whorl, with a speed which accelerates so that under the effect of centrifugal force, the large balls roll more and more on the periphery of the whorl, c that is to say mainly between the outer edges of the circulation band of each step and said middle part of the step. Therefore, gradually and without hindering, the balls descend along the outer edges of the steps of the turn against small beads or broken pieces that travel from bottom to top, along the inner edges of the steps of the turn.
  • the vibration system is subject to an appropriate adjustment depending on the nature and dimensions of the particles to be withdrawn.
  • the small balls or the broken pieces are evacuated at the top by the pipe 3, the balls of the desired size being recovered by the pipe 2 at the bottom of the turn.
  • FIG. 1 shows the apparatus of Figure 1, seen from above.
  • Each of these 3 types of particles represents 1/3 by volume of the total mixture.
  • the amplitude of the vibrations was adjusted to 2mm: it was observed that the breaks are animated by a vibration movement such that, by successive micro-projection on the step, they rise in the coil and leave the coil via the conduit 3 while the balls of diameters 2.54cm and 1.27cm descend downwards or remain in the lower part of the coil, and end up being evacuated through the conduit 2.

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  • Combined Means For Separation Of Solids (AREA)
  • Crushing And Grinding (AREA)

Abstract

L'invention concerne un procédé et un appareillage pour la séparation de matières pulvérulentes, sous forme de billes ou de granulés. Elle est caractérisée par l'emploi d'un élévateur vibrant hélicoïdal (4) soumis à des vibrations dont l'amplitude est choisie de façon à provoquer sur les pas (5) de la spire la circulation ascendante des particules dont on veut se débarrasser, en maintenant la descente vers le bas de la spire des particules à récupérer. L'invention permet notamment de séparer des billes rondes de billes cassées.The invention relates to a method and an apparatus for the separation of pulverulent materials, in the form of beads or granules. It is characterized by the use of a helical vibrating elevator (4) subjected to vibrations the amplitude of which is chosen so as to cause on the steps (5) of the turn the ascending circulation of the particles which one wishes to get rid of, maintaining the descent to the bottom of the turn of the particles to be recovered. The invention makes it possible in particular to separate round balls from broken balls.

Description

La présente invention concerne un appareil élévateur vibrant hélicoïdal et son utilisation pour effectuer une séparation efficace entre des particules sphériques et des particules non sphériques, par exemple pour séparer des billes de tailles voisines les unes étant rondes, les autres étant cassées (brisures).The present invention relates to a helical vibrating lifting device and its use for effecting an effective separation between spherical particles and non-spherical particles, for example for separating balls of neighboring sizes, some being round, the others being broken (broken).

Cette invention, couplée éventuellement à la séparation par criblage, permet notamment de restituer aux raffineurs ou aux pétrochimistes des lots de billes inertes parfaitement calibrées.This invention, possibly coupled with separation by screening, makes it possible in particular to restore to refiners or petrochemicals batches of inert perfectly calibrated beads.

Mais l'appareil selon l'invention peut être utilisé pour d'autres applications, par exemple, pour séparer les grains de coques en agro-alimentaire ou pour séparer des catalyseurs sphériques d'avec des sphères mal formées.However, the device according to the invention can be used for other applications, for example, for separating the shell grains in the food industry or for separating spherical catalysts from poorly formed spheres.

D'une façon générale, l'appareil permet de réaliser la séparation de matériaux sphériques suivant leur taille ainsi que la séparation des sphères et des éclats de sphères qu'on appellera ci-après "brisures".Generally, the apparatus makes it possible to carry out the separation of spherical materials according to their size as well as the separation of the spheres and of the fragments of spheres which will be called hereinafter "broken".

Le système selon l'invention permet d'exclure les brisures d'un mélange de produits sphériques ou ovoïdes et, par exemple, d'éliminer les billes de céramiques cassées dans des lits de billes inertes que les raffineurs disposent dans les réacteurs d'hydrotraitement ce qui permet, après triage, de restituer un lot de billes inertes parfaitement calibrées et donc réutilisables avec une efficacité égale à celle des matériaux neufs.The system according to the invention makes it possible to exclude broken grains from a mixture of spherical or ovoid products and, for example, to eliminate broken ceramic beads in beds of inert beads which refiners have in hydrotreatment reactors which allows, after sorting, to restore a batch of inert balls perfectly calibrated and therefore reusable with an efficiency equal to that of new materials.

