EP1243339A2 - Process of selectively separating particles from a suspension - Google Patents

Process of selectively separating particles from a suspension Download PDF

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Publication number
EP1243339A2
EP1243339A2 EP02004850A EP02004850A EP1243339A2 EP 1243339 A2 EP1243339 A2 EP 1243339A2 EP 02004850 A EP02004850 A EP 02004850A EP 02004850 A EP02004850 A EP 02004850A EP 1243339 A2 EP1243339 A2 EP 1243339A2
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EP
European Patent Office
Prior art keywords
process liquid
suction device
mesh
suction
fragmented
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EP02004850A
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German (de)
French (fr)
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EP1243339B1 (en
EP1243339A3 (en
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Wolfram Edinger
Volker Neubert
Christoph Dr. Schultheiss
Ralf Strässner
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Forschungszentrum Karlsruhe GmbH
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Forschungszentrum Karlsruhe GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B02C2019/183—Crushing by discharge of high electrical energy

Definitions

  • the invention relates to a suction device in a shock wave generating Fragmentation device for suctioning fragmented Good.
  • Fragmentation systems are known in which over current Discharges in a process fluid along shock waves along the discharge channels along the material to be fragmented are generated, which are then based on the good to be fragmented striking outside, acting.
  • the one filled in the reaction vessel in the process liquid sinking fragmentation material is in the reaction space between the tip of the high voltage electrode and the bottom of the vessel the electrical discharges of a capacitive energy store exposed and smashed. From a certain grain size are fraction parts by the discharge or the Shock wave in a row whirled up in the process liquid and distributed in it. A kind of suspension is created. Not vacuumed Fraction parts, on the other hand, sink again and become again exposed to unloading and further destruction.
  • the task is performed by a suction device according to the preamble of claim 1 and its characteristic features solved.
  • the basket at the end of the suction device, which is in the process liquid protrudes, and the mesh covering the basket are made of a tough, shock wave resistant material.
  • the Mesh size of the fabric determines up to which grain size particles suspended in the process liquid are sucked out. Particles with grain size above it, oversize held in the process liquid and by the on the basket incoming shock wave and its releasing effect again in the fragmentation volume forced back to the subsequent smashing process to be exposed again.
  • the mesh fabric on the one hand from an electrically conductive Tissue such as stainless steel (claim 2), which, as requested over the mechanical stress is also chemically resistant to the Process liquid and the substances dissolved in it, or from a dielectric fabrics such as tough plastic with such mechanically and chemically resistant properties.
  • an electrically conductive Tissue such as stainless steel (claim 2), which, as requested over the mechanical stress is also chemically resistant to the Process liquid and the substances dissolved in it, or from a dielectric fabrics such as tough plastic with such mechanically and chemically resistant properties.
  • suction baskets can be replaced quickly and by suction baskets with a different mesh size on the suction basket can be replaced is the production of narrow-band grain size fillings easy to achieve. With every shock wave generation there is always a knock on the surrounding of the suction basket Grid instead. This makes it a continuous one Operation of such a fragmentation system possible, but not must be interrupted by a special cleaning phase.
  • the reaction vessel ( Figure 2) is partially with process liquid filled, which is water here, because e.g. such substances as Ceramics, glass and minerals are to be fragmented.
  • the high-voltage electrode protrudes along the axis of the vessel and keeps a predetermined distance with her free forehead to the bottom of the vessel.
  • the high voltage electrode is with an insulation, so only from the area of their tip the discharges take place towards the bottom of the reaction vessel.
  • the bottom is curved, roughly spherical, so that the Process goods accumulate there and are safely exposed to unloading is.
  • the ones to be fragmented, initially more or less large Solid substances are fed in via a feed line Poured water into the reaction vessel (Figure 1), decrease in it and are in the actual process volume, the area between the tip of the electrode and the bottom of the vessel, exposed to the discharge taking place there.
  • the FRANKA principle see DE 195 34 232
  • the shock wave emanating from these current channels spreads into the environment and hits the Body in their path of propagation.
  • the discharge frequency is increased by the charging time for the capacitor bank limited, but is among them with known technical means freely adjustable. For example, in a prototype test driven with a discharge frequency of 10 Hz.
  • the suction device at its beginning is created by the discharge Shock wave in the process liquid and shaken by the fragments adhering to its network are released into the unloading volume sink back to with the following discharge again to be exposed to fragmentation.
  • the suction basket sits at the end of the suction device 2), in which the suspension sucked in from the process liquid is transported to the inlet into the sediment pan. The Particles settle there on the ground, and those of suspended matter Process liquid that has been freed finally becomes the reaction vessel again fed.

