EP2125229B1 - Séparateur à air pour matériaux broyés - Google Patents

Séparateur à air pour matériaux broyés Download PDF

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Publication number
EP2125229B1
EP2125229B1 EP08705553.9A EP08705553A EP2125229B1 EP 2125229 B1 EP2125229 B1 EP 2125229B1 EP 08705553 A EP08705553 A EP 08705553A EP 2125229 B1 EP2125229 B1 EP 2125229B1
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EP
European Patent Office
Prior art keywords
concentric
vessel
rotor
outlet
sidewall
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
EP08705553.9A
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German (de)
English (en)
Other versions
EP2125229A1 (fr
EP2125229A4 (fr
EP2125229B2 (fr
Inventor
Eberhard W Neumann
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.)
Maschinenfabrik Koeppern GmbH and Co KG
Original Assignee
Maschinenfabrik Koeppern GmbH and Co KG
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.)
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Application filed by Maschinenfabrik Koeppern GmbH and Co KG filed Critical Maschinenfabrik Koeppern GmbH and Co KG
Publication of EP2125229A1 publication Critical patent/EP2125229A1/fr
Publication of EP2125229A4 publication Critical patent/EP2125229A4/fr
Publication of EP2125229B1 publication Critical patent/EP2125229B1/fr
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Publication of EP2125229B2 publication Critical patent/EP2125229B2/fr
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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
    • 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
    • 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
    • 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
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • 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
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/086—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by the winding course of the gas stream
    • 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 present invention relates to air separators according to the preamble of claim 1, in particular for use in conjunction with comminution equipment, such as high pressure roll presses and ball mills and to a method of segregating comminuted material for further processing.
  • High pressure roll presses have been used in cement processing with ball mills to increase throughput capacity and decrease the total energy expenditure in cement processing. These roll presses typically are the first stage in clinker grinding processing, and processing of other materials, with product from the press being directed to a ball mill or other machinery for further processing.
  • an air separator has been used in conjunction with other grinding and comminution devices to improve separating and grinding efficiency.
  • Comminuted material is introduced into a cyclonic vessel. Larger material falls to the bottom of the vessel and is removed via an exit port for further processing. Material fines suitable for use as a final product are removed from the comminuted material within the cyclonic vessel by vortical wind currents created by a fan. A slight vacuum is then typically employed to remove the fines from the cyclonic vessel from a second exit port typically at the top of the vessel or along the sides thereof, so as not to commingle the fines with the larger material exiting from the bottom exit port.
  • An air separator according to the preamble of claim 1 is known from EP 0 492 062 A1 .
  • This air separator has three concentric vessels, each being partially conical and each having an outlet.
  • One of these vessels has a material inlet arranged on the top of a housing and at least one air inlet being tangentially aligned.
  • a rotary shaft is extending through an upper surface concentric with an inner surface and being connected to a rotor concentric with said inner surface.
  • US 1,735,479 A shows a similar air separator having three concentric vessels each having an outlet.
  • a rotor being attached to a rotory shaft and a material inlet arranged at the top of a housing.
  • US 3,490,702 A discloses a method of accelerating production of Portland cement and similar material having an air separator, a ball mill and a crusher.
  • U.S. Patent No. 6,889, 843 discloses an air separator for particulate material. Particles of various sizes are introduced to a separating zone through which a gas stream flows at such volume and velocity as to entrain fine particles and convey them from the separating zone to grinding or other facilities. The fineness of entrained particles may be adjusted by diverting a selected portion of the gas stream from the separating zone to a bypass passageway followed by recombining the diverted portion of such gas stream with the gas containing the entrained particles.
  • Kimmeyer et al. U.S. Patent No. 6,644,479 discloses an air separator for comminuted material having a sifting rotor. Air and comminuted material are introduced into a sifting chamber and blocking air is blown into a ring seal region in the transition region between the sifting rotor and a stationary withdrawal duct. Particle size distribution range in the fine material/end product is controlled by discharging fine material through a bypass stream. By controlling the supply of blocking air, the volume of the bypass stream can be changed, thereby regulating the size of the separated material.
  • U.S. Patent No. 6,631,808 discloses an air classifier with enhanced air flow which maybe used for the simultaneous recovery of two or more distinct grades of foundry quality sand from a single sand stream.
  • the air classifier draws incoming air into the classification chamber through a honeycomb followed by a screen section having two or more screens, a vibrating screen feeder for spreading the incoming particle stream before entrainment in the air flow within the classifier can also be included.
  • Fischer-Helwig et al. U. S. Patent No. 5,158,182 discloses a rotary separator for separating different fractions of particulate material. Material and air pass inwardly through a cylindrical outer housing and three rotary cages. Channels below the rotors collect the separate fractions of separated material.
  • Blasczyk et al. U.S. Patent No. 4,792,393 discloses an air separator in which the spiral for delivery of the air for sifting is divided into a plurality of channels.
  • the channels lie one above another and the quantity of air delivered to the individual channels can be adjusted.
  • the degree of separation can be optimized by adjustably controlling air flow to each of the plurality of chambers.
  • the present invention provides various embodiments of a cyclonic air separator for the use in conjunction with the compressive comminution of granular material, including cement clinker.
