EP0292739B1 - Procédé et installation pour le broyage de matière à broyer - Google Patents
Procédé et installation pour le broyage de matière à broyer Download PDFInfo
- Publication number
- EP0292739B1 EP0292739B1 EP88107072A EP88107072A EP0292739B1 EP 0292739 B1 EP0292739 B1 EP 0292739B1 EP 88107072 A EP88107072 A EP 88107072A EP 88107072 A EP88107072 A EP 88107072A EP 0292739 B1 EP0292739 B1 EP 0292739B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- sifter
- track
- sifting
- tailings
- 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
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
- B02C21/00—Disintegrating plant with or without drying of the material
-
- 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
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
Definitions
- the invention relates to a method (according to the preamble of claim 1) and a system (according to the preamble of claim 5) for crushing brittle regrind.
- the invention is therefore based on the object of designing a method (in accordance with the preamble of claim 1) and a system (in accordance with the preamble of claim 5) in such a way that the throughput of the system is considerably increased with comparatively low system complexity.
- the plant illustrated in FIG. 1 for comminuting brittle ground material for example cement clinker, contains a roller mill 1, a classifier 2 arranged above it, a material bed roller mill 3, a bucket elevator 4, a fine material separator 5 and a number of other ones in connection with the Function of described system parts.
- the roller mill 1 shown in its details from FIG. 2 has a horizontal grinding path 7 which rotates around the vertical axis 6 and on which grinding rollers 8, 9 are supported with pressure.
- the grinding track 7 is driven by a drive motor 10 and a gear (not illustrated in detail) in the base of the roller mill 1.
- An adjustable nozzle ring 11 is arranged on the circumference of the grinding track 7, through which an air flow (arrows 12) is fed to the grinding track 7.
- the dynami arranged above the roller mill 1 cal classifier 2 contains a fixed (suitably adjustable) guide vane ring 15 and a sight basket 18 driven by a motor 17 via a shaft 16.
- the shaft is supported at its lower end via radial struts 19.
- the shaft 16 also carries above the viewing basket 18 a spreading plate 20, to which the material to be sifted is fed via nozzles 21, 22 from the bucket elevator 4 (arrow 23).
- the classifier 2 has a funnel 24 below the guide vane ring 15, through which the grains can be guided back onto the grinding path 7 of the roller mill 1.
- the raw material is fed onto the grinding track 7 via an opening 25 (arrow 26).
- a semolina screw 27 At the lower end of the funnel 24 there is also connected a semolina screw 27, the speed of which can be regulated and which feeds an adjustable part of the semolina directly to the roller mill 3 (arrow 28 in FIG. 1).
- the air stream carrying the fine material is discharged from the classifier 2 via a nozzle 29 (arrow 30).
- the regrind to be crushed is the roller mill 1 fed from a silo 31 via a weigh feeder 32 and an air seal 33.
- the ground material that has been comminuted sufficiently on the grinding path 7 is conveyed to the classifier 2 by the air flow.
- the fine material leaving the classifier together with the air flow is separated in the separator 5.
- the grains accumulating in the sifter 2 are partly returned to the grinding path 7 of the roller mill 1.
- a further, adjustable portion of the semolina reaches the roller mill 3 directly via the semolina screw 27.
- This material bed roller mill is also supplied with the regrind that falls down over the edge of the grinding track 7.
- the rollers of which are pressed against one another at high pressure, the material undergoes comminution of the material bed with clear formation of agglomerates.
- the regrind discharged from the roller mill 3 is conveyed upwards via the bucket elevator 4 and fed via a flap 34 either to the spreading plate 20 of the classifier 2 or to another purpose (vehicle 35) (if desired, this stream of material passed via the bucket elevator 4 can also be divided).
- the agglomerates of the ground material formed in the roller mill 3 undergo deagglomeration.
- the finished goods that already exist after the roller mill 3 has passed through are viewed in this way and are no longer fed to the roller mill 1 again.
- the roller mill 1 is significantly relieved. This results in a significant reduction in pressure loss for the roller mill, which leads to significant energy savings in the pneumatic conveying of the ground material.
