EP1419010B1 - Roller grinding mill and method for grinding materials that contain magnetizable components - Google Patents
Roller grinding mill and method for grinding materials that contain magnetizable components Download PDFInfo
- Publication number
- EP1419010B1 EP1419010B1 EP02764781A EP02764781A EP1419010B1 EP 1419010 B1 EP1419010 B1 EP 1419010B1 EP 02764781 A EP02764781 A EP 02764781A EP 02764781 A EP02764781 A EP 02764781A EP 1419010 B1 EP1419010 B1 EP 1419010B1
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- EP
- European Patent Office
- Prior art keywords
- roller
- grinding
- electromagnetic device
- particles
- air
- 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.)
- Expired - Lifetime
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- 238000000227 grinding Methods 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 title claims abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 76
- 239000002245 particle Substances 0.000 claims abstract description 48
- 229910052742 iron Inorganic materials 0.000 claims abstract description 34
- 238000003801 milling Methods 0.000 claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 10
- 239000000470 constituent Substances 0.000 claims abstract 9
- 238000000926 separation method Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 2
- 239000011362 coarse particle Substances 0.000 claims 2
- 238000010276 construction Methods 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 6
- 239000006148 magnetic separator Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
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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
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/001—Air flow directing means positioned on the periphery of the horizontally rotating milling surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/14—Edge runners, e.g. Chile mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
- B02B3/00—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming
- B02B3/04—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming by means of rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/004—Shape or construction of rollers or balls
- B02C15/005—Rollers or balls of composite construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/12—Mills with at least two discs or rings and interposed balls or rollers mounted like ball or roller bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier
Definitions
- the invention relates to a roller mill according to the preamble of claim 1, in particular an air flow roller mill according to the preamble of claim 4, and a method for Milling of materials with magnetizable, in particular ferrous components according to the preamble of the claim 14th
- the invention is preferred for slag mills and for Grinding of granulated blastfurnace slag and for use in cement grinding plants suitable in which air flow roller mills for Milling of cement clinker, gypsum and blastfurnace slag used be (DE 39 21 986 C1).
- Blastfurnace slag is produced during iron production during the Blast furnace process and contains iron particles, which in Grinding process to a relatively high wear of the grinding process lead involved components.
- the feed material is present the crushing a magnetic separator, in particular an overband magnetic separator supplied. Be here However, only removed components that are free and not enclosed by slag. These ingredients arrive with the stuffing in the mill.
- the iron particles are digested during the milling process and accumulate because of their high specificity Weight and poor grindability on the Grinder bowl on. A removal takes place only if these enriched iron particles due to centrifugal force over the grinding bowl edge and the vane ring in the Ring channel and from here to the external circulation for the so-called "outside grotesque" get where they are about magnetic Separators are separated from the semolina.
- From CH-PS 103 265 is a method for crushing, Crushing or squeezing any substances known at which the elements between which the millbase of the treatment is subjected, with magnetic force against each other be pressed.
- Roller mills are described in which the magnetically generated between the grinding rollers Pressure to reduce bearing pressures and moving Should lead masses.
- magnetic substances in regrind should be the signs of wear on the grinding rollers after its formation automatically eliminated by it be that the magnetic components to the elevations be attracted and crushed, leaving a larger Wear as takes place in the wells.
- For separating magnetizable substances in the millbase is at least in addition a magnetizable separating roller before or after the Mahlspalt be arranged, which with one of the two Milling rollers cooperates.
- the invention has for its object to provide a roller mill, in particular an air flow roller mill, and a method which in a very simple and efficient way, without interrupting the grinding operation and maintaining the product quality removal of the iron components and other metal components from the material to be ground in the grinding room.
- a basic idea of the invention can be seen therein in the grinding room, especially in the grinding bed on the grinding bowl existing and open-minded during comminution magnetizable particles, in particular iron particles, with the help of at least one electromagnetic Device which is arranged in the grinding chamber to remove and by the extraction of these particles, which in particular can be done continuously, enriching this Avoid particles on the grinding bed.
- the electromagnetic device is a roller-like and rolling on the grinding bed device, which is designed such that the magnetizable, especially iron particles, the grinding bed at the surface adhere.
- a discharge device which with the roller-like electromagnetic device connected is and interacts with this, the isolated magnetizable components of the roll-like Device removed and discharged from the grinding chamber.
- the electromagnetic device can also above the grinding bed and with an adjustable gap between the shell of the cylindrical device and the Grinding bowl be arranged.
- roller mills which, for example, as overflow mills used and have no integrated classifier, can also be a grinding roller for electromagnetic separation be educated.
- iron particles hereinafter also other magnetizable particles be understood, the wear of Grinding rollers and grinding bowl reduced and the service life elevated.
- At least one electromagnetic To install equipment in air flow roller mills which at least one pair of rollers, usually two or also three pairs of rollers, have.
- a pair of rollers exists from a grinding roller, also called master roller, and out an auxiliary roll, also called slave roll or slave roller, which is upstream of the grinding roller and the grinding bed prepared, in particular uniformed and compacted, and, especially for hard and brittle materials, one optimized, vibration-free grinding guaranteed.
- At least one auxiliary roll to the electromagnetic Separation of magnetisable components, in particular iron particles to form from the grinding bed and to connect with a discharge device, with which removes these interfering components from the grinding chamber can be.
- the auxiliary roll a non-magnetic roll shell and inside a controllable Electromagnet, preferably with an iron core and electric coils, their shape and arrangement in order to build up an effective magnetic field over one adjusted predetermined range of the roll shell of the roll shape are.
- a controllable Electromagnet preferably with an iron core and electric coils, their shape and arrangement in order to build up an effective magnetic field over one adjusted predetermined range of the roll shell of the roll shape are.
- the power supply for the electric coils may expediently take place in the region of the roll axis. Furthermore can for controlling the electromagnet advantageously a Thyristor be provided.
- the discharge device for the removal of the electromagnetic Device deposited metal particles, in particular the iron particles, is expediently such formed so that the deposited particles continuously transported from the grinding room and for example over the vane ring in a arranged underneath Room can be transported.
- a discharge device which a scraper, a conveyor trough and a downpipe.
- the scraper may be formed strip-shaped and expediently at least over the width of the rolling Surface of the electromagnetic device, e.g. of Mantels an auxiliary roll, enough. Besides, it is for one trouble-free takeover of the particles expedient if the Scrapers parallel and with an adjustable distance to the Roll shell of the electromagnetically designed auxiliary roll is arranged.
- the scraper is detachable and / or height adjustable attached to the conveyor trough.
- the scraper and the conveyor trough one unity.
- the conveyor trough with defined arranged Scrapers are then advantageously fastened such that a height adjustment and a change of the gap between the wiper and the electromagnetic roller is possible.
- the scraper and / or the conveyor trough be attached to the mill housing.
- auxiliary roll with electromagnet, for example in the region of the oscillating lever or the roll axis, advantageous.
- the scraper and / or the conveyor trough then follow the movement of the auxiliary roll and be with this moved up and down on the grinding bed.
- the conveyor trough has expediently in the direction of Opening in the vane ring a slope, leaving the stripped Particles transported due to gravity be and, for example via a downpipe, which is arranged in an opening in the vane ring, in the annular channel or a space below the vane ring reach.
- a controllable Close the barrier For example, a weight-loaded pendulum flap be installed, which at a predeterminable load of accumulated particles in Direction ring is swung open.
- magnetisable in particular iron-containing components
- slags that provides in addition to an electromagnetic separation before the grinding process in a roller mill, in particular in an air flow roller mill, another electromagnetic deposition In the grinding room is carried out to the in the grinding process to extract digested, freely present particles and an accumulation of these particles on the grinding bowl to avoid.
- the electromagnetic deposition in Grinding chamber by means of a roller-shaped device, in particular an auxiliary roll performed.
- a roller-shaped device in particular an auxiliary roll performed.
- Mahlbettpreparierung can with at least one cylindrical, on the grinding bed rolling electromagnetic device, for example, an auxiliary roll, which with a controllable electromagnet is provided, an extraction the magnetizable particles, in particular the iron particles, take place from the grinding bed and the grinding chamber. It can a continuous deposition at the electromagnetic trained auxiliary roll performed particularly advantageous become.
