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WO1986004523A1 - Tambour d'agglomeration - Google Patents

Tambour d'agglomeration Download PDF

Info

Publication number
WO1986004523A1
WO1986004523A1 PCT/DE1986/000043 DE8600043W WO8604523A1 WO 1986004523 A1 WO1986004523 A1 WO 1986004523A1 DE 8600043 W DE8600043 W DE 8600043W WO 8604523 A1 WO8604523 A1 WO 8604523A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
drum according
agglomerates
filling opening
increase
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
PCT/DE1986/000043
Other languages
German (de)
English (en)
Inventor
Gerald Heinze
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.)
Dela Gesellschaft fur Granuliertechnik Mbh
Original Assignee
Dela Gesellschaft fur Granuliertechnik Mbh
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 Dela Gesellschaft fur Granuliertechnik Mbh filed Critical Dela Gesellschaft fur Granuliertechnik Mbh
Publication of WO1986004523A1 publication Critical patent/WO1986004523A1/fr
Anticipated expiration legal-status Critical
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
    • B01J2/12—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums

Definitions

  • the invention relates to a drum for agglomerating a finely divided material, which is rotatably mounted about its longitudinal axis and one end of which has a filling opening and the other end of which has a filling opening.
  • a finely dispersed substance is introduced into the filling opening and is usually attached to one another with the addition of a liquid to form agglomerates of different sizes.
  • the agglomerates formed in this way are very often dried in an oven before being transferred to a processing process.
  • drying the agglomerates the fact that they are of different sizes turns out to be particularly troublesome. While the small agglomerates dry quickly and may become overheated, the large agglomerates are not dried sufficiently. In addition, the small agglomerates collapse to form a narrow cluster, through which the warm air that forms in the furnace cannot pass with the necessary intensity.
  • plates have been used, among other things, in the interior of which the agglomeration takes place. Such plates are characterized in that they have a relatively short length and a relatively large diameter. Its longitudinal axis has a slope in the direction of the filling opening, from which the agglomerates fall out after they have been rolled in the rotating plate during a predetermined dwell time. Depending on the length of the dwell time, the agglomerates emerging from the filling opening have depending on the finely divided goods and the liquid added to the plate, more or less large dimensions.
  • Crucial for the further treatment of the agglomerates is the fact that, with the correct dosage, the agglomerates emerging from the filling opening are largely of the same size.
  • the metering of the finely divided material must be carried out very carefully so that agglomerates of the desired size emerge from the filling opening.
  • the agglomerates are either too big or too small.
  • the too large agglomerates very often have an undesirable moisture content for further processing, which can lead to the agglomerates being unsuitable for further treatment.
  • cones are used for agglomeration, which, like the plates, have a relatively short length. These cones also have a longitudinal axis that rises in the direction of the filling opening. With the help of these cones, agglomerates can be produced which have largely identical dimensions when they leave the cone. In this respect, both the cone and the plate each have a very good classification effect, which leads to the fact that the agglomerates are largely the same size with a largely correct dosage of the starting material and can therefore be processed further. Since both the plate and the cone are very sensitive to the starting material fed to them, the drum inclined towards its filling opening is used in many cases and it is accepted that this has a very poor classification effect.
  • the drum With a comparable drive power, the drum has a higher throughput than the plate on the one hand and the cone on the other.
  • a drum In order to prevent the agglomerates of different sizes from leading to the disadvantages already described, such a drum is followed by sieves, with the aid of which the agglomerates are sorted out according to their size.
  • the screening process requires additional investment and processing costs. Despite the relatively high throughput, the drum can therefore only be used economically in special cases.
  • the object of the present invention is therefore to improve the drum of the type mentioned in the introduction so that it can be used to achieve a good classification effect.
  • This object is achieved in that the longitudinal axis has an increase in the direction of the fill opening.
  • Such a drum arrangement ensures that agglomerates emerge from the filling opening which are largely of the same order of magnitude as one another. Due to its good classifying effect, it is suitable for delivering the agglomerates emerging from it so well sorted that they follow you processing can be fed without further sorting.
  • the drum has a large path along which the goods are transported from the filling opening to the filling opening. In this way, agglomerates are formed, the size of which can be selected as large or small as desired, depending on the pitch of the drum axis. The size of the desired agglomerates can thus be largely determined using the parameters specified by the drum.
  • the product leaving the drum is nowhere near as dependent on the dosage of the starting materials as the starting products produced by the cone on the one hand and the plate on the other. Despite its good classifying effect, the drum is therefore largely independent of dosage errors.
