EP2106301B1 - Classifying device for classifying granular material and circulating grinding plant incorporating such a classifying device - Google Patents

Classifying device for classifying granular material and circulating grinding plant incorporating such a classifying device Download PDF

Info

Publication number
EP2106301B1
EP2106301B1 EP07801812.4A EP07801812A EP2106301B1 EP 2106301 B1 EP2106301 B1 EP 2106301B1 EP 07801812 A EP07801812 A EP 07801812A EP 2106301 B1 EP2106301 B1 EP 2106301B1
Authority
EP
European Patent Office
Prior art keywords
sifter
sifting
stock
mill
cone
Prior art date
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.)
Not-in-force
Application number
EP07801812.4A
Other languages
German (de)
French (fr)
Other versions
EP2106301A2 (en
Inventor
Siegfried Strasse
Albert Süsseger
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.)
KHD Humboldt Wedag AG
Original Assignee
KHD Humboldt Wedag AG
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
Application filed by KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Publication of EP2106301A2 publication Critical patent/EP2106301A2/en
Application granted granted Critical
Publication of EP2106301B1 publication Critical patent/EP2106301B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B07B4/04—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall in cascades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
    • B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • 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
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents

Definitions

  • the invention relates to a sifter for sifting granular material, with a arranged within a classifier static cascade classifier as beware, the sichtluftströmungs rock another sifter is followed as Nachsichter, with inlets and outlets for conveyluft, reformgut, fines and coarse material.
  • a sifter in which within a classifier housing a static cascade classifier without moving components and a dynamic rod basket sifter with rotating rod basket are assembled into a compact unit.
  • the classifying device is switched on in a grinding circuit with a comminution roller mill or roller press.
  • the circulated material which contains Gutagglomerate as pressing slugs, is introduced at the top of the acting as a custodial cascade classifier.
  • the Gutagglomerate be resolved and the transversely to the falling Gutullschleier by the stair cascade flowing reform Kunststoff sifts the fine grain or medium grain fraction, while the coarse grain fraction is recirculated to the roller press, so that the Nachsichter downstream Stabkorbsichter with his rotating turbo elements is no longer burdened with coarse particles.
  • the fine grain fraction is using of the digestion leaving the classifying air stream discharged from the grinding circuit.
  • the invention has for its object to provide a compact built sifter of the type mentioned and a Kreislaufmahlstrom with such a sifting device, with respect to Throughput but also with regard to specific energy requirements can overcome previous limits.
  • a preferred classifying device is considered round in plan view, namely it consists of two packets spaced one above the other and concentrically arranged circular or polygonal conical rings, namely a radially outer stepping ring package and a radially inner preparefluten ring package , Between the radially outer and the radially inner ring packet the viewing zone is formed, which has the shape of a conical-cone stump in circular conical rings, in such a way that the large diameter of the viewing zone at the top and the small diameter of the viewing zone at the bottom of the ring pacts.
  • a post-siphon arranged the loaded with the fines view air.
  • the classifying air itself is introduced into the classifier housing via one or more circumferentially distributed supply ports, travels radially to tangentially from outside to inside the conical ring packets and the classifying zone, and is then withdrawn laden with the fines from the integrated downstream trimmers.
  • the incorporated indulgent can be a static air classifier.
  • the obdurator can also be a dynamic rod basket sifter with a rod axis rotatable about a vertical axis with distributed over the rotor circumference arranged turbo elements.
  • the coarse grain fraction discharge opening of the sifter is advantageously arranged above the crop feed of the mill.
  • the mill itself may be a high-pressure roller press for comminution grinding with mechanical promotion of the pressing slugs to the reformguteintragsö Maschinenen the static cascade classifier.
  • the mill may also be a roller mill or roller mill or another mill with promotion of the coarse grain fraction leaving the mill to the reformguteintragsö Samuelen the static cascade classifier.
  • the static cascade screen part first of all has the advantage that there are good agglomerates coming out of the mill, such as, for example.
  • B. pressing slugs can be disagglomerated using gravity virtually without power supply before the actual sighting begins.
  • the height of the conical ring packages of the static classifying element is at least 5 m.
  • Fig. 1 is in the lower part of a conical sortergepuruses 10 a static cascade classifier as a precautionary and arranged in the upper part of a static Beerstromsichter as a defaulter.
  • the static cascade classifier of two packages each spaced above and concentrically arranged conical frustum cone conical rings, namely from a radially outer staircase cone ring package 11 and a radially inner preparefluten Konusringvers 12.
  • a Visual zone 13 is also formed in the form of a conical-shaped stump whose large diameter D is at the top and whose small diameter d is at the bottom of the ring packages, where D is significantly greater than d.
  • the material to be sighted which may also contain Gutagglomerate as the pressing slugs a Gutbettzerklein mecanics roller press introduced.
  • this feed material 16 the fresh material and / or can be recirculated in a Kreislaufmahlstrom Good, by gravity from top to bottom on the steps of the radially outer conical ring packet 11 with Impact of the goods in particular on these outer conical rings and with Gutummélzung, the Gutagglomerate be deagglomerated, approximately in the cross flow through the inserted into the classifier housing 10 of the static cascade classifier air stream 17 vorgesichtet, and effectively dried when using hot gas instead of cold air.
  • the coarse grain fraction 18, which leaves the cascade peeler below through the discharge opening 15, is generally recirculated to the grinding mill mill with the separator inserted.
  • the Nachsichter with exit of the fine material laden with the visual air is arranged.
  • the classifying air / fine material flow 19 is supplied to a separator, not shown in the drawing, for the purpose of separating off the fine fine material, the exhaust air of which can again be recirculated into the static cascade classifier as part of the air stream 17.
  • Fig. 1 To Fig. 1 is the above installed inside the cascade classifier, a static Heilstromsichter without moving components.
  • Fig. 1 flows around the circumference distributed exhaust air 20a, 20b, etc. of the cascade classifier, which in this exhaust air to the prospect of coarse grain fraction a middle grain fraction and the fine grain fraction is suspended, from bottom to top in the annulus between the inner Gutroterichter 21 and the outer housing of the static Gutstromsichters a Due to the flow deflection, the suspension is separated into a medium-grain fraction 23, which is transported by gravity on the inside of the hopper 21 down to a central Gutaustragsö réelle 24 of the classifier, while the in the classifying air stream 19 remaining fine crown fraction is withdrawn via the central deflecting hood 25 from the classifier.
  • the center grain fraction 26 leaving the sifter means may be fed to a separate use. However, it is also possible to recirculate the coarse grain fraction 18 and the middle grain fraction 26 of the classifying device if necessary in a summarized manner for the purpose of feeding the mill of a grinding cycle.
  • Fig. 2 is not integrated in the interior of the radially inner Konusringwees 12 of the static cascade classifier indulgence as at Fig. 1 a static Lucasstromsichter without moving parts, but a dynamic Stabkorbsichter whose rotatably mounted, provided on the rotor circumference with turbo elements rod basket 27 with vertical axis of rotation 28 is disposed concentrically within the vane ring 22 at the top of the classifier. At the periphery of the rotating rod basket 27 is in the intermediate region to the vane ring 22 which also in Fig.
  • the separator device described above is switched into a grinding circuit with a roller mill 29, in such a way that the discharge openings 15 and 24 for discharging the coarse grain fraction 18 and the middle grain fraction 26 from the classifier are arranged above the crop feed of the roller mill.
  • This mill has a horizontal grinding table 30, which is set in rotation by a drive motor 31 via a gear.
  • the grinding stock to be placed on the circular grinding track of the grinding table 30 is used by several over the circumference distributed grinding rollers 32 rolled over and ground.
  • the roller mill 29 can work without air flow.
  • Theühlenaustragsgut 33 is via a conveyor 34 such. B. bucket elevator to the Guteintragsö réelleen 14 a, 14 b, etc. of the cascade viewer part of the classifier transported, in which also the fresh material 35 is introduced, for. As cement raw material, cement clinker or the like.
  • the fresh material 35 can in principle be introduced at any point in the grinding circuit. If the fresh material 35 moist, it is introduced with particular advantage to the Guteintragsö réelleen 14a, 14b, etc. of the cascade classifier together with the coming of the roller mill mill 32 regrind in the grinding circuit. In this way, the moist fresh material is dried in the cascade classifier, in particular with hot gas and pre-classified, so that in the roller mill 32 only dry ground material passes and the roller mill can work without air flow or gas flow.
  • Fig. 3 is different from Fig. 2 instead of using a roller mill, the separator device is combined with a comminution roller press or roller press 36, whose Austragsgut contains 37 so-called squeegees, which are particularly effectively disagglomerated and sighted after recirculation in Kaskadensicht part of the sifter.
  • the coarse grain fraction / middle grain fraction discharge 38 of the classifier is located immediately above the hopper shaft 39 of the roller press 36.
  • the sifter is after Fig. 3 combined with a single roller press 36. But it can also be combined with several such roller presses 36 because of their high throughput.

