EP3603811A1 - Procédé et installation de broyage - Google Patents

Procédé et installation de broyage Download PDF

Info

Publication number: EP3603811A1
Authority: EP; European Patent Office
Prior art keywords: comminution; rotors; housing; elements; channels
Prior art date: 2018-08-01
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

EP19189504.4A

Other languages

German (de)

English (en)

Other versions

EP3603811B1 (fr

Inventor

Elena Vladimirovna Artemieva

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.)

Finegri Uab

Original Assignee

Individual

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.)

2018-08-01

Filing date

2019-08-01

Publication date

2020-02-05

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=67514456&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3603811(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2019-08-01 Application filed by Individual filed Critical Individual

2019-08-01 Priority to EP22201926.7A priority Critical patent/EP4186596A1/fr

2020-02-05 Publication of EP3603811A1 publication Critical patent/EP3603811A1/fr

2022-11-02 Application granted granted Critical

2022-11-02 Publication of EP3603811B1 publication Critical patent/EP3603811B1/fr

Status Active legal-status Critical Current

2039-08-01 Anticipated expiration legal-status Critical

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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/20—Disintegrating by mills having rotary beater elements ; Hammer mills with two or more co-operating rotors
- B02C13/205—Disintegrating by mills having rotary beater elements ; Hammer mills with two or more co-operating rotors arranged concentrically
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/22—Disintegrating by mills having rotary beater elements ; Hammer mills with intermeshing pins ; Pin Disk Mills
- B02C13/24—Disintegrating by mills having rotary beater elements ; Hammer mills with intermeshing pins ; Pin Disk Mills arranged around a vertical axis
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills

