EP0399192B1 - Presse à cylindres, notamment pour le broyage par pression de matériau granulé - Google Patents

Presse à cylindres, notamment pour le broyage par pression de matériau granulé Download PDF

Info

Publication number
EP0399192B1
EP0399192B1 EP19900106731 EP90106731A EP0399192B1 EP 0399192 B1 EP0399192 B1 EP 0399192B1 EP 19900106731 EP19900106731 EP 19900106731 EP 90106731 A EP90106731 A EP 90106731A EP 0399192 B1 EP0399192 B1 EP 0399192B1
Authority
EP
European Patent Office
Prior art keywords
press
roll
roller
rolls
precompacting
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.)
Revoked
Application number
EP19900106731
Other languages
German (de)
English (en)
Other versions
EP0399192A1 (fr
Inventor
Eberhard Steinbiss
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6381159&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0399192(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0399192A1 publication Critical patent/EP0399192A1/fr
Application granted granted Critical
Publication of EP0399192B1 publication Critical patent/EP0399192B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more 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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/286—Feeding devices

Definitions

  • the invention relates to a roller press with two oppositely rotatable, horizontally opposite rollers of the same diameter separated from one another by a press nip for pressure reduction of granular material with a feed hopper arranged above the nip.
  • a method for comminuting or grinding brittle ground material is known (EP-PS 0 084 383), in which the ground material, for. B. not pre-shredded cement clinker, is pressed in the nip of a high-pressure roller press under high pressure, which in part leads to particle destruction, in part to produce cracks inside the particles leads and manifests itself visibly in the formation of agglomerates (so-called Schülpen), which can be disagglomerated or dissolved with comparatively little expenditure of energy and which already contain fine material as a result of the application of the high pressing pressure with destruction of the grain structure, so that the known process as a whole is characterized by a low specific energy requirement.
  • the feed material fed to the nip When operating the high-pressure roller press for compacting or for pressure treatment of granular material, the feed material fed to the nip must be gripped by the rollers driven in opposite directions and drawn into the nip by friction.
  • the individual particles of the ground material drawn in by friction in the area of the narrowest roll gap are crushed in a bed of material, ie in a bed of material compressed between the two roll surfaces when the extremely high pressure is applied, so that one speaks of the so-called bed size reduction.
  • the good draw-in capacity of the rollers would itself be improved if the feed material was fed in in such an amount that a high load of feed material was formed over the nip in the feed shaft.
  • the feed to the high-pressure roller press is at least partly very fine-grained by adding z to the fresh feed.
  • large amounts of the semolina of the roller press, if necessary, can be recirculated via a classifier connected downstream of the classifier, the good intake capacity of the rollers can deteriorate and the throughput of the roller press can be reduced.
  • the problem can also arise that the air pressed by the high-pressure pressure from the feed material bed can no longer escape , which impairs the material pressure and the energy savings that can be achieved with the material bed comminution and leads to uneven operation of the roller press.
  • the problem of material intake and venting in the nip of the roller press is further exacerbated by the fact that the bulk density of the recirculated semolina is generally considerably lower than the bulk density of the fresh feed material or that the porosity of the classifier is greater than that of the fresh feed material.
  • DE-OS 38 23 929 suggests first pressing the fresh feed material alone and then pressing the press passage together with the recirculated semolina. Since this method would mean connecting two roller presses in series, it is further proposed to carry out the pressing in only one roller press which contains a plurality of roller pairs. In terms of construction, this roller press is designed so that a larger drive roller is part of all existing roller pairs and the idler rollers are arranged next to one another next to the drive roller.
  • a disadvantage of this method in addition to the complex construction of the roller press used, is that the material fed to the individual roller pairs, in particular the pure fresh material, still contains large amounts of trapped air, so that the disadvantages described, which result from the air being pressed out, persist.
  • the invention has for its object to provide a roller press in which the above-described energy-consuming, throughput-reducing and disruptive material pressing difficulties in the roller gap, mainly caused by air enclosed in the material bed, are significantly reduced.
  • the porosity of the granular material loosely poured into the feed chute has a decisive influence on the material intake capacity of the rollers, on the mass throughput and on the operating behavior of the roller presser (quiet or vibrating operation).
