EP0399192A1 - 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

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Publication number
EP0399192A1
EP0399192A1 EP90106731A EP90106731A EP0399192A1 EP 0399192 A1 EP0399192 A1 EP 0399192A1 EP 90106731 A EP90106731 A EP 90106731A EP 90106731 A EP90106731 A EP 90106731A EP 0399192 A1 EP0399192 A1 EP 0399192A1
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EP
European Patent Office
Prior art keywords
roller
press
rollers
nip
compacting
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.)
Granted
Application number
EP90106731A
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German (de)
English (en)
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EP0399192B1 (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
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Kloeckner Humboldt Deutz AG
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Publication date
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Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0399192A1 publication Critical patent/EP0399192A1/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
    • 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 rotatably mounted, counter-rotating rollers that are separated from one another by a press roller nip, in particular for pressure reduction.
  • 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 and in part to produce cracks in the particle neren 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 method is characterized overall by a low specific energy requirement.
  • Schülpen agglomerates
  • 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 nip are crushed in a bed of material, ie in a bed of material compressed between the two roller 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 appropriate, 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 or that the porosity of the classifier is greater than that of the fresh feed.
  • 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 nip 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 loose 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-compacting 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 Feed material pre-compressed before it is drawn into the press roll nip, ie the porosity of the feed material is reduced before it is drawn into the press roll nip, e.g. B. from a porosity of 60 to 70% to a porosity of z. B. 30 to 40%, which then in the press nip even using the high pressure to z. B. 20 to 25% can be reduced.
  • 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 the material bed size reduction, is reached 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 (for example about 25% less than 90 ⁇ m) can already be relatively high.
  • the slugs (14) are then deagglomerated and sifted in a sifter, not shown, the coarse grain fraction (grains) of which is recirculated to the feed chute (13) of the roller press.
  • the air volume or the loose 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) arranged, the diameter of which is smaller than the diameter water of 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 material intake capacity in the gap between the rollers (10, 11) is considerably improved, the maximum pressure occurring in the material bed size reduction in the area of the narrowest roller gap is reached faster and more reliably, the peripheral speed of the Rollers (10, 11) can be increased, the mass throughput of the roller press according to the invention is also increased, as is the shredding result, because energy-consuming air cushions in the pressed material are largely avoided when carrying out the material bed shredding.
  • the advantageous low specific energy requirement (kWh / t) associated with material bed comminution can be fully utilized with the roller press according to the invention.
  • 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 nip between the Press rollers (10, 11) are drawn in by friction to feed a material with always uniform and reduced porosity, which promotes 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).
  • the invention is not only limited to roller presses for pressure comminution, in particular material bed comminution of granular material, but can also be used for roller presses whose aim is to produce agglomerates, e.g. B. for briquette roller presses or smooth roller presses for the production of agglomerates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Glanulating (AREA)
  • Crushing And Grinding (AREA)
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 true EP0399192A1 (fr) 1990-11-28
EP0399192B1 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)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0532771A1 (fr) * 1990-02-21 1993-03-24 Fuller Company Broyeur à rouleaux à passages multiples
EP0829301A1 (fr) * 1996-08-16 1998-03-18 DEUTZ Aktiengesellschaft Machine à deux rouleaux et procédé pour le traitement en pression de matière granulaire
EP0901828A1 (fr) * 1997-09-02 1999-03-17 KHD Humboldt-Wedag AG Procédé et installation de broyage en circuit fermé de matériau friable
RU2264261C2 (ru) * 1999-11-02 2005-11-20 Агрекс С.П.А. Вальцовая мельница для измельчения сыпучих материалов, в частности зерна
EP1717215A1 (fr) * 2005-04-19 2006-11-02 Lafarge Procédé de compaction de liant hydraulique et compacts broyés
EP1946844A1 (fr) * 2007-01-18 2008-07-23 SASIL S.p.A. Jeu de broyeur à cylindres haute compression pour le broyage, aux niveaux de finesse les plus élevés, de minéraux naturels et de produits inorganiques solides
JP2010538830A (ja) * 2007-09-22 2010-12-16 メマリ ファード，ペトラ 鉱物性および非鉱物性材料の粗粉砕および微粉砕のための方法および装置
WO2011089241A1 (fr) 2010-01-21 2011-07-28 Nima Memari Fard Procédé et dispositif de prébroyage et de broyage de matériaux minéraux et non minéraux
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
CN103706433A (zh) * 2014-01-06 2014-04-09 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
CN117385170A (zh) * 2023-10-16 2024-01-12 中南大学 一种全海砂矿高品质钒钛球团的制备方法
EP4732953A1 (fr) * 2024-10-24 2026-04-29 KHD Humboldt Wedag GmbH Presse à rouleaux haute pression avec trois ou plus rouleaux

