EP1753527A1 - Granulation a fente par rotation - Google Patents

Granulation a fente par rotation

Info

Publication number
EP1753527A1
EP1753527A1 EP05731671A EP05731671A EP1753527A1 EP 1753527 A1 EP1753527 A1 EP 1753527A1 EP 05731671 A EP05731671 A EP 05731671A EP 05731671 A EP05731671 A EP 05731671A EP 1753527 A1 EP1753527 A1 EP 1753527A1
Authority
EP
European Patent Office
Prior art keywords
mixing
granules
mixing tool
rotation
tool
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.)
Ceased
Application number
EP05731671A
Other languages
German (de)
English (en)
Inventor
Reinhard Mowka
Frank Sandfort
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.)
MOWKA, REINHARD
Original Assignee
Loedige Maschbau Geb GmbH
Mowka Reinhard
Gebrueder Loedige Maschinenbau GmbH
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.)
Filing date
Publication date
Application filed by Loedige Maschbau Geb GmbH, Mowka Reinhard, Gebrueder Loedige Maschinenbau GmbH filed Critical Loedige Maschbau Geb GmbH
Publication of EP1753527A1 publication Critical patent/EP1753527A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/10—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in stationary drums or troughs, provided with kneading or mixing appliances

Definitions

  • the present invention relates to a process for granule production.
  • Processes for producing granules are widely used in chemical engineering, for example for the preparation of the starting material for molding compositions or molded articles, in particular for brake linings and sealing elements.
  • the inventive method for the production of granules of fibrous, powdery and liquid components in a mixing container of a mixer provides that by rotating at least one mixing tool in the mixing container in a first direction of rotation a compaction effect on the components between the mixing tool and a wall portion of the mixing container is achieved .
  • the components, ie the raw materials for the granules, are usually dry substances such as powders and fibers as well as liquids.
  • the mixing container can be designed conventionally. Preferably, it is substantially cylindrically or conically shaped with a taper upwards. Furthermore, at least one mixing tool rotating, in particular arranged at the bottom of the mixing container mixing tool is provided.
  • the mixing tool is preferably, as in a conventional vertical mixer, driven by a motor via a vertically projecting into the mixing container shaft.
  • the compression effect according to the invention results in improved granule formation.
  • the production time for the granules is short compared to the prior art described above.
  • the granules have an advantageously rounded shape and size. Furthermore, the granules are comparatively dust-free and homogeneous.
  • the granules sieUi thus an improved starting material for moldings and in particular for brake pads and sealing elements.
  • the aforesaid advantages can be achieved by a method in which granules of fibrous, powdery and / or liquid components are produced in a mixing container of a mixer by moving parts of the components of rotating surfaces inclined towards the direction of rotation on a mixing tool in the direction of an adjacent wall section be promoted the mixing container.
  • the mixing tool has propeller-like wings with such surfaces through which the components are pushed by the surfaces in the direction of a proximal wall section or bottom section of the mixing container.
  • the single surface can be flat or curved.
  • a rounded bottom for example a rounded disc or a dished bottom
  • a flat bottom as has been shown by the blades of the mixing tool
  • they preferably have a shape which is adapted to the shape of the floor. In the case of a rounded bottom, the wings then extend substantially parallel to the floor and thus also run rounded
  • the granulation is essentially controlled by the parameters pressure, speed of the mixing tool and temperature. Depending on the starting materials or starting components used, it may be necessary, inter alia, that the result of the granulation can not be arbitrarily improved by increasing the pressure, for example by changing the geometry of the surface or mixing container, arranging the mixing tool and, above all, moving the mixing tool. Rather, it may then happen that mass adversely adheres to the wall of the mixing container. It is up to the skilled person, by varying pressure and temperature and optionally by an upstream dehumidification with associated increase in temperature of the starting components to find an optimal setting. If the parameters are suitably adjusted, the components separate from the wall of the mixing container and optimum granulation is achieved. The particular setting depends on the components that are used
  • a further embodiment of the method provides that the compaction effect is achieved by a mixing tool, which is adapted to the wall or bottom of the Mischbeffleitnisses lying substantially to the wall shape or bottom shape of a portion of the mixing container.
  • the distance of the mixing tool to the wall or bottom portion or the intermediate gap is thereby substantially constant.
  • the mixing tool then moves in a plane parallel to the wall section or floor section.
  • the mixing tool moves on a surface of revolution, which maintains a uniform distance to a curved wall section.
  • the bottom of the mixing container is spherically curved outward, ie rounded, and the mixing tool has correspondingly upwardly curved wings.
  • This uniform spacing achieves a particularly homogeneous granulation in comparison to the prior art mentioned above.
