EP1485246A1 - Extruder for pelletization machines, pelletization machine providing said extruder and process for producing pellets - Google Patents
Extruder for pelletization machines, pelletization machine providing said extruder and process for producing pelletsInfo
- Publication number
- EP1485246A1 EP1485246A1 EP03706897A EP03706897A EP1485246A1 EP 1485246 A1 EP1485246 A1 EP 1485246A1 EP 03706897 A EP03706897 A EP 03706897A EP 03706897 A EP03706897 A EP 03706897A EP 1485246 A1 EP1485246 A1 EP 1485246A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pellettization
- extruder
- machine
- holes
- pellets
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/22—Extrusion presses; Dies therefor
- B30B11/228—Extrusion presses; Dies therefor using pressing means, e.g. rollers moving over a perforated die plate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
- B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
- B30B11/202—Ring constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/22—Extrusion presses; Dies therefor
- B30B11/221—Extrusion presses; Dies therefor extrusion dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/22—Extrusion presses; Dies therefor
- B30B11/28—Extrusion presses; Dies therefor using perforated rollers or discs
Definitions
- the present invention concerns to an improved extruder for pellettization machines, pellettization machine providing said extruder and process for producing pellets.
- the invention refers to the technical field of treatment of high humidity content incoherent materials to obtain 0 dehydrated material in a compact pellet shape.
- the invention is applicable in the humid biomass production field.
- pellettization machines are known, said machines being realised according to different processes, all employing 0 an extruder, each time shaped according to the needing.
- pellettization machines are known, provided with at least a linear extruder, horizontally oriented, on which one or more rolls slide to compress the material, said material consequently exiting from the bottom through the extruder holes; they are also 5 known other pellettization machines the extruder of which has a cylindrical shape within which one or more rolls rotate, said roll, by the compression, oblige the material to exit through the extruder holes; finally, pellettization machines are known, wherein two cylindrical extruders are horizontally placed side by side, very close each other 0 and rotating according to opposite directions, in such a way that in the zone between the same a downward rotative motion is created, the material to be treated being introduced above this zone and being subjected to a compression, and partially passing through the holes of the cylindrical extruders to create the pellets, in a minimal part through 5 the space between the same extruders, to obtain waste product.
- all the extruders used in the various pellettization machines provide a plurality of holes, all having the same shape and dimensions, providing, each one, a first inlet section (not necessarily provided), an operation or pellettization section, having the necessary length, and an outlet section, having a cylindrical or flared shape.
- Main object of the present invention is therefore that of providing an improved extruder allowing to overcome the above mentioned drawbacks.
- the solution suggested according to the present invention allows obtaining a lowering of the extrusion temperature, and to increase the productivity of the same extruder, since the material sent back to the extruder is partially thickened.
- an extruder for pellettization machines characterised in that it provides at least two different kind of holes, respectively first holes having a working or pellettization zone of such length equal to the effective length necessary to the formation of pellets, once that the feeding material has the necessary humidity, and second holes having a length lower than said effective length, from second holes exiting partially or fully dehydrated, but not thickened incoherent material.
- said first and second holes provide an inlet zone to easy the entrance of the material, particularly an uniform section zone.
- said inlet section can have a section decreasing from the material inlet side toward the outlet side.
- said first and second holes provide a discharge or counter-perforation for the exit of the material, preferably an uniform section discharge, or a discharge having a crescent section from the material inlet side toward the outlet side.
- the invention further relates to a system for pellettization of incoherent material, said system providing a pellettization machine comprising an extruder as described in the above, and wherein, downward said pellettization machine, a sieve is provided, said sieve separating still incoherent material from pellets, recirculation means for the still incoherent material toward said pellettization machine, and means to transfer the pellets material toward the further working steps.
- said sieve is a vibrating sieve.
- said pellettization machine can be a linear, annular of opposed extruders pellettization machine.
- the invention further relates to a method for the production of pellets, by an extrusion system, said method comprising the following steps: - feeding the material to be subjected to treatment to the pellettization machine provided with an extruder as described in the above;
- humidity of the material to be subjected to treatment is reduced by mixing with material recirculated from the extruder, said recirculated material being already partially or totally dehydrated and having a lower humidity content.