- the deposited on the electromagnetically trained auxiliary roll Particles are then advantageously using a corresponding discharge device, stripped over the vane ring the annular channel of the air flow roller mill fed and along with the over the Mahlschüsselrand thrown, reaching into the annulus semolina from the Mill discharged and mechanically, especially with a Reciprocating bucket, for feeder, e.g. to a Weighing belt for the feed material, promoted.
- a Reciprocating bucket for feeder, e.g. to a Weighing belt for the feed material, promoted.
- another metal deposit in particular an electromagnetic separation, carried out.
- the grits are then usually with fed new feed of the air flow roller mill again.
- Electromagnet regulated by the speed signal of the auxiliary rollers become.
- the Advantages that essentially the existing component devices can be used. Because of the continuous Separation and discharge from the grinding chamber and the space below the grinding bowl is a total of one lesser outer orbit, and the plant for the reclaimed grits, also called reject plant, can be sized smaller. Furthermore are suitable the separated and discharged iron particles as a material for sandblasting. Another essential The advantage is the avoidance of signs of wear at the grinding rolls, auxiliary rolls and at the grinding track and the related repair costs, downtime etc.
- Fig. 1 shows a LOESCHE air flow roller mill 2, which is particularly It is predestined for cement and granulated blastfurnace grinding and with two pairs of rollers 3, 15 is provided.
- Fig. 1 two grinding rollers 3, but only an auxiliary roller 15 shown. From Fig. 2, however, go the two pairs of rollers, each consisting of a Grinding roller (master roller) 3 and an auxiliary roller (slave roller) 15 exist.
- the grinding rollers 3 and auxiliary rollers 15 roll on a grinding bed starting from the feed material on a grinding track of a rotating grinding bowl 4 is formed.
- the grinding bowl 4, which is rotated by a drive 8 in rotation, is surrounded by a vane ring 6, via which a Gas stream, in particular air, from a ring line 7 in the Grinding chamber 5 flows.
- the feed for example blast furnace slag or a mixture of cement clinker, gypsum and Slag, via metering devices, becomes a magnetic separator and a task device (not shown) abandoned the air flow roller mill, arrives the grinding bowl 4 and is pressed between the resilient Grinding rollers 3 and the grinding bowl 4 crushed.
- a feed channel 17 and the annular channel 7 through the Guide vane 16 in the grinding chamber 5 incoming air conveys the mixture of fine and coarse material into a viewing area 13 and in the range of a classifier 9. Grobgut is rejected and falls back to the grinding bowl 4, while Fine material is discharged via a fine material discharge 14.
- Fig. 1 are also the mill housing 12, the rocker arm 10 of the two grinding rollers 3 and a hydraulic cylinder device 11 at the left grinding roller 3, which shows the effect resilient contact pressure of the grinding rollers 3.
- the auxiliary rollers 15 have in the present embodiment 1 and 2, a smaller diameter than the grinding rollers 3 and are in contrast to the grinding rollers 3 not kraftbeaufschlagt, but lie with their own weight on the grinding bed, with a pure rolling motion or one superimposed by a targeted sliding movement Rolling motion occurs.
- Each auxiliary roll prepares 15 the grinding bed for - in the direction of rotation of the roller bowl 5 seen behind the auxiliary roller 15 arranged grinding roller 3, which performs the crushing of the ground material.
- arrangement and effect of auxiliary rollers is to the German Patent 39 21 986 referenced.
- Fig. 2 shows that the auxiliary roller 15 as the grinding rollers. 3 are conical and their width about the Mahlbahnbreite equivalent.
- At least one auxiliary roll 15 is for electromagnetic Separation of magnetisable fractions, in particular iron fractions, formed from the grinding stock to be comminuted, an enrichment of these ingredients on the grinding bowl 4 and concomitant wear of the grinder to avoid.
- Fig. 3 shows a trained for electromagnetic separation Auxiliary roll 15 in cross section.
- Arrow A gives the Direction of rotation of the auxiliary roller 15 and arrow B the direction of rotating grinding bowl 4 on.
- the ground material to be comminuted or the grinding bed is not shown.
- the auxiliary roller 15 has a roll shell 23 made of a non-magnetic material on and inside is iron core 21 and provided with electric coils 22.
- the iron core 21 is the conically shaped roll shell 23 of the auxiliary roll 15 adapted and reaches - seen in cross section - about about two thirds of the lateral surface, so that the to be removed Metal, in particular iron particles, from the grinding bed on the Grinding bowl 4 can be picked up and rotating Roll shell 23 adhering, up to a discharge 30 are transported.
- the discharge device 30 goes also shown in FIG. 4.
- a scraper 31 and a conveyor trough 32 is shown very schematically.
- the electromagnetic device 20 in the interior of the auxiliary roll 15 has three electric coils 22 which in a Angular distance of about 120 ° are arranged radially and with the iron core 21 form the stationary electromagnet, through the iron particles on the grinding bowl be tightened and on the rotating roll shell 23 adherent, up to a magnetic-free area and the here arranged discharge device 30 arrive.
- Fig. 4 From Fig. 4 go the conical iron core 21 near the Roll shell 23 of the auxiliary roll 15 and the arrangement of the scraper 31 on the conveyor trough 30 out.
- the scraper 31 is strip-shaped and parallel and with a small distance to the roll shell 23 on the conveyor trough 32 attached.
- the conveyor trough 32 is at a slight slope in the direction Mill housing 12 and Leitschaufelkranz 7 arranged and opens into a downpipe 33.
- the downpipe is in one Opening 35 of the vane ring 7 is arranged and extends up to the annular channel 7.
- the attachment of the downpipe 33rd can via fasteners 36 in the region of adjacent Guide vanes of the vane ring 6 or on the mill housing 12 done.
- the drop tube 33 is at the lower end provided with a closure flap 34, which as a weight-loaded Swing flap is formed.
- the deposited on the auxiliary roll 15 magnetized particles and in particular iron particles are only in the range held the iron core 21 and then pass through the Scraper 31 in the conveyor trough 32, then in the downpipe 33 and in the annular channel 7. In the annular channel 7 and a Space below the grinding chamber, the coarse material particles collect or grits that neither from the grinding rollers 3 for Crushing were detected, still in the air stream to reformer 9 have arrived.
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Abstract
Description
Die Erfindung betrifft eine Wälzmühle gemäß dem Oberbegriff
des Anspruchs 1, insbesondere eine Luftstrom-Wälzmühle
gemäß dem Oberbegriff des Anspruchs 4, und ein Verfahren zur
Vermahlung von Stoffen mit magnetisierbaren, insbesondere
eisenhaltigen Bestandteilen gemäß dem Oberbegriff des Anspruchs
14.The invention relates to a roller mill according to the preamble
of claim 1, in particular an air flow roller mill
according to the preamble of
Die Erfindung ist bevorzugt für Schlackenmühlen und zur Vermahlung von Hüttensand sowie zur Anwendung in Zementmahlanlagen geeignet, bei denen Luftstrom-Wälzmühlen zur Vermahlung von Zementklinker, Gips und Hüttensand eingesetzt werden (DE 39 21 986 C1).The invention is preferred for slag mills and for Grinding of granulated blastfurnace slag and for use in cement grinding plants suitable in which air flow roller mills for Milling of cement clinker, gypsum and blastfurnace slag used be (DE 39 21 986 C1).
Hüttensand entsteht bei der Eisenherstellung während des Hochofenprozesses und enthält Eisenpartikel, welche im Mahlprozess zu einem relativ hohen Verschleiß der am Mahlprozess beteiligten Bauteile führen.Blastfurnace slag is produced during iron production during the Blast furnace process and contains iron particles, which in Grinding process to a relatively high wear of the grinding process lead involved components.
Um den Verschleiß zu minimieren, wird das Aufgabegut vor der Zerkleinerung einem Magnetabscheider, insbesondere einem Überband-Magnetabscheider, zugeführt. Hier werden jedoch nur Bestandteile entfernt, welche frei vorliegen und nicht von Schlacke umschlossen sind. Diese Bestandteile gelangen mit dem Aufgabegut in die Mühle.In order to minimize wear, the feed material is present the crushing a magnetic separator, in particular an overband magnetic separator supplied. Be here However, only removed components that are free and not enclosed by slag. These ingredients arrive with the stuffing in the mill.