Definitions

the invention relates to the field of very fine comminution of solid materials, which can be of different origins and compositions and of different degrees of strength. It can be used in particular for processing minerals and solid fossil raw materials of all kinds in the construction, mining and smelting industries, in the chemical industry and in other industries as well as in the production of high-quality cements, concentrate, flour and finely ground multi-component mixtures from minerals and powders be used.
the invention is implemented in the form of a new method and a special device in which the method is implemented.
the material flows become one in the channels Subject to centrifugal force and the more or less coarse or fine particles of the material flow meet crushing elements on their way to the periphery of the rotors, which are mounted in a ring on the rotors rotating in opposite directions.
the material flows between the collisions with the shredding elements are accelerated on their way to the periphery of the rotors.
the cross-section (the peripheral contour) of the channels between the shredding elements has a closed shape, ie the channel sections rotating with the counter-rotating rotors have walls (are covered) on all sides.
the comminution takes place essentially due to the impacts which act on the material to be comminuted on its way to the periphery of the rotors when it hits the comminution elements.
the shredded material is discharged from the individual channels between the shredding elements of the outermost ring directly into the casing of the shredding device and discharged from the casing via an outlet opening.
a shredder which comprises the following components: a housing with an axial inlet and a tangential outlet opening and a substantially cylindrical annular shredding chamber; in the latter two horizontally and coaxially arranged rotors are mounted; these rotors can rotate in the opposite direction and are provided on the inside, ie on the rotor surface facing the other rotor, with annularly arranged comminution elements, between which channel sections run, which ensure the centrifugal effect; the channels running between the comminution elements of the rotors have a cross section with a closed contour.
Figure 1 the vertical partial section represented by an overall view of a comminution device according to the invention, and in Figure 2 a section in the plane AA according to Figure 1 shown.
the comminution method disclosed herein serves to achieve the above-mentioned object, in which two different comminution principles are combined in one system or device.
the material to be shredded is first - essentially as in the prior art - in the form of a two-phase medium (mixture of the material and gas; suspension of the material in a gas phase) in partial flows through radial channels of two counter-rotating grinding elements (rotors) from the axis the shredder led away to its periphery.
the respective material flow collides in succession with shredding elements that are mounted on the rotors rotating in the opposite direction.
the material flows are accelerated in the channels on the rotors in the radial direction.
the channel cross-section (the channel wall) has the shape of a closed contour.
the comminution in the process according to the invention occurs not only through numerous collisions between the material flows and comminution elements accelerated in the centrifugal direction, but also through multiple collisions between the particles of the gas and material mixture in an outermost ring zone of the rotors into which the various material flows emerge from the channels , in particular in aerodynamic vortices which are reinforced in the peripheral area of the rotors by additional cavities (blind holes, blind holes) which are provided in the peripheral zone of the rotors.
a further size reduction takes place in an outer ring area (circumferential gap) between the rotors and the housing.
this ring area there are additional impact plates with a variable shape and adjustable angle of inclination.
This enables an aerodynamic disturbing effect when the particles collide at high frequency, whereby the type, size and force of the particles change.
the concentration of the two-phase medium (mixture of gas and material flow) in the housing can be changed with the aid of air suction devices (deaerators) mounted on the housing of the shredder. This increases the shredding performance in the final stage before the finished material is removed from the shredder.
the shredding (when the particles break) within the housing of the shredding device the state energy (potential energy) of the elastic change in shape of the particles (solid fracture mechanics) is converted into thermal energy. Accordingly, there is the possibility not only to shred the material, but also to dry it at the same time (if it is too moist).
the crushing process presented makes it possible to combine two different crushing methods, to gradually change, adapt and combine different particle crushing and breaking methods in one system.
the shredding process is changed by changing the shape of the shredding elements and changing from the aerodynamic method to the mechanical and vice versa. Accordingly, two different shredding techniques are used in the same plant.
the material to be shredded can be supplied in various ways: either in the free flow of material, possibly supported by suction of the material through the inlet opening by means of negative pressure generation in the housing, or inevitably by means of feed devices of various types (feed conveyors).
the material to be shredded is accelerated by centrifugal forces as the rotors rotate from the rotor axis to the periphery.
the first size reduction takes place in the ring area of the system disclosed here, which is located near the vertical axis of the rotors or the axial inlet opening. In this area the particles become brittle when they collide with the shredding elements moving in opposite directions on circular paths.
a further size reduction takes place with the help of a number of size reduction elements (impact plates) in the event of collisions at high speed in the ring area which is somewhat further away from the rotor axis. In relation to the previous shredding zone, it can be referred to as the outer area.
the impact plates of different sizes and configurations are mounted on the ring inserts on the facing surfaces of the upper and lower rotor.
ring areas which can also be referred to as areas located further out in relation to the preceding zones, numerous material-carrying air flows from the channels of the rotors collide, which causes additional comminution. If the shredding is to be continued, a further ring area can be set up. This area can again be referred to as the outer area, based on the previous zones. In this area, the shredding takes place in aerodynamic vortices that arise in cylindrical cavities or depressions. These cavities are located in the outer ring areas of the rotors, in which there are no more channels.
a further comminution takes place with additional comminution elements which are located directly inside the chamber, on the wall thereof and in an area between the edges of the rotors and the wall.
These crushing elements represent impact plates, the shape and angle of which can be changed depending on the material strength.
the impact plates can be arranged one above the other in a row or in several rows.
devices for removing air from the rotor surfaces are installed on the housing in order to change the concentration of the material in the two-phase medium (the material to be ground) as required. This leads to a more efficient shredding in the additional outermost ring area.
the state energy (potential energy) of the elastic shape change (solid fracture mechanics) is converted into thermal energy during the comminution within the comminutor housing. Accordingly, there is the possibility not only to shred the material, but also to dry it at the same time (if it is too moist).
the ring areas can be combined in blocks and that the number of these blocks can be increased or reduced using different shredding methods.