Abstract

The device is arranged in a reaction vessel filled with process liquid to a defined level and covered at its end by a suction basket enveloped in a mesh of opening size corresponding to the maximum grain size to be sucked up. The basket and mesh consist of a tough, shock-wave resistant material that prevent the passage of larger particles, which are returned to the fragmentation process.

Description

Die Erfindung betrifft eine Absaugeinrichtung in einer schockwellenerzeugenden Fragmentiereinrichtung zum Absaugen fragmentierten Gutes.The invention relates to a suction device in a shock wave generating Fragmentation device for suctioning fragmented Good.

In herkömmlichen Einrichtungen zum Zerkleinern, wie Backenbrecher, Prallbrecher, und Mahlen, wie Wälzmühlen und Schlagmühlen, können zerkleinerte Partikel nach Erreichen der vorgesehenen Grenzkorngröße nicht ohne weiteres aus der Suspension abgesaugt werden, weil beim Absaugen die Partikel die Siebgewebe zusetzen und verstopfen.In conventional crushing devices such as jaw crushers, Impact crusher, and grinding, such as roller mills and impact mills, can crushed particles after reaching the intended Limit grain size is not readily from the suspension be sucked off because when the particles are sucked off the sieve mesh clog and clog.

Bekannt sind Fragmentieranlagen, in denen über stromstarke Entladungen in einer Prozessflüssigkeit Schockwellen entlang den Entladungskanälen an dem zu fragmentierenden Gut entlang erzeugt werden, die dann auf das zu fragmentierende Gut, von außen schlagend, einwirken.Fragmentation systems are known in which over current Discharges in a process fluid along shock waves along the discharge channels along the material to be fragmented are generated, which are then based on the good to be fragmented striking outside, acting.

Eine energetisch optimierte Art der Fragmentierung wird in der DE 195 34 232 beschrieben. In ihr wird zu zertrümmerndes Gut gemäß dem erläuterten Prinzip FRANKA elektrischen Entladungen eines kapazitiven Speichers ausgesetzt, und zwar derart, dass durch die elektrischen Entladungen in den Entladungskanälen von der Hochspannungselektrodenspitze bis zum elektrisch leitenden Bodenbereich Schockwellen erzeugt werden, die auf die Umgebung belastend einwirken und dementsprechend konstruktive Maßnahmen für einen technisch brauchbaren Dauerbetrieb verlangen.An energetically optimized type of fragmentation is used in the DE 195 34 232 described. In it, goods become shattered according to the principle explained FRANKA electrical discharges of a capacitive memory, in such a way that due to the electrical discharges in the discharge channels from the high-voltage electrode tip to the electrically conductive one Shock waves are generated on the floor area Affect the environment and accordingly constructive Require measures for technically usable continuous operation.

Das in das Reaktionsgefäß eingefüllte, in der Prozessflüssigkeit absinkende Fragmentiergut wird im Reaktionsraum zwischen der Spitze der Hochspannungselektrode und dem Boden des Gefässes den elektrischen Entladungen eines kapazitiven Energiespeichers ausgesetzt und zertrümmert. Ab einer gewissen Korngröße werden Fraktionenteile durch die Entladung bzw. die Schockwelle in Folge in der Prozeßflüssigkeit aufgewirbelt und darin verteilt. Es entsteht eine Art Suspension. Nicht abgesaugte Fraktionsteile hingegen, sinken wieder ab und werden erneut der Entladung und damit der weiteren Zertrümmerung ausgesetzt.The one filled in the reaction vessel in the process liquid sinking fragmentation material is in the reaction space between the tip of the high voltage electrode and the bottom of the vessel the electrical discharges of a capacitive energy store exposed and smashed. From a certain grain size are fraction parts by the discharge or the Shock wave in a row whirled up in the process liquid and distributed in it. A kind of suspension is created. Not vacuumed Fraction parts, on the other hand, sink again and become again exposed to unloading and further destruction.