Aus der US 3 951 347 ist eine Wälzmühle mit einem Magnetabscheider der am Materialeinlass augebracht ist, bekannt. From US 3,951,347 is a roller mill with a magnetic separator which is brought up at the material inlet, known.
Die Eisenpartikel werden während des Mahlprozesses aufgeschlossen und reichern sich aufgrund ihres hohen spezifischen Gewichtes und der schlechten Mahlbarkeit auf der Mahlschüssel an. Eine Entfernung erfolgt nur dann, wenn diese angereicherten Eisenpartikel aufgrund der Fliehkraft über den Mahlschüsselrand und den Leitschaufelkranz in den Ringkanal und von hier in den externen Umlauf für die sogenannten "äußeren Grieße" gelangen, wo sie über magnetische Abscheideeinrichtungen von den Grießen getrennt werden.The iron particles are digested during the milling process and accumulate because of their high specificity Weight and poor grindability on the Grinder bowl on. A removal takes place only if these enriched iron particles due to centrifugal force over the grinding bowl edge and the vane ring in the Ring channel and from here to the external circulation for the so-called "outside grotesque" get where they are about magnetic Separators are separated from the semolina.
Aus der CH-PS 103 265 ist ein Verfahren zum Zerkleinern, Zerquetschen oder Auspressen beliebiger Stoffe bekannt, bei welchem die Elemente, zwischen denen das Mahlgut der Behandlung unterworfen wird, mit magnetischer Kraft gegeneinander gepresst werden. Es werden Walzenmühlen beschrieben, bei welchen der zwischen den Mahlwalzen magnetisch erzeugte Druck zu einer Verringerung der Lagerdrücke und der bewegten Massen führen soll. Bei Anwesenheit magnetischer Stoffe im Mahlgut sollen die Abnutzungserscheinungen an den Mahlwalzen nach deren Entstehung selbsttätig dadurch beseitigt werden, dass die magnetischen Bestandteile an die Erhöhungen angezogen und zerkleinert werden, so dass eine größere Abnutzung als in den Vertiefungen stattfindet. Zum Abscheiden magnetisierbarer Stoffe im Mahlgut wird zusätzlich wenigstens eine magnetisierbare Scheidewalze vor oder nach dem Mahlspalt angeordnet werden, welche mit einer der zwei Mahlwalzen zusammenzuwirkt.From CH-PS 103 265 is a method for crushing, Crushing or squeezing any substances known at which the elements between which the millbase of the treatment is subjected, with magnetic force against each other be pressed. Roller mills are described in which the magnetically generated between the grinding rollers Pressure to reduce bearing pressures and moving Should lead masses. In the presence of magnetic substances in regrind should be the signs of wear on the grinding rollers after its formation automatically eliminated by it be that the magnetic components to the elevations be attracted and crushed, leaving a larger Wear as takes place in the wells. For separating magnetizable substances in the millbase is at least in addition a magnetizable separating roller before or after the Mahlspalt be arranged, which with one of the two Milling rollers cooperates.
Zur Verringerung der Lagerdrücke bei Wälzmühlen wird die Ausbildung eines ringförmigen Magnetfeldes in der Mahlschüssel vorgeschlagen. Ein magnetisches Feld soll durch zwei konzentrische Ringpole und eine Erregerspule gebildet werden. Auf den oberen Ringflächen rollen die Mahlwalzen ab. Eine Abtrennung von magnetisierbaren Bestandteilen aus dem Mahlbett und eine von dem Fertiggut getrennte Entfernung dieser Bestandteile aus dem Mahlraum ist nicht vorgesehen. Die Nachteile aus dem Vorhandensein von Eisenpartikeln und ähnlichen magnetisierbaren Stoffen im Mahlbett und im Mahl- und Sichtraum können deshalb nicht vermieden werden können.To reduce the bearing pressures in Wälzmühlen the Formation of an annular magnetic field in the grinding bowl proposed. A magnetic field is said to be through formed two concentric ring poles and an exciter coil become. The grinding rollers roll on the upper ring surfaces from. A separation of magnetizable components the grinding bed and a distance separate from the finished product these components from the grinding chamber is not provided. The disadvantages of the presence of iron particles and similar magnetizable substances in the grinding bed and in the grinding and visual space can therefore not be avoided can be.
Der Erfindung liegt die Aufgabe zugrunde, eine Wälzmühle, insbesondere eine Luftstrom-Wälzmühle, und ein Verfahren zu schaffen, welche auf eine außerordentlich einfache und effiziente Weise, ohne Unterbrechung des Mahlbetriebs und unter Aufrechterhaltung der Produktqualität eine Entfernung der Eisenbestandteile und weiterer Metallanteile aus dem Mahlgut im Mahlraum gewährleisten.The invention has for its object to provide a roller mill, in particular an air flow roller mill, and a method which in a very simple and efficient way, without interrupting the grinding operation and maintaining the product quality removal of the iron components and other metal components from the material to be ground in the grinding room.
Vorrichtungsmäßig wird die Aufgabe durch die Merkmale des
Anspruchs 1 und des Anspruchs 4 und verfahrensmäßig durch
die Merkmale des Anspruchs 14 gelöst. Zweckmäßige und vorteilhafte
Ausgestaltungen sind in den Unteransprüchen und
in der Figurenbeschreibung enthalten.In terms of apparatus, the task is characterized by the characteristics of
Claim 1 and
Ein Grundgedanke der Erfindung kann darin gesehen werden, die im Mahlraum, insbesondere im Mahlbett auf der Mahlschüssel vorhandenen und während der Zerkleinerung aufgeschlossenen magnetisierbaren Partikel, insbesondere Eisenpartikel, mit Hilfe wenigstens einer elektromagnetischen Einrichtung, welche im Mahlraum angeordnet ist, zu entfernen und durch die Extraktion dieser Partikel, welche insbesondere kontinuierlich erfolgen kann, ein Anreichern dieser Partikel auf dem Mahlbett zu vermeiden.A basic idea of the invention can be seen therein in the grinding room, especially in the grinding bed on the grinding bowl existing and open-minded during comminution magnetizable particles, in particular iron particles, with the help of at least one electromagnetic Device which is arranged in the grinding chamber to remove and by the extraction of these particles, which in particular can be done continuously, enriching this Avoid particles on the grinding bed.
Erfindungsgemäß ist die elektromagnetische Einrichtung eine walzenähnliche und auf dem Mahlbett abrollende Einrichtung, welche derart ausgebildet ist, dass die magnetisierbaren, insbesondere Eisenpartikel, des Mahlbettes an der Oberfläche anhaften. Mit Hilfe einer Austragseinrichtung, welche mit der walzenähnlichen elektromagnetischen Einrichtung verbunden ist und mit dieser zusammenwirkt, werden die abgeschiedenen magnetisierbaren Bestandteile von der walzenähnlichen Einrichtung entfernt und aus dem Mahlraum ausgetragen. Die Verwendung wenigstens einer walzenähnlichen, auf dem Mahlbett abrollenden elektromagnetischen Einrichtung ist wegen des geringen Reibungswiderstandes und der gleichzeitig glättenden und verdichtenden Wirkung für einen störungsfreien, effizienten Mahlprozess vorteilhaft.According to the invention, the electromagnetic device is a roller-like and rolling on the grinding bed device, which is designed such that the magnetizable, especially iron particles, the grinding bed at the surface adhere. With the help of a discharge device, which with the roller-like electromagnetic device connected is and interacts with this, the isolated magnetizable components of the roll-like Device removed and discharged from the grinding chamber. The Use of at least one roller-like, on the grinding bed rolling electromagnetic device is due the low frictional resistance and the same time smoothing and compacting effect for a trouble-free, efficient grinding process advantageous.
Grundsätzlich kann die elektromagnetische Einrichtung auch oberhalb des Mahlbetts und mit einem einstellbaren Spalt zwischen dem Mantel der walzenförmigen Einrichtung und der Mahlschüssel angeordnet sein.In principle, the electromagnetic device can also above the grinding bed and with an adjustable gap between the shell of the cylindrical device and the Grinding bowl be arranged.
