WO2015114135A1 - Séparateur annulaire à cascades comprenant un séparateur à panier à barres monté en aval - Google Patents

Séparateur annulaire à cascades comprenant un séparateur à panier à barres monté en aval Download PDF

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Publication number
WO2015114135A1
WO2015114135A1 PCT/EP2015/052066 EP2015052066W WO2015114135A1 WO 2015114135 A1 WO2015114135 A1 WO 2015114135A1 EP 2015052066 W EP2015052066 W EP 2015052066W WO 2015114135 A1 WO2015114135 A1 WO 2015114135A1
Authority
WO
WIPO (PCT)
Prior art keywords
annular
plant
sifter
cascades
fraction
Prior art date
Application number
PCT/EP2015/052066
Other languages
German (de)
English (en)
Inventor
Immo Behrndt
Dominik HOFFMANN
Original Assignee
Khd Humboldt Wedag Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Khd Humboldt Wedag Gmbh filed Critical Khd Humboldt Wedag Gmbh
Priority to EP15701980.3A priority Critical patent/EP3129163A1/fr
Priority to CN201580011847.2A priority patent/CN106061630B/zh
Publication of WO2015114135A1 publication Critical patent/WO2015114135A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B07B4/04—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall in cascades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents

Definitions

  • the invention relates to a system for sifting feedstock, comprising at least one cascade sifter for sifting a feedstock into a coarse material fraction of coarse material and a first middlefork fraction from first middlecrop, at least one rodcassifier arranged downstream of the at least one cascade sifter in view airflow for separating the first middleware into one Fines from fine material and a second middle fraction from second medium.
  • the type of switching of different classifiers and the type of comminution have a great influence on the grinding result.
  • the grinding result is characterized by the fineness, but above all by the particle size distribution.
  • the grain size itself and also the particle size distribution has a great influence on the achievable cement strength. This is usually explained by the fact that ner with a smaller diameter have a larger surface area in relation to the volume and also that the grains can take an ideal spherical packing at a certain particle size distribution.
  • the particle size distribution depends on a variety of parameters and a plant produces different grinding results for different ores, minerals or cement clinker. The skilled person is endeavoring to select by empirical observation, the ideal interconnection of classifiers and crushing devices with different ways of circulating material to get to a desired grain size distribution of the material to be ground.
  • a small, compact system also makes it possible to retrofit into existing systems in which, due to structural reasons, only a small amount of space is available at the desired location to set up the system.
  • European Patent EP 1 287 91 1 B1 discloses a cascade classifier whose visual floods are designed to be adjustable in order to allow the visual gas velocity for setting the visual result.
  • European Patent Specification EP 1 506 058 B1 teaches a classifying plant for use in the cement industry, in which a roller press is used for crushing is arranged vertically between the output device of a rod basket sifter and the entry opening of a cascade sifter. In this case, the straightened material of the cascade classifier below the roller press is conveyed pneumatically from below the roller press into the rod basket sifter arranged above the roller press.
  • German Offenlegungsschrift DE 10 2008 018 488 A1 discloses a sighting system in which an overhead, central rod cage sifter is supported by lateral, pneumatic ascending channels and offers a space for the accommodation of roller presses.
  • the cascade classifiers are arranged for deagglomerating pressed slugs from the roller presses below the roller presses and form with the one common rod basket sifter a system similar to that taught in the European patent specification EP 1 506 058 B1.
  • a sighting system with several roller presses and a central riser shaft is disclosed in WO2009 / 068465 A1.
  • a central rod basket sifter which is surrounded by dedusting cyclones.
  • several roller presses are arranged around the central riser shaft, with several cascade classifiers feeding their fines into the central riser shaft, which is further spotted in the overhead rod sifter.
  • the object of the invention is to provide a compact system for sifting granular material available, which allows for short transport paths different circuits of present in the plant classifiers.
  • the object underlying the invention is achieved in that the at least one cascade classifier is designed annular, wherein visual cascades are arranged helically in a hollow cylinder limited by an inner cylinder and an outer cylinder. Further advantageous embodiments are specified in the subclaims to claim 1.
  • a cascade classifier is arranged in a hollow cylinder limited by an inner cylinder and by an outer cylinder, which is bounded from the inner cylinder to the inside and from the outer cylinder to the outside.
  • the vision cascades substantially helical, like a cylindrical helix within the walls of two nested cylinders to arrange.
  • the idea of the invention is to geometrically adapt the task of the sighted feed material of the cascade sifter to an annular task of a bar cage sorter. Due to the annular task of the medium from the feed material through the annular cascade classifier onto the rod basket sifter, this also changes its known mode of operation. In known Stabkorbsichtern the average is usually at one point in tangential Added direction outer annular space, which forms a cyclonic, spiral flow around the rotating rod basket. In this case, it is important to optimize the flow of the medium, so that the entire surface of the rotating bar basket is uniformly flowed by the good to be seen.
  • the rod cage sifter Due to the annular task of the medium, the rod cage sifter is uniformly flowed over the entire circumference, except for differences in flow due to the different vertical distance of the view cascades from the rod basket. As a result, the visual performance, the throughput, the rod basket is larger, because the entire Stabkorbober Structure is flown and not only part of the circumference of the rotating rod basket.