- figure 1 is a schematic view of a pellettization system realised according to the invention
- figure 2 is a schematic view of a linear pellettization machine provided with extruder according to the invention
- figures 3a, 3b and 3c show, in section, three embodiments of the extruder according to the invention applied to the pellettization machine of figure 2
- figure 4 is a schematic view of an annular pellettization machine provided with extruder according to the invention
- figures 5a, 5b and 5c show, in section, three embodiments of the extruder according to the invention applied to the pellettization machine of figure 4
- figure 6 is a schematic view of an annular pellettization machine provided with extruder according to the invention
- figures 7a, 7b and 7c show, in section, three embodiments of the extruder according to the invention applied to the pellettization machine of figure 6
- figures 8 and 9 show, respectively
- System of figure 1 provides a material feeding system, from which the material is transferred to a crusher 2 and to a metal detector
- pellettization machine 6 From refiner 5, material is transferred to the pellettization machine 6, by a feeder 7.
- the pellettization machine can have every kind of features, even if in the following specific reference will be made to three kind of pellettization machine already available on the market.
- pellettization machines 6 particularly a linear pellettization machine 6' (figure 2), an annular pellettization machine 6" (figure 4) and an opposed extruder pellettization machine 6'" (figure 6) .
- Pellettization machine 6' of figure 2 provides a linear extruder 13, horizontally oriented, along which a roll 14 slides for compressing the material, that, consequently exits from the bottom through the extruder holes 1 3.
- Pellettization machine 6" of figure 4 provides a cylindrical extruder 1 5, within which two rolls 1 6 rotates, and that by compression, oblige the material to exit from the extruder holes 1 .
- pellettization machine 6' of figure 6 provides two cylindrical extruders 1 7, horizontally placed side by side and rotating according to opposite directions, in such a way that in the zone included between the same, a downward rotatory motion is created, the material to be subjected to treatment being introduced above this zone and being subjected to a compression and partially passing through the holes of the cylindrical extruders 17 to realise the pellets, and a minimal part of the same material passing through the space between the two extruders, to obtain waste material.
- holes of the extruders 13, 1 5 and 17 provide the innovative solution allowing to obtain the above mentioned advantages.
- extruder 1 3 has two different kind of alternated holes 1 8, a first kind 1 8' providing a working zone, corresponding to the real pellettization needing, and a second kind of holes 1 8" having a working zone with reduced sizes with respect to what is necessary to obtain a complete pellettization.
Abstract
The invention relates to an extruder (13, 15, 17) for pellettization machines, characterised in that it provides at least two different kind of holes, respectively first holes (18', 19', 20') having a working or pellettization zone of such length equal to the effective length necessary to the formation of pellets, once tha the feeding material has the necessary humidity, and second holes (18', 19', 20') having a length lower than said effective length, from second holes exiting partially or fully dehydrated, but not thickened incoherent material.
Description
EXTRUDER FOR PELLETIZATION MACHINES, PELLETIZATION MACHINE PROVIDING SAID EXTRUDER AND PROCESS FOR PRODUCING PELLETS
5 The present invention concerns to an improved extruder for pellettization machines, pellettization machine providing said extruder and process for producing pellets.
More generally, the invention refers to the technical field of treatment of high humidity content incoherent materials to obtain 0 dehydrated material in a compact pellet shape. The invention is applicable in the humid biomass production field.
As it is well known, this kind of technology developed during the last years, particularly for treatment of wastes and mud produced in municipal and industrial depuration systems and like, but 5 also in systems for packaging foodstuffs (particularly animal foodstuffs), in order to obtain a volume reduction, and at the same time to obtain a finished product with a set shape, i.e. pellets.
At present, pellettization machines are known, said machines being realised according to different processes, all employing 0 an extruder, each time shaped according to the needing.
Particularly, pellettization machines are known, provided with at least a linear extruder, horizontally oriented, on which one or more rolls slide to compress the material, said material consequently exiting from the bottom through the extruder holes; they are also 5 known other pellettization machines the extruder of which has a cylindrical shape within which one or more rolls rotate, said roll, by the compression, oblige the material to exit through the extruder holes; finally, pellettization machines are known, wherein two cylindrical extruders are horizontally placed side by side, very close each other 0 and rotating according to opposite directions, in such a way that in the zone between the same a downward rotative motion is created, the material to be treated being introduced above this zone and being subjected to a compression, and partially passing through the holes of the cylindrical extruders to create the pellets, in a minimal part through 5 the space between the same extruders, to obtain waste product.