In Wälzmühlen, welche beispielsweise als Überlaufmühlen verwendet werden und keinen integrierten Sichter aufweisen, kann auch eine Mahlwalze zur elektromagnetischen Abscheidung ausgebildet sein. Durch die Entfernung der Eisenpartikel, worunter nachfolgend auch andere magnetisierbaren Partikel verstanden werden sollen, werden der Verschleiß von Mahlwalzen und Mahlschüssel reduziert und die Standzeiten erhöht.In roller mills, which, for example, as overflow mills used and have no integrated classifier, can also be a grinding roller for electromagnetic separation be educated. By removing the iron particles, hereinafter also other magnetizable particles be understood, the wear of Grinding rollers and grinding bowl reduced and the service life elevated.
Besonders vorteilhaft ist es, wenigstens eine elektromagnetische Einrichtung in Luftstrom-Wälzmühlen zu installieren, welche wenigstens ein Walzenpaar, in der Regel zwei oder auch drei Walzenpaare, aufweisen. Ein Walzenpaar besteht aus einer Mahlwalze, auch Master-roller genannt, und aus einer Hilfswalze, auch Slave-Walze oder Slave-roller genannt, welche der Mahlwalze vorgeschaltet ist und das Mahlbett präpariert, insbesondere vergleichmäßigt und verdichtet, und, insbesondere bei harten und spröden Stoffen, eine optimierte, vibrationsfreie Vermahlung gewährleistet. It is particularly advantageous, at least one electromagnetic To install equipment in air flow roller mills, which at least one pair of rollers, usually two or also three pairs of rollers, have. A pair of rollers exists from a grinding roller, also called master roller, and out an auxiliary roll, also called slave roll or slave roller, which is upstream of the grinding roller and the grinding bed prepared, in particular uniformed and compacted, and, especially for hard and brittle materials, one optimized, vibration-free grinding guaranteed.
Es ist zweckmäßig, wenigstens eine Hilfswalze zur elektromagnetischen Abscheidung von magnetisierbaren Bestandteilen, insbesondere Eisenpartikeln, aus dem Mahlbett auszubilden und mit einer Austragseinrichtung zu verbinden, mit welcher diese störenden Bestandteile aus dem Mahlraum entfernt werden können.It is expedient, at least one auxiliary roll to the electromagnetic Separation of magnetisable components, in particular iron particles to form from the grinding bed and to connect with a discharge device, with which removes these interfering components from the grinding chamber can be.
In einer vorteilhaften Ausgestaltung weist die Hilfswalze einen unmagnetischen Walzenmantel und im Inneren einen regelbaren Elektromagneten, vorzugsweise mit einem Eisenkern und elektrischen Spulen auf, deren Formgebung und Anordnung zwecks Aufbau eines wirkungsvollen Magnetfeldes über einen vorgegebenen Bereich des Walzenmantels der Walzenform angepasst sind. Wenn der Eisenkern im Kreisquerschnitt gesehen, etwa über einen Winkel im Bereich von 240 bis 270 Grad reicht, werden das erforderliche Extrahieren und Anhaften der Partikel und das nachfolgende Lösen und Entfernen gewährleistet.In an advantageous embodiment, the auxiliary roll a non-magnetic roll shell and inside a controllable Electromagnet, preferably with an iron core and electric coils, their shape and arrangement in order to build up an effective magnetic field over one adjusted predetermined range of the roll shell of the roll shape are. When the iron core is seen in circular cross-section, over an angle in the range of 240 to 270 degrees enough, will be the necessary extracting and sticking the particles and the subsequent loosening and removal guaranteed.
Die Stromzuführung für die elektrischen Spulen kann zweckmäßigerweise im Bereich der Walzenachse erfolgen. Des Weiteren kann zur Regelung des Elektromagneten vorteilhaft eine Thyristorschaltung vorgesehen sein.The power supply for the electric coils may expediently take place in the region of the roll axis. Furthermore can for controlling the electromagnet advantageously a Thyristor be provided.
Die Austragseinrichtung zur Entfernung der an der elektromagnetischen Einrichtung abgeschiedenen Metallpartikel, insbesondere der Eisenpartikel, ist zweckmäßigerweise derart ausgebildet, dass die abgeschiedenen Partikel kontinuierlich aus dem Mahlraum transportiert und beispielsweise über den Leitschaufelkranz in einen darunter angeordneten Raum befördert werden können.The discharge device for the removal of the electromagnetic Device deposited metal particles, in particular the iron particles, is expediently such formed so that the deposited particles continuously transported from the grinding room and for example over the vane ring in a arranged underneath Room can be transported.
Besonders vorteilhaft ist eine Austragseinrichtung, welche einen Abstreifer, eine Förderrinne und ein Fallrohr aufweist. Der Abstreifer kann leistenförmig ausgebildet sein und zweckmäßigerweise wenigstens über die Breite der abrollenden Fläche der elektromagnetischen Einrichtung, z.B. des Mantels einer Hilfswalze, reichen. Außerdem ist es für eine störungsfreie Übernahme der Partikel zweckmäßig, wenn der Abstreifer parallel und mit einem verstellbaren Abstand zum Walzenmantel der elektromagnetisch ausgebildeten Hilfswalze angeordnet ist.Particularly advantageous is a discharge device, which a scraper, a conveyor trough and a downpipe. The scraper may be formed strip-shaped and expediently at least over the width of the rolling Surface of the electromagnetic device, e.g. of Mantels an auxiliary roll, enough. Besides, it is for one trouble-free takeover of the particles expedient if the Scrapers parallel and with an adjustable distance to the Roll shell of the electromagnetically designed auxiliary roll is arranged.
Zweckmäßigerweise ist der Abstreifer lösbar und/oder höhenverstellbar an der Förderrinne befestigt. In einer alternativen Ausbildung bilden der Abstreifer und die Förderrinne eine Einheit. Die Förderrinne mit definiert angeordnetem Abstreifer werden dann vorteilhaft derart befestigt, dass eine höhenmäßige Verstellung und eine Änderung des Spaltes zwischen dem Abstreifer und der elektromagnetischen Walze möglich ist.Conveniently, the scraper is detachable and / or height adjustable attached to the conveyor trough. In an alternative Training form the scraper and the conveyor trough one unity. The conveyor trough with defined arranged Scrapers are then advantageously fastened such that a height adjustment and a change of the gap between the wiper and the electromagnetic roller is possible.
Grundsätzlich können der Abstreifer und/oder die Förderrinne am Mühlengehäuse befestigt sein.Basically, the scraper and / or the conveyor trough be attached to the mill housing.
Für eine besonders effiziente Eisenabscheidung ist jedoch eine Befestigung an der Hilfswalze mit Elektromagnet, beispielsweise im Bereich des Schwinghebels bzw. der Walzenachse, vorteilhaft. Der Abstreifer und/oder die Förderrinne folgen dann der Bewegung der Hilfswalze und werden mit dieser auf dem Mahlbett auf und ab bewegt.However, for a particularly efficient iron separation is an attachment to the auxiliary roll with electromagnet, for example in the region of the oscillating lever or the roll axis, advantageous. The scraper and / or the conveyor trough then follow the movement of the auxiliary roll and be with this moved up and down on the grinding bed.
Die Förderrinne hat zweckmäßigerweise in Richtung einer Öffnung im Leitschaufelkranz ein Gefälle, so dass die abgestreiften Partikel aufgrund der Schwerkraftwirkung transportiert werden und, beispielsweise über ein Fallrohr, welches in einer Öffnung im Leitschaufelkranz angeordnet ist, in den Ringkanal bzw. einen Raum unterhalb des Leitschaufelkranzes gelangen. The conveyor trough has expediently in the direction of Opening in the vane ring a slope, leaving the stripped Particles transported due to gravity be and, for example via a downpipe, which is arranged in an opening in the vane ring, in the annular channel or a space below the vane ring reach.
Um eine Gasströmung in dem Fallrohr aus dem Ringkanal zu verhindern, ist es zweckmäig, das Fallrohr mit einer regelbaren Absperrung zu verschließen. Beispielsweise kann eine gewichtsbelastete Pendelklappe installiert sein, welche bei einer vorgebbaren Belastung durch angefallenen Partikel in Richtung Ringkanal aufgeschwenkt wird.To a gas flow in the downpipe from the annular channel to prevent, it is expedient to the downpipe with a controllable Close the barrier. For example, a weight-loaded pendulum flap be installed, which at a predeterminable load of accumulated particles in Direction ring is swung open.
