EP0648539A2 - Installation de broyage en circuit fermé - Google Patents

Installation de broyage en circuit fermé Download PDF

Info

Publication number: EP0648539A2
Authority: EP; European Patent Office
Prior art keywords: grinding; fine; classifier; roller press; circuit
Prior art date: 1993-10-13
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

EP94114845A

Other languages

German (de)

English (en)

Other versions

EP0648539B1 (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

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.)

1993-10-13

Filing date

1994-09-21

Publication date

1995-04-19

1994-09-21 Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG

1995-04-19 Publication of EP0648539A2 publication Critical patent/EP0648539A2/fr

1995-10-11 Publication of EP0648539A3 publication Critical patent/EP0648539A3/fr

1999-07-07 Application granted granted Critical

1999-07-07 Publication of EP0648539B1 publication Critical patent/EP0648539B1/fr

2014-09-21 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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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
- 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 comminution of the feed material and with a downstream disagglomerator / sifter, the size (coarse sifter) of which is recirculated to the roller press.
a method for comminuting or grinding brittle material to be ground is known (EP-B-0 084 383, FIGS. 3 and 4), in which the material to be ground is pressed under high pressure in the nip of a high-pressure roller press, which in part leads to particle destruction and in part leads to the creation of cracks in the interior of the particle and is visibly expressed in the formation of agglomerates (so-called Schülpen).
the individual particles of the material to be ground are crushed in the narrowest roller gap of the high-pressure roller press in a material bed, ie in a bed of material compressed between two surfaces, one speaks of the so-called material bed size reduction.
the gut agglomerates coming from the high-pressure roller press can be disagglomerated or dissolved with comparatively little expenditure of energy, and they are then fed to a classifier, the size of which is completely recirculated to the high-pressure roller press.
the agglomerates from the roller press already contain fine material that is extracted from the classifier of the closed-circuit grinding system together with the classifying air.
this known finished grinding system which can produce a finished product without the ball mill being connected to the high-pressure roller press, is characterized by a high material circulation rate, i.e. the quantity of semolina recirculated from the classifier to the roll press is large, which makes a large classifier as well as a large high-pressure roller press, whose throughput in t / h is limited to a certain value in practice.
the known rotary grinding plant is limited in the variation of the desired product quality such as grain size, grain distribution, etc. B. not simultaneously two differently fine finished products of the same good material such. B. Produce cement.
the invention has for its object to provide an overall characterized by a low specific energy requirement using a high-pressure roller press system, which is very variable in terms of the product quality generated and z.
B. is able to simultaneously produce at least two different fine finished product 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.
So z. B. the withdrawn from the classifier of the first grinding cycle, the visual air flow, which is loaded with fine and medium material, introduced directly into the classifier of the second grinding circuit, the exhaust side Separator and induced draft fan is connected downstream.
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 cm2 / 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 cm2 / 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 for high finished goods output in t / h and for high fineness of the end product (withdrawn from the second grinding cycle), as would not be possible with the installation of only a single bed-crushing high-pressure roller press.
the two classifiers and high pressure roller presses can be optimized in their respective grinding circuits with regard to their operating conditions, e.g. B. with regard to the roll dimensions, roll surface structures, roll circumferential speeds, 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 in the recirculating grinding system, through which a partial flow of the classifier from the first classifier to the first high-pressure roller press leads to the second high-pressure roller press (second grinding circuit) is led.
this classifier connection line the first grinding circuit can be relieved in a targeted manner with a certain amount of semolina and the second grinding circuit can be specifically loaded with this amount of semolina.
the circulation grinding system is composed of two grinding circuits connected in series, of which the first grinding circuit is a high-pressure roller press (10) with a downstream disagglomerator / sifter (11) and the second grinding circuit is also a high-pressure roller press (12) with a downstream disagglomerator / sifter (13).
Both roller presses each have two rotatably mounted, counter-rotating rollers that are separated from one another by a press roll nip.
Fresh produce (14) e.g. B. not pre-shredded cement clinker
the roller press (10) is given up and subjected to a combined single grain shredding and material bed shredding.
the material comminuted in the narrowest nip by comminution of the material bed emerges from the nip and comminuted and, if necessary, partially agglomerated, ie pressed into flakes (15), the proportion of particles of the cement to be produced which have already been reduced to the desired fineness.
the slugs (15) are preferably dynamic via the conveyor or line (16) Sifter (11) is abandoned, which can be equipped in its upper area with an impact crusher (17), in which the flake material (15) is deagglomerated before it enters the classifying area of the sifter (11).
an impact crusher (17) in which the flake material (15) is deagglomerated before it enters the classifying area of the sifter (11).
fine material / middle class (19) is separated from the disagglomerated good together with the classifier exhaust air, while the coarse grain fraction (20) [large size] leaving the classifier (11) goes to the roller press ( 10) is recirculated. It is also possible to feed at least a partial flow of the fresh material to the first grinding circuit instead of (14) at (21).
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 fine material (22) is separated from the medium (23), the latter the high-pressure roller press (12) for material bed comminution is fed, from which the Schülpenmaterial (24) via the conveyor or line (25) to the deagglomeration 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 cm2 / g measured according to Blaine can be discharged, wherein the separator (33) leaving exhaust air flow can be fed back at least in part into the connecting line (19) via induced draft 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 connecting line (19) there between the two grinding circuits is replaced by a connecting line (35) in which the fine / medium material is conveyed to the second grinding circuit, which in a separator (11 ) downstream separator (36) has been separated from the classifier exhaust air (37), which is recirculated to the classifier (11) in a separate circuit by a separate suction fan (38).
the fine material / medium (35) from the first grinding circuit is introduced via line (39 and / or 40) into the second grinding circuit, specifically into the material supply line and / or into the material extraction line of the deagglomerator / classifier (26, 13).
the classifier (13) of the second grinding circuit is also equipped with its own classifying air recirculation line (41), the classifying air recirculation being accomplished by the induced draft fan (28).
the finished products (A and B) obtained simultaneously can also be mixed with one another in order to produce very specific desired finished product qualities. Otherwise, the same parts in the exemplary embodiments of FIGS. 1, 2 and 3 are provided with the same reference numbers.