At present, all the extruders used in the various pellettization machines provide a plurality of holes, all having the same shape and dimensions, providing, each one, a first inlet section (not necessarily
provided), an operation or pellettization section, having the necessary length, and an outlet section, having a cylindrical or flared shape.
Usual problems of all the pellettization machines employing extruders are essentially due to the high operative temperatures and to the high limitations on the fed material, with particular reference to its humidity, in order to be able to obtain a product having commercial features.
Main object of the present invention is therefore that of providing an improved extruder allowing to overcome the above mentioned drawbacks.
Further object of the present invention is that of providing an extruder that can be applied on every kind of pellettization machine presently known, and that will be surely also used on other kind of pellettization machines. Another object of the present invention is that of providing a solution of the above kind allowing to feed raw material to the pellettization machine having a humidity content higher than that presently allowed (1 0 - 1 5% in weight) to feed the raw material to the extruder. Still another object of the present invention is that of providing a solution allowing reducing the temperature reached within the extruder.
The solution suggested according to the present invention allows obtaining a lowering of the extrusion temperature, and to increase the productivity of the same extruder, since the material sent back to the extruder is partially thickened.
It is therefore specific object of the present invention an extruder for pellettization machines, characterised in that it provides at least two different kind of holes, respectively first holes having a working or pellettization zone of such length equal to the effective length necessary to the formation of pellets, once that the feeding material has the necessary humidity, and second holes having a length lower than said effective length, from second holes exiting partially or fully dehydrated, but not thickened incoherent material. Particularly, according to the invention, said first and second holes provide an inlet zone to easy the entrance of the material, particularly an uniform section zone.
Furthermore, according to the invention, said inlet section can have a section decreasing from the material inlet side toward the outlet side.
Always according to the invention, said first and second holes provide a discharge or counter-perforation for the exit of the material, preferably an uniform section discharge, or a discharge having a crescent section from the material inlet side toward the outlet side.
The invention further relates to a system for pellettization of incoherent material, said system providing a pellettization machine comprising an extruder as described in the above, and wherein, downward said pellettization machine, a sieve is provided, said sieve separating still incoherent material from pellets, recirculation means for the still incoherent material toward said pellettization machine, and means to transfer the pellets material toward the further working steps.
Preferably, according to the invention, said sieve is a vibrating sieve.
Particularly, according to the invention, said pellettization machine can be a linear, annular of opposed extruders pellettization machine.
The invention further relates to a method for the production of pellets, by an extrusion system, said method comprising the following steps: - feeding the material to be subjected to treatment to the pellettization machine provided with an extruder as described in the above;
- extruding the material through holes having different length; - sieving the product exiting from the extruder, dividing the dehydrated but still not sufficiently thickened material from the pellets;
- recirculating the dehydrated but still not sufficiently thickened material to the preceding extrusion step;
- reintegrating the recirculation material with new material to be subjected to treatment;
- sending the pellets obtained from the sieving step to the following working steps.
Preferably, before reaching the wished humidity conditions of the material sent to the extrusion step, all the extruded material is recirculated to the extruder and new material to be subjected to treatment is not fed. Furthermore, according to the invention, when the material sent to the extrusion has reached the wished humidity conditions, part of the extruded material is in any case recirculated toward the extrusion step.
Finally, according to the invention, humidity of the material to be subjected to treatment is reduced by mixing with material recirculated from the extruder, said recirculated material being already partially or totally dehydrated and having a lower humidity content.
The present invention will be now described, for illustrative but not limitative purposes, according to its preferred embodiments, with particular reference to the figures of the enclosed drawings, wherein: figure 1 is a schematic view of a pellettization system realised according to the invention; figure 2 is a schematic view of a linear pellettization machine provided with extruder according to the invention; figures 3a, 3b and 3c show, in section, three embodiments of the extruder according to the invention applied to the pellettization machine of figure 2; figure 4 is a schematic view of an annular pellettization machine provided with extruder according to the invention; figures 5a, 5b and 5c show, in section, three embodiments of the extruder according to the invention applied to the pellettization machine of figure 4; figure 6 is a schematic view of an annular pellettization machine provided with extruder according to the invention; figures 7a, 7b and 7c show, in section, three embodiments of the extruder according to the invention applied to the pellettization machine of figure 6; figures 8 and 9 show, respectively, a schematic view and two particulars of an annular pellettization machine according to the invention;
figures 1 0a, 10b and 1 0c show, respectively, a schematic view and two particulars of a refiner of a pellettization machine according to the invention; and figures 1 1 a, 1 1 b and 1 1 c show, respectively, a top, front and lateral view of the vibrating sieve of a pellettization machine according to the invention.