Das erfindungsgemäße Verfahren zur Vermahlung von Stoffen mit magnetisierbaren, insbesondere eisenhaltigen Bestandteilen, beispielsweise Schlacken, sieht vor, dass zusätzlich zu einer elektromagnetischen Abscheidung vor dem Mahlprozess in einer Wälzmühle, insbesondere in einer Luftstrom-Wälzmühle, eine weitere elektromagnetische Abscheidung im Mahlraum durchgeführt wird, um die im Mahlprozess aufgeschlossenen, frei vorliegenden Partikel zu extrahieren und eine Anreicherung dieser Partikel auf der Mahlschüssel zu vermeiden.The inventive method for grinding of substances with magnetisable, in particular iron-containing components, For example, slags, that provides in addition to an electromagnetic separation before the grinding process in a roller mill, in particular in an air flow roller mill, another electromagnetic deposition In the grinding room is carried out to the in the grinding process to extract digested, freely present particles and an accumulation of these particles on the grinding bowl to avoid.
Erfindungsgemäß wird die elektromagnetische Abscheidung im Mahlraum mit Hilfe einer walzenförmigen Einrichtung, insbesondere einer Hilfswalze, durchgeführt. Zusätzlich zur Mahlbettpräparierung kann mit wenigstens einer walzenförmigen, auf dem Mahlbett abrollenden elektromagnetischen Einrichtung, beispielsweise einer Hilfswalze, welche mit einem regelbaren Elektromagneten versehen ist, eine Extraktion der magnetisierbaren Partikel, insbesondere der Eisenpartikel, aus dem Mahlbett und dem Mahlraum erfolgen. Dabei kann eine kontinuierliche Abscheidung an der elektromagnetisch ausgebildeten Hilfswalze besonders vorteilhaft durchgeführt werden.According to the invention, the electromagnetic deposition in Grinding chamber by means of a roller-shaped device, in particular an auxiliary roll performed. In addition to Mahlbettpreparierung can with at least one cylindrical, on the grinding bed rolling electromagnetic device, for example, an auxiliary roll, which with a controllable electromagnet is provided, an extraction the magnetizable particles, in particular the iron particles, take place from the grinding bed and the grinding chamber. It can a continuous deposition at the electromagnetic trained auxiliary roll performed particularly advantageous become.
Die an der elektromagnetisch ausgebildeten Hilfswalze abgeschiedenen Partikel werden danach vorteilhaft mit Hilfe einer entsprechenden Austragsvorrichtung, abgestreift, über den Leitschaufelkranz dem Ringkanal der Luftstrom-Wälzmühle zugeführt und zusammen mit den über den Mahlschüsselrand geschleuderten, in den Ringraum gelangenden Grießen aus der Mühle ausgeschleust und mechanisch, insbesondere mit einem Umlaufbecherwerk, zur Aufgabeeinrichtung, z.B. zu einem Wiegeband für das Aufgabegut, gefördert. Um die Metallpartikel von den Grießen zu trennen, wird eine weitere Metallabscheidung, insbesondere eine elektromagnetische Abscheidung, durchgeführt. Die Grieße werden dann in der Regel mit neuem Aufgabegut der Luftstrom-Wälzmühle wieder zugeführt.The deposited on the electromagnetically trained auxiliary roll Particles are then advantageously using a corresponding discharge device, stripped over the vane ring the annular channel of the air flow roller mill fed and along with the over the Mahlschüsselrand thrown, reaching into the annulus semolina from the Mill discharged and mechanically, especially with a Reciprocating bucket, for feeder, e.g. to a Weighing belt for the feed material, promoted. To the metal particles to separate from the semolina, another metal deposit, in particular an electromagnetic separation, carried out. The grits are then usually with fed new feed of the air flow roller mill again.
Es ist zweckmäßig, wenn die elektromagnetische Einrichtung in der Hilfswalze über eine Thyristorschaltung geregelt wird und die Mühle zunächst normal, d.h. ohne den Elektromagnet einzuschalten, angefahren wird und erst nach Inbetriebnahme des Regelkreises für die Hilfswalzendrehzahl der Elektromagnet eingeschalten wird. Grundsätzlich kann der Elektromagnet über das Drehzahlsignal der Hilfswalzen geregelt werden.It is useful if the electromagnetic device regulated in the auxiliary roll via a thyristor and the mill is initially normal, i. without the electromagnet turn on, is started and only after commissioning of the auxiliary roller speed control loop Electromagnet is turned on. Basically, the Electromagnet regulated by the speed signal of the auxiliary rollers become.
Die Vorteile der erfindungsgemäßen Wälzmühle bzw. Luftstrom-Wälzmühle und des erfindungsgemäßen Verfahrens bestehen darin, dass eine kontinuierliche und regelbare Abscheidung der magnetisierbaren Bestandteile, insbesondere der Eisenpartikel, während des Mahlprozesses und Entfernung aus dem Mahlraum ohne Unterbrechung des Mahlbetriebs durchgeführt werden kann.The advantages of the inventive roller mill or air flow roller mill and the method of the invention in that a continuous and controllable deposition the magnetizable components, in particular the Iron particles, during the milling process and removal the grinding chamber carried out without interrupting the grinding operation can be.
Bei Verwendung einer Hilfs- bzw. Slave-Walze bestehen die Vorteile, dass im Wesentlichen die vorhandenen Bauteileinrichtungen verwendet werden können. Aufgrund der kontinuierlichen Abscheidung und des Austrages aus dem Mahlraum und dem Raum unterhalb der Mahlschüssel ist insgesamt ein geringerer äußerer Umlauf zu verzeichnen, und die Anlage für die zurückzuführenden Grieße, auch Reject-Anlage genannt, kann kleiner dimensioniert werden. Des Weiteren eignen sich die abgeschiedenen und ausgetragenen Eisenpartikel als Material zum Sandstrahlen. Ein weiterer wesentlicher Vorteil ist die Vermeidung von Verschleißerscheinungen an den Mahlwalzen, Hilfswalzen und an der Mahlbahn und der damit verbundenen Reparaturkosten, Stillstandzeiten etc.When using an auxiliary or slave roller, the Advantages that essentially the existing component devices can be used. Because of the continuous Separation and discharge from the grinding chamber and the space below the grinding bowl is a total of one lesser outer orbit, and the plant for the reclaimed grits, also called reject plant, can be sized smaller. Furthermore are suitable the separated and discharged iron particles as a material for sandblasting. Another essential The advantage is the avoidance of signs of wear at the grinding rolls, auxiliary rolls and at the grinding track and the related repair costs, downtime etc.
Die Erfindung wird nachstehend anhand einer Zeichnung weiter erläutert; in dieser zeigen in einer stark schematisierten Darstellung
- Fig. 1
- eine Luftstrom-Wälzmühle mit einer elektromagnetisch ausgebildeten Hilfswalze;
- Fig. 2
- eine stark schematisierte Draufsicht auf die Mahlschüssel der Luftstrom-Wälzmühle nach Fig. 1;
- Fig. 3
- einen stark schematisierten Querschnitt durch eine elektromagnetisch ausgebildete Hilfswalze mit Austragsvorrichtung und
- Fig. 4
- einen Ausschnitt einer Luftstrom-Wälzmühle mit elektromagnetisch ausgebildeter Hilfswalze und Austragsvorrichtung.
- Fig. 1
- an air flow roller mill having an electromagnetically formed auxiliary roller;
- Fig. 2
- a highly schematic plan view of the grinding bowl of the air flow roller mill of Fig. 1;
- Fig. 3
- a highly schematic cross section through an electromagnetically designed auxiliary roll with discharge and
- Fig. 4
- a section of an air flow roller mill with electromagnetically trained auxiliary roll and discharge.
Fig. 1 zeigt eine LOESCHE-Luftstrom-Wälzmühle 2, welche besonders
prädestiniert ist für die Zement- und Hüttensandmahlung
und mit zwei Walzenpaaren 3, 15 versehen ist. Aus
Gründen der Übersichtlichkeit sind in Fig. 1 zwei Mahlwalzen
3, jedoch nur eine Hilfswalze 15 dargestellt. Aus Fig.