  • the increase is dependent and variable from the residence time. In this way, by choosing a more or less large increase in various starting products, consideration can be given to a large extent.
  • the increase is chosen so that agglomerates of a certain size leave the filling opening without significant undersize particles occurring. A separation of the agglomerates from the undersize is therefore unnecessary, so that it is also unnecessary to return the undersize to the filling opening of the drum.
  • a drum consists essentially of a drum body 1, a drive 2, a Eingellvor direction 3 and lifting device 4.
  • the drive 2 is connected in a suitable manner, for example by means of gear wheel 5 with the drive 2.
  • This gear drive 5 can consist, for example, of a toothed ring which is fastened on an outer surface 6 of the drum body 1 facing the drive 2.
  • a sprocket (not shown), which is driven by the drive 2, can engage in this ring gear.
  • the filling opening 3 can consist, for example, of a screw conveyor 7 and a liquid inlet 8. Both the screw conveyor 7 and the liquid inlet 8 open into a filling opening 9 which is formed on one of the two end faces of the cylindrical drum body 1.
  • the screw conveyor 7 can be connected via an inlet 10 to a storage container (not shown) in which there is a finely divided material 12 to be added to agglomerates 11. This slides through the inlet 10 in the direction of the screw conveyor 7, which, if desired, conveys a required amount of the finely divided material 12 into an interior space 13 enclosed by the drum body 1.
  • the drum body 1 is mounted with its longitudinal axis 14 obliquely with respect to a support 15 extending in the horizontal direction.
  • This inclined mounting presents itself as an increase in the drum body 1 from its fill opening 9 in the direction of a fill opening 16 opposite the fill opening 9.
  • the agglomerates 11 are conveyed out of the interior 13 from this fill opening 16.
  • the oblique position of the drum body 1 caused by the increase in the longitudinal axis 14 is carried out with the aid of the lifting device 4, which for this purpose engages in an area 17 adjacent to the filling opening 16 on an outer surface 6 of the drum body 1 facing it.
  • This lifting device 4 can be designed, for example, as a hydraulically driven lifting piston 19, the lifting cylinder 20 of which is supported on the support 15. Depending on the desired increase in the longitudinal axis 14, the lifting piston 19 is moved out of the lifting cylinder 2o to a greater or lesser extent.
  • a bearing 21 to be subjected to pressure can be provided between the reciprocating piston 19 and the outer surface 6.
  • the finely divided material 12 is introduced into the interior 13 of the drum body 1 after the drum body 1 has been set in rotary motion by the drive 2. Because of the rolling movements, the fine Distributed material 12 within the rotating drum body 1 executes agglomerates 11 form inside the interior 13. These agglomerates are formed by the accumulation of finely divided material 12 on so-called granulating seeds, which are located within the finely divided material 12. This finely divided material 12 collects at a deepest point 25 of the drum body 1 adjacent to the filling device 3. Larger and medium-sized agglomerates 26 lie on this finely distributed material 12 in the direction of the filling opening 16. Large agglomerates 11 lie on the larger and medium-sized agglomerates the surface of the filling, roll off there and finally reach the filling opening 16 from which they are discharged.
  • a liquid is added to it via the liquid inlet 8 when it enters the interior 13.
  • care must be taken to ensure that the large agglomerates 11 do not exceed a moisture content which is conducive to further processing.
  • the drum body usually has a diameter that is between 0.5 and 3 m.
  • the length of the drum body can be 8 to 10 m.
  • the degree of filling of the drum is at least 10%, but is usually between 2o and 3o%. It can be assumed that the increase is between 1 and 45, preferably 3 to 20 degrees.
  • the ratio of length to diameter of the drum is at least 1: 1, but will usually be larger.
  • a scraper 27 is fastened, which extends through the drum body 1 essentially parallel to the longitudinal axis 14 and maintains a predetermined distance 28 from an inner surface 29 of the drum body 1 delimiting the interior 13.
  • This distance 28 determines a layer thickness which forms on the inner surface 29 and with which the finely divided material 12 enriched with liquid rests on the inner surface 29.
  • the scraper 27 prevents the interior from overgrowing during the operation of the drum body 1.
  • a cutting edge 3o which is attached to the scraper 27, facilitates the separation of particles which, beyond the distance 28, adhere to the inner surface 29 adhering layer firmly
  • the drum body 1 can be closed on its end face opposite the filling opening 16.
  • the liquid supply on 8 can also be provided.
  • the drum rotates at a speed which is between 3 and 20 revolutions per minute and the selection of which depends on the diameter of the drum body 1. For example, depending on the material to be agglomerated and the amount and type of liquid added to it, a drum body with a length of 7 meters and a diameter of 1.5 m can have a speed of 10 revolutions per minute.
  • Agglomerates 11 occur in this drum 33 inclined towards the filling opening 33 undersize quantities which are between 2oo and 4oo%. In view of the resulting poor classification effect, the agglomerates emerging from this drum 33 must also be classified, for example by sieving.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Glanulating (AREA)
  • Paper (AREA)

