EP0648539B1 - Installation de broyage en circuit fermé - Google Patents

Installation de broyage en circuit fermé Download PDF

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Publication number
EP0648539B1
EP0648539B1 EP94114845A EP94114845A EP0648539B1 EP 0648539 B1 EP0648539 B1 EP 0648539B1 EP 94114845 A EP94114845 A EP 94114845A EP 94114845 A EP94114845 A EP 94114845A EP 0648539 B1 EP0648539 B1 EP 0648539B1
Authority
EP
European Patent Office
Prior art keywords
classifier
milling
circuit
roller press
grinding
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
EP94114845A
Other languages
German (de)
English (en)
Other versions
EP0648539A2 (fr
EP0648539A3 (fr
Inventor
Lothar Klingbeil
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.)
Deutz AG
Original Assignee
Deutz AG
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Filing date
Publication date
Application filed by Deutz AG filed Critical Deutz AG
Publication of EP0648539A2 publication Critical patent/EP0648539A2/fr
Publication of EP0648539A3 publication Critical patent/EP0648539A3/fr
Application granted granted Critical
Publication of EP0648539B1 publication Critical patent/EP0648539B1/fr
Anticipated expiration legal-status Critical
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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
    • B02C21/00—Disintegrating plant with or without drying of the material

Definitions

  • the invention relates to a circulation grinding plant (circular grinding plant) with a High pressure roller press with material bed size reduction of the feed material and with downstream deagglomerator / sifter, the size (coarse sifter) for Roller press can be recirculated.
  • Tube mills have made considerable efforts in recent years or to replace ball mills as completely as possible with other grinding processes.
  • a method for comminuting or grinding is brittle ground material known (EP-B-0 084 383, Fig. 3 and 4), in which the regrind in the nip a high-pressure roller press is pressed under high pressure, which in part for Particle destruction, sometimes leading to the creation of cracks inside the particle and manifests itself visibly in the formation of agglomerates (so-called Schülpen). Because the individual particles of the ground material are in the area of the narrowest roller gap the high pressure roller press in a material bed, d. H. in one between two surfaces compressed bulk material are crushed, one speaks of the so-called material bed shredding.
  • the one from the high-pressure roller press upcoming Gutagglomerate can be compared with disagglomerate or dissolve with little energy and then they become abandoned to a classifier, the whole of which is fed to the high pressure roller press be recirculated.
  • a classifier the whole of which is fed to the high pressure roller press be recirculated.
  • This well-known finished grinding system which can produce a finished product without that the high-pressure roller press is followed by a ball mill, however characterized by a high good circulation rate, d. H.
  • the invention has for its object an overall by a low circulating grinding plant with application and specific energy requirements to create a high pressure roller press system that is produced in terms of Product quality is very variable and z. B. is able to simultaneously to produce at least two differently fine finished products of the same good material, without high material circulation rates and the use of tube mills or other fine grinding mills are required.
  • Characteristic of the rotary grinding plant according to the invention is the series connection of at least two grinding circuits, each of which comprises a high-pressure roller press and a classifier.
  • the material cycle in the first grinding circuit is relieved in that the fines / middle goods drawn off from the classifier of the first grinding circuit are introduced into the second grinding circuit with or without the sifting air flow.
  • a partial flow can be discharged as a less fine finished product from the connecting line of the two grinding circuits, through which medium / fine material is transferred from the first grinding circuit into the two grinding circuit, e.g. B. with a fineness of 2800 cm 2 / g measured according to Blaine, while the fine finished product is withdrawn from the classifier of the second grinding circuit, for. B. with a fineness of 4500 cm 2 / g according to Blaine.
  • the rotary grinding plant according to the invention With the rotary grinding plant according to the invention, at least two differently fine finished products of the same good material, such as e.g. B. Produce cement.
  • the quality of the end product e.g. B. affect the grain distribution of the mixed product.
  • differently fine cements with certain grain distributions and certain proportions of specific surfaces are indeed required, which results in the different cement qualities or types of cement.
  • the rotary grinding plant according to the invention is able to meet these practical requirements with the lowest possible specific energy requirement.