2 gehen jedoch die zwei Walzenpaare, welche jeweils aus einer
Mahlwalze (Master-roller) 3 und einer Hilfswalze (Slave-roller)
15 bestehen, hervor. Fig. 1 shows a LOESCHE air
Die Mahlwalzen 3 und Hilfswalzen 15 rollen auf einem Mahlbett
ab, welches vom Aufgabegut auf einer Mahlbahn einer
rotierenden Mahlschüssel 4 gebildet wird. Die Mahlschüssel
4, welche über einen Antrieb 8 in Rotation versetzt wird,
ist von einem Leitschaufelkranz 6 umgeben, über welchen ein
Gasstrom, insbesondere Luft, aus einer Ringleitung 7 in den
Mahlraum 5 strömt. Das Aufgabegut, beispielsweise Hochofenschlacke
bzw. ein Gemisch von Zementklinker, Gips und
Schlacke, wird über Dosiereinrichtungen, eine Magnet-Abscheidevorrichtung
und eine Aufgabeeinrichtung (nicht dargestellt)
der Luftstrom-Wälzmühle aufgegeben, gelangt auf
die Mahlschüssel 4 und wird zwischen den federnd angepressten
Mahlwalzen 3 und der Mahlschüssel 4 zerkleinert. Die
über einen Zuführkanal 17 und den Ringkanal 7 durch den
Leitschaufelkranz 16 in den Mahlraum 5 einströmende Luft
befördert das Gemisch aus Fein- und Grobgut in einen Sichtraum
13 und in den Bereich eines Sichters 9. Grobgut wird
abgewiesen und fällt auf die Mahlschüssel 4 zurück, während
Feingut über einen Feingutaustrag 14 ausgetragen wird. In
Fig. 1 sind außerdem das Mühlengehäuse 12, die Schwinghebel
10 der zwei Mahlwalzen 3 und eine hydraulische Zylindereinrichtung
11 bei der linken Mahlwalze 3 gezeigt, welche die
federnde Anpressung der Mahlwalzen 3 bewirken.The grinding
Die Hilfswalzen 15 weisen im vorliegenden Ausführungsbeispiel
gemäß Fig. 1 und 2 einen geringeren Durchmesser als
die Mahlwalzen 3 auf und sind im Gegensatz zu den Mahlwalzen
3 nicht kraftbeaufschlagt, sondern liegen mit ihrem Eigengewicht
auf dem Mahlbett auf, wobei eine reine Rollbewegung
oder eine durch eine gezielte Gleitbewegung überlagerte
Rollbewegung erfolgt. Dabei präpariert jede Hilfswalze
15 das Mahlbett für die - in Drehrichtung der Walzenschüssel
5 gesehen - hinter der Hilfswalze 15 angeordnete Mahlwalze
3, welche die Zerkleinerung des Mahlgutes durchführt.
Zur Ausbildung, Anordnung und Wirkung der Hilfswalzen wird
auf das deutsche Patent 39 21 986 verwiesen.The
Fig. 2 zeigt, dass die Hilfswalze 15 wie die Mahlwalzen 3
konisch ausgebildet sind und ihre Breite etwa der Mahlbahnbreite
entspricht.Fig. 2 shows that the
Wenigstens eine Hilfswalze 15 ist zur elektromagnetischen
Abscheidung von magnetisierbaren Anteilen, insbesondere Eisenanteilen,
aus dem zu zerkleinernden Mahlgut ausgebildet,
um eine Anreicherung dieser Bestandteile auf der Mahlschüssel
4 und einen damit einhergehenden Verschleiß der Mahleinrichtungen
zu vermeiden.At least one
Fig. 3 zeigt eine zur elektromagnetischen Abscheidung ausgebildete
Hilfswalze 15 im Querschnitt. Pfeil A gibt die
Drehrichtung der Hilfswalze 15 und Pfeil B die Richtung der
rotierenden Mahlschüssel 4 an. Das zu zerkleinernde Mahlgut
bzw. das Mahlbett ist nicht dargestellt. Die Hilfswalze 15
weist einen Walzenmantel 23 aus einem unmagnetischen Werkstoff
auf und ist im Inneren mit einem Eisenkern 21 und
elektrischen Spulen 22 versehen. Der Eisenkern 21 ist dem
konisch ausgebildeten Walzenmantel 23 der Hilfswalze 15 angepasst
und reicht - im Querschnitt gesehen - etwa über
zwei Drittel der Mantelfläche, so dass die zu entfernenden
Metall-, insbesondere Eisenpartikel, vom Mahlbett auf der
Mahlschüssel 4 aufgenommen werden und an dem rotierenden
Walzenmantel 23 haftend, bis zu einer Austragseinrichtung
30 transportiert werden. Die Austragseinrichtung 30 geht
auch aus Fig. 4 hervor. In Fig. 3 sind ein Abstreifer 31
und eine Förderrinne 32 stark schematisiert gezeigt. Fig. 3 shows a trained for electromagnetic separation
Die elektromagnetische Einrichtung 20 im Innern der Hilfswalze
15 weist drei elektrische Spulen 22 auf, die in einem
Winkelabstand von etwa 120° radial angeordnet sind und
mit dem Eisenkern 21 den stationären Elektromagneten bilden,
durch den die auf der Mahlschüssel befindlichen Eisenpartikel
angezogen werden und an dem rotierenden Walzenmantel
23 haftend, bis zu einem magnetfeien Bereich und der
hier angeordneten Austragsvorrichtung 30 gelangen.The
Es besteht auch die Möglichkeit, die elektromagnetische
Einrichtung 20 und den Walzenmantel 23 als rotierende Einheit
auszubilden und in Abhängigkeit von der Stärke des Magnetfeldes
den Abstreifer derart auszubilden und anzuordnen,
dass ein Lösen der Partikel gewährleistet ist.There is also the possibility of the
Aus Fig. 4 gehen der konisch geformte Eisenkern 21 nahe dem
Walzenmantel 23 der Hilfswalze 15 und die Anordnung des Abstreifers
31 an der Förderrinne 30 hervor. Der Abstreifer
31 ist leistenförmig ausgebildet und parallel sowie mit einem
geringen Abstand zum Walzenmantel 23 an der Förderrinne
32 befestigt.From Fig. 4 go the
Die Förderrinne 32 ist mit einem leichten Gefälle in Richtung
Mühlengehäuse 12 bzw. Leitschaufelkranz 7 angeordnet
und mündet in ein Fallrohr 33. Das Fallrohr ist in einer
Öffnung 35 des Leitschaufelkranzes 7 angeordnet und reicht
bis zu dem Ringkanal 7. Die Befestigung des Fallrohrs 33
kann über Befestigungselemente 36 im Bereich von benachbarten
Leitschaufeln des Leitschaufelkranzes 6 oder am Mühlengehäuse
12 erfolgen. Das Fallrohr 33 ist am unteren Ende
mit einer Verschlussklappe 34 versehen, die als eine gewichtsbelastete
Pendelklappe ausgebildet ist. The
Die an der Hilfswalze 15 abgeschiedenen magnetisierten Partikel
und insbesondere Eisenpartikel werden nur im Bereich
des Eisenkerns 21 festgehalten und gelangen danach über den
Abstreifer 31 in die Förderrinne 32, danach in das Fallrohr
33 und in den Ringkanal 7. In dem Ringkanal 7 bzw. einen
Raum unterhalb des Mahlraums sammeln sich auch die Grobgutpartikel
bzw. Grieße, die weder von den Mahlwalzen 3 zum
Zerkleinern erfasst wurden, noch im Luftstrom zum Sichter 9
gelangt sind.The deposited on the
Zusammen mit diesen Grießen werden die abgeschiedenen Eisenpartikel aus der Luftstrom-Wälzmühle 2 ausgeschleust (nicht gezeigt) und werden, in der Regel auf einem Wiegeband mit Metallabscheider, von den Grießen getrennt, welche zusammen mit neuem Aufgabegut der Luftstrom-Wälzmühle wieder zugeführt werden (nicht gezeigt).Together with these semolina become the deposited iron particles discharged from the air flow roller mill 2 (not shown) and are usually on a weigh belt with metal separator, separated from the semolina, which together with new Aufgabegut the air flow roller mill again be supplied (not shown).