  • the invention provides an air separator having a plurality of concentric vessels.
  • a spiral inlet housing, thimble, guide vanes, and rotor are provided atop the vessels to provide vortical wind currents within the vessels, and segregates feed material into the various vessels based on particle size.
  • the invention further provides that separated feed material is withdrawn from one of a plurality of vessel exit ports, or discharge outlets, for use as a final product.
  • the invention further provides that comminuted material can be introduced into the air separator at a plurality of entrance ports, based on the size of the particles, and the comminution processes already undergone.
  • air separator 10 includes a rotor 12 centrally positioned inside a corresponding rotor housing 14 about a vertical axis.
  • a rotary shaft 16 extends through the rotor housing 14 and is attached to the rotor 12 along a common concentric vertical axis.
  • the rotor 12 is supported within the rotor housing 14, so that it rotates freely within the housing 14 around the vertical, shaft-defined axis.
  • the rotor 12 itself is a drum or fan designed to let air and small particles pass vortically inward to the interior of the drum.
  • the rotor 12 is typically comprised of vertically extending rotor vanes 18 supported by at least an annular upper vane support 20, and preferably also by a lower annular vane support 22.
  • the rotor vanes 18 are mounted between the upper supports 20 and lower supports 22 and are fixed into position.
  • the rotor vanes 18 direct air and comminuted material into the interior of the rotor drum 12.
  • the rotational velocity of the rotor 12 can be altered to control the size of the particles that are allowed to pass into the rotor 12.
  • the rotor housing 14 defines a substantially hollow cylindrical cavity wherein pre-separated material can be acted on by vortical forces created by the rotor and the rotor vanes 18.
  • a secondary material feed 24 is located above the rotor 12, preferably concentric with the rotary shaft 16, and extending through the surface of the rotor housing 14.
  • Material from the secondary material feed 24 is fed directly to the rotor 12, preferably from a ball mill or other type mill capable of fine-grinding the comminuted material.
  • Material from the secondary material feed 24 is of a sufficiently small size and dimension that it will not harm the rotor 12 or the rotor vanes 18 when fed into the rotor housing 14. It is preferable that material entering the secondary material feed 24 is of a size and dimension that would normally be carried by the vortical forces in the rotor housing 14. That is, material from the secondary feed 24 is preferably small enough to be carried by the wind currents inside the rotor housing 14.
  • the product duct 26 Situated directly beneath the rotor 12 is the product duct 26. Comminuted material that is fine enough to be drawn into the rotor 12 is conducted into the product duct 26, and out of the air separator 10 through a product exit port 28. The product exit port 28 can then be connected to other machinery for settling the comminuted product from the conveying air.
  • the product duct 26 is comprised of two regions, the upper cylindrical portion 30 located proximate to the rotor 12, and the lower frusto-conical portion 32, located distal from the rotor 12. This profile allows for the maintenance of sufficient velocities within the product duct 26.
  • the product exit port 28 is provided with a slight vacuum, such that air within the air separator 10 is drawn out through the product exit port 28. This ensures the prompt removal of finely comminuted material from the air separator 10.
  • the fine rejects vessel 36 is positioned generally concentrically around the product vessel or duct 26, with the product discharge outlet or exit port 28 extending therethrough. Similar to the product vessel 26, the fine rejects vessel 36 is comprised of an upper cylindrical portion 38, and a lower frusto-conical portion 40. The upper edge of the upper portion 38 is generally coplanar with the intersection of the product vessel 26 and the rotor 12. The plurality of guide vanes 34 are connected to and extend from the top of the upper portion 38 and are also connected to the rotor housing 14.
  • Material collected into the fine rejects vessel 36 is directed out of the air separator 10 through discharge outlet or exit 42. Material from the exit 42 can then be redirected to a ball mill grinder for further processing, and eventual reintroduction to the air separator 10 through the secondary material feed 24.
  • a final coarse rejects vessel 44 is concentrically located around the fine rejects vessel 36, with both the product exit 28 and the fine rejects exit port 42 extending there through.
  • the coarse rejects vessel 44 is comprised of an upper cylindrical portion 46, and a lower frusto-conical portion 48, similar to the fine rejects vessel 36.
  • the annularly defined space 52 between the upper portion 38 of the fine rejects vessel 36 and the upper portion 46 of final coarse rejects vessel 44 allow for air flow from that annular space 52 upward through the plurality of guide vanes 34, and into the rotor 12.
  • a primary material feed 56 Integrally and tangentially attached to the coarse rejects vessel is a primary material feed 56.
  • the primary material feed 56 functions both as an air inlet and for introduction of coarsely comminuted feed material.
  • Feed material entering the air separator 10 at the primary material feed 56 is typically material that has been passed through a first stage comminution device, such as a high pressure roll press.
  • the feed 56 is a spiral inlet, preferably having a 180° twist. Air entering the separator 10 at the primary material feed 56 creates a flow that can carry fine particles upward into the rotor housing 14 and rotor 12 for segregation between the product vessel 26 and fine rejects vessel 36. Material from the primary material feed 56 that is too heavy for transport into the rotor housing 14 is separated out of the air separator 10 into the coarse rejects vessel 44, and is discharged at the coarse rejects discharge outlet or exit 50, for further comminution.
  • the air separator is provided with a plurality of concentric, partially conical vessels.
  • a rotor is provided atop the vessels to provide vortical wind currents within the vessels, and segregates feed material into the various vessels based on particle size. Separated feed material is withdrawn from one of a plurality of vessel exit ports for use as a final product. Withdrawn comminuted material can be reintroduced into the air separator at one of a plurality of entrance ports, based on either or both of the size of the particles, and the comminution processes already undergone.