  • the air volume or the porosity of the feed material should be as small as possible and constant in space and time. According to the invention, this is achieved by the arrangement of at least one additional roller (pre-compression roller), which is pressed above at least one of the two press rollers against it with a pressing force that is lower than the pressing force with which the two press rollers press against each other onto the material drawn into their nip be pressed.
  • the pre-compacting roller will be pressed above at least one of the two press rollers against it with a pressing force that is lower than the pressing force with which the two press rollers press against each other onto the material drawn into their nip be pressed.
  • the good pull-in capacity of the two press rollers themselves is decisively improved;
  • the maximum pressure applied in the press roll nip, with which the material is pressed during material bed size reduction, is achieved faster and more reliably; as a result of the pre-compacted good material being drawn into the press nip, the roller press runs more smoothly with fewer vibrations; higher peripheral speeds of the two press rolls are possible; overall higher throughputs of the roller press can be achieved; the crushing success is increased; ultimately the specific energy requirement of the roller press according to the invention is reduced.
  • the roller press has two rotatably mounted, counter-rotating rollers (10, 11) which are separated from one another by a press roll nip.
  • the roller press is to be comminuted or ground feed material (12), namely z. B. not pre-crushed cement clinker with a grain size up to, for example, 100 mm, together with fine material, consisting, for. B. from recirculated semolina of a downstream classifier, abandoned via a feed chute (13).
  • the grain size of an essential part of the feed material (12) can be larger than the width of the narrowest nip of z. B.
  • the pressing force (10a, 10b) of the rolls of the roll press which presses on the material is more than 2 MN / m roll length, for example 6 to 9 MN / m.
  • the feed material (12) is comminuted in the gap between the rollers (10, 11) by a combined single grain comminution and material bed comminution.
  • the feed material is in such a way a large amount fed to the nip of the press, that the material to be shredded and drawn into the nip by friction pushes the rollers (10, 11) apart and the particles of the feed material crush each other in the nip in a bed or in a bed of material.
  • the material emerges from the roll nip, crushed and partially agglomerated, that is to say pressed into flakes (14), the proportion of particles reduced to the desired final fineness (eg about 25% less than 90 (um) can already be relatively high.
  • the flakes (14) are then deagglomerated and sifted in a sifter (not shown), the coarse grain fraction (grit) of which is recirculated to the feed chute (13) of the roller press.
  • the air volume or the porosity of the granular material (12) loosely poured into the feed hopper (13) is, for. B. 60 to 70%.
  • an additional roller or, respectively, above the press roller (11) at the lower end of the material feed shaft (13) Pre-compacting roller (15), the diameter of which is smaller than the diameter the press rolls (10, 11).
  • the pre-compacting roller (15) is pressed against the press roller (11) with a pressing force (15a) which is lower than the pressing force (10a) or (10b) with which it is in the nip of the press rollers (10, 11) by friction fed is pressed.
  • the by the pre-compacting roller (15) pre-compacted material (16) has a porosity of z. B. only 30 to 40%, while the porosity in the Schülpe (14) generated by high pressure then on z. B. is reduced about 22%.
  • the feed hopper (13) and the pre-compacting roller (15) can also be arranged (for example in mirror image) above the press roller (10).
  • the speed, contact pressure and draw-in behavior (coefficient of friction) of the pre-compression roller (s) can be optimally adapted to the corresponding feed material.
  • the fine material (18) with high porosity is pre-compressed and the porosity of the pre-compressed material (16) can be approximated to the porosity of the coarse material (17), so that in the roller gap between the Press rollers (10, 11) are drawn in by friction to feed a material with always uniform and reduced porosity, which favors the operation of the roller press according to the invention that is as shock-free or vibration-free as possible.
  • a wear protection plate (20) can advantageously be arranged diagonally above the pre-compression roller (15) as its wear protection.
  • two pre-compression rollers (15) and (21) are arranged next to one another and freely rotating in opposite directions, of which the pre-compression roller (15) against the press roller (11) and the pre-compacting roller (21) is pressed against the press roller (10).
  • the pre-compression roller (15) compresses the fine material (18) and the pre-compression roller (21) compresses the coarse material (17).
  • Both pre-compression rollers (15) and (21) are protected against wear by wear protection plates (22, 23) arranged in the feed hopper (13).