Abstract

Un tambour (1) sert à l'agglomération d'un matériau finement divisé. Il est monté de façon rotative autour de son axe longitudinal. Un de ses côtés frontaux comprend un orifice de remplissage (3), et son autre côté frontal comprend un orifice d'évacuation (16). L'axe longitudinal du tambour monte dans le sens de l'orifice d'évacuation (16). Le degré d'inclinaison peut être variable en fonction du temps de séjour de l'aggloméré dans le tambour et s'éléver à au moins un degré, mais peut également se situer entre 1o et 45o ou entre 3o et 20o. Le rapport entre la longueur et le diamètre du tambour peut être d'au moins 1:1, mais sera en règle générale plus élevé.
PCT/DE1986/000043 1985-02-06 1986-02-06 Tambour d'agglomeration Ceased WO1986004523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3503947.7 1985-02-06
DE19853503947 DE3503947C2 (de) 1985-02-06 1985-02-06 Trommel zum Agglomerieren

Publications (1)

Publication Number Publication Date
WO1986004523A1 true WO1986004523A1 (fr) 1986-08-14

Family

ID=6261765

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1986/000043 Ceased WO1986004523A1 (fr) 1985-02-06 1986-02-06 Tambour d'agglomeration

Country Status (4)

Country Link
EP (1) EP0214189A1 (fr)
JP (1) JPS62502030A (fr)
DE (1) DE3503947C2 (fr)
WO (1) WO1986004523A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031276A1 (fr) * 1994-05-16 1995-11-23 Niro A/S Granulateur compacteur
CN115282869A (zh) * 2022-07-19 2022-11-04 苏州易合医药有限公司 一种用于连续制备球形颗粒簇团的旋转滚筒

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4008479A1 (de) * 1990-03-16 1991-09-19 Dela Granuliertechnik Vorrichtung zum agglomerieren von feindispersen stoffen
DE19727020A1 (de) * 1997-06-25 1999-01-07 Gertung Lutz Dipl Ing Trommel zum Agglomerieren
NO312712B1 (no) * 1999-12-15 2002-06-24 Norsk Hydro As En sorterende fluid bed granulator samt fremgangsmåte for fluid bed granulering
RU2189855C1 (ru) * 2001-02-19 2002-09-27 Всероссийский научно-исследовательский и проектно-технологический институт механизации животноводства Устройство для приготовления гранулированных органоминеральных удобрений

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH315573A (de) * 1952-12-16 1956-08-31 Lonza Werke Elektrochemische Verfahren zur Herstellung von Granulaten von homogener Beschaffenheit aus pulverförmigen Stoffen
DE977050C (de) * 1953-06-17 1965-01-07 Polysius Gmbh Schwenkbare Granuliertrommel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984860A (en) * 1959-11-24 1961-05-23 Koppers Co Inc Balling drum
DE1299598B (de) * 1965-11-26 1969-07-24 Budenheim Rud A Oetker Chemie Drehtrommel zur Herstellung gekoernter oder pulverfoermiger Feststoffe
DE2006503C3 (de) * 1970-02-13 1975-03-27 Otto Dipl.-Chem. Dr.-Ing. 6200 Wiesbaden Pfrengle Verfahren und Vorrichtungen zur kontinuierlichen Herstellung von Pulveragglomeraten
JPS505743A (fr) * 1973-05-21 1975-01-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH315573A (de) * 1952-12-16 1956-08-31 Lonza Werke Elektrochemische Verfahren zur Herstellung von Granulaten von homogener Beschaffenheit aus pulverförmigen Stoffen
DE977050C (de) * 1953-06-17 1965-01-07 Polysius Gmbh Schwenkbare Granuliertrommel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031276A1 (fr) * 1994-05-16 1995-11-23 Niro A/S Granulateur compacteur
CN115282869A (zh) * 2022-07-19 2022-11-04 苏州易合医药有限公司 一种用于连续制备球形颗粒簇团的旋转滚筒
CN115282869B (zh) * 2022-07-19 2023-11-17 苏州易合医药有限公司 一种用于连续制备球形颗粒簇团的旋转滚筒

Also Published As

Publication number Publication date
DE3503947C2 (de) 1987-02-19
DE3503947A1 (de) 1986-08-07
JPS62502030A (ja) 1987-08-13
EP0214189A1 (fr) 1987-03-18

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