L'appareil selon l'invention est du type élévateur vibrant hélicoïdal ; il est constitué d'au moins une spire sensiblement horizontale (axe sensiblement vertical) dont la largeur est comprise entre environ 50 et 400mm et de préférence entre 200 et 300mm avec un pas (distance entre les sommets de deux spires) de 50 à 150mm, et de préférence de l'ordre de 80 à 120mm, par exemple environ 100mm. La pente est de 2 à 20 degrés environ et de préférence de 9 à 16 degrés. La spire ou chaque spire, s'il y en a plusieurs, comporte 2 à 9 pas ou davantage par exemple jusqu'à 150 pas à titre d'exemple et est enroulée autour d'un fût creux à la base ou au sommet duquel, par exemple, sont disposés des systèmes permettant à l'ensemble fût-spire de prendre un mouvement vibratoire d'amplitude variable.The apparatus according to the invention is of the helical vibrating lift type; it consists of at least one substantially horizontal turn (substantially vertical axis) whose width is between approximately 50 and 400mm and preferably between 200 and 300mm with a pitch (distance between the tops of two turns) from 50 to 150mm, and preferably of the order of 80 to 120mm, for example around 100mm. The slope is from 2 to 20 degrees approximately and preferably from 9 to 16 degrees. The turn or each turn, if there are several, has 2 to 9 steps or more for example up to 150 steps by way of example and is wound around a hollow barrel at the base or at the top of which, for example, systems are arranged allowing the barrel-turn assembly to take a vibratory movement of variable amplitude.

Les vibrations peuvent être produites par au moins un système placé à tout niveau adéquat, par exemple à la base ou au sommet du fût ou encore positionné autour de la spire. Parmi les systèmes que l'on pourra choisir, on nommera par exemple : les moteurs à balourds, les vibrants électro-magnétiques (excités par un cycle variable, avec création d'impulsions), et les excitatrices à balourds. L'amplitude (latérale) du mouvement de vibration ainsi communiqué à l'ensemble (déplacement latéral des parois verticales du fût) peut ainsi varier entre 0,2 et 15mm et de préférence entre 2 et 5,5mm. L'ensemble fût-spire, source de vibration, pourraît être disposée, à titre d'exemple, sur un poteau central servant de support, divers matériaux anti-vibratiles pouvant être interposés entre le fût et le poteau. Le matériau utilisé pour la confection de la spire, ou plus exactement des pas de la spire, peut être un acier doux sablé, ou un inox, etc..., revêtue d'une peinture anti-rouille. En modifiant le revêtement du pas, c'est-à-dire, par exemple, en projetant une peinture plastique ou en collant une bande caoutchouc, ou toute autre matière convenable, on peut d'une part modifier le coefficient d'adhérence et, par conséquent, la ségrégation des produits pulvérulents pour une amplitude donnée, mais aussi réduire considérablement le bruit provoqué par les mouvements de billes sur l'acier.The vibrations can be produced by at least one system placed at any suitable level, for example at the base or at the top of the barrel or else positioned around the coil. Among the systems which one will be able to choose, one will name for example: the unbalance motors, the electro-magnetic vibrators (excited by a variable cycle, with creation of pulses), and the unbalance exciters. The amplitude (lateral) of the vibration movement thus communicated to the assembly (lateral displacement of the vertical walls of the barrel) can thus vary between 0.2 and 15mm and preferably between 2 and 5.5mm. The barrel-turn assembly, source of vibration, could be arranged, for example, on a central post serving as support, various anti-vibration materials which can be interposed between the barrel and the post. The material used for making the coil, or more exactly the steps of the coil, may be a blasted mild steel, or a stainless steel, etc., coated with an anti-rust paint. By modifying the coating of the pitch, that is to say, for example, by spraying a plastic paint or by sticking a rubber band, or any other suitable material, it is possible on the one hand to modify the coefficient of adhesion and, therefore, the segregation of powdery products for a given amplitude, but also considerably reduce the noise caused by the movements of balls on the steel.