Entsprechend der Zuführung von zu zertrümmerndem Gut muss das fragmentierte Gut abgesogen werden. Für die weitere Prozessierung des fragmentierten Gutes ist es von Wichtigkeit, daß das Gut in Korngrößenbereiche aufgeteilt werden kann, ähnlich wie Kies bzw. Sand von Kieswerken.According to the supply of goods to be crushed, this has to be done fragmented goods are extracted. For further processing of the fragmented good it is important that the Can be divided well into grain size ranges, similar to Gravel or sand from gravel works.

Hieraus ergibt sich die Aufgabe, die der Erfindung zugrunde liegt, nämlich eine Absaugvorrichtung in die Prozessflüssigkeit zu hängen, mit der während des Prozessierens ständig bis zu maximal vorgegebenen Korngröße fragmentiertes Gut abgesogen werden kann.This results in the problem underlying the invention lies, namely a suction device in the process liquid to hang up with constantly during processing Extracted fragmented material to the maximum predetermined grain size can be.

Die Aufgabe wird durch eine Absaugvorrichtung gemäß dem Oberbegriff des Anspruchs 1 und seiner kennzeichnenden Merkmale gelöst.The task is performed by a suction device according to the preamble of claim 1 and its characteristic features solved.

Der Korb am Ende der Absaugvorrichtung, die in die Prozessflüssigkeit ragt, und das den Korb umhüllende Maschengewebe sind aus einem zähen, schockwellenresistenten Material. Die Maschenweite des Gewebes legt fest, bis zu welcher Korngröße in der Prozessflüssigkeit schwebende Partikel abgesaugt werden. Partikel mit darüber liegender Korngröße, Überkorn, werden in der Prozessflüssigkeit gehalten und durch die am Korb ankommende Schockwelle und deren loslösender Wirkung erneut in das Fragmentiervolumen zurückgezwungen, um dem folgenden Zertrümmerungsvorgang erneut ausgesetzt zu werden. The basket at the end of the suction device, which is in the process liquid protrudes, and the mesh covering the basket are made of a tough, shock wave resistant material. The Mesh size of the fabric determines up to which grain size particles suspended in the process liquid are sucked out. Particles with grain size above it, oversize held in the process liquid and by the on the basket incoming shock wave and its releasing effect again in the fragmentation volume forced back to the subsequent smashing process to be exposed again.

Je nach Prozessgut und dazu geeigneter Prozessflüssigkeit ist das Maschengewebe einerseits aus einem elektrisch leitfähigem Gewebe wie Edelstahl (Anspruch 2), das, wie gefordert über die mechanische Belastung hinaus chemisch resistent ist gegen die Prozessflüssigkeit und der darin gelösten Stoffe, oder aus einem dielektrischen Gewebe wie hochzähe Kunststoffe mit eben solchen mechanisch und chemisch resistenten Eigenschaften.Depending on the process material and suitable process liquid the mesh fabric on the one hand from an electrically conductive Tissue such as stainless steel (claim 2), which, as requested over the mechanical stress is also chemically resistant to the Process liquid and the substances dissolved in it, or from a dielectric fabrics such as tough plastic with such mechanically and chemically resistant properties.