  • the rotary grinding plant according to the invention is also able to meet the requirement after high finished goods output in t / h as well as after high degrees of fineness of the end product (subtracted from the second grinding cycle) wear, as is the case with the installation of just a single high-pressure high-pressure roller press would not be possible.
  • the two classifiers and high pressure roller presses can in their respective grinding circuits with regard to their operating conditions are each optimized, e.g. B. in terms of roller dimensions, Roll surface structures, roll peripheral speeds, more specific Pressure in the roll gap, roll gap geometry, specific roll press operation due to fine material feed, solid loading of the visible air, etc.
  • a further connecting line can be provided, through which a Partial flow of the from the first classifier to the first high-pressure roller press Classifier to the second high pressure roller press (second grinding circuit) is.
  • the first grinding cycle can be carried out by means of this classifier connection line relieved with a certain amount of semolina and with this amount of semolina the second grinding cycle can be targeted.
  • the circulation grinding plant is made up of two grinding circuits connected in series composed of which the first grinding circuit is a high pressure roller press (10) with a downstream deagglomerator / sifter (11) and the second grinding circuit also a high-pressure roller press (12) with downstream Have deagglomerator / sifter (13). Both roller presses have two rotatably mounted, counter-rotating and through a nip separate rollers. Fresh produce (14), e.g. B. not pre-shredded Cement clinker, the roller press (10) is abandoned and there one combined single grain shredding and material bed shredding.
  • Fresh produce e.g. B. not pre-shredded Cement clinker
  • the Material crushed in the narrowest nip by material bed shredding emerges from the Crushed nip and optionally partially agglomerated, d. H. to Schülpen (15) pressed out, the proportion of which has already been reduced to the desired fineness Particles of the cement to be produced can be relatively high.
  • the Schülpen (15) are preferably dynamic via transporter or line (16) Sifter (11) abandoned in the upper area with an impact crusher (17) can be equipped in which the Schülpenmaterial (15) deagglomerates before it enters the classifier's viewing area (11). It exists but also the possibility of the separator (11) having an external separate deagglomerator upstream.
  • the fines / medium extraction line (19) from the classifier (11) of the first grinding circuit leads together with the classifying air to the classifier (13) of the second grinding circuit, in which the fines (22) are separated from the middle goods (23), which the latter fed to the high-pressure roller press (12) for comminuting the bed is from which the Schülpenmaterial (24) via the transporter or line (25) to Disagglomeration stage (26) of the classifier (13) is recirculated.
  • a good part flow as a second less fine finished product (B) with a fineness of can be obtained via branch lines (32) and separators (33) e.g. B. 2800 cm 2 / g measured according to Blaine can be discharged, the exhaust air stream leaving the separator (33) can be fed back at least in part into the connecting line (19) via the suction fan and line (34).
  • the desired different cement qualities can be produced by mixing the finished products (A and B), it also being possible to influence the desired particle size distribution in the finished product.
  • the fine / medium (35) from the first grinding circuit is fed via line (39 and / or 40) introduced into the second grinding circuit, namely in the product feed line and / or in the discharge duct of the deagglomerator / classifier (26, 13).
  • the classifier (13) of the second grinding circuit also has its own Visual air recirculation line (41) equipped, the visual air recirculation is accomplished by the induced draft fan (28). Even in the embodiment 2 the finished products (A and B) obtained simultaneously can each can be mixed with each other to produce the desired finished product qualities to create. Otherwise, the same parts in the exemplary embodiments 1, 2 and 3 with the same reference numerals.
  • Fig. 3 is an additional connecting line connecting the two grinding circuits (42) through which a partial flow from the first classifier (11) to first high-pressure roller press (10) guided sifting meal (20) [coarse meal] by merging with the semolina (23) from the second sifter (13) Line (43) to the second high-pressure roller press (12) is guided.
  • the solution can also be based on the desired crop circulation rates and grain distributions in the feed for optimized running behavior of the roller press in the first Grinding cycle and also in the second grinding cycle targeted influence become.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)

Claims (3)

