EP0565571B1 - Vertikale prallmühle mit gutnebenaufgabe - Google Patents

Vertikale prallmühle mit gutnebenaufgabe Download PDF

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Publication number
EP0565571B1
EP0565571B1 EP92902154A EP92902154A EP0565571B1 EP 0565571 B1 EP0565571 B1 EP 0565571B1 EP 92902154 A EP92902154 A EP 92902154A EP 92902154 A EP92902154 A EP 92902154A EP 0565571 B1 EP0565571 B1 EP 0565571B1
Authority
EP
European Patent Office
Prior art keywords
grinding
rotor
inlet
region
ground material
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
Application number
EP92902154A
Other languages
English (en)
French (fr)
Other versions
EP0565571A1 (de
Inventor
Alastair Scott Murray
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.)
QED International Ltd
Original Assignee
QED International Ltd
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 QED International Ltd filed Critical QED International Ltd
Priority to EP95106823A priority Critical patent/EP0669166B1/de
Publication of EP0565571A1 publication Critical patent/EP0565571A1/de
Application granted granted Critical
Publication of EP0565571B1 publication Critical patent/EP0565571B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C2013/1885—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate of dead bed type

Definitions

  • GB-A-2120112 discloses an apparatus for wetting and grinding gypsum. Dry powdered material is supplied from above to a rotor, which has impactor pins on its circumference. Water is injected into the rotor through a nozzle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Coating Apparatus (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Paints Or Removers (AREA)
  • Lubricants (AREA)
  • Soft Magnetic Materials (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (10)

  1. Vertikale Prallmahlvorrichtung aufweisend:
    einen Einlauftrichter (170), der einen ersten Einlaß für Beschickungsmaterial begrenzt;
    einen Rotor (179);
    wobei der Einlauftrichter derart angeschlossen ist, daß Einlaßbeschickungsmaterial direkt zu dem Rotor gefördert wird und von dem Rotor nach außen in einen Feinzerkleinerungsbereich (180) geschleudert wird;
    gekennzeichnet durch
    einen zweiten Einlaß für in einer Flüssigkeit gefördertes Beschickungsmaterial; und
    eine Umfangsverteilungseinrichtung (172) mit einem ersten Bereich (185), der mit dem zweiten Einlaß in Verbindung steht und um und über dem Rotor angeordnet ist, und einem zweiten Bereich (188), der mit dem ersten Bereich in Verbindung steht, so daß Einlaßbeschickungsmaterial von dem zweiten Einlaß aus dem ersten Bereich in den zweiten Bereich einströmt und dann in den Feinzerkleinerungsbereich hinunterfällt, ohne in den Rotor zu gelangen.
  2. Vorrichtung nach Anspruch 1, welche im Feinzerkleinerungsbereich mit Scherplatten oder einem Mahlkranz versehen ist.
  3. Mahlvorrichtung nach Anspruch 1 oder 2, mit einem Auslaß für zerkleinertes Material und weiter aufweisend:
    einen Klassifikator (25) zum Absondern von zu großem zerkleinertem Material von aus der Prallvorrichtung entnommenem Material;
    eine erste Zuleitung zum Transportieren von zerkleinertem Material von dem Auslaß zu dem Klassifikator; und
    eine zweite Zuleitung (27, 22) zum Zurückführen von abgesondertem, zu großem zerkleinertem Material zu der Prallvorrichtung, wobei die erste und zweite Zuleitung zum Transportieren von zerkleinertem Material in einer Flüssigkeit geeignet sind.
  4. Vorrichtung nach Anspruch 3, wobei ein erster Anteil des zu großen zerkleinerten Materials über den ersten Einlaß zu der Prallvorrichtung zurückgeführt werden kann und ein zweiter Anteil des zu großen zerkleinerten Materials über den zweiten Einlaß zu der Prallvorrichtung zurückgeführt werden kann.
  5. Vorrichtung nach Anspruch 3 oder 4, wobei in der zweiten Zuleitung eine Steuervorrichtung, wie ein Ventil (28), vorgesehen ist, wodurch ein Variieren des relativen Volumens des ersten und zweiten Anteils ermöglicht wird.
  6. Vorrichtung nach Anspruch 3, 4 oder 5, wobei das zerkleinerte Material zu einem Flüssigkeit enthaltenden Tank (43) geleitet wird und der Tank mit einer Einrichtung zum Trennen des zerkleinerten Materials in einen groben Anteil mit relativ großen Partikelgrößen und einen feinen Anteil mit relativ kleinen Partikelgrößen versehen ist, wobei der grobe Anteil zum Eingang der Vorrichtung zurückgeführt wird und der feine Anteil zu einer Klassifiziervorrichtung geleitet wird, um den feinen Anteil in einen ersten Anteil mit Partikeln in gewünschter Größe und einen zweiten Anteil mit zu großen Partikeln, die zum Eingang der Vorrichtung zurückgeführt werden, zu trennen.
  7. Vorrichtung nach Anspruch 6, wobei der Flüssigkeit enthaltende Tank mit einer derart einstellbaren Überlaufvorrichtung (45) versehen ist, daß der feine Anteil des zerkleinerten Materials zu einem zweiten Tank geleitet wird, wobei der zweite Tank mit einer Pumpe versehen ist, um Material an die Klassifiziervorrichtung zu liefern.
  8. Vertikale Prallmahlvorrichtung nach einem der vorhergehenden Ansprüche, wobei die Vorrichtung Mittel zum Verhindern des Ansammelns von zermahlenem, klebrigem Material im Bereich des Rotors aufweist.
  9. Vorrichtung nach Anspruch 8, wobei die Vorrichtung zumindest einen Einlaß (202) für Druckluft aufweist.
  10. Vorrichtung nach Anspruch 8 oder 9, wobei die Innenflächen der Vorrichtung zumindest in einem Teil des Bereiches unterhalb des Rotors derart ausgebildet sind, daß klebriges, zermahlenes Material sich nicht darauf ansammeln kann.
EP92902154A 1991-01-09 1992-01-09 Vertikale prallmühle mit gutnebenaufgabe Expired - Lifetime EP0565571B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95106823A EP0669166B1 (de) 1991-01-09 1992-01-09 Nassvermahlungsanlage