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Glanulating (AREA)
  • Crushing And Grinding (AREA)

Claims (7)

  1. Presse à cylindres avec deux cylindres de presse (10, 11) de même diamètre séparés par un jeu de cylindres, se faisant face horizontalement, pouvant tourner en sens inverse, logés en rotation, pour broyer sous l'effet de la pression du matériau granuleux, avec une trémie de produit initial (13) placée au-dessus du jeu des cylindres, caractérisée en ce qu'on implante au moins un cylindre de prédensification (15, 21) pour prédensifier le produit initial avant son introduction dans le jeu des cylindres de la presse, au-dessus d'au moins l'un des deux cylindres de presse (10, 11) dans ou à l'extrémité inférieure de la trémie (13) de produit initial.
  2. Presse à cylindres selon la revendication 1, caractérisée en ce qu'au moins un cylindre de prédensification (15 ou 21) présente un diamètre plus petit que celui des cylindres de presse (10, 11).
  3. Presse à cylindres selon la revendication 1 ou 2, caractérisée en ce que le(s) cylindre(s) de prédensification (15 ou 21) est(sont) appliqué(s) contre le cylindre de presse associé avec une force de compression qui est inférieure à la force de pression avec laquelle le produit entraîné dans le jeu des cylindres est comprimé par les deux cylindres de presse.
  4. Presse à cylindres selon la revendication 1, 2 ou 3, caractérisée en ce que le(s) cylindre(s) de prédensification (15 ou 21) est(sont) relié(s) à un entraînement individuel de mise en rotation.
  5. Presse à cylindres selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'à chaque cylindre de presse (10, 11) correspond à son propre cylindre de prédensification et que les deux cylindres de prédensification (15, 21) proches l'un de l'autre sont implantés au-dessus du jeu des cylindres et tournent en sens inverse.
  6. Presse à cylindres selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'on implante au-dessus du(des) cylindre(s) de prédensification une protection anti-usure (20 ou 22, 23).
  7. Presse à cylindres selon l'une quelconque des revendications précédentes, caractérisée en ce que dans la trémie de produit initial (13) le produit grossier (17) et le produit fin (18) sont séparés par une paroi intermédiaire (19) et que notamment le produit fin est prédensifié par le(s) cylindre(s) de prédensification.
EP19900106731 1989-05-22 1990-04-07 Presse à cylindres, notamment pour le broyage par pression de matériau granulé Revoked EP0399192B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3916641 1989-05-22
DE19893916641 DE3916641A1 (de) 1989-05-22 1989-05-22 Walzenpresse insbesondere zur druckzerkleinerung koernigen gutes

Publications (2)

Publication Number Publication Date
EP0399192A1 EP0399192A1 (fr) 1990-11-28
EP0399192B1 true EP0399192B1 (fr) 1993-10-27

Family

ID=6381159

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900106731 Revoked EP0399192B1 (fr) 1989-05-22 1990-04-07 Presse à cylindres, notamment pour le broyage par pression de matériau granulé

Country Status (3)

Country Link
EP (1) EP0399192B1 (fr)
DE (2) DE3916641A1 (fr)
DK (1) DK0399192T3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048763A (en) * 1990-02-21 1991-09-17 Fuller Company Multi-pass roll crusher
DE19632976A1 (de) * 1996-08-16 1998-02-19 Deutz Ag Zweiwalzenmaschine und Verfahren zur Druckbehandlung körnigen Gutes
DE19738228A1 (de) * 1997-09-02 1999-03-04 Kloeckner Humboldt Wedag Verfahren zur Kreislaufmahlung spröden Mahlgutes und Mahlanlage hierzu
EP1717215A1 (fr) * 2005-04-19 2006-11-02 Lafarge Procédé de compaction de liant hydraulique et compacts broyés
DE102006025833A1 (de) * 2006-06-02 2007-12-06 Khd Humboldt Wedag Gmbh Rollenpresse insbesondere zur Gutbettzerkleinerung
ITTO20070029A1 (it) * 2007-01-18 2008-07-19 Sasil S P A Cilindraia ad alta compressione per la macinazione, a livelli di finezza molto spinti, di minerali naturali e di prodotti solidi inorganici.
DE102007045373A1 (de) * 2007-09-22 2009-04-02 Cemag Anlagenbau Gmbh Verfahren und Vorrichtung zur Vor- und Fertigmahlung von mineralischen und nichtmineralischen Materialien
DE102010005346A1 (de) * 2010-01-21 2011-07-28 Memari Fard, Nima, 31787 Verfahren zur Vor- und Fertigmahlung von mineralischen und nichtmineralischen Materialien und dazugehörige Multi-Rollenmühle
EP2540396A1 (fr) * 2011-06-30 2013-01-02 Bühler AG Procédé et dispositif de fabrication de farine et/ou de semoule
WO2013156083A1 (fr) * 2012-04-20 2013-10-24 Metso Minerals (Sweden) Ab Appareil d'alimentation et procédé permettant d'alimenter un broyeur à cylindres haute pression en matériau
CN103706433B (zh) * 2014-01-06 2015-05-20 江苏鹏飞集团股份有限公司 二次挤压辊压机
CN113368942A (zh) * 2021-07-21 2021-09-10 南京凯盛国际工程有限公司 一种带预压功能的辊压机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302176A1 (de) * 1983-01-24 1984-07-26 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren und anlage zur kontinuierlichen druckzerkleinerung sproeden mahlgutes
DE3631077C2 (de) * 1985-09-20 1995-04-06 Buehler Ag Mahlwalzwerk
DK418387A (da) * 1987-08-11 1989-02-12 Smidth & Co As F L Fremgangsmaade og apparat til valseknusning og formaling af mineralske materialer