Da solche Absaugkörbe schnell austauschbar sind und durch Absaugkörbe mit anderer umgebender Maschenweite am Absaugkorb ersetzt werden können, ist die Erzeugung schmalbandiger Korngrößenschüttungen leicht erzielbar. Bei jeder Stoßwellenerzeugung findet stets auch ein Freiklopfen des den Absaugkorb umgebenden Gitters statt. Dadurch erst ist ein kontinuierlicher Betrieb einer solchen Fragmentieranlage möglich, der nicht durch eine besondere Reinigungsphase unterbrochen werden muß.Because such suction baskets can be replaced quickly and by suction baskets with a different mesh size on the suction basket can be replaced is the production of narrow-band grain size fillings easy to achieve. With every shock wave generation there is always a knock on the surrounding of the suction basket Grid instead. This makes it a continuous one Operation of such a fragmentation system possible, but not must be interrupted by a special cleaning phase.

In der Zeichnung ist eine Fragmentieranlage skizziert, deren Zertrümmerungseinrichtung nach dem Prinzip der elektrischen Entladung eines kapazitiven Energiespeichers, dem FRANKA-Prinzip beispielsweise, arbeitet. Die Zeichnung zeigt in ihrer Figur 1 die elektrodynamische Fragmentierung im Prinzip und in ihrer Figur 2 den Reaktionsbehälter während des Prozesses.In the drawing, a fragmentation system is sketched, the Smashing device according to the principle of electrical Discharge of a capacitive energy store, the FRANKA principle for example, works. The drawing shows in her figure 1 the electrodynamic fragmentation in principle and in Figure 2 shows the reaction vessel during the process.

Das Reaktionsgefäß (Figur 2) ist teilweise mit Prozessflüssigkeit gefüllt, die hier Wasser ist, weil z.B. solche Stoffe wie Keramik, Glas und Minerale fragmentiert werden sollen. In die Flüssigkeit ragt die Hochspannungselektrode entlang der Gefäßachse und hält mit ihrer freien Stirn einen vorgegebenen Abstand zum Boden des Gefäß. Die Hochspannungselektrode ist mit einer Isolation ummantelt, damit nur vom Bereich ihrer Spitze die Entladungen zum Boden des Reaktionsgefäßes hin erfolgen. Der Boden ist hier gekrümmt, etwa kugelförmig, so daß sich das Prozessgut dort ansammelt und sicher der Entladung ausgesetzt ist. The reaction vessel (Figure 2) is partially with process liquid filled, which is water here, because e.g. such substances as Ceramics, glass and minerals are to be fragmented. In the The high-voltage electrode protrudes along the axis of the vessel and keeps a predetermined distance with her free forehead to the bottom of the vessel. The high voltage electrode is with an insulation, so only from the area of their tip the discharges take place towards the bottom of the reaction vessel. The bottom is curved, roughly spherical, so that the Process goods accumulate there and are safely exposed to unloading is.

Die zu fragmentierenden, zunächst noch mehr oder weniger großvolumigen Festkörpersubstanzen werden über eine Zuleitung unter Beimengung von Wasser in das Reaktionsgefäß geschüttet (Figur 1), sinken darin ab und sind im eigentlichen Prozessvolumen, dem Bereich zwischen Elektrodenspitze und Gefäßboden, der dort stattfindenden Entladung ausgesetzt. Nach dem FRANKA-Prinzip (siehe DE 195 34 232) werden die zu fragmentierenden Stücke durch die Entladungswege durch sie hindurch einerseits explodiert und andrerseits durch Schockwelleneinwirkung zerschlagen. Die dabei von diesen Stromkanälen ausgehende Schockwelle breitet sich in die Umgebung aus und schlägt auf die Körper in ihrem Ausbreitungsweg ein. Die Entladungsfreuquenz wird durch die Aufladezeit für die Kondensatorbank nach oben begrenzt, ist aber darunter mit bekannten technischen Mitteln beliebig einstellbar. In einem Prototypversuch wurde beispielsweise mit einer Entladefrequenz von 10 Hz gefahren.The ones to be fragmented, initially more or less large Solid substances are fed in via a feed line Poured water into the reaction vessel (Figure 1), decrease in it and are in the actual process volume, the area between the tip of the electrode and the bottom of the vessel, exposed to the discharge taking place there. According to the FRANKA principle (see DE 195 34 232) are those to be fragmented Pieces through the discharge paths through them on the one hand explodes and, on the other hand, is smashed by shock waves. The shock wave emanating from these current channels spreads into the environment and hits the Body in their path of propagation. The discharge frequency is increased by the charging time for the capacitor bank limited, but is among them with known technical means freely adjustable. For example, in a prototype test driven with a discharge frequency of 10 Hz.