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006025833A1 (de) * 2006-06-02 2007-12-06 Khd Humboldt Wedag Gmbh Rollenpresse insbesondere zur Gutbettzerkleinerung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084383B1 (fr) * 1983-01-24 1986-06-18 Klöckner-Humboldt-Deutz Aktiengesellschaft Procédé de broyage continu par compression de matériau friable
DE3631077A1 (de) * 1985-09-20 1987-04-02 Buehler Ag Geb Mahlwalzwerk
DE3823929A1 (de) * 1987-08-11 1989-02-23 Smidth & Co As F L Verfahren und vorrichtung zum walzenbrechen und -mahlen von mineralischen stoffen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084383B1 (fr) * 1983-01-24 1986-06-18 Klöckner-Humboldt-Deutz Aktiengesellschaft Procédé de broyage continu par compression de matériau friable
DE3631077A1 (de) * 1985-09-20 1987-04-02 Buehler Ag Geb Mahlwalzwerk
DE3823929A1 (de) * 1987-08-11 1989-02-23 Smidth & Co As F L Verfahren und vorrichtung zum walzenbrechen und -mahlen von mineralischen stoffen

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0532771A1 (fr) * 1990-02-21 1993-03-24 Fuller Company Broyeur à rouleaux à passages multiples
EP0829301A1 (fr) * 1996-08-16 1998-03-18 DEUTZ Aktiengesellschaft Machine à deux rouleaux et procédé pour le traitement en pression de matière granulaire
EP0901828A1 (fr) * 1997-09-02 1999-03-17 KHD Humboldt-Wedag AG Procédé et installation de broyage en circuit fermé de matériau friable
RU2264261C2 (ru) * 1999-11-02 2005-11-20 Агрекс С.П.А. Вальцовая мельница для измельчения сыпучих материалов, в частности зерна
EP1717215A1 (fr) * 2005-04-19 2006-11-02 Lafarge Procédé de compaction de liant hydraulique et compacts broyés
WO2006111642A3 (fr) * 2005-04-19 2007-03-22 Lafarge Sa Procede de compaction de liant hydraulique et compacts broyes
EP1946844A1 (fr) * 2007-01-18 2008-07-23 SASIL S.p.A. Jeu de broyeur à cylindres haute compression pour le broyage, aux niveaux de finesse les plus élevés, de minéraux naturels et de produits inorganiques solides
JP2010538830A (ja) * 2007-09-22 2010-12-16 メマリ ファード，ペトラ 鉱物性および非鉱物性材料の粗粉砕および微粉砕のための方法および装置
WO2011089241A1 (fr) 2010-01-21 2011-07-28 Nima Memari Fard Procédé et dispositif de prébroyage et de broyage de matériaux minéraux et non minéraux
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
WO2013001093A3 (fr) * 2011-06-30 2013-04-11 Bühler AG Procédé et dispositif pour la fabrication de farine et/ou de semoule
CN103764289A (zh) * 2011-06-30 2014-04-30 布勒股份公司 用于制造粉末和/或粗粒的方法和装置
CN103764289B (zh) * 2011-06-30 2017-03-01 布勒股份公司 用于制造粉末和/或粗粒的方法和装置
US10099222B2 (en) 2011-06-30 2018-10-16 Bühler AG Method and device for producing flour and/or semolina
US10933423B2 (en) 2011-06-30 2021-03-02 Bühler AG Method and device for producing flour and/or semolina
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
DK178877B1 (en) * 2012-04-20 2017-04-18 Metso Minerals (Sweden) Ab Feeder apparatus and method for feeding material to a high pressure roller crusher
CN103706433A (zh) * 2014-01-06 2014-04-09 江苏鹏飞集团股份有限公司 二次挤压辊压机
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
CN117385170A (zh) * 2023-10-16 2024-01-12 中南大学 一种全海砂矿高品质钒钛球团的制备方法
EP4732953A1 (fr) * 2024-10-24 2026-04-29 KHD Humboldt Wedag GmbH Presse à rouleaux haute pression avec trois ou plus rouleaux

Also Published As

Publication number Publication date
EP0399192B1 (fr) 1993-10-27
DE3916641A1 (de) 1990-11-29
DE59003195D1 (de) 1993-12-02
DK0399192T3 (da) 1993-12-06

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