Sur la figure 1 on a représenté un fût ou poteau (7) avec une spire (4) à 5 pas, tels que (5).In Figure 1 there is shown a barrel or post (7) with a turn (4) to 5 steps, such as (5).

Le moteur à balourds (6), engendre les vibrations autour de l'axe ou poteau .The unbalance motor (6) generates vibrations around the axis or post.

Le flux du mélange de billes à séparer ou de billes et brisures à séparer (céréales, céramiques réfractaires, pastilles, dragées utilisées en pharmacie, confiserie, catalyseurs, etc... est introduit par la conduite.1 dans la périphérie de la spire, dans un pas situé entre le pas supérieur et le pas inférieur, et par exemple dans un pas situé à mi-hauteur de la spire.The flow of the mixture of beads to be separated or of beads and broken pieces to be separated (cereals, refractory ceramics, pellets, dragees used in pharmacy, confectionery, catalysts, etc.) is introduced via the pipe. 1 into the periphery of the coil, in a step between the upper step and the lower step, and for example in a step located halfway up the coil.

Les particules solides circuleront ainsi sur la bande de la spire ou bande de circulation du pas, cette bande de circulation étant délimitées par les bords internes et externes de chaque pas.The solid particles will thus circulate on the band of the turn or circulation band of the step, this circulation band being delimited by the internal and external edges of each step.

C'est le règlage du système de vibration, dépendant essentiellement de la taille des particules à séparer et de leur quantité, c'est-à-dire de leur vitesse d'introduction dans la spire, qui permet la séparation désirée. On aperçoit au voisinage du pas d'introduction des solides, une circulation assez confuse des mélanges de billes et ou des brisures avec notamment une amorce de descente de toutes les particules, les plus petites étant entraînées par les plus grosses, mais de façon inattendue ensuite, les billes les plus petites ou les brisures se mettent à circuler de bas en haut, en majeure partie entre le long des bords internes de la bande de circulation de chaque pas et la partie médiane de la surface de circulation délimitée par la surface du pas, et remontent à contrecourant des billes les plus larges. Quant aux billes les plus larges, elles descendent le long de la spire, avec une vitesse qui s'accélère de sorte que sous l'effet de la force centrifuge, les grosses billes roulent de plus en plus à la périphérie de la spire, c'est-à-dire en majeure partie entre les bords externes de la bande de circulation de chaque pas et ladite partie médiane du pas. De ce fait, progressivement et sans se gêner, les billes descendent le long des bords extérieurs des pas de la spire à contrecourant des petites billes ou des brisures qui cheminent de bas en haut, le long des bords internes des pas de la spire.It is the adjustment of the vibration system, essentially depending on the size of the particles to be separated and their quantity, that is to say their speed of introduction into the coil, which allows the desired separation. We see in the vicinity of the pitch of introduction of the solids, a rather confused circulation of the mixtures of balls and or broken pieces with in particular a primer of descent of all the particles, the smallest being entrained by the largest, but unexpectedly then , the smallest balls or the broken pieces start to circulate from bottom to top, mainly between along the internal edges of the circulation band of each step and the middle part of the circulation surface delimited by the surface of the step , and go up against the widest logs. As for the larger balls, they descend along the whorl, with a speed which accelerates so that under the effect of centrifugal force, the large balls roll more and more on the periphery of the whorl, c that is to say mainly between the outer edges of the circulation band of each step and said middle part of the step. Therefore, gradually and without hindering, the balls descend along the outer edges of the steps of the turn against small beads or broken pieces that travel from bottom to top, along the inner edges of the steps of the turn.

Le système de vibration est soumis à un règlage approprié fonction de la nature et des dimensions des particules à soutirer.The vibration system is subject to an appropriate adjustment depending on the nature and dimensions of the particles to be withdrawn.

Sur la figure 1, les petites billes ou les brisures sont évacuées en haut par la conduite 3, les billes de la taille désirées étant récupérées par la conduite 2 au bas de la spire.In FIG. 1, the small balls or the broken pieces are evacuated at the top by the pipe 3, the balls of the desired size being recovered by the pipe 2 at the bottom of the turn.