a device which comprises the following components: a housing with an axial inlet opening, a tangential outlet opening and an annular, essentially cylindrical comminution chamber.
a housing with an axial inlet opening, a tangential outlet opening and an annular, essentially cylindrical comminution chamber.
two horizontally and coaxially arranged rotors are mounted.
the rotors can rotate in opposite directions and are provided on the inside, on the sides facing one another, with comminution elements arranged in a ring, which are mounted at an angle to the rotor body and between which channels with a closed cross-section are present.
the outer, channel-free ring areas of the rotors also have cavities (depressions, blind or blind holes) that form an additional comminution zone.
the additional shredding elements can also be conical and narrow, for example, in the direction of their free opening.
the additional crushing elements are thin plates, usually made from high-strength and non-brittle ceramic materials. Depending on the strength of the material to be shredded, its shape and configuration can vary.
Additional shredding elements are located within the shredder housing, namely between the inner wall of the housing (the shredding chamber) and the edges of the rotors. These are impact plates with a variable shape. When the material jet hits, the angle of inclination of these impact plates changes. This creates an aerodynamic disturbing effect on the material and creates an additional shredding zone.
Air extraction devices are also advantageously mounted on the housing of the shredder. Due to the more or less intensive removal of air from the surface (outside) of the rotors, the concentration of the material to be shredded in the two-phase medium in the housing can be changed. This enables more efficient Shredding in the additional ring zone between the inner wall of the housing and the edges of the rotors.
the shredding unit consists of a housing 1 with an axial inlet opening 2, a distributor (spreader G) attached underneath and a tangential outlet opening 3, as well as an annular housing region, which forms a shredding chamber 4, in the horizontally arranged and counter-rotating rotating rotors 5 and 6 are housed, on the facing rotor surfaces crushing elements 8, 9, 10, 16 and 17 are mounted in annular rows.
the rotors 5 and 6 have a common drive (which is not shown in the figure).
Channels run between the crushing elements 8, 9, 10, 16 and 17, the cross-section of which narrows in the radial direction from the axis to the periphery of the crushing chamber 4 by reducing the channel height.
a ring-shaped row of paddles 7 and channels 17 closest to the axis of the rotors 5 and 6 between these paddles belongs to the acceleration zone of the material to be shredded.
the upper and lower sides of the channels are formed by surfaces of the respective rotor and surfaces of a respectively assigned concentric ring 11, 12, 13, 14, 15 and 18, which each row of paddles 7 and shredding elements 8, 9, 10 and 16, 17 covered.
the rings 11, 12, 13, 14, 15, 18 are connected to the respective comminuting elements 8, 9, 10 and 16, 17 in a fixed and play-free manner and rotate together with them during operation of the system.
the rings 11 to 18 can be detachably mounted or manufactured as an integral part of the rotors 5 and 6. They can also be manufactured as a continuous or segmented ring. Each set of the segments covers a single channel between the paddles 7 and shredding elements. The side surfaces of the channels are from the front of each paddle 7 or Shredding element 8, 9, 10, 16, 17 and the back of the adjacent paddle or shredding element are formed.
Comminution elements in the form of conical depressions (cavities, blind holes) 21, 22 are located in at least one additional annular row on the surfaces of the rotors 5 and 6 facing each other.
Impact plates of variable shape are mounted on the inner wall of the housing of the comminution chamber as a further comminution unit.
the angle of inclination of these impact plates 23, 24, 25 to the inner wall of the comminution chamber can also be changed.
the shredding device works as follows: The feed of the starting material of a starting grain size takes place through free material flow or suction through a negative pressure in the housing via the inlet opening or through feed apparatuses of various types (feed conveyor). The material is fed into the acceleration zone of the upper rotor 5 of the shredder, where its particles move in the radial direction as it rotates along the surface of acceleration paddles 7. As soon as the particles have reached their maximum speed, they also have a certain take-off speed as well as a take-off angle and a free flight path (trajectory) into the brittle fracture zone (zone A). In this zone, the particles collide with the crushing elements 8 running towards them, which leads to brittle fracture.
the particle mass then consists of individual fragments, the microhardness of which exceeds that of the initial particles.
the fragments along the comminuting element 8 are accelerated in this zone by rotating the rotor. As soon as the required speed is reached, they collide with the crushing elements 9 of the next rotor element, which in turn increases the material surface.
the particles then move in a radial direction into the zone of force acting on the entire particle surface (zone B).
This zone no longer contains any crushing elements, but contains a number of aerodynamic devices in the form of cavities (depressions, blind holes) 21, 22.
the crushing method is changed in these.
the particles of the already partially shredded material from the different channels collide at a high speed and a high frequency in the outermost annular gap between the counter-rotating rotors. This happens due to an aerodynamic disturbance effect and the resulting aerodynamic vortex.
the size, mass and specific surface area of the particles now differ significantly from the characteristics of the starting material in zone A.
a zone C in which the particles of the material flows collide with each other and impact plates, is still further away from the vertical axis of the rotating rotors.
the peripheral speed of the rotor disks and the material on them is even higher in this zone.
the changed rotor configuration in this zone enables a collision of a large number of air streams with maximum concentration of solid particles from the channels of the upper and lower rotor. Particle size reduction is achieved by colliding the material, similar to jet mills, but at incomparably higher speeds with minimal energy costs.
Air extraction devices are also attached to the housing of the shredder (not shown in the drawings).
the concentration of the two-phase medium of the material to be shredded in the housing can be changed by an air discharge from the outer rotor surface. This enables more efficient shredding in an additional ring area between the inner wall of the shredding chamber and the edges of the rotors.
the shredded material is removed for suction.
the shredding device comprises the following components: a housing with an axial inlet opening, a tangential outlet opening and an annular, essentially cylindrical shredding chamber. In the latter, two horizontally and coaxially arranged rotors are mounted. These rotors can rotate in opposite directions and are provided with annularly arranged shredding elements on their mutually facing surfaces. Channels with a closed cross-section run between these shredding elements mounted at an angle to the rotor body.
the ring areas of the rotors also include cavities or depressions which form an additional comminution zone.
Impact plates are preferably also installed inside the housing, between the inner wall and the edges of the rotors. When the material jet impacts, the angle of these impact plates changes, which form an additional comminution zone.
the impact plates can be arranged one above the other in a row or in several rows.
Air extraction devices are preferably also mounted on the housing of the shredder. By taking air The concentration of the material to be shredded in the two-phase medium can be changed from the surface of the rotors. This enables more efficient shredding in an additional ring zone between the inner wall of the shredding chamber and the edges of the rotors.