Die Absaugvorrichtung an ihrem Beginn, insbesondere der Saugkorb dort, wird durch die bei der Entladung entstehende Schockwelle in der Prozessflüssigkeit gerüttelt und von den an seinem Netz haftende Fragmente befreit, die dann in das Entladevolumen zurücksinken, um mit der folgenden Entladung erneut der Fragmentierung ausgesetzt zu werden.The suction device at its beginning, especially the suction basket there, is created by the discharge Shock wave in the process liquid and shaken by the fragments adhering to its network are released into the unloading volume sink back to with the following discharge again to be exposed to fragmentation.

Die Absaugkorb sitzt am Ende der Absaugvorrichtung (Anspruch 2), in dem die aus der Prozessflüssigkeit angesaugte Suspension zum Einlauf in die Sedimentwanne transportiert wird. Die Partikel setzen sich dort am Boden ab, und die von Schwebstoffen befreite Prozeßflüssigkeit wird schließlich wieder dem Reaktionsgefäß zugeführt.The suction basket sits at the end of the suction device 2), in which the suspension sucked in from the process liquid is transported to the inlet into the sediment pan. The Particles settle there on the ground, and those of suspended matter Process liquid that has been freed finally becomes the reaction vessel again fed.

Claims (3)

Absaugeinrichtung in einer gepulst betriebenen Fragmentiereinrichtung zum Absaugen fragmentierten Gutes, bestehend aus: aus einem Reaktionsgefäß, das bis zu einem vorgegebenen Niveau mit einer Prozessflüssigkeit gefüllt ist, in die zu fragmentierendes Gut eingeleitet wird und einem pulsförmigen Zertrümmerungsvorgang darin mindestens einmal ausgesetzt ist, um danach als in der Prozessflüssigkeit aufgewirbeltes, fragmentiertes Gut daraus über eine Absaugvorrichtung abgesogen zu werden, dadurch gekennzeichnet, dass die Absaugvorrichtung im Reaktionsgefäß an ihrem Endbereich von einem Maschengewebe umhüllten Absaugkorb umgeben ist, wobei die Maschenweite der maximal abzusaugenden Korngröße, dem Unterkorn, entspricht, der Korb und das Maschengewebe aus einem zähen, schockwellenresistenten Material sind, welches Fragmente darüber liegender Korngröße, das Überkorn, am Durchkommen hindert, wodurch die dann durch die Einwirkung der dort auftreffenden Schockwelle erneut in das Fragmentiervolumen zurücksinken und dem folgenden Zertrümmerungsvorgang erneut ausgesetzt werden.Suction device in a pulsed fragmentation device for suctioning fragmented material, consisting of: a reaction vessel which is filled to a predetermined level with a process liquid, into which the material to be fragmented is introduced and which is subjected to a pulsed smashing process at least once, after which it is called fragmented material whirled up in the process liquid to be sucked out of it via a suction device, characterized in that the suction device in the reaction vessel is surrounded at its end region by a suction mesh-covered suction basket, the mesh size corresponding to the maximum grain size to be extracted, the undersize, the basket and the mesh fabric is made of a tough, shock wave resistant material, which prevents fragments of grain size above, the oversize, from passing through, which then by the action of the shock wave there again in the Fall back fragmentation volume and be exposed to the following smashing process again. Absaugeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass Maschengewebe aus elektrisch leitfähigem Material und chemisch inert gegenüber der Prozessflüssigkeit ist.Suction device according to claim 1, characterized in that mesh fabric made of electrically conductive material and is chemically inert to the process liquid. Absaugeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass Maschengewebe aus dielektrischem Material und chemisch inert gegenüber der Prozessflüssigkeit ist.Suction device according to claim 1, characterized in that mesh fabric made of dielectric material and is chemically inert to the process liquid.
EP02004850A 2001-03-24 2002-03-04 Process of selectively separating particles from a suspension Expired - Lifetime EP1243339B1 (en)