Description

Die Erfindung betrifft eine Sichtereinrichtung zum Sichten von körnigem Gut, mit einem innerhalb eines Sichtergehäuses angeordneten statischen Kaskadensichter als Vorsichter, dem sichtluftströmungsseitig ein weiterer Sichter als Nachsichter nachgeschaltet ist, mit Ein- und Auslässen für Sichtluft, Sichtgut, Feingut und Grobgut.The invention relates to a sifter for sifting granular material, with a arranged within a classifier static cascade classifier as beware, the sichtluftströmungsseitig another sifter is followed as Nachsichter, with inlets and outlets for Sichtluft, Sichtgut, fines and coarse material.

Aus der DE 42 23 762 A1 ist eine Sichtereinrichtung bekannt, bei der innerhalb eines Sichtergehäuses ein statischer Kaskadensichter ohne bewegte Bauteile und ein dynamischer Stabkorbsichter mit rotierendem Stabkorb zu einer kompakten Baueinheit zusammengebaut sind. Dabei ist die Sichtereinrichtung in einen Mahlkreislauf mit einer Gutbettzerkleinerungs-Walzenmühle bzw. Rollenpresse eingeschaltet. Das im Kreislauf geführte Gutmaterial, das Gutagglomerate wie Pressschülpen enthält, wird oben in den als Vorsichtungskammer wirkenden Kaskadensichter eingeführt. Beim Fall des Aufgabegutes über die Treppenstufen des Kaskadensichters werden die Gutagglomerate aufgelöst und die quer zum fallenden Gutmaterialschleier durch die Treppenkaskade strömende Sichtluft sichtet die Feinkorn- bzw. Mittelkornfraktion aus, während die Grobkornfraktion zur Rollenpresse rezirkuliert wird, so dass der als Nachsichter nachgeschaltete Stabkorbsichter mit seinen rotierenden Turboelementen nicht mehr mit Grobkornbestandteilen belastet wird. Die Feinkornfraktion wird mittels des den Nachsichter verlassenden Sichtluftstromes aus dem Mahlkreislauf ausgeschleust.From the DE 42 23 762 A1 a sifter is known in which within a classifier housing a static cascade classifier without moving components and a dynamic rod basket sifter with rotating rod basket are assembled into a compact unit. In this case, the classifying device is switched on in a grinding circuit with a comminution roller mill or roller press. The circulated material, which contains Gutagglomerate as pressing slugs, is introduced at the top of the acting as a custodial cascade classifier. In the case of the feed material on the steps of the cascade classifier, the Gutagglomerate be resolved and the transversely to the falling Gutullschleier by the stair cascade flowing Sichtluft sifts the fine grain or medium grain fraction, while the coarse grain fraction is recirculated to the roller press, so that the Nachsichter downstream Stabkorbsichter with his rotating turbo elements is no longer burdened with coarse particles. The fine grain fraction is using of the digestion leaving the classifying air stream discharged from the grinding circuit.

Infolge seiner rechteckschachtförmigen Bauweise sind dem bekannten statischen Kaskadensichter, der durch die Patentanmelderin auch mit dem Namen "V-Sichter" bekannt geworden ist, bauliche Grenzen gesetzt, welche die Durchsatzleistung der Sichtereinrichtung und damit auch der Kreislaufmahlanlage begrenzen können.As a result of its rectangular shaft design, the known static cascade classifier, which has become known by the patent applicant with the name "V-classifier", set structural limits that can limit the throughput of the classifier and thus also the Kreislaufmahlanlage.