Making first reference to the figure 1 of the enclosed drawings, it is shown, for illustrative, but not limitative purposes, a pellettization system, that can be used to understand the operation and the advantages of the extruder according to the invention.
However, it must be understood that said system is simply illustrative of the invention, and that the same cannot be in any way used to limit the scope of the same invention, the inventive solution being applicable to every kind of pellettization machine. System of figure 1 provides a material feeding system, from which the material is transferred to a crusher 2 and to a metal detector
3. From this point, discharged material is sent outside (point 4 of figure 1 ), while the material to be pelletised is sent to a refiner 5, an embodiment of which is shown in figures 10a - 10c. Said refiner 5 is not a specific feature of the present invention, and thus it will be not described in further detail in the following.
From refiner 5, material is transferred to the pellettization machine 6, by a feeder 7. The pellettization machine can have every kind of features, even if in the following specific reference will be made to three kind of pellettization machine already available on the market.
From the pellettization machine 6, material, passed through an extruder according to the invention, and that will be described in greater detail with reference to the following figures, arrives to a sieve 8, an embodiment of which (vibrating sieve) is shown in figure 1 1 a -
1 1 c), said sieve net being necessary to be further described, since its features are not essential for the invention.
From the sieve 8, material properly pelletised is sent to the storing, conservation and discharge station 9, while incoherent material, by the cyclone 1 0, coupled to the aspirator 1 1 , and the hydraulic control 1 2, is sent back to the pellettization machine feeding system.
This recirculation, once the system works at regime, allows to feed material with a humidity content higher than it was possible with the known systems, since it mixes with recirculation material having a always lower humidity content. In figures 8 and 9, an embodiment of a pellettization machine according to the invention is shown, for illustrative, but not limitative purposes, in this specific case an annular pellettization machine.
Coming now to specifically describe the extruder according to the invention, reference will be made to figures 2 - 7.
Particularly, in figures 2, 4 and 6 three specific arrangement of pellettization machines are shown, particularly a linear pellettization machine 6' (figure 2), an annular pellettization machine 6" (figure 4) and an opposed extruder pellettization machine 6'" (figure 6) . Pellettization machine 6' of figure 2 provides a linear extruder 13, horizontally oriented, along which a roll 14 slides for compressing the material, that, consequently exits from the bottom through the extruder holes 1 3.
Pellettization machine 6" of figure 4 provides a cylindrical extruder 1 5, within which two rolls 1 6 rotates, and that by compression, oblige the material to exit from the extruder holes 1 .
Finally, pellettization machine 6'" of figure 6 provides two cylindrical extruders 1 7, horizontally placed side by side and rotating according to opposite directions, in such a way that in the zone included between the same, a downward rotatory motion is created, the material to be subjected to treatment being introduced above this zone and being subjected to a compression and partially passing through the holes of the cylindrical extruders 17 to realise the pellets, and a minimal part of the same material passing through the space between the two extruders, to obtain waste material.
In all the three cases, holes of the extruders 13, 1 5 and 17 provide the innovative solution allowing to obtain the above mentioned advantages.
In the following, the structure of the extruder 13 will be described, making reference to figures 3a - 3c, the structure of extruders 1 5 and 1 7, specifically shown in figures 5a - 5c and 7a -
7c, being similar, with the unique difference of the specific features necessary for the particular kind of pellettization machine.
Observing first figure 3a (and consequently figures 5a and 7a), it can be noted that extruder 1 3 has two different kind of alternated holes 1 8, a first kind 1 8' providing a working zone, corresponding to the real pellettization needing, and a second kind of holes 1 8" having a working zone with reduced sizes with respect to what is necessary to obtain a complete pellettization.