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Engineering & Computer Science (AREA)
Food Science & Technology (AREA)
Crushing And Pulverization Processes (AREA)

EP19189504.4A 2018-08-01 2019-08-01 Procédé et installation de broyage Active EP3603811B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
EP22201926.7A EP4186596A1 (fr)	2018-08-01	2019-08-01	Procédé et installation de broyage

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102018212830.8A DE102018212830B3 (de)	2018-08-01	2018-08-01	Zerkleinerungsverfahren und -anlage

Related Child Applications (1)

Application Number	Title	Priority Date	Filing Date
EP22201926.7A Division EP4186596A1 (fr)	2018-08-01	2019-08-01	Procédé et installation de broyage

Publications (2)

Publication Number	Publication Date
EP3603811A1 true EP3603811A1 (fr)	2020-02-05
EP3603811B1 EP3603811B1 (fr)	2022-11-02

Family

ID=67514456

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
EP19189504.4A Active EP3603811B1 (fr)	2018-08-01	2019-08-01	Procédé et installation de broyage
EP22201926.7A Pending EP4186596A1 (fr)	2018-08-01	2019-08-01	Procédé et installation de broyage

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
EP22201926.7A Pending EP4186596A1 (fr)	2018-08-01	2019-08-01	Procédé et installation de broyage

Country Status (3)

Country	Link
EP (2)	EP3603811B1 (fr)
DE (1)	DE102018212830B3 (fr)
LT (1)	LT3603811T (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AU2021235800B2 (en) *	2020-03-12	2024-06-13	Tritana Intellectual Property Ltd.	Weed seed destruction
DE102020204780A1 (de)	2020-04-15	2021-10-21	Elena Vladimirovna Artemieva	Vorrichtung und Verfahren zum Zerkleinern von festen Materialien

Citations (5)

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Publication number	Priority date	Publication date	Assignee	Title
WO1995015818A1 (fr)	1993-12-06	1995-06-15	Artemieva, Elena Vladimirovna	Procede de pulverisation de matieres polydispersionnelles solides
WO1999051352A1 (fr)	1998-04-03	1999-10-14	Kontyaev Alexei Vyacheslavovic	Procede et dispositif de broyage de materiaux
WO2000010709A1 (fr) *	1998-08-25	2000-03-02	Brown Charles Kepler Jr	Desintegrateur a deux etages et procede de reduction de particules surdimensionnees
RU2166367C1 (ru)	2000-10-17	2001-05-10	Артемьева Елена Владимировна	Способ и устройство для измельчения материалов
DE202011106419U1 (de)	2010-12-15	2012-01-10	Elena Vladimirovna Artemieva	Anlage zum Mahlen von Materialien

Family Cites Families (2)

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DE4337998A1 (de) *	1993-11-06	1995-05-11	Escher Wyss Gmbh	Mahlmaschine und Mahlwerkzeug zum Mahlen von suspendiertem Faserstoffmaterial
JP5807919B2 (ja)	2013-07-31	2015-11-10	大学共同利用機関法人自然科学研究機構	糖尿病による代謝異常を改善するための組成物