  • the distance can be optimized depending on the surface geometry and speed so that on the one hand the pressure generated to avoid the above-described adhesion is not too high and on the other hand, however, optimum granulation is achieved.
  • the components enter Binder added.
  • Binder added can be, for example, wax, liquid resin such as phenolic resin and its derivatives, liquid rubber, latex and dissolved thermoplastics such as polyvinyl alcohol. Due to the special properties of these components, the treatment in the mixing container results in frictional and / or thermal binding effect with the rest components. For example, a wax added as a binder melts due to the heat of movement or heat supplied from the outside, thus binding dust particles between the components to be granulated. It is thus achieved a particularly homogeneous granules and dust-free granules,
  • Another embodiment provides that the components to be mixed are heated.
  • heating loops are arranged around the mixing container.
  • the temperature setting can be carried out particularly simply and quickly and an optimum setting of the mixing parameters can be ensured.
  • the segregation of the granules produced is low.
  • the granules are therefore stable and have improved pressing properties.
  • the granules can be produced very quickly.
  • the batch time and thus the production costs are therefore correspondingly low.
  • the committee in the Fomnk ⁇ rpern produced from this is correspondingly low,
  • the granules are pressed into brake pads or sealing elements.
  • the direction of movement of the mixing tool is reversed sequentially.
  • the direction of movement opposite to the first direction of rotation is used to pull apart fibers and / or to mix components together before granulation, Fibrous components pile up like cotton.
  • the mixing tool preferably has additional wings to the wings, with which the compression effect is achieved. Wings are then arranged in several planes as viewed from the axis of rotation.
  • a second step further components are added to the mixing vessel, specifically liquid components.
  • the mixing vessel specifically liquid components.
  • the desired result can best be achieved by rotating the mixing tool opposite to the first direction of rotation, preferably at a reduced speed compared to the speed set during the first step.
  • the mixing tool also has the aforementioned additional wings, that is to say a total of a plurality of wings, which are arranged at different levels from the turning axis.
  • the additional wings are preferably differently shaped and arranged in several planes along the axis of rotation.
  • the edge 3 is arranged closer to the bottom of the container than the edge 4 by a corresponding inclination of the surfaces.
  • the temperature of the mixing vessel via the double wall. Suitable tempered liquids can be passed through them,
  • wings 5 Above the ground level arranged wings 5 more wings 7 are provided. These other wings support the production of the granules from the individual components.
  • FIG. 2 shows the sectional view of the sketched mixer from FIG. 1.
  • the direction of rotation of the mixing tool 6 in the container 1 is illustrated by means of the ring arrow on the axis 2, the pressure on the components and thus the compression effect is higher, the faster is rotated in the direction of the first direction of rotation. If the direction of rotation of the mixing tool is changed, the surfaces of the blades 5 facing the interior of the mixing container and lying between the edges 3 and 4 unfold a pushing action upward, ie in the direction of the components located above the mixing tool 5.
  • a distance of 5 - 25 mm has also proved to be useful, the angular position of the spoon-like ends of the bottom tool is 35 °. Further expedient angle settings can be 1 5 - 60 °.
  • Two other sword-shaped tools are placed on the axis of the mixing tool, the ends are shaped so that they push the product or the components in both directions down.
  • the rotational speed of the mixing tool during granulation was min "1 speeds of 200 at 600-400 -.
  • the mixing container has a double jacket over which a temperature of 5 - 95 0 C, preferably from 35 - 40 0 C was set,
  • the critical temperature is generally above 1 30 0 C.
  • the components to be granulated are introduced into the mixing container of the mixer, which has a circular diameter.
  • a first step the driers and in particular the fibers are added to this mixing container.
  • a second step in particular the liquid components are added. If the components have been mixed together, the direction of rotation of the mixing tool is changed and the production of the granules takes place in the context of this third step. The compaction effect is then achieved. If the granules have been produced, the direction of rotation is expediently changed a second time and the removal begins. It is advantageous to carry out the removal of the granules, if the mixing tool is not rotated in the first direction of rotation. This avoids that continued compression worsens the result again. If the tool is rotated in the opposite direction to the first direction of rotation, this makes removal easier. Further details in the production are shown in the following table,
  • the direction of rotation "left" corresponds to the first direction of rotation. After only 4.5 minutes, the desired granules were of high quality.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Glanulating (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