Andererseits ist z. B. aus der DE-AS 1 607 536 ein oberhalb der Mahlschüssel einer Walzenschüsselmühle angeordneter Luftstromsichter bekannt, mit einem Satz übereinander und konzentrisch zueinander angeordneter statischer Konusringe, denen das Aufgabegut nicht von oben und getrennt von der Sichtluft aufgegeben wird, sondern das zu sichtende Aufgabegut muss hierbei bereits dispergiert in der Sichtluft von unten in den Ringraum zwischen dem Sichtergehäuse und den Konusringen eingeführt werden, bei deren Durchströmung und Strömungsumlenkung die Sichtgutsuspension eine Grobgutvorabscheidung erfährt, während die in der Suspension enthaltene Feinkornfraktion über einen zentral in der Sichtereinrichtung rotierenden Stabkorb und über ein Saugzuggebläse abgezogen wird. Die bekannte Sichtereinrichtung mit seinem dort offenbarten statischen Luftstromsichterteil mit dem pneumatischen Transport des in der Sichtluft suspendierten Sichtgutes wäre zur Sichtung von Sichtgut, das Gutagglomerate wie z. B. die vorgenannten Pressschülpen einer Gutbettzerkleinerungs-Hochdruckwalzenpresse enthält, gar nicht geeignet.On the other hand, z. B. from the DE-AS 1 607 536 a above the grinding bowl of a roller mill arranged airflow classifier known with a set of superimposed concentric and concentric conical rings to which the feed material is not abandoned from above and separated from the classifying air, but the object to be viewed feed must here already dispersed in the classifying air from below the annulus between the classifier housing and the conical rings are introduced, in the flow and flow deflection of the Sichtgutsuspension undergoes Grobgutvorabscheidung, while the fine grain fraction contained in the suspension is withdrawn via a centrally rotating in the sifter rod and a draft fan. The well-known sifter with his there revealed static Luftstromsichterteil with the pneumatic transport of the suspended in the classifying air visual material would be for the sighting of Sichtgut, the Gutagglomerate such. B. contains the aforementioned press slugs a Gutbettzerkleinerungs high pressure roller press, not at all suitable.

Aus der DE 455864 C ist eine Sichtereinrichtung gemäß dem Oberbegriff des Anspruchs 1 bekannt.From the DE 455864 C a sifter device according to the preamble of claim 1 is known.

Der Erfindung liegt die Aufgabe zugrunde, eine kompakt gebaute Sichtereinrichtung der eingangs genannten Art sowie eine Kreislaufmahlanlage mit einer solchen Sichtereinrichtung zu schaffen, die hinsichtlich Durchsatzleistung aber auch hinsichtlich spezifischen Energiebedarf bisherige Grenzen überwinden können.The invention has for its object to provide a compact built sifter of the type mentioned and a Kreislaufmahlanlage with such a sifting device, with respect to Throughput but also with regard to specific energy requirements can overcome previous limits.

Diese Aufgabe wird gemäß der Erfindung mit einer Sichtereinrichtung mit den Merkmalen des Anspruchs 1 und mit einer Kreislaufmahlanlage mit den Merkmalen des Anspruchs 5 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den jeweiligen Unteransprüchen angegeben.This object is achieved according to the invention with a classifying device with the features of claim 1 and with a Kreislaufmahlanlage with the features of claim 5. Advantageous embodiments of the invention are specified in the respective subclaims.

Im Gegensatz zum bisher bekannten rechteckschachförmigen statischen Kaskadensichter ist eine bevorzugte Sichtereinrichtung in Draufsicht betrachtet rund, nämlich sie besteht aus zwei Paketen jeweils beabstandet übereinander und konzentrisch zueinander angeordneter kreisrunder oder polygonaler Konusringe, nämlich aus einem radial äußeren Treppenstufen-Ringpaket und einem radial inneren Sichtfluten-Ringpaket. Zwischen dem radial äußeren und dem radial inneren Ringpaket ist die Sichtzone gebildet, die bei kreisrunden Konusringen die Gestalt eines Kegelmantelstumpfes hat, und zwar so, dass der große Durchmesser der Sichtzone an der Oberseite und der kleine Durchmesser der Sichtzone an der Unterseite der Ringpakte liegt. Um die Oberseite der Sichtzone mit dem großen Durchmesser sind mehrere Sichtguteintragsöffnungen um den Umfang verteilt angeordnet, während an der Unterseite der Sichtzone mit dem kleineren Durchmesser wenigstens eine Grobkornfraktions-Austragsöffnung angeordnet ist. Sowohl die Treppenstufen des radial äußeren Ringpakets als auch die Sichtfluten des radial inneren Ringpakets des Kaskadensichters sind als Konusringe jeweils schräg nach unten in Richtung zur Grobkornfraktions-Austragsöffnung geneigt.In contrast to the previously known rectangular chess-shaped static cascade classifier, a preferred classifying device is considered round in plan view, namely it consists of two packets spaced one above the other and concentrically arranged circular or polygonal conical rings, namely a radially outer stepping ring package and a radially inner Sichtfluten ring package , Between the radially outer and the radially inner ring packet the viewing zone is formed, which has the shape of a conical-cone stump in circular conical rings, in such a way that the large diameter of the viewing zone at the top and the small diameter of the viewing zone at the bottom of the ring pacts. Several Sichtguteintragsöffnungen around the circumference are arranged around the top of the viewing zone with the large diameter, while at the bottom of the viewing zone with the smaller diameter at least one coarse grain fraction discharge opening is arranged. Both the steps of the radially outer ring package and the visual floods of the radially inner ring package of the cascade classifier are each inclined obliquely downward as cone rings in the direction of the coarse grain fraction discharge opening.

Außerdem ist im Raum innerhalb des radial inneren Ringpakets des statischen Kaskadensichters, wobei dieser Raum eine auf die Spitze gestellte Kegelkonfiguration hat, ein Nachsichter mit Austritt der mit dem Feingut beladenen Sichtluft angeordnet. Die Sichtluft selbst wird über eine oder mehrere um den Umfang verteilte Zuführungsöffnungen in das Sichtergehäuse eingeführt, durchströmt radial bis tangential von außen nach innen die Konusringpakete und die Sichtzone und wird dann beladen mit dem Feingut aus dem integrierten nachgeschalteten Nachsichter abgezogen.In addition, in the space within the radially inner ring package of the static cascade classifier, this space having an apexed cone configuration, a post-siphon arranged the loaded with the fines view air. The classifying air itself is introduced into the classifier housing via one or more circumferentially distributed supply ports, travels radially to tangentially from outside to inside the conical ring packets and the classifying zone, and is then withdrawn laden with the fines from the integrated downstream trimmers.

