EP0403778A2 - Procédé d'exploitation d'une installation de broyage pour matériau friable - Google Patents

Procédé d'exploitation d'une installation de broyage pour matériau friable Download PDF

Info

Publication number: EP0403778A2
Authority: EP; European Patent Office
Prior art keywords: roller press; semolina; bunker; discharge; level
Prior art date: 1989-06-20
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

EP90108764A

Other languages

German (de)

English (en)

Other versions

EP0403778B1 (fr

EP0403778A3 (fr

Inventor

Siegfried Strasser

Franz Göddecke

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

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.)

1989-06-20

Filing date

1990-05-10

Publication date

1990-12-27

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6383060&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0403778(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1990-05-10 Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG

1990-12-27 Publication of EP0403778A2 publication Critical patent/EP0403778A2/fr

1991-05-29 Publication of EP0403778A3 publication Critical patent/EP0403778A3/fr

1994-07-20 Application granted granted Critical

1994-07-20 Publication of EP0403778B1 publication Critical patent/EP0403778B1/fr

2010-05-10 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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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
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
- 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
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
- B02C23/22—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating with recirculation of material to crushing or disintegrating zone

Definitions

the invention relates to a plant for comminuting or grinding brittle material, comprising a high-pressure high-pressure roller press with material bed comminution of the material and a deagglomerator / sifter downstream of the roller press, the coarse material discharge of which is at least partially recirculated to the material feed shaft of the roller press .
the invention also relates to a method for operating such a system.
the feed material supplied to the nip When operating the high-pressure roller press for compacting or for pressure treatment of the granular material, the feed material supplied 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 drawn-in ground material 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 material bed comminution.
the fresh material and the semolina recirculated by the classifier have been placed directly in the feed chute of the roller press.
the filling level in the feed hopper was maintained in that more or less large volume flows of fresh material were conveyed into the shaft depending on the filling level, but this can result in uneven control behavior, ie considerable fluctuations in the system.
the feed capacity of the rollers would be improved per se if the feed material was fed in in such an amount that a high load of feed material was formed in a correspondingly high feed shaft above the roll gap.
a large or high feed hopper arranged above the nip of the high-pressure roller press can, however, cause the following difficulties: Is the feed material given in the feed shaft of the roller press at least partly very fine-grained, by adding z. B. large amounts of the grains of a classifier downstream of the classifier can be recirculated, so especially at high feed chutes with high material levels and low bulk densities of the feed material fed to the feed shaft of the roll press, increasingly caused by large quantities already relatively fine Recirculated semolina to the roller press, the problem arises that the air pressed by the high pressure from the feed material can no longer escape, which worsens the ability of the rollers to pull in, reduces the throughput of the roller press or impairs the energy savings that can be achieved and leads to uneven operation of the Roll press leads.
the invention is based on the object of avoiding these disadvantages and of creating a comminution system of the type mentioned at the outset and an associated operating method which, in the event of necessary control interventions to maintain the fill level of the roller press feed chate, manages with only slight system fluctuations.
the classifier downstream of the high-pressure roller press has so far always been recirculated directly into the roller press feed hopper, in which the fresh material to be minced is also fed, it is characteristic of the present invention that the classifier is not immediately the roller press feed chute are introduced, but are first buffered in a semolina bunker that a discharge amount dosing, z. B. has a weigh feeder.
the fill level in the feed slot of the The roller press is measured and, depending on the level of this fill level, there is a control intervention not on the quantity of fresh material supplied to the feed hopper, but on the discharge quantity metering device of the semolina bunker and thus on the amount of semolina conveyed by the semolina bunker via the metering element in the roller press feed shaft .
the fill level in the roller press feed hopper can be regulated to a constant level or quantity or within permitted limit values.
the amount of semolina recirculated by the classifier is approx.
roller press feed chute in which it is ensured that it is always fully filled with goods, can remain comparatively small or low, so that the difficulties mentioned at the outset associated with high feed chutes, such as the venting problem, wall friction effects, segregation effects or the like, are reduced or avoided .
a control intervention can take place on a fresh material quantity dosing element connected upstream of the feed hopper.
the fill level or fill level in the semolina bunker can be regulated constantly or within permitted limit values, the regulating behavior preferably being set such that only small fluctuations in the quantity of fresh material occur.
the drawing shows schematically the flow diagram of a circular grinding for the production of z. B. cement.
the first stage of the cycle grinding consists of a high-pressure roller press (10), on the nip of which the feed material to be comminuted or ground, e.g. B. cement clinker and gypsum on metering belt scales (11 and 12), conveyor (13) and a comparatively small or low feed shaft (14) is abandoned.
the grain size of an essential part of the feed material can be larger than the width of the narrowest nip of z. B. 20 mm between the two press rolls, which can have a diameter of 900 mm, for example.
the pressing force of the rollers of the roller press (10) pressing the material is more than 2 MN / m roller length, for example 6 to 9 MN / m.
the feed material is shredded in the gap between the rollers by a combined single-grain shredder and material bed shredder.
the Schülpen (15) are on a conveyor (16), z. B. bucket elevator for the good entry of a classifier (17) transported into the view air (18) flows through a spiral housing.
a rotating deagglomerator which can also be an impact crusher, and slugs (15) are in the sack ter disagglomerated and sighted. It is also possible to connect an external deagglomerator / shredder (19) upstream of the classifier (17).
the classifying air / fine material discharge of the classifier (17) leads via a cyclone separator (20), suction fan (21) and filter (22) to a suction fan (23) which frees the exhaust gas (24) from finished goods, ie finished cement (25, 26) subtracts the plant with a grain size of z. B. leaves less than 90 um.
a partial flow of the exhaust gas flow leaving the induced draft fan (21) is recirculated as classifying air (18) into the classifier (17).
the coarse grain fraction (meal) (27) of the classifier (17) is first temporarily stored in a semolina bunker (28), which can be large in comparison to the roller press feed hopper (14) and which has a discharge quantity metering device such as, for. B. dosing belt weigher (29) which is connected upstream of the feed hopper (14).
the fill level (L 1) in the feed hopper (14) of the roller press (10) is measured and, depending on this fill level, a control unit (30) intervenes in the feed belt weigher (29) of the semolina hopper (28) in such a way that the fill level (L 1) in the roller press feed hopper (14) always at a constant height or regulated within permitted limits.
the fill level (L 2) in the semolina bunker (28) is also measured and, depending on this fill level, a control intervention on the fresh material quantity dosing element (11) and / or fresh material quantity dosing element (12) takes place via a control unit (31).
the level (L 2) in the semolina bunker (28) can also be regulated to a constant level or at least within permitted limit values.
the feed hopper (14) and the semolina bunker (28) can be weighed by z. B. stored on pressure cells.
the roller press discharge (15) is so long via a material switch or via a broken line bypass (32) bypassing the sifter (17) conveyed directly into the semolina bunker (28) until the desired fill level (L 2) or fill level is reached in the semolina bunker, after which the roller press discharge (15), the sifter (17) and its semolina (27) the semolina bunker (28 ) are forwarded. Thanks to this start-up technology, the grinding circuit can be set up more quickly and the dosing belt scales can remain small.