Claims (20)
- Roller mill, comprising
a milling area (5) in which at least one grinding roller (3) rolls on a grinding path of a grinding pan (4) and
an electromagnetic device (20) for separating magnetizable constituents, particularly iron particles from the grinding material is provided,
characterized in that
the electromagnetic device (20) has a roller-like construction and rolls on the grinding bed and
that the electromagnetic device (20) is connected to a discharge mechanism (30) for removing the separated, magnetizable constituents, particularly the iron particles from the milling area (5). - Roller mill according to claim 1,
characterized in that
a grinding roller (3) is constructed for electromagnetic separation and is provided with an electromagnetic device (20) . - Roller mill according to claim 1,
characterized in that
the roller-like, electromagnetic device (20) is positioned with an adjustable gap between the jacket of the roller-like, electromagnetic device and the grinding path. - Air-swept roller mill, comprising
a rotary grinding pan (4), a vane ring (6) located between the grinding pan (4) and the mill casing (12), a ring duct (7) below the vane ring (6) and an integrated classifier (9) above the milling area (5), at least one grinding roller (3) mounted in rotary manner and which can be resiliently pressed against grinding material on the grinding path of the grinding pan (4), and at least one slave roller (15),
characterized in that
the slave roller (15) is constructed for separating magnetizable constituents, particularly iron particles from the milling area (5) and provided with an electromagnetic device (20) and that a discharge mechanism (30) is provided for removing the magnetizable constituents, particularly the iron particles from the slave roller (15) and for discharging the same from the milling area (5). - Air-swept roller mill according to claim 4,
characterized in that
the slave roller (15) has a nonmagnetic roller jacket (23) and as electromagnetic device (20) a regulatable electromagnet with an iron core (21) and electrical coils (22) are located in the interior of the slave roller (15). - Air-swept roller mill according to claim 5,
characterized in that
the power supply for the electrical coils (22) takes place in the vicinity of the roller axis (24) and for regulating the electromagnetic device (20) a thyristor circuit is provided. - Air-swept roller mill according to one of the claims 4 to 6,
characterized in that
as the discharge mechanism (30) are provided at least one stripper (31), a conveyor trough (32) and a downcomer (33) . - Air-swept roller mill according to claim 7,
characterized in that
the stripper (31) has a ledge-shaped construction and is positioned virtually parallel to the roller jacket (23) of the slave roller (15) on the conveyor trough (32) and that the conveyor trough (32) extends roughly to the vane ring (6) . - Air-swept roller mill according to claim 8,
characterized in that
an opening (35) is formed in the vane ring (6) and that the downcomer (33) extends through said opening (35) and connects the conveyor trough (32) to the ring duct (7). - Air-swept roller mill according to one of the claims 7 to 9,
characterized in that
a closing flap (34) for the gas flow from the ring duct (7) is provided in the downcomer (33). - Air-swept roller mill according to claim 10,
characterized in that
the closing flap (34) in the downcomer (33) is a weighted pendulum flap. - Air-swept roller mill according to one of the claims 7 to 11,
characterized in that
at least the stripper (31) and/or the conveyor trough (32) are arranged in vertically adjustable manner. - Air-swept roller mill according to one of the claims 7 to 12,
characterized in that
at least the stripper (31) and/or the conveyor trough (32) are fixed to the roller axis (24) or the rocking lever (10) of the slave roller (15). - Method for milling materials with magnetizable, particularly iron-containing constituents, e.g. slag, in which the feedstock, following the separation of the magnetizable constituents, particularly iron constituents, is supplied to an air-swept roller mill and is comminuted therein,
characterized in that
in the milling area is carried out a further electromagnetic separation, the magnetizable particles, particularly the iron particles, decomposed during comminution being continuously separated on a roller-shaped, electromagnetic device rolling on the grinding bed, after which stripping takes place from the roller-shaped, electromagnetic device, followed by discharge from the air-swept roller mill via the vane ring and annular space. - Method according to claim 14,
characterized in that
the magnetizable particles, particularly the iron particles adhering to the roller-shaped, electromagnetic device are mechanically stripped and, utilizing the gravity action, e.g. in a conveyor trough are supplied to the annular space. - Method according to claim 14 or 15,
characterized in that
the magnetizable particles, particularly iron particles, and the coarse particles passing over the grinding pan edge into the annular space below the vane ring, are mechanically discharged from the annular space and conveyed in a conveyor to the feedstock, before which in an electromagnetic separation operation the magnetizable particles, particularly iron particles are separated and the remaining coarse particles are supplied for regrinding to the feedstock. - Method according to one of the claims 14 to 16,
characterized in that
as roller-shaped, electromagnetic device is used a grinding/master roller or an auxiliary slave roller and the electrical lines are guided in the vicinity of the roller axis. - Method according to one of the claims 14 to 17,
characterized in that
the electromagnetic device is controlled by means of a thyristor circuit. - Method according to claim 17 or 18,
characterized in that
when using a slave roller, the roller mill is initially started and the electromagnetic device is switched on as a function of the control loop for the slave roller speed. - Method according to claim 19,
characterized in that
the electromagnetic device is controlled by means of the slave roller speed signal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10141414A DE10141414B4 (en) | 2001-08-23 | 2001-08-23 | Roller mill, airflow roller mill, and method for grinding materials with magnetizable, in particular iron-containing components, for example slags |
| DE10141414 | 2001-08-23 | ||
| PCT/EP2002/008309 WO2003018203A1 (en) | 2001-08-23 | 2002-07-25 | Roller grinding mill and method for grinding materials that contain magnetizable components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1419010A1 EP1419010A1 (en) | 2004-05-19 |
| EP1419010B1 true EP1419010B1 (en) | 2005-12-07 |
Family
ID=7696417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02764781A Expired - Lifetime EP1419010B1 (en) | 2001-08-23 | 2002-07-25 | Roller grinding mill and method for grinding materials that contain magnetizable components |
Country Status (11)
| Country | Link |
|---|---|
| US (2) | US20040182955A1 (en) |
| EP (1) | EP1419010B1 (en) |
| JP (1) | JP2005500160A (en) |
| KR (1) | KR100893640B1 (en) |
| CN (1) | CN1256183C (en) |
| AT (1) | ATE311937T1 (en) |
| CA (1) | CA2446210C (en) |
| DE (2) | DE10141414B4 (en) |
| DK (1) | DK1419010T3 (en) |
| ES (1) | ES2254727T3 (en) |
| WO (1) | WO2003018203A1 (en) |
Families Citing this family (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100391615C (en) * | 2004-12-28 | 2008-06-04 | 北京华诺维科技发展有限责任公司 | Disc type magnetic roll squeezer |