Bei der erfindungsgemäßen Sichtereinrichtung kann der inkorporierte Nachsichter ein statischer Luftstromsichter sein. Der Nachsichter kann aber auch ein dynamischer Stabkorbsichter mit um eine vertikale Achse drehbarem Stabkorb mit über den Rotorumfang verteilt angeordneten Turboelementen sein.In the case of the classifying device according to the invention, the incorporated indulgent can be a static air classifier. The obdurator can also be a dynamic rod basket sifter with a rod axis rotatable about a vertical axis with distributed over the rotor circumference arranged turbo elements.

Bei einer entsprechenden Kreislaufmahlanlage mit Mühle und erfindungsgemäßer Sichtereinrichtung ist die Grobkornfraktions-Austragsöffnung der Sichtereinrichtung mit Vorteil oberhalb der Gutaufgabe der Mühle angeordnet. Die Mühle selbst kann eine Hochdruck-Walzenpresse zur Gutbettzerkleinerung sein mit mechanischer Förderung der Pressschülpen zu den Sichtguteintragsöffnungen des statischen Kaskadensichters. Die Mühle kann aber auch eine Wälzmühle bzw. Walzenschüsselmühle oder eine noch andere Mühle sein mit Förderung der die Mühle verlassenden Grobkornfraktion zu den Sichtguteintragsöffnungen des statischen Kaskadensichters.In a corresponding Kreislaufmahlanlage with mill and inventive sifter, the coarse grain fraction discharge opening of the sifter is advantageously arranged above the crop feed of the mill. The mill itself may be a high-pressure roller press for comminution grinding with mechanical promotion of the pressing slugs to the Sichtguteintragsöffnungen the static cascade classifier. However, the mill may also be a roller mill or roller mill or another mill with promotion of the coarse grain fraction leaving the mill to the Sichtguteintragsöffnungen the static cascade classifier.

Bei der erfindungsgemäßen Sichtereinrichtung bietet der statische Kaskadensichterteil zunächst einmal den Vorteil, dass dort aus der Mühle kommende Gutagglomerate wie z. B. Pressschülpen unter Ausnutzung der Schwerkraft praktisch ohne Energiezufuhr desagglomeriert werden können, bevor die eigentliche Sichtung einsetzt. Um die Wirkung des Desagglomerierens des Aufgabegutes herbeizuführen, beträgt bei einer bevorzugten Sichtereinrichtung die Höhe der Konusringpakete des statischen Sichterteils wenigstens 5 m.In the case of the classifying device according to the invention, the static cascade screen part first of all has the advantage that there are good agglomerates coming out of the mill, such as, for example. B. pressing slugs can be disagglomerated using gravity virtually without power supply before the actual sighting begins. In order to bring about the effect of deagglomerating the feedstock, in a preferred classifying device the height of the conical ring packages of the static classifying element is at least 5 m.

Gleichzeitig wird durch die Konusringbauweise des statischen Sichterteils in der Weise, dass der Durchmesser der Konusringe an der Oberseite der Ringpakete mit den um den Umfang verteilten Sichtguteintragsöffnungen deutlich größer ist als der entsprechende Durchmesser an der Unterseite der Konusringpakete, die Möglichkeit zu viel größeren Durchsatzleistungen der erfindungsgemäßen Sichtereinrichtung eröffnet, ohne dass dies einen erhöhten Energieeintrag in den statischen Kaskadensichter erforderlich machen würde. Hieraus resultiert auch der niedrige spezifische Energiebedarf der erfindungsgemäßen Sichtereinrichtung sowie der damit ausgestatteten Kreislaufmahlanlage.At the same time, the conical ring construction of the static classifier part in such a way that the diameter of the cone rings at the top of the ring packages with the Sichtguteintragsöffnungen distributed around the circumference is significantly larger than the corresponding diameter at the bottom of Konusringpakete, the possibility of much greater throughputs of the invention Classifying device opened without this would require an increased energy input in the static cascade classifier. This also results in the low specific energy consumption of the classifying device according to the invention and the Kreislaufmahlanlage equipped therewith.

Die Erfindung und deren weitere Merkmale und Vorteile werden anhand der in den Figuren schematisch dargestellten Ausführungsbeispiele näher erläutert.The invention and its further features and advantages will be explained in more detail with reference to the embodiments schematically illustrated in the figures.

Es zeigt:

Fig. 1:
im Vertikalschnitt eine erste Ausführungsform einer erfindungsgemäßen Sichtereinrichtung mit statischem Kaskadensichter als Vorsichter und statischem Luftstromsichter als Nachsichter,
Fig. 2:
eine Kreislaufmahlanlage mit einer Walzenschüsselmühle und mit einer zweiten Ausführungsform der Sichtereinrichtung ebenfalls im Vertikalschnitt und teilweise in Seitenansicht,
Fig. 3:
die Sichtereinrichtung der Fig. 2 in Seitenansicht, eingeschaltet in einen Mahlkreislauf mit einer Gutbettzerkleinerungs-Rollenpresse.
It shows:
Fig. 1:
in vertical section a first embodiment of a separator device according to the invention with static cascade classifier as a precautionary and static air classifier as a hindrance,
Fig. 2:
a Kreislaufmahlanlage with a roller mill and with a second embodiment of the classifier also in vertical section and partially in side view,
3:
the classifier of the Fig. 2 in side view, switched into a grinding circuit with a Gutbettzerkleinerungs roller press.

Nach Fig. 1 ist im unteren Teil eines kegelförmigen Sichtergehäuses 10 ein statischer Kaskadensichter als Vorsichter und im oberen Teil ein statischer Luftstromsichter als Nachsichter angeordnet. Dabei besteht der statische Kaskadensichter aus zwei Paketen jeweils beabstandet übereinander und konzentrisch zueinander angeordneter kegelmantelstumpfförmiger Konusringe, nämlich aus einem radial äußeren Treppenstufen-Konusringpaket 11 und einem radial inneren Sichtfluten-Konusringpaket 12. Zwischen dem radial äußeren und dem radial inneren Ringpaket 11, 12 ist eine Sichtzone 13 gebildet ebenfalls in Gestalt eines Kegelmantelstumpfes, dessen großer Durchmesser D an der Oberseite und dessen kleiner Durchmesser d an der Unterseite der Ringpakete liegt, wobei D deutlich größer als d ist.To Fig. 1 is in the lower part of a conical Sichtergehäuses 10 a static cascade classifier as a precautionary and arranged in the upper part of a static Luftstromsichter as a defaulter. In this case, the static cascade classifier of two packages each spaced above and concentrically arranged conical frustum cone conical rings, namely from a radially outer staircase cone ring package 11 and a radially inner Sichtfluten Konusringpaket 12. Between the radially outer and the radially inner ring package 11, 12 is a Visual zone 13 is also formed in the form of a conical-shaped stump whose large diameter D is at the top and whose small diameter d is at the bottom of the ring packages, where D is significantly greater than d.