Landscapes

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

EP19900108764 1989-06-20 1990-05-10 Procédé d'exploitation d'une installation de broyage pour matériau friable Expired - Lifetime EP0403778B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3920005		1989-06-20
DE19893920005 DE3920005A1 (de)	1989-06-20	1989-06-20	Anlage zur zerkleinerung bzw. mahlung von sproedem gut und verfahren zum betrieb einer solchen anlage

Publications (3)

Publication Number	Publication Date
EP0403778A2 true EP0403778A2 (fr)	1990-12-27
EP0403778A3 EP0403778A3 (fr)	1991-05-29
EP0403778B1 EP0403778B1 (fr)	1994-07-20

Family

ID=6383060

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19900108764 Expired - Lifetime EP0403778B1 (fr)	1989-06-20	1990-05-10	Procédé d'exploitation d'une installation de broyage pour matériau friable

Country Status (3)

Country	Link
EP (1)	EP0403778B1 (fr)
DE (2)	DE3920005A1 (fr)
DK (1)	DK0403778T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5375776A (en) *	1992-11-25	1994-12-27	Krupp Polysius Ag	Method and apparatus for the comminution of material for grinding
DE102006049742A1 (de) *	2006-10-21	2008-04-24	Khd Humboldt Wedag Gmbh	Sichter zum Sichten körnigen Gutes
WO2011157482A1 (fr) *	2010-06-16	2011-12-22	Khd Humboldt Wedag Gmbh	Installation de broyage à circulation à tampon intégré
CN107930823A (zh) *	2017-11-13	2018-04-20	盐城吉达环保设备有限公司	一种串联选粉机粉磨系统工艺