La figure 2 représente l'appareil de la figure 1, vu par dessus.Figure 2 shows the apparatus of Figure 1, seen from above.

EXEMPLEEXAMPLE

On a procédé à des essais de séparation de mélanges de particules solides :

  • le mélange envoyé par la conduite 1 de la figure 1 comportait 3 types de particules :
    • - billes d'environ 2,54cm de diamètre (1 inch), chaque bille pesant environ 21,3g.
    • - billes d'environ 1,27cm de diamètre (1/2 inch), chaque bille pesant environ 5,2g.
    • - brisures pesant chacune, selon les tailles, 0,5 à 15g.
Separation tests were carried out on mixtures of solid particles:
  • the mixture sent via line 1 of FIG. 1 contained 3 types of particles:
    • - beads about 2.54cm in diameter (1 inch), each ball weighing about 21.3g.
    • - beads approximately 1.27cm in diameter (1/2 inch), each ball weighing approximately 5.2g.
    • - broken pieces each weighing, depending on the size, 0.5 to 15g.

Chacun de ces 3 types de particules représente 1/3 en volume du mélange total.Each of these 3 types of particles represents 1/3 by volume of the total mixture.

On a utilisé une spire de 4,5 pas, la largeur du pas étant 10cm.We used a whorl of 4.5 steps, the width of the step being 10cm.

Dans un premier essai, on a réglé à 2mm l'amplitude des vibrations : on a observé que les brisures sont animées d'un mouvement de vibration tel que, par micro-projection successives sur le pas, elles s'élèvent dans la spire et sortent de la spire par le conduit 3 alors que les billes de diamètres 2,54cm et 1,27cm descendent vers le bas ou restent dans la partie inférieure de la spire, et finissent par s'évacuer par le conduit 2.In a first test, the amplitude of the vibrations was adjusted to 2mm: it was observed that the breaks are animated by a vibration movement such that, by successive micro-projection on the step, they rise in the coil and leave the coil via the conduit 3 while the balls of diameters 2.54cm and 1.27cm descend downwards or remain in the lower part of the coil, and end up being evacuated through the conduit 2.

Dans un deuxième essai, on a réglé à 3,5mm l'amplitude des vibrations : on a observé ici que les billes de diamètre 1,27cm s'élèvent également avec les brisures, et qu'ainsi, seules sortent par le conduit 1 les billes de 2,54cm de diamètre.In a second test, the amplitude of the vibrations was adjusted to 3.5 mm: it was observed here that the 1.27 cm diameter balls also rise with the breaks, and that thus, only come out through the conduit 1 2.54cm diameter beads.

D'autres essais effectués sur des mélanges de billes de diamètre 0,63cm (1/4 d'inch), 1,27cm (1/2 inch), 1,90 (3/4 d'inch), 2,54cm (1 inch) et 5,08cm (2 inch) ainsi que sur des brisures de ces différentes granulométries, montrent qu'en choisissant la bonne amplitude, on peut, dans tous les cas, séparer les matériaux sphériques ou ovoïdes des particules comportant une ou plusieurs surfaces planes et ceci avec des rendements allant de 95 à 98% dans les cas les plus défavorables et avec 99 à 100% d'efficacité dans la majorité des cas.Other tests carried out on mixtures of diameters 0.63cm (1/4 inch), 1.27cm (1/2 inch), 1.90 (3/4 inch), 2.54cm ( 1 inch) and 5.08cm (2 inch) as well as on the breaks of these different particle sizes, show that by choosing the right amplitude, one can, in all cases, separate the spherical or ovoid materials from the particles comprising one or more flat surfaces and this with yields ranging from 95 to 98% in the most unfavorable cases and with 99 to 100% efficiency in the majority of cases.