- the bucket conveyor material is already largely dried, since in the roller mill 3 the ground material falling down over the edge of the grinding path 7 is ground together with the largely dried semolina (supplied via the semolina screw 27).
- the pneumatic transport of the ground material in a conventional grinding plant using a roller mill takes up a relatively large proportion of the total that is used for grinding Use energy.
- the regrind falling down through the nozzle ring 11 is subjected to further comminution by means of the material bed roller mill 3 and fed to the classifier 2 via the bucket elevator 4.
- This regrind, which is fed directly to the classifier contains (depending on the type of material to be ground) up to 50% finished product. This portion of the material is thus removed from the pneumatic transport. This results in an up to 40% lower pressure loss of the grinding system, which results in a correspondingly high energy saving on the mill fan.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3717976 | 1987-05-27 | ||
DE19873717976 DE3717976A1 (de) | 1987-05-27 | 1987-05-27 | Verfahren und anlage zur zerkleinerung von mahlgut |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0292739A2 EP0292739A2 (fr) | 1988-11-30 |
EP0292739A3 EP0292739A3 (en) | 1989-11-15 |
EP0292739B1 true EP0292739B1 (fr) | 1991-03-06 |
Family
ID=6328599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88107072A Expired - Lifetime EP0292739B1 (fr) | 1987-05-27 | 1988-05-03 | Procédé et installation pour le broyage de matière à broyer |
Country Status (8)
Country | Link |
---|---|
US (1) | US4889289A (fr) |
EP (1) | EP0292739B1 (fr) |
BR (1) | BR8802553A (fr) |
CA (1) | CA1301134C (fr) |
DE (2) | DE3717976A1 (fr) |
DK (1) | DK286288A (fr) |
ES (1) | ES2021408B3 (fr) |
ZA (1) | ZA883511B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11833520B2 (en) | 2018-06-08 | 2023-12-05 | Sms Group Gmbh | Dry preparation of kaolin in the production of HPA |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3815217A1 (de) * | 1988-05-04 | 1989-11-16 | Pfeiffer Christian Maschf | Verfahren zur zerkleinerung von sproedem mahlgut |
DE3921823A1 (de) * | 1989-07-03 | 1991-01-17 | Krupp Polysius Ag | Verfahren und anlage zur zerkleinerung von mahlgut |
DE3926882A1 (de) * | 1989-08-16 | 1991-02-21 | Kloeckner Humboldt Deutz Ag | Kreislaufmahlanlage zur mahlung von sproedem gut |
US5129586A (en) * | 1990-11-26 | 1992-07-14 | Artemjev Vladimir K | Compound grinding apparatus |
JPH089016B2 (ja) * | 1991-05-14 | 1996-01-31 | 川崎重工業株式会社 | 竪型ローラミルによる粉砕装置および粉砕方法 |
DE4118657A1 (de) * | 1991-06-07 | 1992-12-10 | Hosokawa Mikropul Ges Fuer Mah | Einrichtung mit einer muehle und einem abschneider |
DE4320025A1 (de) * | 1993-06-17 | 1994-12-22 | Krupp Polysius Ag | Mahlanlage und Verfahren zum Mahlen und Sichten von sprödem Mahlgut |
FR2710554B1 (fr) * | 1993-09-28 | 1995-12-01 | Fcb | Procédé et installation pour le broyage de vieilles brasques et de produits similaires. |
DE10336801B4 (de) * | 2003-08-11 | 2015-02-12 | Thyssenkrupp Industrial Solutions Ag | Verfahren und Anlage zur Mahlung von Eisenerz bzw. Eisenerzkonzentrat |
AU2007214252A1 (en) * | 2006-02-07 | 2007-08-16 | Horizon Science Pty Ltd | Method for processing material to produce particles of a desired size |