  • the hollow cylinder is limited by an inner cylinder and an outer cylinder by the spiral staircase arranged view cascades and a partition in two helically interlocking, superimposed annular spaces is divided, wherein the feed material by a corresponding to the arranged outer wall disposed feeding device in an upper annulus, and wherein classifying air passes through a corresponding arranged on the outer wall feeder in a lower annulus, for viewing the view air flows through gaps between the spiral staircase arranged cascades and thereby easily entrains suspendable medium in the classifying air ,
  • the diameter of the annular cascade sensor and the outer task of the bar basket are approximately the same. With different diameters, it is possible to adapt the two diameters to one another by means of a cone. But it is preferred if the inner and outer diameter and thus the gap width of the hollow cylinder limited by an inner cylinder and an outer cylinder with the inner and outer diameter and thus the gap width of an annular material task for the rod basket sifter corresponds. This eliminates a cone-shaped adjustment between the annular cascade classifier and the annular task to the bar basket, whereby the pressure drop of the classifying air is reduced and the flow is ensured evenly around the circumference of the bar basket.
  • a discharge device for coarse material at the lower end of the upper annulus is arranged through which rolls not suspendable in the classifying air coarse material and passes back to a crushing device.
  • the first coarse material is discharged through the cascade classifier at the end of the cascade classifier.
  • the sighted gui of the cascade sifter is fed as the first medium fraction to the rod basket sifter.
  • This rod basket sifter screens a fine material fraction from the first medium, which is discharged from the system for sifting with the classifying air.
  • the fraction falling back from the rod cage sifter as the second middle fraction can now be eliminated from the plant for sifting or run in a circle in the plant.
  • the rod cage sifter in a first preferred configuration, provision is made for the rod cage sifter to have an inner, annular annular gap as a discharge device for the second middle fraction, the second middle fraction flowing out of the system through a discharge device and flowing outside the system to the feedstock or to a comminuting device.
  • the rod basket sifter has an inner, annular annular gap as a discharge device for the second middle fraction, the second middle fraction flowing through a discharge device into the upper annulus of the cascade sifter and flowing within the system to the feedstock.
  • the fines discharge of the bar basket can be directed upwards, so that the fines discharge with the preparekluft flows upward away.
  • a fine material discharge device is arranged above the rod basket sifter.
  • the angle of the plane of the class of cascades is adjustable.
  • the number of revolutions of the rod cage classifier is adjustable independently of the air pressure of the classifying air in order to meet the different flow requirements of the various combined classifiers in the sighting system.
  • Fig. 1 is a sketch of a broken view of an inventive
  • FIG. 2b shows the sketch from FIG. 2a with the annular spaces of the cascade classifier drawn apart vertically and the tracing air flows drawn
  • FIG. 1 shows a plant 1 according to the invention for sifting in a partially open view.
  • Annex 1 for sifting consists of a combination of two different classifiers, wherein a lower, annular cascade classifier 2 and an upper rod basket classifier 3 are interconnected via a common cylindrical jacket surface 4.
  • the cascade classifier 2 has spiral-like arranged viewing cascades 5, which are arranged in a hollow cylinder 6, wherein in the context of this description
  • the helical staircases arranged view cascades 5 divide the hollow cylinder 6 in an upper annular space 7 and in a lower annular space 8.
  • the entrained with the classifying air Mittelgutfr quasi is transported with the classifying air upwards and there is approximately uniformly distributed around the circumference on the circumference 17 of a rotating rod basket 18, wherein the classifying air through the regularly distributed along the circumference 17 turbo elements 19 of the rod basket 18 flows through and while a fines 20 entrains.
  • the second medium 21 is collected in the inner hollow cylinder 22 and fed back to the upper annular space 7.
  • upper annular space 7 and lower annular space 8 provides space for a drive of the rod basket 18, an electric motor 24 with a gear 25 is arranged there.
  • FIG. 2a and FIG. 2b the approximate volume of the two annular spaces 7, 8 is shown in the figures FIG. 2a and FIG. 2b in a sketch, the two annular spaces 7 in FIG. 8 are shown as they are interleaved in Appendix 1 for sifting.
  • the lower annulus 8 is moved downwards for clarity in FIG. 2b.
  • the lower annular space 8 has a helical structure, wherein visual floods 5 are arranged helically along the helix 27 in the hollow cylinder 6.
  • classifying air 29 flows into the upper annular space 7, which entrains a first middle goods 13 from the feed material 10.
  • the first middling material 13 is carried approximately uniformly with the classifying air 29 up to the upper edge of the upper annular space 7, where it is approximately evenly distributed around the circumference and impinges on the rotating rod basket 18, which is no longer shown in FIGS. 2a and 2b.
  • the arrangement according to the invention leads to a different flow behavior of the visible air stream which flows into the rod basket sifter 3.
  • the air is blown in tangentially, where the reformulation forms a spiral flow in the plane and flows with a half, maybe a quarter of a turn into the rotating rod basket.
  • the tangential inflow larger particles are thrown outward from the visual material entrained with the classifying air and less large particles follow the classifying air through the rotating rod basket.
  • the classifying air 29 with a tangential and with an axial direction component distributed from below to the periphery on the rod basket 18 give up.
  • the tangential component also leads to the prospect of the coarser material.
  • Hollow cylinder 22 Inner hollow cylinder Upper annular space 23 Discharge device lower annular space 24 Electric motor