Um die Oberseite der Sichtzone 13 mit dem großen Durchmesser D sind mehrere Sichtguteintragsöffnungen 14a, 14b etc. um den Umfang verteilt angeordnet, während an der Unterseite der Sichtzone mit dem kleineren Durchmesser d wenigstens eine Grobkornfraktions-Austragsöffnung 15 angeordnet ist. Sowohl die Treppenstufen des radial äußeren Konusringpakets 11 als auch die für die Sichtluft schräg nach oben ansteigenden Sichtfluten des radial inneren Ringpakets 12 des Kaskadensichters sind als Konusringe jeweils schräg nach unten in Richtung zur Grobkornfraktions-Austragsöffnung 15 geneigt.Several Sichtguteintragsöffnungen 14a, 14b etc. are distributed around the circumference around the top of the viewing zone 13 with the large diameter D, while at least a coarse grain fraction discharge opening 15 is arranged on the underside of the viewing zone with the smaller diameter d. Both the steps of the radially outer Konusringpakets 11 and the obliquely upwardly for the Sichtluft upward floods of the radially inner ring package 12 of the cascade classifier are inclined as cone rings each obliquely downward toward the coarse grain fraction discharge opening 15.

In die Eintragsöffnungen 14a, 14b wird das zu sichtende Gut, welches auch Gutagglomerate wie die Pressschülpen einer Gutbettzerkleinerungs-Rollenpresse enthalten kann, eingeführt. Beim Fall dieses Aufgabegutes 16, das Frischgut und/oder in einer Kreislaufmahlanlage rezirkuliertes Gut sein kann, durch Schwerkraft von oben nach unten über die Treppenstufen des radial äußeren Konusringpaketes 11 mit Aufschlag des Gutes insbesondere an diesen äußeren Konusringen und mit Gutumwälzung, werden die Gutagglomerate desagglomeriert, etwa im Querstrom durch den in das Sichtergehäuse 10 des statischen Kaskadensichters eingeführten Luftstrom 17 vorgesichtet, und bei Einsatz von Heißgas statt Kaltluft wirkungsvoll getrocknet. Die Grobkornfraktion 18, welche durch die Austragsöffnung 15 den Kaskadensichter unten verlässt, wird in der Regel zur Mühle des Mahlkreislaufes mit dem eingesetzten Sichter rezirkuliert.Into the entry openings 14a, 14b, the material to be sighted, which may also contain Gutagglomerate as the pressing slugs a Gutbettzerkleinerungs roller press introduced. In the case of this feed material 16, the fresh material and / or can be recirculated in a Kreislaufmahlanlage Good, by gravity from top to bottom on the steps of the radially outer conical ring packet 11 with Impact of the goods in particular on these outer conical rings and with Gutumwälzung, the Gutagglomerate be deagglomerated, approximately in the cross flow through the inserted into the classifier housing 10 of the static cascade classifier air stream 17 vorgesichtet, and effectively dried when using hot gas instead of cold air. The coarse grain fraction 18, which leaves the cascade peeler below through the discharge opening 15, is generally recirculated to the grinding mill mill with the separator inserted.

Im Raum innerhalb des radial inneren Konusringpakets 12 des statischen Kaskadensichters ist der Nachsichter mit Austritt der mit dem Feingut beladenen Sichtluft angeordnet. Der Sichtluft/Feingutstrom 19 wird zwecks Abtrennung des fertig feinen Feingutes einem in der Zeichnung nicht dargestellten Abscheider zugeführt, dessen Abluft erneut in den statischen Kaskadensichter als Teil des Luftstroms 17 rezirkuliert werden kann.In the space within the radially inner Konusringpakets 12 of the static cascade classifier the Nachsichter with exit of the fine material laden with the visual air is arranged. The classifying air / fine material flow 19 is supplied to a separator, not shown in the drawing, for the purpose of separating off the fine fine material, the exhaust air of which can again be recirculated into the static cascade classifier as part of the air stream 17.

Nach Fig. 1 ist der oberhalb bzw. innerhalb des Kaskadensichters installierte Nachsichter ein statischer Luftstromsichter ohne bewegte Bauteile.To Fig. 1 is the above installed inside the cascade classifier, a static Luftstromsichter without moving components.

Nach Fig. 1 strömt die um den Umfang verteilte Abluft 20a, 20b etc. des Kaskadensichters, wobei in dieser Abluft nach Aussichtung der Grobkornfraktion eine Mittelkornfraktion sowie die Feinkornfraktion suspendiert ist, von unten nach oben in den Ringraum zwischen dem inneren Gutsammeltrichter 21 und dem Außengehäuse des statischen Luftstromsichters ein und durchströmt oben von außen nach innen einen ggf. verstellbaren Leitschaufelkranz 22. Aufgrund der Strömungsumlenkung wird die Suspension in eine Mittelkornfraktion 23 aufgetrennt, die durch Schwerkrafteinwirkung an der Innenseite des Trichters 21 entlang nach unten zu einer zentralen Gutaustragsöffnung 24 des Sichters transportiert wird, während die im Sichtluftstrom 19 verbliebene Feinkronfraktion über die zentrale Umlenkhaube 25 aus der Sichtereinrichtung abgezogen wird. Die die Sichtereinrichtung unten verlassende Mittelkornfraktion 26 kann einer gesonderten Verwendung zugeführt werden. Es besteht aber auch die Möglichkeit, die Grobkornfraktion 18 und die Mittelkornfraktion 26 der Sichtereinrichtung ggf. zusammengefasst zur Gutaufgabe der Mühle eines Mahlkreislaufes zu rezirkulieren.To Fig. 1 flows around the circumference distributed exhaust air 20a, 20b, etc. of the cascade classifier, which in this exhaust air to the prospect of coarse grain fraction a middle grain fraction and the fine grain fraction is suspended, from bottom to top in the annulus between the inner Gutsammeltrichter 21 and the outer housing of the static Luftstromsichters a Due to the flow deflection, the suspension is separated into a medium-grain fraction 23, which is transported by gravity on the inside of the hopper 21 down to a central Gutaustragsöffnung 24 of the classifier, while the in the classifying air stream 19 remaining fine crown fraction is withdrawn via the central deflecting hood 25 from the classifier. The center grain fraction 26 leaving the sifter means may be fed to a separate use. However, it is also possible to recirculate the coarse grain fraction 18 and the middle grain fraction 26 of the classifying device if necessary in a summarized manner for the purpose of feeding the mill of a grinding cycle.