  1. Installation de broyage en circuit fermé comprenant une presse à cylindre à haute pression (10) avec réduction du lit de produit du produit d'entrée suivie d'un séparateur-désagglomérateur (17, 11) dont la sortie des granulés (20) débouche dans la presse à cylindres (10),
    caractérisée en ce que
    le premier circuit de broyage est suivi d'au moins un second circuit de broyage également avec une presse à cylindres à haute pression (12) et un séparateur/désagglomérateur (26, 13) de façon que la conduite d'extraction de produit fin/produit moyen (19, 35) du séparateur (11) du premier circuit de broyage débouche dans le séparateur (13) du second circuit de broyage, la conduite de sortie de granulés (23) du second séparateur (13) débouchant dans la seconde presse à cylindres à haute pression (12) et la conduite de sortie de produit fin (22, A) du second circuit de broyage sortant de l'installation de broyage.
  2. Installation de broyage en circuit fermé selon la revendication 1,
    caractérisée en ce que
    de la conduite de liaison (19, 35) des deux circuits de broyage, pour transférer le produit fin/produit moyen extrait du séparateur (11) du premier circuit de broyage, on dérive un flux partiel comme second produit terminé moins fin (B).
  3. Installation de broyage en circuit fermé selon les revendications 1 ou 2,
    caractérisée par
    une conduite de liaison (42) qui relie (en plus) les deux circuits de broyage et qui fournit des grains de séparateur (20) à la seconde presse à cylindres à haute pression (12) en provenance d'un flux partiel conduit du premier séparateur (11) vers la presse à cylindres à haute pression (10).
EP94114845A 1993-10-13 1994-09-21 Installation de broyage en circuit fermé Expired - Lifetime EP0648539B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4334904A DE4334904A1 (de) 1993-10-13 1993-10-13 Umlaufmahlanlage
DE4334904 1993-10-13

Publications (3)

Publication Number Publication Date
EP0648539A2 EP0648539A2 (fr) 1995-04-19
EP0648539A3 EP0648539A3 (fr) 1995-10-11
EP0648539B1 true EP0648539B1 (fr) 1999-07-07

Family

ID=6500062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94114845A Expired - Lifetime EP0648539B1 (fr) 1993-10-13 1994-09-21 Installation de broyage en circuit fermé

Country Status (3)

Country Link
EP (1) EP0648539B1 (fr)
DE (2) DE4334904A1 (fr)
DK (1) DK0648539T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5854835B2 (ja) 2008-07-02 2016-02-09 ビューラー・アクチエンゲゼルシャフトＢｕｅｈｌｅｒ ＡＧ 細穀粉及び／又は粗穀粉を製造する装置及び方法
DE102013019840A1 (de) * 2013-11-26 2015-05-28 Khd Humboldt Wedag Gmbh Verfahren zur Herstellung von Zement
CN105344446A (zh) * 2015-11-25 2016-02-24 天津水泥工业设计研究院有限公司 一种采用轻研磨介质的辊压机预粉磨***
CN106622600A (zh) * 2017-01-20 2017-05-10 长沙万荣粉体设备科技有限公司 一种粉磨装置
DE102017117985A1 (de) * 2017-08-08 2019-02-14 Thyssenkrupp Ag Verfahren und Anlage zur Herstellung von Zement
CN108097364A (zh) * 2018-01-31 2018-06-01 徐州至信建材机械有限公司 一种应用专用细粉分离设备的新型水泥工业辊压机循环闭路***

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719251A1 (de) * 1987-06-10 1988-12-22 Kloeckner Humboldt Deutz Ag Verfahren und anlage zur kontinuierlichen druckzerkleinerung sproeden mahlgutes
DE3744163A1 (de) * 1987-12-24 1989-07-06 Kloeckner Humboldt Deutz Ag Verfahren und anlage zur aufbereitung von erz, kohle oder anderen mineralien
DE3915432C2 (de) * 1989-05-11 1996-05-09 Kloeckner Humboldt Deutz Ag Verfahren zur Herstellung von normgerechtem Zement
DE3920005A1 (de) * 1989-06-20 1991-01-03 Kloeckner Humboldt Deutz Ag Anlage zur zerkleinerung bzw. mahlung von sproedem gut und verfahren zum betrieb einer solchen anlage

Also Published As

Publication number Publication date
EP0648539A2 (fr) 1995-04-19
DE59408467D1 (de) 1999-08-12
EP0648539A3 (fr) 1995-10-11
DE4334904A1 (de) 1995-04-20
DK0648539T3 (da) 2000-01-17

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