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4126899A1 (de) *	1991-08-14	1993-02-18	Krupp Polysius Ag	Verfahren und anlage zum zerkleinern von sproedem mahlgut
DE4223762B4 (de) *	1992-07-18	2009-07-23	Khd Humboldt Wedag Gmbh	Sichtereinrichtung zum Sichten von körnigem Gut und Umlaufmahlanlage mit Einschaltung einer solchen Sichtereinrichtung
DE4334904A1 (de) *	1993-10-13	1995-04-20	Kloeckner Humboldt Deutz Ag	Umlaufmahlanlage
DE4414367A1 (de) *	1994-04-25	1995-10-26	Krupp Polysius Ag	Verfahren zur Regelung der einem Bunker zuzuführenden Gutmenge
DE19719445A1 (de) *	1997-05-07	1998-11-12	Krupp Polysius Ag	Verfahren und Anlage zur Zerkleinerung von Mahlgut
DE19757431A1 (de) *	1997-12-23	1999-06-24	Kloeckner Humboldt Wedag	Verfahren zum Betrieb einer Kreislaufmahlanlage zum Mahlen von sprödem Gut
CN103464240A (zh) *	2013-09-17	2013-12-25	中冶北方（大连）工程技术有限公司	高压辊磨机防偏析配矿系统
CN103990538A (zh) *	2014-06-03	2014-08-20	南京凯盛国际工程有限公司	一种辊压机用备料装置
CN103990509A (zh) *	2014-06-03	2014-08-20	南京凯盛国际工程有限公司	一种新型辊压机
DE102014015549A1 (de) *	2014-10-22	2016-04-28	Thyssenkrupp Ag	Mahlanlage zum Zerkleinern von Mahlgut sowie Verfahren zum Zerkleinern von Mahlgut
DE102017115856A1 (de) *	2017-07-14	2019-01-17	Maschinenfabrik Köppern Gmbh & Co. Kg	Walzenpresse und Verfahren zur Bestimmung des Füllstandes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE566774A (fr) *
DE2032736C3 (de) *	1970-07-02	1975-07-24	Polysius Ag, 4723 Neubeckum	Verfahren zum Vermählen von grobkörnigen Mineralien
DE2620461A1 (de) *	1976-05-08	1977-11-24	Kloeckner Humboldt Deutz Ag	Mahltrocknungsanlage
DE3520069A1 (de) *	1985-06-04	1986-12-04	Krupp Polysius Ag, 4720 Beckum	Verfahren und anlage zur zweistufigen zerkleinerung
DE3719251A1 (de) *	1987-06-10	1988-12-22	Kloeckner Humboldt Deutz Ag	Verfahren und anlage zur kontinuierlichen druckzerkleinerung sproeden mahlgutes

1989
- 1989-06-20 DE DE19893920005 patent/DE3920005A1/de not_active Withdrawn
1990
- 1990-05-10 DK DK90108764T patent/DK0403778T3/da active
- 1990-05-10 DE DE59006479T patent/DE59006479D1/de not_active Expired - Fee Related
- 1990-05-10 EP EP19900108764 patent/EP0403778B1/fr not_active Expired - Lifetime

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5375776A (en) *	1992-11-25	1994-12-27	Krupp Polysius Ag	Method and apparatus for the comminution of material for grinding
DE102006049742A1 (de) *	2006-10-21	2008-04-24	Khd Humboldt Wedag Gmbh	Sichter zum Sichten körnigen Gutes
WO2008046592A1 (fr) *	2006-10-21	2008-04-24	Khd Humboldt Wedag Gmbh	crible de criblage de produits granuleux
WO2011157482A1 (fr) *	2010-06-16	2011-12-22	Khd Humboldt Wedag Gmbh	Installation de broyage à circulation à tampon intégré
CN102821863A (zh) *	2010-06-16	2012-12-12	Khd洪保德韦达克有限公司	具有集成的缓冲器的循环破碎机
US20130082127A1 (en) *	2010-06-16	2013-04-04	Siegfried Strasser	Closed-circuit grinding plant having an integrated buffer
CN107930823A (zh) *	2017-11-13	2018-04-20	盐城吉达环保设备有限公司	一种串联选粉机粉磨系统工艺

Also Published As

Publication number	Publication date
DE59006479D1 (de)	1994-08-25
DE3920005A1 (de)	1991-01-03
DK0403778T3 (da)	1994-10-31
EP0403778B1 (fr)	1994-07-20
EP0403778A3 (fr)	1991-05-29

Legal Events

Date	Code	Title	Description
1990-11-10	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
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1992-01-08	17P	Request for examination filed	Effective date: 19911115
1992-01-15	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: KLOECKNER-HUMBOLDT-DEUTZ AG
1993-01-13	17Q	First examination report despatched	Effective date: 19921201
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1994-07-20	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: 19940720 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19940720 Ref country code: GB Effective date: 19940720
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1995-02-01	GBV	Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]	Effective date: 19940720
1995-04-28	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
1995-06-21	26	Opposition filed	Opponent name: KRUPP POLYSIUS AG Effective date: 19950420
1997-01-31	PLBL	Opposition procedure terminated	Free format text: ORIGINAL CODE: EPIDOS OPPC
1997-04-11	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19970411 Year of fee payment: 8
1997-05-02	RAP2	Party data changed (patent owner data changed or rights of a patent transferred)	Owner name: DEUTZ AKTIENGESELLSCHAFT
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1997-05-16	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: OPPOSITION PROCEDURE CLOSED
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