Beim Ausführungsbeispiel der Fig. 2 ist der in den Innenraum des radial inneren Konusringpaketes 12 des statischen Kaskadensichters integrierte Nachsichter nicht wie bei Fig. 1 ein statischer Luftstromsichter ohne bewegte Teile, sondern ein dynamischer Stabkorbsichter, dessen drehbar gelagerter, am Rotorumfang mit Turboelementen versehener Stabkorb 27 mit vertikaler Drehachse 28 konzentrisch innerhalb des Leitschaufelkranzes 22 an der Oberseite der Sichtereinrichtung angeordnet ist. An der Peripherie des rotierenden Stabkorbes 27 wird im Zwischenbereich zum Leitschaufelkranz 22 die auch in Fig. 1 dargestellte Mittelkornfraktion 23 abgezogen, während über die obere Stirnseite des rotierenden Stabkorbs 27 der durch den Pfeil 19 dargestellte Sichtluft/Feinkorn- bzw. Fertiggut-Strom abgezogen und zwecks Abtrennung des Fertiggutes einem in der Zeichnung nicht dargestellten Abscheider zugeführt wird.In the embodiment of Fig. 2 is not integrated in the interior of the radially inner Konusringpaketes 12 of the static cascade classifier indulgence as at Fig. 1 a static Luftstromsichter without moving parts, but a dynamic Stabkorbsichter whose rotatably mounted, provided on the rotor circumference with turbo elements rod basket 27 with vertical axis of rotation 28 is disposed concentrically within the vane ring 22 at the top of the classifier. At the periphery of the rotating rod basket 27 is in the intermediate region to the vane ring 22 which also in Fig. 1 shown mid-grain fraction 23 withdrawn, while deducted over the upper end face of the rotating rod basket 27 of the visual air / fine grain or Fertiggut stream shown by the arrow 19 and for the purpose of separation of the finished material is fed to a separator not shown in the drawing.

Nach Fig. 2 ist die oben beschriebene Sichtereinrichtung in einen Mahlkreislauf mit einer Wälzmühle bzw. Walzenschüsselmühle 29 eingeschaltet, in der Weise, dass die Austragsöffnungen 15 und 24 zum Austrag der Grobkornfraktion 18 und der Mittelkornfraktion 26 aus der Sichtereinrichtung oberhalb der Gutaufgabe der Walzenschüsselmühle angeordnet sind. Diese Mühle weist einen horizontalen Mahlteller 30 auf, der von einem Antriebsmotor 31 über ein Getriebe in Drehung versetzbar ist. Das auf der kreisförmigen Mahlbahn des Mahltellers 30 zu liegen kommende Mahlgut wird von mehreren über den Umfang verteilten Mahlrollen 32 überrollt und dabei gemahlen.To Fig. 2 the separator device described above is switched into a grinding circuit with a roller mill 29, in such a way that the discharge openings 15 and 24 for discharging the coarse grain fraction 18 and the middle grain fraction 26 from the classifier are arranged above the crop feed of the roller mill. This mill has a horizontal grinding table 30, which is set in rotation by a drive motor 31 via a gear. The grinding stock to be placed on the circular grinding track of the grinding table 30 is used by several over the circumference distributed grinding rollers 32 rolled over and ground.

Die Walzenschüsselmühle 29 kann ohne Luftstrom arbeiten. Das Mühlenaustragsgut 33 wird über eine Fördereinrichtung 34 wie z. B. Becherwerk zu den Guteintragsöffnungen 14a, 14b etc. des Kaskadensichterteils der Sichtereinrichtung transportiert, in welche auch das Frischgut 35 eingeführt wird, z. B. Zementrohmaterial, Zementklinker oder dergleichen. Das Frischgut 35 kann im Prinzip an jeder Stelle in den Mahlkreislauf eingeschleust werden. Ist das Frischgut 35 feucht, wird es mit besonderem Vorteil an den Guteintragsöffnungen 14a, 14b etc. des Kaskadensichters zusammen mit dem von der Walzenschüsselmühle 32 kommenden Mahlgut in den Mahlkreislauf eingeschleust. Auf diese Weise wird das feuchte Frischgut im Kaskadensichter insbesondere mit Heißgas getrocknet und vorgesichtet, so dass in die Walzenschüsselmühle 32 nur trockenes Mahlgut gelangt und die Wälzmühle ohne Luftstrom bzw. Gasstrom arbeiten kann.The roller mill 29 can work without air flow. The Mühlenaustragsgut 33 is via a conveyor 34 such. B. bucket elevator to the Guteintragsöffnungen 14 a, 14 b, etc. of the cascade viewer part of the classifier transported, in which also the fresh material 35 is introduced, for. As cement raw material, cement clinker or the like. The fresh material 35 can in principle be introduced at any point in the grinding circuit. If the fresh material 35 moist, it is introduced with particular advantage to the Guteintragsöffnungen 14a, 14b, etc. of the cascade classifier together with the coming of the roller mill mill 32 regrind in the grinding circuit. In this way, the moist fresh material is dried in the cascade classifier, in particular with hot gas and pre-classified, so that in the roller mill 32 only dry ground material passes and the roller mill can work without air flow or gas flow.

Beim Fall des ggf. feuchten Frischgutes 35 durch Schwerkraft von oben nach unten über die Konusringe des radial äußeren Konusringpaketes 11 mit Aufschlag des Gutes an den Konusringen und Gutumwälzung werden die im Frischgut sowie ggf. im Mühlenaustragsgut enthaltenen Gutagglomerate desagglomeriert, wirkungsvoll getrocknet und etwa im Querstrom vorgesichtet. Aufgrund dessen und aufgrund des reduzierten Druckverlustes durch Wegfall des Einsatzes eines Luftstroms bei der Wälzmühle ist die erfindungsgemäße Kreislaufmahlanlage durch einen niedrigen spezifischen Energiebedarf ausgezeichnet.In the case of possibly moist fresh material 35 by gravity from top to bottom over the conical rings of the radially outer conical ring package 11 with impact of the goods on the conical rings and Gutumwälzung the fresh agglomerates and possibly contained in Mühlenaustragsgut Gutagglomerate be effectively deagglomerated, effectively dried and about in the cross flow vorgesichtet. Because of this and due to the reduced pressure loss by eliminating the use of an air flow in the roller mill, the Kreislaufmahlanlage invention is characterized by a low specific energy consumption.