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

L'invention concerne une installation (1) de séparation d'un produit chargé (10). Ladite installation comporte au moins un séparateur à cascades (2) servant à séparer un produit chargé (10) en une fraction grossière composée d'un produit grossier (14) et en une première fraction moyenne composée d'un premier produit moyen (13), au moins un séparateur à panier à barres (3) monté en aval du ou des séparateurs à cascades (2) dans l'écoulement d'air de séparation, destiné à séparer le premier produit moyen (13) en une fraction fine composée d'un produit fin (20) et en une deuxième fraction moyenne composée d'un deuxième produit moyen (21). Le ou les séparateurs à cascades (2) sont annulaires, des cascades de séparation (5) étant disposées à la façon d'un escalier en colimaçon dans un cylindre creux (6) en étant délimitées par un cylindre intérieur et par un cylindre extérieur. La puissance du séparateur est ainsi accrue, tandis que l'encombrement est simultanément réduit.
PCT/EP2015/052066 2014-02-01 2015-02-02 Séparateur annulaire à cascades comprenant un séparateur à panier à barres monté en aval WO2015114135A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15701980.3A EP3129163A1 (fr) 2014-02-01 2015-02-02 Séparateur annulaire à cascades comprenant un séparateur à panier à barres monté en aval
CN201580011847.2A CN106061630B (zh) 2014-02-01 2015-02-02 环形的阶梯式筛分器与连接在下游的吊篮式筛分器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014001384.7A DE102014001384B4 (de) 2014-02-01 2014-02-01 Ringförmiger Kaskadensichter mit nachgeschaltetem Stabkorbsichter
DE102014001384.7 2014-02-01