In this way, as exemplified in the figures, from the holes 1 8' incoherent material will exit, the sieve 8 sending the same back to the feeding system 7 of the pellettization machine, while from the holes 1 8", pellets will exit. In case of feeding of very humid material, it is also possible that, during the first operation phase of the system, not completely shaped material exits also from holes 1 8". In the embodiment of figures 3b, 5b and 7b, holes 1 9' and
19" have a circular exit section, while in figures 3a, 5a and 7c, the exit section is flared.
Finally, in the embodiment of the figures 3c, 5c and 7c, more evident is the difference between the working zone of holes 20' and of holes 20".
It is well evident the efficiency of an extruder according to the invention. Method providing the recirculation of part of the material solves at the same time the high operative temperature problem and that of the limitation of the features of the material to be subjected to treatment.
Particularly, providing passages through which a part of the material can pass easily through the extruder, an excessive compression is prevented, thus limiting the temperature increase during the extrusion step. Furthermore, recirculated material, after the sieving, being already partially or substantially dehydrated, mixes with the new material fed to the pellettization machine, consequently lowering the absolute humidity of the extruded material.
The present invention has been described for illustrative but not limitative purposes, according to its preferred embodiments, but it is to be understood that modifications and/or changes can be
introduced by those skilled in the art without departing from the relevant scope as defined in the enclosed claims.
Claims
1 . Extruder for pellettization machines, characterised in that it provides at least two different kind of holes, respectively first holes having a working or pellettization zone of such length equal to the effective length necessary to the formation of pellets, once that the feeding material has the necessary humidity, and second holes having a length lower than said effective length, from second holes exiting partially or fully dehydrated, but not thickened incoherent material.
2. Extruder for pellettization machines according to claim 1 , characterised in that said first and second holes provide an inlet zone to easy the entrance of the material.
3. Extruder for pellettization machines according to claim 2, characterised in that said inlet section has a uniform section zone.
4. Extruder for pellettization machines according to claim 2, characterised in that said inlet section has a. section decreasing from the material inlet side toward the outlet side.
5. Extruder for pellettization machines according to one of the claims 1 - 4, characterised in that said first and second holes provide a discharge or counter-perforation for the exit of the material.
6. Extruder for pellettization machines according to claim 5, characterised in that said discharge is a uniform section discharge.
7. Extruder for pellettization machines according to claim 5, characterised in that said discharge has a crescent section from the material inlet side toward the outlet side.
8. System for pellettization of incoherent material, characterised in that it provides a pellettization machine comprising an extruder according to one of the preceding claims 1 - 7, and wherein, downward said pellettization machine, a sieve is provided, said sieve separating still incoherent material from pellets, recirculation means for the still incoherent material toward said pellettization machine, and means to transfer the pellets material toward the further working steps.
9. System according to claim 8, characterised in that said sieve is a vibrating sieve.
10. System according to claim 8 or 9, characterised in that said pellettization machine is a linear pellettization machine.
1 1 . System according to claim 8 or 9, characterised in that said pellettization machine is an annular pellettization machine.
1 2. System according to claim 8 or 9, characterised in that said pellettization machine is a pellettization machine with opposed extruders.
1 3. Method for the production of pellets, by an extrusion system, said method being characterised in that it comprises the following steps:
- feeding the material to be subjected to treatment to the pellettization machine provided with an extruder as described in the above;
- extruding the material through holes having different length;
- sieving the product exiting from the extruder, dividing the dehydrated but still not sufficiently thickened material from the pellets;
- recirculating the dehydrated but still not sufficiently thickened material to the preceding extrusion step;
- reintegrating the recirculation material with new material to be subjected to treatment; - sending the pellets obtained from the sieving step to the following working steps.
14. Method according to claim 1 3, characterised in that, before reaching the wished humidity conditions of the material sent to the extrusion step, all the extruded material is recirculated to the extruder and new material to be subjected to treatment is not fed.
1 5. Method according to claim 1 3 or 14, characterised in that when the material sent to the extrusion has reached the wished humidity conditions, part of the extruded material is in any case recirculated toward the extrusion step.