Claims (5)

1.- Procédé pour séparer entre elles des billes solides de tailles différentes ou des billes solides et des brisures solides, le procédé étant caractérisé en ce que le flux du mélange à séparer est envoyé sur les pas d'au moins une spire dont la largeur est comprise entre 50 et 400mm, la spire comportant au moins 2 pas, la largeur d'un pas étant comprise entre 50 et 150mm, la pente d'un pas étant comprise entre 2 et 20 degrés, la spire étant soumise à un mouvement vibratoire s'exerçant sur l'axe de la spire, l'amplitude latérale du mouvement vibratoire variant entre 0,2 et 15mm, les vibrations provoquant ainsi des cheminements en sens contraire des billes ou des brisures, les billes les plus petites lorsqu'on désire séparer des billes de diamètres différents (ou les brisures lorsqu'on désire séparer des billes de brisures) (ou les brisures et les billes les plus petites si l'on désire séparer des billes d'une part et des billes plus petites et des brisures d'autre part) s'élevant en cheminant le long des pas, en majeure partie entre le long des bords internes de la bande de chaque pas et la partie médiane de la surface de circulation délimitée par la surface de la spire, vers l'extrémité supérieure de la spire d'où elles sont soutirées, les billes les plus grosses descendant, en majeure partie entre les bords externes de la bande de chaque pas et ladite partie médiane du pas, vers l'extrémité inférieure de la spire d'où elles sont soutirées.1.- Method for separating between them solid balls of different sizes or solid balls and solid broken, the method being characterized in that the flow of the mixture to be separated is sent over the steps of at least one turn whose width is between 50 and 400mm, the turn having at least 2 steps, the width of a step being between 50 and 150mm, the slope of a step being between 2 and 20 degrees, the turn being subjected to a vibratory movement being exerted on the axis of the whorl, the lateral amplitude of the vibratory movement varying between 0.2 and 15mm, the vibrations thus causing pathways in the opposite direction of the balls or broken pieces, the smallest balls when desired separate balls of different diameters (or broken pieces when you want to separate broken balls) (or broken pieces and smaller balls if you want to separate balls on the one hand and smaller balls and broken pieces on the other hand) rising in ch eminating along the steps, mainly between along the internal edges of the band of each step and the middle part of the circulation surface delimited by the surface of the turn, towards the upper end of the turn from where they are withdrawn, the largest balls descending, mainly between the outer edges of the strip of each step and said middle part of the step, towards the lower end of the turn from which they are withdrawn. 2.- Procédé selon la revendication 1 dans lequel le flux du mélange à séparer est envoyé environ dans un pas situé entre le pas supérieur et le pas inférieur de la spire.2.- Method according to claim 1 wherein the flow of the mixture to be separated is sent approximately in a pitch located between the upper pitch and the lower pitch of the turn. 3.- Appareil pour séparer des particules solides comportant - au moins une spire comportant au moins 2 pas, ladite spire s'enroulant hêlicoldalement autour de son axe ou d'un fût, la largeur de la spire étant comprise entre 200 et 300mm, la hauteur d'un pas étant comprise entre 80 et 120mm, la pente du pas ou de la spire étant compris entre 9 et 16 degrés, - au moins une conduite d'alimentation d'un mélange de solide débouchant dans la spire entre son extrémité supérieure et son extrémité inférieure. - au moins.. une conduite de soutirage de particules solides (brisures ou billes de tailles relativement petites) vers l'extrémité supérieure de la spire, - au moins une conduite de soutirage de particules solides (billes de tailles relativement grandes) vers l'extrémité inférieure de la spire, - des moyens pour imprimer des vibrations à l'ensemble spire-fût, l'amplitude des vibrations étant comprise entre 2 et 5,5mm. 3.- Apparatus for separating solid particles comprising - At least one turn having at least 2 steps, said turn being helically wound around its axis or a barrel, the width of the turn being between 200 and 300 mm, the height of a step being between 80 and 120mm, the pitch of the pitch or the whorl being between 9 and 16 degrees, - At least one supply line of a solid mixture opening into the turn between its upper end and its lower end. - at least .. a line for withdrawing solid particles (broken or relatively small-sized balls) towards the upper end of the turn, at least one line for withdrawing solid particles (balls of relatively large sizes) towards the lower end of the turn, - Means for imparting vibrations to the whorl-barrel assembly, the amplitude of the vibrations being between 2 and 5.5 mm. 4.- Appareil selon la revendication 3 dans lequel ladite conduite d'alimentation débouche environ à une hauteur comprise entre le pas inférieur de la spire et un pas situé sensiblement à mi-hauteur de ladite spire.4.- Apparatus according to claim 3 wherein said supply line opens approximately at a height between the lower pitch of the turn and a pitch located substantially halfway up said turn. 5.- Appareil selon l'une des revendications 3 et 4 dans lequel la bande de la spire ou des pas de la spire sur laquelle circulent les particules solides, est recouverte d'une peinture plastique ou de caoutchouc ou d'une matière similaire, en vue d'améliorer la ségrégation des produits pulvérulents.5.- Apparatus according to one of claims 3 and 4 wherein the band of the turn or steps of the turn on which the solid particles circulate, is covered with a plastic paint or with rubber or a similar material, with a view to improving the segregation of powdered products.
EP86402142A 1985-10-23 1986-10-01 Method of and device for putting apart spherical materials possibly showing imperfections Expired - Lifetime EP0223639B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8515947A FR2588783B1 (en) 1985-10-23 1985-10-23 METHOD AND APPARATUS FOR PERFORMING THE SEPARATION OF SPHERICAL MATERIALS WITH OR WITHOUT IMPERFECTIONS
FR8515947 1985-10-23