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB919100456A GB9100456D0 (en) 1991-01-09 1991-01-09 Method and apparatus for grinding
GB9100456 1991-01-09
PCT/GB1992/000047 WO1992011944A1 (en) 1991-01-09 1992-01-09 Method and apparatus for grinding

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP95106823.8 Division-Into 1992-01-09
EP95106823A Division EP0669166B1 (de) 1991-01-09 1992-01-09 Nassvermahlungsanlage

Publications (2)

Publication Number Publication Date
EP0565571A1 EP0565571A1 (de) 1993-10-20
EP0565571B1 true EP0565571B1 (de) 1996-07-31

Family

ID=10688199

Family Applications (2)

Application Number Title Priority Date Filing Date
EP92902154A Expired - Lifetime EP0565571B1 (de) 1991-01-09 1992-01-09 Vertikale prallmühle mit gutnebenaufgabe
EP95106823A Expired - Lifetime EP0669166B1 (de) 1991-01-09 1992-01-09 Nassvermahlungsanlage

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP95106823A Expired - Lifetime EP0669166B1 (de) 1991-01-09 1992-01-09 Nassvermahlungsanlage

Country Status (8)

Country Link
EP (2) EP0565571B1 (de)
AT (1) ATE140881T1 (de)
AU (1) AU1162092A (de)
DE (2) DE69212589T2 (de)
DK (2) DK0565571T3 (de)
GB (1) GB9100456D0 (de)
NO (1) NO305014B1 (de)
WO (1) WO1992011944A1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1268242A (en) * 1969-03-07 1972-03-22 Josef Ruzicka Process and apparatus for disintegration of frangible solids such as mica
US4238445A (en) * 1979-07-02 1980-12-09 United States Gypsum Company Process for manufacturing gypsum board
US4641787A (en) * 1983-09-26 1987-02-10 Polaroid Corporation Method of comminuting rare earth powder for producing rare earth magnet

Also Published As

Publication number Publication date
DK0669166T3 (da) 2000-01-31
ATE140881T1 (de) 1996-08-15
DE69212589T2 (de) 1997-03-06
DE69212589D1 (de) 1996-09-05
NO932514L (no) 1993-09-08
GB9100456D0 (en) 1991-02-20
EP0669166A1 (de) 1995-08-30
DE69229642T2 (de) 2000-02-17
NO932514D0 (no) 1993-07-09
DE69229642D1 (de) 1999-08-26
WO1992011944A1 (en) 1992-07-23
DK0565571T3 (da) 1996-12-09
EP0565571A1 (de) 1993-10-20
NO305014B1 (no) 1999-03-22
EP0669166B1 (de) 1999-07-21
AU1162092A (en) 1992-08-17

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