Claims (3)

  1. Séparateur à air pour la séparation sélective de particules de différentes tailles comprenant :
    une série de récipients concentriques (26, 36, 44), le séparateur ayant au moins une entrée de matière (56) et trois sorties de décharge de matière (28, 42, 40), chaque sortie étant associée avec l'un desdits récipients ;
    chacun desdits récipients étant partiellement conique ;
    un logement supérieur (14) ayant une surface supérieure et une surface intérieure substantiellement cylindrique ;
    un arbre rotatif (16) s'étendant à travers ladite surface supérieure, concentrique avec ladite surface intérieure ;
    un rotor (12) concentrique avec ladite surface intérieure, ledit rotor (12) étant fixé audit arbre rotatif (16) ;
    un premier récipient concentrique (44), ledit premier récipient comprenant une première portion supérieure ayant une entrée d'air (52) alignée tangentiellement, et une première portion inférieure tronconique (48) ayant au moins une première paroi latérale et une première sortie de matière ;
    un second récipient concentrique (36), disposé à l'intérieur dudit premier récipient concentrique (44), ledit second récipient concentrique comprenant une seconde portion supérieure (38) et une seconde portion inférieure tronconique (40) ayant au moins une seconde paroi latérale et une seconde sortie de matière (42) s'étendant à travers ladite première paroi latérale;
    un troisième récipient concentrique (26), disposé à l'intérieur dudit premier récipient concentrique (44), ledit troisième récipient concentrique (26) comprenant une troisième sortie de matière (28) s'étendant à travers ladite première paroi latérale et ladite seconde paroi latérale;
    caractérisé en ce que le séparateur d'air comprend en outre :
    une seconde alimentation en matière (24) s'étendant à travers ladite surface supérieure pour distribuer des matières non triées à l'intérieur dudit logement supérieur (14) ;
    ledit troisième récipient concentrique (26) étant disposé positionné substantiellement en dessous dudit rotor (12) ;
    ladite première alimentation en matière (56) étant connectée à ladite entrée d'air tangentielle (52) ; et
    dans lequel ladite seconde portion supérieure (38) constitue une barrière entre ladite première portion supérieure (46) et l'intérieur dudit second récipient concentrique (38), et dans lequel un flux d'air est dirigé à partir de ladite entrée d'air (56) sur ladite barrière, traverse ledit rotor (12), et sort par ladite troisième sortie de matière (28).
  2. Séparateur à air selon la revendication 1, comprenant en outre:
    une presse à rouleau ;
    un broyeur, dans lequel la seconde alimentation en matière (24) est disposée pour recevoir de la matière provenant dudit broyeur ;
    dans lequel la première sortie de matière (50) est disposée pour distribuer de la matière séparée à ladite presse à rouleau;
    dans lequel la seconde sortie de matière (42) est disposée pour distribuer de la matière séparée audit broyeur ;
    dans lequel la troisième sortie de matière (28) est disposée pour distribuer un produit fini et dans lequel la première alimentation en matière (24) est disposée pour recevoir de la matière provenant de ladite presse à rouleau.
  3. Procédé pour trier de la matière broyée destinée à être traitée ultérieurement comprenant ;
    fournir un séparateur à air comprenant :
    un séparateur à air pour la séparation sélective de particules de différentes tailles comprenant :
    une série de récipients concentriques (26, 36, 44), le séparateur ayant au moins une entrée de matière (56) et trois sorties de décharge de matière (28, 42, 40), chaque sortie étant associée avec l'un desdits récipients ;