Landscapes

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

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 true EP0648539A2 (fr)	1995-04-19
EP0648539A3 EP0648539A3 (fr)	1995-10-11
EP0648539B1 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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2015078787A1 (fr) *	2013-11-26	2015-06-04	Khd Humboldt Wedag Gmbh	Procédé de production de ciment
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
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***
WO2019030226A1 (fr) *	2017-08-08	2019-02-14	Thyssenkrupp Industrial Solutions Ag	Procédé et installation de fabrication de ciment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
KR101821088B1 (ko)	2008-07-02	2018-01-22	뷔흘러 에이지	가루 및/또는 세몰리나를 만드는 장치 및 방법
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***

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2616359A1 (fr) *	1987-06-10	1988-12-16	Kloeckner Humboldt Deutz Ag	Procede et installation pour le broyage continu par compression de materiaux cassants
DE3744163A1 (de) *	1987-12-24	1989-07-06	Kloeckner Humboldt Deutz Ag	Verfahren und anlage zur aufbereitung von erz, kohle oder anderen mineralien
DE3915432A1 (de) *	1989-05-11	1990-11-15	Kloeckner Humboldt Deutz Ag	Verfahren zur herstellung von normgerechtem zement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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

1993
- 1993-10-13 DE DE4334904A patent/DE4334904A1/de not_active Withdrawn
1994
- 1994-09-21 DK DK94114845T patent/DK0648539T3/da active
- 1994-09-21 EP EP94114845A patent/EP0648539B1/fr not_active Expired - Lifetime
- 1994-09-21 DE DE59408467T patent/DE59408467D1/de not_active Expired - Fee Related

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2616359A1 (fr) *	1987-06-10	1988-12-16	Kloeckner Humboldt Deutz Ag	Procede et installation pour le broyage continu par compression de materiaux cassants
DE3744163A1 (de) *	1987-12-24	1989-07-06	Kloeckner Humboldt Deutz Ag	Verfahren und anlage zur aufbereitung von erz, kohle oder anderen mineralien
DE3915432A1 (de) *	1989-05-11	1990-11-15	Kloeckner Humboldt Deutz Ag	Verfahren zur herstellung von normgerechtem zement

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2015078787A1 (fr) *	2013-11-26	2015-06-04	Khd Humboldt Wedag Gmbh	Procédé de production de ciment
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
WO2019030226A1 (fr) *	2017-08-08	2019-02-14	Thyssenkrupp Industrial Solutions Ag	Procédé et installation de fabrication de ciment
CN111032592A (zh) *	2017-08-08	2020-04-17	蒂森克虏伯工业解决方案股份公司	用于生产水泥的方法和设备
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***

Also Published As

Publication number	Publication date
DE59408467D1 (de)	1999-08-12
EP0648539B1 (fr)	1999-07-07
EP0648539A3 (fr)	1995-10-11
DE4334904A1 (de)	1995-04-20
DK0648539T3 (da)	2000-01-17

Legal Events

Date	Code	Title	Description
1995-03-03	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
1995-04-19	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE DK FR
1995-08-18	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
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1995-10-18	17P	Request for examination filed	Effective date: 19950824
1997-05-02	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: DEUTZ AKTIENGESELLSCHAFT
1998-04-01	17Q	First examination report despatched	Effective date: 19980216
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