Beim Ausführungsbeispiel der Fig. 3 ist im Unterschied zu Fig. 2 die Sichtereinrichtung statt mit einer Walzenschüsselmühle mit einer Gutbettzerkleinerungs-Walzenpresse bzw. Rollenpresse 36 kombiniert, deren Austragsgut 37 sogenannte Pressschülpen enthält, die nach Rezirkulierung im Kaskadensichterteil der Sichtereinrichtung besonders wirkungsvoll desagglomeriert und gesichtet werden. Auch bei diesem Ausführungsbeispiel ist der Grobkornfraktions/Mittelkornfraktions-Austrag 38 der Sichtereinrichtung unmittelbar oberhalb des Gutaufgabeschachtes 39 der Rollenpresse 36 angeordnet.In the embodiment of Fig. 3 is different from Fig. 2 instead of using a roller mill, the separator device is combined with a comminution roller press or roller press 36, whose Austragsgut contains 37 so-called squeegees, which are particularly effectively disagglomerated and sighted after recirculation in Kaskadensicht part of the sifter. Also in this embodiment, the coarse grain fraction / middle grain fraction discharge 38 of the classifier is located immediately above the hopper shaft 39 of the roller press 36.

Die Sichtereinrichtung ist nach Fig. 3 mit einer einzigen Rollenpresse 36 kombiniert. Sie kann aber auch wegen ihrer hohen Durchsatzleistung mit mehreren solchen Rollenpressen 36 kombiniert sein.The sifter is after Fig. 3 combined with a single roller press 36. But it can also be combined with several such roller presses 36 because of their high throughput.

Claims (7)

  1. Sifter device for the sifting of granular stock, with a static cascade sifter, as a presifter, which is arranged within a sifter housing (10) and which is followed on the sifting-air flow side by a further sifter as a postsifter, with inlets and outlets for sifting air, sifting stock, fine stock and coarse stock, having the following features:
    a) the static cascade sifter (11, 12) consists of two stacks of cone rings arranged in each case, spaced apart, one above the other and concentrically to one another, to be precise of a radially outer stepped cone-ring stack (11) and of a radially inner sifting-flow cone-ring stack (12);
    b) between the radially outer and the radially inner ring stack, an annular sifting zone (13) is formed, of which the large diameter (D) lies on the top side and of which the small diameter (d) lies on the underside of the ring stacks;
    c) a plurality of sifting-stock introduction ports (14a, 14b) are arranged, distributed over the circumference, around the top side of the sifting zone (13) having the large diameter (D), while at least one coarse-grain fraction discharge port (15) is arranged on the underside of the sifting zone (13) having the smaller diameter (d);
    d) both the steps of the radially outer ring stack (11) and the sifting flows of the radially inner ring stack (12) of the cascade sifter are inclined in each case as cone rings obliquely downwards in the direction of the coarse-grain fraction discharge port (15);
    characterized in that
    e) the postsifter, with an outlet for the sifting air laden with the fine stock, is arranged in the space within the radially inner cone-ring stack (12) of the static cascade sifter, wherein, on the underside of the static cascade sifter, at the centre of the latter, is arranged a lower discharge port (24) of the postsifter for the discharge of a medium-grain fraction (26).
  2. Sifter device according to Claim 1, characterized in that the cone rings of the cone-ring stacks (11 and 12) are circular or polygonal, as seen in a top view.
  3. Sifter device according to Claim 1, characterized in that the postsifter is a static air-swept sifter.
  4. Sifter device according to Claim 1, characterized in that the postsifter is a dynamic barred-cage sifter, with a barred cage (27) rotatable about a vertical axis (28) and having turbo-elements arranged so as to be distributed over the rotor circumference.
  5. Circulatory grinding plant for the grinding of fresh stock (35), with a mill (29 or 36) and with a sifter device, the coarse-grain discharge port of which is connected to the stock feed of the mill, characterized by a sifter device having the features of Claim 1, the coarse-grain fraction discharge port (15) of the sifter device being arranged above the stock feed of the mill (29 or 36).
  6. Circulatory grinding plant according to Claim 5, characterized in that the mill is a high-pressure roll press or roller press (36) for stock-bed comminution, with the mechanical conveyance (34) of the press scabs to the sifting-stock introduction ports (14a, 14b) of the static cascade sifter (11, 12).
  7. Circulatory grinding plant according to Claim 5, characterized in that the mill is a bowl-type roll mill (29), with conveyance (34) of the mill discharge stock (33) to the sifting-stock introduction ports (14a, 14b) of the static cascade sifter (11, 12).
EP07801812.4A 2006-08-24 2007-08-22 Classifying device for classifying granular material and circulating grinding plant incorporating such a classifying device Not-in-force EP2106301B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006039775A DE102006039775A1 (en) 2006-08-24 2006-08-24 Sighting device for sifting granular material and Kreislaufmahlanlage with involvement of such a viewing device
PCT/EP2007/007382 WO2008022778A2 (en) 2006-08-24 2007-08-22 Classifying device for classifying granular material and circulating grinding plant incorporating such a classifying device

Publications (2)

Publication Number Publication Date
EP2106301A2 EP2106301A2 (en) 2009-10-07
EP2106301B1 true EP2106301B1 (en) 2013-04-24

Family

ID=38962866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07801812.4A Not-in-force EP2106301B1 (en) 2006-08-24 2007-08-22 Classifying device for classifying granular material and circulating grinding plant incorporating such a classifying device

Country Status (9)