Publications (1)

Publication Number Publication Date
WO2015114135A1 true WO2015114135A1 (fr) 2015-08-06

Family

ID=52440678

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/052066 WO2015114135A1 (fr) 2014-02-01 2015-02-02 Séparateur annulaire à cascades comprenant un séparateur à panier à barres monté en aval

Country Status (4)

Country Link
EP (1) EP3129163A1 (fr)
CN (1) CN106061630B (fr)
DE (1) DE102014001384B4 (fr)
WO (1) WO2015114135A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220331839A1 (en) * 2021-04-20 2022-10-20 Wlodzimierz Sosnowski Device for separation and removal impurities from granular material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112517401B (zh) * 2020-11-12 2022-06-28 昆明理工大学 一种地质勘探用碎石装置的过滤机构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5079868A (fr) * 1973-11-19 1975-06-28
DE102011055762A1 (de) * 2011-11-28 2013-05-29 Maschinenfabrik Köppern GmbH & Co KG Vorrichtung zum Sichten von körnigem Gut

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Publication number Priority date Publication date Assignee Title
DD208561B1 (de) * 1982-06-22 1986-12-10 Dessau Zementanlagenbau Veb Dispergiervorrichtung fuer einen statischen sichter
DE3622413C2 (de) * 1986-07-03 1995-08-03 Krupp Polysius Ag Sichter
DE10142162A1 (de) 2001-08-29 2003-03-20 Kloeckner Humboldt Wedag Sichter zum Sichten von körnigem Gut
DE10221739A1 (de) 2002-05-16 2003-12-04 Kloeckner Humboldt Wedag Kreislaufmahlanlage mit Mühle und Sichter
CN2749588Y (zh) * 2004-11-08 2006-01-04 王志强 涡流旋风式选粉机
DE102005053617A1 (de) * 2005-11-10 2007-06-14 Khd Humboldt Wedag Gmbh Sichtereinrichtung zum Sichten von körnigem Gut
DE102006039775A1 (de) 2006-08-24 2008-02-28 Khd Humboldt Wedag Gmbh Sichteinrichtung zum Sichten körnigen Gutes und Kreislaufmahlanlage mit Einschaltung einer solchen Sichteinrichtung
DE102008018488B4 (de) 2008-04-11 2019-01-10 Khd Humboldt Wedag Gmbh Umwälzmahlanlage mit außen liegenden Steigrohren
FR2941389B1 (fr) * 2009-01-29 2011-10-14 Fives Fcb Dispositif de separation granulometrique selective de matieres pulverulentes solides, a action centrifuge, et procede d'utilisation d'un tel dispositif

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5079868A (fr) * 1973-11-19 1975-06-28
DE102011055762A1 (de) * 2011-11-28 2013-05-29 Maschinenfabrik Köppern GmbH & Co KG Vorrichtung zum Sichten von körnigem Gut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220331839A1 (en) * 2021-04-20 2022-10-20 Wlodzimierz Sosnowski Device for separation and removal impurities from granular material

Also Published As

Publication number Publication date
DE102014001384B4 (de) 2018-03-29
CN106061630B (zh) 2019-03-29
EP3129163A1 (fr) 2017-02-15
CN106061630A (zh) 2016-10-26
DE102014001384A1 (de) 2015-08-06

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