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EP0223639A1 true EP0223639A1 (en) 1987-05-27
EP0223639B1 EP0223639B1 (en) 1990-09-12

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EP86402142A Expired - Lifetime EP0223639B1 (en) 1985-10-23 1986-10-01 Method of and device for putting apart spherical materials possibly showing imperfections

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US (1) US4986424A (en)
EP (1) EP0223639B1 (en)
JP (1) JP2620854B2 (en)
CA (1) CA1315738C (en)
DE (1) DE3674156D1 (en)
FR (1) FR2588783B1 (en)

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US4839031A (en) * 1986-12-09 1989-06-13 Europeenne De Retraitement De Catalyseurs Eurecat Process for performing the separation of extruded materials which may or may not show imperfections
US5082552A (en) * 1986-03-10 1992-01-21 Cri International, Inc. Hydrotreating with catalyst particles using length and density grading
CN106111544A (en) * 2016-08-17 2016-11-16 南京西普水泥工程集团有限公司 Ball mill grinding body sorting device

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US8322538B2 (en) * 2009-08-19 2012-12-04 Janssen Bill M Method and apparatus for separating fines from rock
US20150020597A1 (en) * 2013-07-17 2015-01-22 Sanyasi R. Kalidindi Accelerated powder segregation testing apparatus and method
DE102017004272B3 (en) * 2017-05-04 2018-06-28 Doppstadt Familienholding Gmbh Device for classifying classed goods
CN108722870B (en) * 2018-04-17 2021-01-15 张掖市农业科学研究院 Screening machine and screening equipment
CN111822363A (en) * 2020-07-02 2020-10-27 江苏奥力斯特科技有限公司 Spiral gravity screening method and device for pills
CN114733768A (en) * 2022-04-15 2022-07-12 国药集团中联药业有限公司 Centrifugal pill selecting machine

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US2936072A (en) * 1958-06-04 1960-05-10 Gulf Research Development Co Nutating helicoid separating apparatus
US3464550A (en) * 1967-05-04 1969-09-02 Dow Chemical Co Continuous solid particle shape classifier
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US5082552A (en) * 1986-03-10 1992-01-21 Cri International, Inc. Hydrotreating with catalyst particles using length and density grading
US4839031A (en) * 1986-12-09 1989-06-13 Europeenne De Retraitement De Catalyseurs Eurecat Process for performing the separation of extruded materials which may or may not show imperfections
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CN106111544A (en) * 2016-08-17 2016-11-16 南京西普水泥工程集团有限公司 Ball mill grinding body sorting device
CN106111544B (en) * 2016-08-17 2018-01-05 南京西普水泥工程集团有限公司 Ball mill grinding body sorting device

Also Published As

Publication number Publication date
JPS62168583A (en) 1987-07-24
US4986424A (en) 1991-01-22
FR2588783B1 (en) 1988-01-15
DE3674156D1 (en) 1990-10-18
JP2620854B2 (en) 1997-06-18
EP0223639B1 (en) 1990-09-12
CA1315738C (en) 1993-04-06
FR2588783A1 (en) 1987-04-24

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