Applications Claiming Priority (2)

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DE10114550 2001-03-24
DE10114550 2001-03-24

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EP1243339A2 true EP1243339A2 (en) 2002-09-25
EP1243339A3 EP1243339A3 (en) 2003-11-26
EP1243339B1 EP1243339B1 (en) 2005-12-07

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Cited By (4)

* Cited by examiner, † Cited by third party
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WO2003022444A1 (en) * 2001-09-10 2003-03-20 Forschungszentrum Karlsruhe Gmbh Method and reactor for the non-thermal decomposition and pasteurisation of organic process materials by electroporation
WO2013053066A1 (en) * 2011-10-10 2013-04-18 Selfrag Ag Method for fragmenting and/or pre-weakening material using high-voltage discharges
CN105764614A (en) * 2013-10-25 2016-07-13 泽尔弗拉格股份公司 Method of fragmenting and/or weakening material by means of high voltage discharges
CN105848785A (en) * 2013-10-25 2016-08-10 泽尔弗拉格股份公司 Method for fragmenting and/or pre-weakening material by means of high-voltage discharges

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DE19534232A1 (en) 1995-09-15 1997-03-20 Karlsruhe Forschzent Process for comminuting and crushing solids conglomerated from non-metallic or partially metallic components and for comminuting homogeneous non-metallic solids

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003022444A1 (en) * 2001-09-10 2003-03-20 Forschungszentrum Karlsruhe Gmbh Method and reactor for the non-thermal decomposition and pasteurisation of organic process materials by electroporation
MD3613C2 (en) * 2001-09-10 2009-02-28 Forschungszentrum Karlsruhe Gmbh Method and reactor for non-thermal decomposition and pasteurization of organic materials by electroporation
US7691324B2 (en) 2001-09-10 2010-04-06 Südzucker AG Method and reactor for the non-thermal decomposition and pasteurization of organic process materials by electroporation
WO2013053066A1 (en) * 2011-10-10 2013-04-18 Selfrag Ag Method for fragmenting and/or pre-weakening material using high-voltage discharges
CN103857471A (en) * 2011-10-10 2014-06-11 泽尔弗拉格股份公司 Method For Fragmenting And/Or Pre-Weakening Material Using High-Voltage Discharges
RU2568747C1 (en) * 2011-10-10 2015-11-20 Зельфраг Аг Method of crushing and/or reduction of strength of material using high-voltage discharges
CN103857471B (en) * 2011-10-10 2016-04-13 泽尔弗拉格股份公司 For smashing and/or weaken in advance the method for material by electrion
AU2011379145B2 (en) * 2011-10-10 2016-10-20 Selfrag Ag Method for fragmenting and/or pre-weakening material using high-voltage discharges
US10029262B2 (en) 2011-10-10 2018-07-24 Selfrag Ag Method of fragmenting and/or weakening of material by means of high voltage discharges
CN105764614A (en) * 2013-10-25 2016-07-13 泽尔弗拉格股份公司 Method of fragmenting and/or weakening material by means of high voltage discharges
CN105848785A (en) * 2013-10-25 2016-08-10 泽尔弗拉格股份公司 Method for fragmenting and/or pre-weakening material by means of high-voltage discharges
CN105848785B (en) * 2013-10-25 2018-07-10 泽尔弗拉格股份公司 For being smashed and/or the method for pre-weakened material by means of electrion

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ATE311939T1 (en) 2005-12-15
DE50205148D1 (en) 2006-01-12
EP1243339B1 (en) 2005-12-07
EP1243339A3 (en) 2003-11-26

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