    chacun desdits récipients étant partiellement conique ; un logement supérieur (14) ayant une surface supérieure et une surface intérieure substantiellement cylindrique ;
    un arbre rotatif (16) s'étendant à travers ladite surface supérieure, concentrique avec ladite surface intérieure ;
    un rotor (12) concentrique avec ladite surface intérieure, ledit rotor (12) étant fixé audit arbre rotatif (16) ;
    une seconde alimentation en matière (24) s'étendant à travers ladite surface supérieure pour distribuer des matières non triées à l'intérieur dudit logement supérieur (14) ;
    un premier récipient concentrique (44), ledit premier récipient comprenant une première portion supérieure ayant une entrée d'air (52) alignée tangentiellement, et une première portion inférieure tronconique (48) ayant au moins une première paroi latérale et une première sortie de matière ;
    un second récipient concentrique (36), disposé à l'intérieur dudit premier récipient concentrique (44), ledit second récipient concentrique comprenant une seconde portion supérieure (38) et une seconde portion inférieure tronconique (40) ayant au moins une seconde paroi latérale et une seconde sortie de matière (42) s'étendant à travers ladite première paroi latérale;
    un troisième récipient concentrique (26), disposé à l'intérieur dudit premier récipient concentrique (44), et positionné substantiellement au-dessous dudit rotor (12), ledit troisième récipient concentrique (26) comprenant une troisième sortie de matière (28) s'étendant à travers ladite première paroi latérale et ladite seconde paroi latérale;
    ladite première alimentation en matière (56) étant connectée à ladite entrée d'air tangentielle (52) ; et dans lequel ladite seconde portion supérieure (38) constitue une barrière entre ladite première portion supérieure (46) et l'intérieur dudit second récipient concentrique (38), et dans lequel un flux d'air est dirigé à partir de ladite entrée d'air (56) sur ladite barrière, traverse ledit rotor (12), et sort par ladite troisième sortie de matière (28) ;
    et fournir: une presse à rouleau ;
    un broyeur, dans lequel la seconde alimentation en matière (24) est disposée pour recevoir de la matière provenant dudit broyeur ;
    dans lequel la première sortie de matière (50) est disposée pour distribuer de la matière séparée à ladite presse à rouleau ;
    dans lequel la seconde sortie de matière (42) est disposée pour distribuer de la matière séparée audit broyeur ;
    dans lequel la troisième sortie de matière (28) est disposée pour distribuer un produit fini et dans lequel la première alimentation en matière (24) est disposée pour recevoir de la matière provenant de ladite presse à rouleau ;
    et recevoir une première matière de la presse à rouleau et l'introduire dans la première alimentation en matière (56) ;
    recevoir une seconde matière provenant d'un broyeur et l'introduire dans ladite seconde alimentation en matière (24) ;
    trier ladite première matière et ladite seconde matière pour distribution soit à partir de ladite première sortie de matière (50), soit à partir de ladite troisième sortie de matière (28) et diriger un flux d'air depuis une entrée d'air sur ladite barrière à travers ledit rotor (12) et en sortant de ladite troisième sortie de matière (28).
EP08705553.9A 2007-01-10 2008-01-10 Séparateur à air pour matériaux broyés Not-in-force EP2125229B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US87961807P 2007-01-10 2007-01-10
PCT/US2008/000356 WO2008086026A1 (fr) 2007-01-10 2008-01-10 Séparateur à air pour matériaux broyés