L'invention concerne un procédé pour produire des granulés. De tels procédés sont diversement mis en oeuvre dans le génie chimique, par exemple pour produire la matière de départ pour des corps moulés, notamment pour des garnitures de frein et des éléments d'étanchéité. Selon le procédé de l'invention pour la production de granulés à partir de constituants fibreux, pulvérulents et liquides dans une cuve de mélange d'un mélangeur, on obtient, par rotation d'au moins un outil mélangeur dans la cuve de mélange dans un premier sens de rotation, un effet de densification sur les constituants entre l'outil mélangeur et une section de paroi de la cuve de mélange. A cet effet, l'outil mélangeur présente des surfaces obliques appropriées qui repoussent les constituants se trouvant dans la cuve de mélange en direction d'une section de paroi. L'effet de densification selon l'invention améliore la formation des granulés. Le mélangeur utilisé peut être un mélangeur vertical traditionnel. Les granulés ont une forme et une taille avantageusement arrondie, par exemple la taille d'une tête d'allumette. En outre, les granulés sont comparativement exempts de poussières et homogènes et constituent ainsi un produit de départ amélioré, par exemple pour des corps moulés, et notamment pour des garnitures de frein et des éléments d'étanchéité.
EP05731671A 2004-06-03 2005-03-14 Granulation a fente par rotation Ceased EP1753527A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004027239A DE102004027239A1 (de) 2004-06-03 2004-06-03 Rotationsspaltgranulation
PCT/EP2005/051125 WO2005118123A1 (fr) 2004-06-03 2005-03-14 Granulation a fente par rotation

Publications (1)

Publication Number Publication Date
EP1753527A1 true EP1753527A1 (fr) 2007-02-21

Family

ID=34963377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05731671A Ceased EP1753527A1 (fr) 2004-06-03 2005-03-14 Granulation a fente par rotation

Country Status (6)

Country Link
US (1) US20080259724A1 (fr)
EP (1) EP1753527A1 (fr)
JP (1) JP2008501497A (fr)
CA (1) CA2569278A1 (fr)
DE (1) DE102004027239A1 (fr)
WO (1) WO2005118123A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103946177A (zh) * 2011-11-07 2014-07-23 帝人芳纶有限公司 包含芳族聚酰胺浆和填充材料的团粒

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2266936B1 (fr) * 2009-06-25 2013-04-03 Hauert HBG Dünger AG Pièce de formage pour engrais et son procédé de fabrication
JP5981576B2 (ja) * 2014-12-26 2016-08-31 森永製菓株式会社 混練方法および混練装置
CN110202711B (zh) * 2019-06-28 2021-04-16 重庆瑞霆塑胶有限公司 进料用分料机构
CN112478477B (zh) * 2020-12-10 2022-12-16 徐州兴豪纺织新材料有限公司 一种无纺布生产用投料设备

Citations (2)

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GB2230709A (en) * 1989-04-14 1990-10-31 Tweedy Of Burnley Ltd Farinaceous mixer
WO2001037662A1 (fr) 1999-11-25 2001-05-31 Dct Aps Composition pour l'impregnation de tissus et de nappes de filet

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US2835452A (en) * 1954-06-28 1958-05-20 Du Pont Process for granulating urea-formaldehyde fertilizer compositions
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Publication number Priority date Publication date Assignee Title
GB2230709A (en) * 1989-04-14 1990-10-31 Tweedy Of Burnley Ltd Farinaceous mixer
WO2001037662A1 (fr) 1999-11-25 2001-05-31 Dct Aps Composition pour l'impregnation de tissus et de nappes de filet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2005118123A1

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103946177A (zh) * 2011-11-07 2014-07-23 帝人芳纶有限公司 包含芳族聚酰胺浆和填充材料的团粒

Also Published As

Publication number Publication date
CA2569278A1 (fr) 2005-12-15
WO2005118123A1 (fr) 2005-12-15
JP2008501497A (ja) 2008-01-24
US20080259724A1 (en) 2008-10-23
DE102004027239A1 (de) 2005-12-22

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