Country Link
EP (1) EP2106301B1 (en)
CN (1) CN101528366A (en)
CL (1) CL2007002482A1 (en)
DE (1) DE102006039775A1 (en)
DK (1) DK2106301T3 (en)
EA (1) EA200900352A1 (en)
PE (1) PE20080869A1 (en)
TW (1) TW200831201A (en)
WO (1) WO2008022778A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011055762B4 (en) 2011-11-28 2014-08-28 Maschinenfabrik Köppern GmbH & Co KG Device for sifting granular material and grinding plant
CN102744135B (en) * 2012-07-20 2014-07-23 北京建筑大学 Airflow screening grinder
DE102014001384B4 (en) 2014-02-01 2018-03-29 Khd Humboldt Wedag Gmbh Ring-shaped cascade classifier with downstream rod basket sifter
CN103964513B (en) * 2014-05-05 2015-07-08 南通宝聚颜料有限公司 Continuous ferrous sulfate free acid separation device
DE102014015550A1 (en) 2014-10-22 2016-04-28 Thyssenkrupp Ag Sight device for sifting a granular material flow
CN108435293B (en) * 2018-03-14 2019-03-26 北京中核大地矿业勘查开发有限公司 A kind of recovery of ecologic environment in a mine equipment
CN108940442A (en) * 2018-08-03 2018-12-07 南京环务资源再生科技有限公司 A kind of gravity separation formula pulverizer of waste electrical equipment
CN109046694A (en) * 2018-09-17 2018-12-21 长沙开元仪器有限公司 A kind of abrading type disintegrator
AU2020288417A1 (en) * 2019-06-04 2021-12-23 Flsmidth A/S Integrated separator
CN114345454A (en) * 2021-12-01 2022-04-15 中材（天津）粉体技术装备有限公司 High-efficiency low-resistance vertical roller mill
CN115625001B (en) * 2022-12-20 2023-03-14 保定旗开得胜办公设备制造有限公司 Even granularity carbon dust grinds preparation facilities for printer
CN116060185B (en) * 2023-04-06 2023-06-20 山东埃尔派粉体科技有限公司 Can realize inertia from air current classified screening machine of reposition of redundant personnel

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE455864C (en) * 1924-01-12 1928-02-14 Christian Poehlmann Dr Ing Method and device for classifying or sorting dust-like minerals, in particular talc, graphite, earth, sand and other dust masses, with the aid of air currents
GB588347A (en) * 1945-02-13 1947-05-20 John Newton Collins Improvements in and apparatus for separating or sorting granular particles by pneumatic means
DE1607536C3 (en) * 1968-02-24 1974-01-17 Loesche Hartzerkleinerungs- Und Zementmaschinen Kg, 4000 Duesseldorf Airflow separator
DE4124416A1 (en) * 1991-07-23 1993-01-28 Krupp Polysius Ag DEVICE AND METHOD FOR CRUSHING GROUND DIFFERENT GRAIN
DE4223762B4 (en) * 1992-07-18 2009-07-23 Khd Humboldt Wedag Gmbh Classifying device for sifting granular material and circulation grinding plant with the involvement of such a sifting device
DE4337215A1 (en) * 1993-10-30 1995-05-04 Kloeckner Humboldt Deutz Ag Circulating grinding plant
DE10329053A1 (en) * 2003-06-27 2005-01-13 Khd Humboldt Wedag Ag Kreislaufmahlanlage with mill and classifier
DE102005054209B4 (en) * 2005-11-14 2014-05-28 Loesche Gmbh roller mill
DE102006004282A1 (en) * 2006-01-31 2007-08-02 Khd Humboldt Wedag Gmbh Roller press, to crush and compact clinker and the like for a material bed, has paired rollers with bearing housings on brackets to move on upper/lower sliding paths

Also Published As

Publication number Publication date
TW200831201A (en) 2008-08-01
PE20080869A1 (en) 2008-07-02
DE102006039775A1 (en) 2008-02-28
WO2008022778A2 (en) 2008-02-28
DK2106301T3 (en) 2013-07-08
EP2106301A2 (en) 2009-10-07
WO2008022778A3 (en) 2008-04-17
CL2007002482A1 (en) 2008-01-04
CN101528366A (en) 2009-09-09
EA200900352A1 (en) 2009-12-30

Similar Documents

Publication Publication Date Title
EP2106301B1 (en) Classifying device for classifying granular material and circulating grinding plant incorporating such a classifying device
EP2785472B1 (en) Device for classifying grainy products
EP1919624B1 (en) Drying mill and method of drying ground material
EP1506058B1 (en) Circulating grinding plant comprising a mill and a sifter
EP1948360B1 (en) Roller mill
EP0325770B1 (en) Grinding method and arrangement
EP0460490B1 (en) Air classifier
DE3303078C1 (en) Air classifier for the fine area
EP0650763A1 (en) Closed circuit grinding plant
DE8425837U1 (en) Roller mill
EP0374491B1 (en) Sifter
EP0250921B1 (en) Air classifier
EP0292739B1 (en) Method and arrangement for breaking up grindable material
DE3403940C2 (en) Mill sifter
EP2780113A1 (en) Vertical roller mill
DE19726523A1 (en) Cycle grinding device with high pressure roller press and sifter
EP0237641B1 (en) Comminuting plant for brittle material
EP0350616B1 (en) Pneumatic classifier for granular or agglomerated material
DE102006017510A1 (en) Closed circuit grinding mill comprises grinding circuit for pre-grinding of fresh goods with former grinding device and sifter, and both grinding circuits are coupled by dynamic sifter with rotating rod basket, which is used by circuits
EP0801985B1 (en) High pressure roller press for pressure milling of granular material
DE4005031C1 (en) Dynamic wind sifter for roller mill - has central, restricted riser for air material mixt. flow with downwards deflection in top region of sifter rotor
WO2005000473A1 (en) Closed-circuit crushing system having a mill and separator
DE102014001384B4 (en) Ring-shaped cascade classifier with downstream rod basket sifter
WO2023131393A1 (en) Classifier assembly for a vertical roller mill
DD127023B1 (en) MAHLAN LINE FOR THE MINERAL DELIVERY OF MINERALS

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090324

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17Q First examination report despatched

Effective date: 20101027

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

RIN2 Information on inventor provided after grant (corrected)

Inventor name: SUESSEGER, ALBERT

Inventor name: STRASSER, SIEGFRIED

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 608278

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130515

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502007011665

Country of ref document: DE

Effective date: 20130620

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20130424

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130826

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130725

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130824

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130804

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130724

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

BERE Be: lapsed

Owner name: KHD HUMBOLDT WEDAG G.M.B.H.

Effective date: 20130831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20140127

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130831

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130831

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007011665

Country of ref document: DE

Effective date: 20140127

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130822

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130822

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 608278

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130822

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130424

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20070822

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130822

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20150821

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160822

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20190820

Year of fee payment: 13

Ref country code: CZ

Payment date: 20190724

Year of fee payment: 13

Ref country code: DK

Payment date: 20190821

Year of fee payment: 13

Ref country code: FR

Payment date: 20190822

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20191019

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502007011665

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20200831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210302

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200822