Publications (4)

Publication Number Publication Date
EP2125229A1 EP2125229A1 (fr) 2009-12-02
EP2125229A4 EP2125229A4 (fr) 2013-03-27
EP2125229B1 true EP2125229B1 (fr) 2014-02-26
EP2125229B2 EP2125229B2 (fr) 2021-01-13

Family

ID=39609015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08705553.9A Not-in-force EP2125229B2 (fr) 2007-01-10 2008-01-10 Séparateur à air pour matériaux broyés

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Country Link
EP (1) EP2125229B2 (fr)
DK (1) DK2125229T4 (fr)
WO (1) WO2008086026A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016203420A1 (de) 2016-03-02 2017-09-07 Thyssenkrupp Ag Sichter zum Sichten eines Materialstroms

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017203812A1 (de) * 2017-03-08 2018-09-13 Thyssenkrupp Ag Sichteinrichtung und Verfahren zum Sichten eines Materialstroms

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1735479A (en) * 1928-02-04 1929-11-12 Sturtevant Mill Co Air separator
DE908096C (de) * 1951-04-25 1954-04-01 Babcock & Wilcox Dampfkessel W Windsichter
US3490702A (en) * 1966-10-24 1970-01-20 D Ore Mills Inc Method of accelerating production of portland cement and similar material
DE4005323A1 (de) † 1990-02-20 1991-08-22 Krupp Polysius Ag Verfahren und mahlanlage zur zweistufigen zerkleinerung von sproedem mahlgut
DE4112018A1 (de) * 1990-06-08 1991-12-12 Kloeckner Humboldt Deutz Ag Sichter
DK167054B1 (da) * 1990-11-26 1993-08-23 Smidth & Co As F L Dobbeltseparator til udskillelse af partikelformet materiale
DE4040890C2 (de) * 1990-12-20 1995-03-23 Krupp Foerdertechnik Gmbh Windsichter
DE4224704C2 (de) † 1992-07-25 2002-01-31 Kloeckner Humboldt Wedag Verfahren und Anlage zur Zerkleinerung von Mahlgut
DE102004027128A1 (de) † 2004-06-03 2005-12-22 Polysius Ag Vorrichtung zum Sichten von körnigem Gut in wenigstens drei Kornfraktionen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016203420A1 (de) 2016-03-02 2017-09-07 Thyssenkrupp Ag Sichter zum Sichten eines Materialstroms
WO2017148882A1 (fr) 2016-03-02 2017-09-08 Thyssenkrupp Industrial Solutions Ag Séparateur pour séparer un flux de matériaux

Also Published As

Publication number Publication date
EP2125229A1 (fr) 2009-12-02
WO2008086026A1 (fr) 2008-07-17
EP2125229A4 (fr) 2013-03-27
EP2125229B2 (fr) 2021-01-13
DK2125229T3 (da) 2014-05-19
DK2125229T4 (da) 2021-02-22

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