RU2535886C2 (ru) | 2010-03-05 | 2014-12-20 | ЛЁШЕ ГмбХ, Германия | Способ обогащения шлаков, содержащих высококачественные стали, и шлаков, содержащих железо, для извлечения металлов |
DE102012107127B4 (de) | 2012-08-03 | 2017-08-17 | Thyssenkrupp Industrial Solutions Ag | Vertikalrollenmühle |
CN103721823B (zh) * | 2013-11-15 | 2015-04-29 | 中冶北方(大连)工程技术有限公司 | 自磨机顽石旁路破碎*** |
DE102016121926B4 (de) * | 2016-11-15 | 2019-12-24 | Neuman & Esser Process Technology Gmbh | Mühle |
EP3326720B1 (fr) * | 2016-11-23 | 2021-11-03 | Loesche GmbH | Procédé de préparation de matières premières minérales multiphases |
DE102017115994A1 (de) * | 2017-07-17 | 2019-01-17 | Thyssenkrupp Ag | Zweistufiger Mahlkreislauf und Verfahren zur Herstellung eines gemahlenen Produkts mittels einer zweistufigen Mahlung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3951347A (en) * | 1972-09-21 | 1976-04-20 | Polysius Ag | Apparatus for crushing material containing particles that are hard to pulverize |
SE410561B (sv) * | 1973-04-13 | 1979-10-22 | Boliden Ab | Anleggning for autogen eller semiautogen malning av styckeformigt material, serskilt malm |
DE2620461A1 (de) * | 1976-05-08 | 1977-11-24 | Kloeckner Humboldt Deutz Ag | Mahltrocknungsanlage |
DE2912635A1 (de) * | 1979-03-30 | 1980-10-09 | Peters Ag Claudius | Gasstrom-walzen- oder kugelringmuehle |
DE3202054A1 (de) * | 1982-01-23 | 1983-08-04 | Steag Ag, 4300 Essen | Kohlenmahlanlage mit griessruecklauf und abtrennung von pyrit und bergen |
DE8425837U1 (de) * | 1984-08-31 | 1984-11-22 | Krupp Polysius Ag, 4720 Beckum | Wälzmühle |
DE3520069A1 (de) * | 1985-06-04 | 1986-12-04 | Krupp Polysius Ag, 4720 Beckum | Verfahren und anlage zur zweistufigen zerkleinerung |
EP0220681B1 (fr) * | 1985-10-29 | 1991-05-29 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Installation pour fractionner et broyer des matériaux fragiles et mouillés |
DE3544798C2 (de) * | 1985-10-29 | 1995-04-20 | Kloeckner Humboldt Deutz Ag | Einrichtung zur Zerkleinerung und Mahlung und Trocknung (Mahltrocknung) von feuchtem Gut |
-
1987
- 1987-05-27 DE DE19873717976 patent/DE3717976A1/de not_active Withdrawn
-
1988
- 1988-05-03 EP EP88107072A patent/EP0292739B1/fr not_active Expired - Lifetime
- 1988-05-03 DE DE8888107072T patent/DE3861909D1/de not_active Expired - Fee Related
- 1988-05-03 ES ES88107072T patent/ES2021408B3/es not_active Expired - Lifetime
- 1988-05-06 US US07/191,049 patent/US4889289A/en not_active Expired - Fee Related
- 1988-05-11 CA CA000566506A patent/CA1301134C/fr not_active Expired - Fee Related
- 1988-05-18 ZA ZA883511A patent/ZA883511B/xx unknown
- 1988-05-25 DK DK286288A patent/DK286288A/da not_active Application Discontinuation
- 1988-05-25 BR BR8802553A patent/BR8802553A/pt not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11833520B2 (en) | 2018-06-08 | 2023-12-05 | Sms Group Gmbh | Dry preparation of kaolin in the production of HPA |
Also Published As
Publication number | Publication date |
---|---|
DE3717976A1 (de) | 1988-12-08 |
DK286288D0 (da) | 1988-05-25 |
DK286288A (da) | 1988-11-28 |
ZA883511B (en) | 1988-11-22 |
DE3861909D1 (de) | 1991-04-11 |
EP0292739A3 (en) | 1989-11-15 |
ES2021408B3 (es) | 1991-11-01 |
EP0292739A2 (fr) | 1988-11-30 |
BR8802553A (pt) | 1988-12-20 |
US4889289A (en) | 1989-12-26 |
CA1301134C (fr) | 1992-05-19 |
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