Also Published As

Publication number Publication date
DE3916641A1 (de) 1990-11-29
EP0399192A1 (fr) 1990-11-28
DK0399192T3 (da) 1993-12-06
DE59003195D1 (de) 1993-12-02

Similar Documents

Publication Publication Date Title
DE3302176C2 (fr)
EP0193033B1 (fr) Dispositif de broyage et de mouture de matière à moudre fragile comme par exemple le clinker, le minerai, le charbon et analogues
EP2024091B1 (fr) Presse à rouleaux notamment pour le broyage d'un lit de matière
EP0220681B1 (fr) Installation pour fractionner et broyer des matériaux fragiles et mouillés
EP0406644B1 (fr) Broyeur à rouleaux à courant d'air
EP1073523B1 (fr) Procede et dispositif de broyage fin de substances minerales et non minerales
EP0603481B1 (fr) Procédé et installation pour le broyage de matière à moudre
DE4337215A1 (de) Umlaufmahlanlage
DE3719251A1 (de) Verfahren und anlage zur kontinuierlichen druckzerkleinerung sproeden mahlgutes
EP0399192B1 (fr) Presse à cylindres, notamment pour le broyage par pression de matériau granulé
DE3905123A1 (de) Sichter zum sichten von koernigem gut und mahlanlage mit einschaltung eines solchen sichters
AT392019B (de) Verfahren und anlage zur gemeinsamen mahlung zweier oder mehrerer unterschiedlich mahlbarer sproeder stoffe
DE102009037660A1 (de) Verfahren und Vorrichtung zur Feinmahlung von mineralischen Materialien
DE69215751T2 (de) Vorrichtung und Verfahren zur Zerkleinerung
EP0406591B1 (fr) Procédé et installation de broyage de matière à broyer
EP0413155A2 (fr) Installation de broyage à recyclage pour matière fragile
DE3518543C2 (fr)
EP0829301B1 (fr) Machine à deux rouleaux et procédé pour le traitement en pression de matière granulaire
EP0610573A2 (fr) Procédé de broyage et installation associée
DE3544798A1 (de) Einrichtung zur zerkleinerung und mahlung sproeden mahlgutes, insbesondere von feuchtem ausgangsmaterial
DE4023624C2 (de) Rohrkugelmühlen zur effektiven Desagglomeration und Zerkleinerung von hochdruckzerkleinertem spröden Material
EP0648539B1 (fr) Installation de broyage en circuit fermé
DE3711926A1 (de) Einrichtung zur zerkleinerung und mahlung sproeden mahlgutes wie z. b. zementklinker, erz, kohle oder dergleichen
EP0901828A1 (fr) Procédé et installation de broyage en circuit fermé de matériau friable
DE3919416C2 (de) Anlage zur Zerkleinerung bzw. Mahlung wenigstens zweier unterschiedlich mahlbarer spröder Gutmaterialkomponenten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE DK ES FR GB IT

17P Request for examination filed

Effective date: 19910410

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KLOECKNER-HUMBOLDT-DEUTZ AG

17Q First examination report despatched

Effective date: 19920508

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE DK ES FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19931027

Ref country code: GB

Effective date: 19931027

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59003195

Country of ref document: DE

Date of ref document: 19931202

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19940128

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19931027

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940603

Year of fee payment: 5

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: BUEHLER AG

Effective date: 19940720

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950309

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 19950322

Year of fee payment: 6

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19950608