| DE102005045591A1 (en) * | 2005-09-23 | 2007-03-29 | Polysius Ag | Raw material e.g. granular material, separating device for use in grinding plant, has static separator with aeration base through which gas flows, where base is arranged in vertical direction and has specific ratio of breadth to height |
| DK200801048A (en) * | 2008-07-30 | 2010-01-31 | Smidth As F L | Roller mill for grinding particulate material |
| RU2535886C2 (en) | 2010-03-05 | 2014-12-20 | ЛЁШЕ ГмбХ, Германия | Dressing of slags containing high-quality steels and iron for extraction of metals |
| JP5645468B2 (en) * | 2010-05-14 | 2014-12-24 | 三菱重工業株式会社 | Biomass crusher and biomass / coal co-firing system |
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| DK2637790T3 (en) * | 2010-12-16 | 2014-08-11 | Loesche Gmbh | Process for grinding milling material and rolling mill |
| CN102151604B (en) * | 2010-12-27 | 2015-02-25 | 天津水泥工业设计研究院有限公司 | Iron removal device in vertical roller mill |
| CN102872944B (en) * | 2012-10-17 | 2014-08-06 | 程国铭 | Closed loop balance wheel pulse sand making machine and sand making method |
| WO2014117031A1 (en) | 2013-01-24 | 2014-07-31 | Lp Amina Llc | Classifier |
| CN103506203A (en) * | 2013-10-12 | 2014-01-15 | 烟台市三立工业有限公司 | Micronizer with horizontal micronizing head |
| JP2015142876A (en) * | 2014-01-31 | 2015-08-06 | 宇部興産株式会社 | Vertical crusher |
| CN105013560A (en) * | 2014-10-14 | 2015-11-04 | 大峘集团有限公司 | Slag vertical mill with mill interior deironing function |
| CN104338934B (en) * | 2014-10-17 | 2016-08-31 | 成都泰美克晶体技术有限公司 | A kind of tumbling mill of Novel belt blowing device |
| JP6352162B2 (en) * | 2014-11-28 | 2018-07-04 | 三菱日立パワーシステムズ株式会社 | Vertical roller mill |
| CN104588191B (en) * | 2015-01-13 | 2017-05-10 | 上海意丰机电科技开发有限公司 | Medium-speed abrasive flow field optimization method |
| DE102015203856A1 (en) * | 2015-03-04 | 2016-12-15 | Thyssenkrupp Ag | Vertical roller mill |
| US10010889B1 (en) * | 2015-06-01 | 2018-07-03 | Flsmidth A/S | Vertical roller mill |
| CN105381880A (en) * | 2015-11-27 | 2016-03-09 | 中冶南方工程技术有限公司 | Iron removing device of steel slag vertical mill and iron removing method of steel slag vertical mill |
| US10500592B2 (en) * | 2016-03-24 | 2019-12-10 | Schenck Process Llc | Roller mill system with rejects removal system |
| CN105854996A (en) * | 2016-06-27 | 2016-08-17 | 重庆渝南科技股份有限公司 | Working method of automatic separating and pulverizing device |
| CN106000616A (en) * | 2016-06-30 | 2016-10-12 | 湖州丰盛新材料有限公司 | Hot air circulation type powder selecting device |
| WO2018016104A1 (en) * | 2016-07-21 | 2018-01-25 | 株式会社Ihi | Vertical roller mill |
| WO2018160408A1 (en) * | 2017-03-03 | 2018-09-07 | X Traxion, Llc | Extraction of compounds using a pulsed electric field |
| CN106732970A (en) * | 2017-03-18 | 2017-05-31 | 惠州兴鑫涂料化工有限公司 | A kind of printing-ink intelligence grinder |
| CN106902926B (en) * | 2017-04-26 | 2019-01-22 | 郑州大学 | One kind pulverizing formula winnowing machine |
| JP6982467B2 (en) * | 2017-10-27 | 2021-12-17 | ホソカワミクロン株式会社 | Powder processing equipment |
| CN108187827A (en) * | 2018-02-01 | 2018-06-22 | 先拓宏儒新材料（江苏）有限公司 | A kind of slag fine powder mill vertical mill for removing RO phase mineral |
| CN109465071B (en) * | 2019-01-16 | 2020-12-18 | 王微静 | Grain milling machine |
| CN112044497B (en) * | 2020-08-26 | 2021-11-16 | 湖南环城高科农业发展有限公司 | Rice mill capable of improving rice milling rate and avoiding over-grinding |
| CN112452399B (en) * | 2020-10-30 | 2021-09-21 | 中核混凝土股份有限公司 | Jaw crusher for garbage treatment and use method |
| CN112427122B (en) * | 2020-11-05 | 2021-11-23 | 周茂正 | Amplitude formula scorpion milling equipment |
| CN117654677B (en) * | 2024-01-30 | 2024-05-03 | 中建材佳星玻璃(黑龙江)有限公司 | Glass grinds deironing device |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH103265A (en) * | 1923-03-14 | 1924-02-01 | Krupp Ag | Process and device for crushing, crushing or pressing out any material. |
| US2785220A (en) | 1951-11-10 | 1957-03-12 | Rauland Corp | Monochrome to color converter system |
| DE2015073C3 (en) * | 1970-03-28 | 1974-05-22 | Bayer Ag, 5090 Leverkusen | Process for processing reduced ilmenite or slag containing titanium dioxide |
| US3951347A (en) | 1972-09-21 | 1976-04-20 | Polysius Ag | Apparatus for crushing material containing particles that are hard to pulverize |
| US4174508A (en) * | 1978-05-10 | 1979-11-13 | Westinghouse Air Brake Company | Relay latching apparatus |
| JPS54158629A (en) * | 1978-06-05 | 1979-12-14 | Hitachi Ltd | Controlling device of thyristor motor |
| US4420390A (en) * | 1982-01-25 | 1983-12-13 | Ronald Carr | Magnetic separator for particulates |
| US4442582A (en) * | 1982-06-21 | 1984-04-17 | At&T Technologies, Inc. | Method of reclaiming component materials |
| DE8425837U1 (en) * | 1984-08-31 | 1984-11-22 | Krupp Polysius Ag, 4720 Beckum | Roller mill |
| US4803061A (en) * | 1986-12-29 | 1989-02-07 | Texaco Inc. | Partial oxidation process with magnetic separation of the ground slag |
| US4896836A (en) * | 1988-12-30 | 1990-01-30 | Sprout-Bauer, Inc. | Rotary feeder wth metal removing means |
| DE3921986C1 (en) * | 1989-07-04 | 1990-10-25 | Loesche Gmbh, 4000 Duesseldorf, De | |
| US5244157A (en) * | 1989-07-04 | 1993-09-14 | Loesche Gmbh | Air flow rolling mill |
| US5676318A (en) | 1994-03-09 | 1997-10-14 | Nec Corporation | Method of recovering valuable substances from printed circuit board |
| US5975442A (en) * | 1998-09-02 | 1999-11-02 | Purser; Brian | Cable granulator |
| FR2785220B1 (en) * | 1998-11-02 | 2001-01-12 | Soc D Const De Machines De Rec | PROCESS FOR THE TREATMENT AND RECYCLING OF TIRES, ESPECIALLY AND THE INSTALLATION FOR IMPLEMENTING THE PROCESS |
| JP2003010710A (en) * | 2001-07-03 | 2003-01-14 | Ishikawajima Harima Heavy Ind Co Ltd | Crushing method for manufacturing crushed materials having different particle sizes simultaneously and roller mill used therefor |
| JP4376566B2 (en) * | 2003-07-16 | 2009-12-02 | カワサキプラントシステムズ株式会社 | Vertical mill and method for determining the shape of its grinding surface |
-
2001
- 2001-08-23 DE DE10141414A patent/DE10141414B4/en not_active Expired - Fee Related
-
2002
- 2002-07-25 EP EP02764781A patent/EP1419010B1/en not_active Expired - Lifetime
- 2002-07-25 US US10/483,401 patent/US20040182955A1/en not_active Abandoned
- 2002-07-25 CN CNB028165144A patent/CN1256183C/en not_active Expired - Fee Related
- 2002-07-25 DK DK02764781T patent/DK1419010T3/en active
- 2002-07-25 WO PCT/EP2002/008309 patent/WO2003018203A1/en active IP Right Grant
- 2002-07-25 ES ES02764781T patent/ES2254727T3/en not_active Expired - Lifetime
- 2002-07-25 DE DE50205216T patent/DE50205216D1/en not_active Expired - Lifetime
- 2002-07-25 AT AT02764781T patent/ATE311937T1/en not_active IP Right Cessation
- 2002-07-25 JP JP2003522709A patent/JP2005500160A/en active Pending
- 2002-07-25 CA CA002446210A patent/CA2446210C/en not_active Expired - Fee Related
- 2002-07-25 KR KR1020047001676A patent/KR100893640B1/en not_active IP Right Cessation
-
2005
- 2005-11-02 US US11/264,013 patent/US7350727B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1547509A (en) | 2004-11-17 |
| KR20040035710A (en) | 2004-04-29 |
| DE50205216D1 (en) | 2006-01-12 |
| DE10141414B4 (en) | 2004-03-04 |
| WO2003018203A1 (en) | 2003-03-06 |
| JP2005500160A (en) | 2005-01-06 |
| CA2446210C (en) | 2008-07-22 |
| US7350727B2 (en) | 2008-04-01 |
| DK1419010T3 (en) | 2006-03-27 |
| EP1419010A1 (en) | 2004-05-19 |
| US20060049288A1 (en) | 2006-03-09 |
| DE10141414A1 (en) | 2003-03-13 |
| US20040182955A1 (en) | 2004-09-23 |
| CN1256183C (en) | 2006-05-17 |
| KR100893640B1 (en) | 2009-04-17 |
| ATE311937T1 (en) | 2005-12-15 |
| CA2446210A1 (en) | 2003-03-06 |
| ES2254727T3 (en) | 2006-06-16 |
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