2018
- 2018-08-01 DE DE102018212830.8A patent/DE102018212830B3/de not_active Withdrawn - After Issue
2019
- 2019-08-01 EP EP19189504.4A patent/EP3603811B1/fr active Active
- 2019-08-01 LT LTEP19189504.4T patent/LT3603811T/lt unknown
- 2019-08-01 EP EP22201926.7A patent/EP4186596A1/fr active Pending

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1995015818A1 (fr)	1993-12-06	1995-06-15	Artemieva, Elena Vladimirovna	Procede de pulverisation de matieres polydispersionnelles solides
RU2070094C1 (ru)	1993-12-06	1996-12-10	Артемьева Елена Владимировна	Способ сверхтонкого измельчения материалов
WO1999051352A1 (fr)	1998-04-03	1999-10-14	Kontyaev Alexei Vyacheslavovic	Procede et dispositif de broyage de materiaux
WO2000010709A1 (fr) *	1998-08-25	2000-03-02	Brown Charles Kepler Jr	Desintegrateur a deux etages et procede de reduction de particules surdimensionnees
RU2166367C1 (ru)	2000-10-17	2001-05-10	Артемьева Елена Владимировна	Способ и устройство для измельчения материалов
DE202011106419U1 (de)	2010-12-15	2012-01-10	Elena Vladimirovna Artemieva	Anlage zum Mahlen von Materialien

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Title
A. A. GRIFFITH: "The phenomenon of rupture and flow in solids, Philosophical Transactions of the Royal Society A: Mathematical", PHYSICAL AND ENGINEERING SCIENCES, vol. 221, 1921, pages 582 - 593

Also Published As

Publication number	Publication date
LT3603811T (lt)	2023-02-10
EP4186596A1 (fr)	2023-05-31
EP3603811B1 (fr)	2022-11-02
DE102018212830B3 (de)	2020-01-23

Publication	Publication Date	Title
EP2851122B1 (fr)	2015-10-14	Dispositif de concassage
DE4447321C2 (de)	1999-07-22	Rührwerksmühle für die nasse Feinzerkleinerung, mit Separator zur Zurückhaltung von Mahlperlen
EP2785472B1 (fr)	2016-07-20	Dispositif pour separer des produits granuleux
DE69813201T2 (de)	2004-03-25	Kontrollierte zerkleinerung von stoffen in einer wirbelkammer
EP2637790B1 (fr)	2014-05-07	Procédé de broyage et broyeur
DE69704875T2 (de)	2001-10-04	Zerkleinerungsvorrichtung und verfahren
DE102012104031B4 (de)	2017-05-04	Trennvorrichtung für Materialkonglomerate
DE2616155A1 (de)	1977-10-27	Nassmahlvorrichtung
EP2529835A2 (fr)	2012-12-05	Dispositif destiné à la séparation mécanique de conglomérats de matière à partir de matières de différentes épaisseurs et/ou consistances
EP2351616A1 (fr)	2011-08-03	Dispositif de traitement de poudre avec brassage du milieu
AT390455B (de)	1990-05-10	Vorrichtung zum zerkleinern von fasermaterial
EP2762233B1 (fr)	2018-03-07	Procédé et dispositif de broyage de minerai
EP3603811B1 (fr)	2022-11-02	Procédé et installation de broyage
EP3895806A1 (fr)	2021-10-20	Dispositif et procédé de broyage de matières solides
EP0764470B1 (fr)	2000-07-05	Procédé pour mouture à percussion et broyeur à choc
EP3849714B1 (fr)	2023-08-23	Roue de triage à éléments de voile plats et procédé de tamisage avec une telle roue
DE3729317C2 (fr)	1993-06-03
DE902708C (de)	1954-07-26	Maschine zur Herstellung von feinstzerteilten Mischungen, Dispersionen oder Emulsionen
EP2548648B1 (fr)	2014-10-08	Broyeur pour le broyage de matière
DE4431534B4 (de)	2006-12-28	Maschine zur Einwirkung auf zerkleinerbares und klassierbares Rohgut, sowie Verfahren zum Betrieb der Maschine
EP0692309A1 (fr)	1996-01-17	Procédé pour mouture à percussion et broyeur à choc
DE10018005A1 (de)	2000-11-09	Verfahren und Vorrichtung zum Pulverisieren von spanartigem Material
EP3738673B1 (fr)	2024-07-31	Dispositif de rectification destiné à l'arrondissement des particules
DE2153236A1 (de)	1973-05-10	Muehle
DE3602786A1 (de)	1987-08-06	Desintegrator-sichteinrichtung

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