1 6. Method according to one of the preceding claims 1 3 -
1 5, characterised in that humidity of the material to be subjected to treatment is reduced by mixing with material recirculated from the extruder, said recirculated material being already partially or totally dehydrated and having a lower humidity content.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2002RM000145A ITRM20020145A1 (en) | 2002-03-15 | 2002-03-15 | PERFECTED DRAWER FOR PELLETIZER MACHINES, PELLETIZER MACHINE THAT INCLUDES SUCH PERFECTED DRAWER AND METHOD FOR THE PRODUCTION |
ITRM20020145 | 2002-03-15 | ||
PCT/IT2003/000024 WO2003078151A1 (en) | 2002-03-15 | 2003-01-24 | Extruder for pelletization machines pelletization machines providing said extruder and process for producing pellets |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1485246A1 true EP1485246A1 (en) | 2004-12-15 |
Family
ID=11456189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03706897A Withdrawn EP1485246A1 (en) | 2002-03-15 | 2003-01-24 | Extruder for pelletization machines, pelletization machine providing said extruder and process for producing pellets |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1485246A1 (en) |
AR (1) | AR038968A1 (en) |
AU (1) | AU2003208603A1 (en) |
IT (1) | ITRM20020145A1 (en) |
SG (1) | SG104362A1 (en) |
WO (1) | WO2003078151A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108533773A (en) * | 2018-07-07 | 2018-09-14 | 河南省新大牧业股份有限公司 | A kind of material circulating resistance control valve and material dehydrating device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITRM20020145A1 (en) * | 2002-03-15 | 2003-09-15 | Fulvio Soldaini | PERFECTED DRAWER FOR PELLETIZER MACHINES, PELLETIZER MACHINE THAT INCLUDES SUCH PERFECTED DRAWER AND METHOD FOR THE PRODUCTION |
FR2931721A1 (en) * | 2008-06-03 | 2009-12-04 | Saveh Arash Honarkar | Extrusion rotary press for producing granule, has feeding units located towards external face of hollow cylinders, and granules evacuating unit located towards internal face of cylinders and evacuating material granules from internal face |
CN102672997B (en) * | 2012-04-28 | 2015-06-17 | 河南农业大学 | Flat mould net mould disc biomass molding machine |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2902949A (en) * | 1953-11-06 | 1959-09-08 | Edgar N Meakin | Means for extruding moldable material having viscous properties |
US3129458A (en) * | 1961-05-15 | 1964-04-21 | California Pellet Mill Co | Pellet mill die and method of forming same |
FR2059837A5 (en) * | 1970-06-25 | 1971-06-04 | Gondard Sa | Forming granulates from forage as cattle food |
US4211740A (en) * | 1975-06-26 | 1980-07-08 | Dean John J | Fuel pellets and process for producing fuel pellets from botanical materials |
DE2622265C2 (en) * | 1976-05-19 | 1977-10-27 | Projektierung Chem Verfahrenst | DEVICE FOR INTRODUCING GOODS INTO A TREATMENT ROOM OR DGL. |
DE2750414A1 (en) * | 1977-11-11 | 1979-05-17 | Projektierung Chem Verfahrenst | METHOD AND DEVICE FOR PRODUCING COCKS |
US4327050A (en) * | 1980-09-22 | 1982-04-27 | Phillips Petroleum Company | Extrusion and pelleting apparatus and method |
ATE54606T1 (en) * | 1985-05-09 | 1990-08-15 | Buehler Ag Geb | METHOD FOR PRODUCING A PELLETED FEED, AND APPARATUS FOR CARRYING OUT THE METHOD. |
CA2389516C (en) * | 1999-11-17 | 2009-10-27 | Alexanderwerk Ag | Compacting facility for bulk goods |
ITRM20020145A1 (en) * | 2002-03-15 | 2003-09-15 | Fulvio Soldaini | PERFECTED DRAWER FOR PELLETIZER MACHINES, PELLETIZER MACHINE THAT INCLUDES SUCH PERFECTED DRAWER AND METHOD FOR THE PRODUCTION |
-
2002
- 2002-03-15 IT IT2002RM000145A patent/ITRM20020145A1/en unknown
-
2003
- 2003-01-24 WO PCT/IT2003/000024 patent/WO2003078151A1/en not_active Application Discontinuation
- 2003-01-24 AU AU2003208603A patent/AU2003208603A1/en not_active Abandoned
- 2003-01-24 EP EP03706897A patent/EP1485246A1/en not_active Withdrawn
- 2003-03-12 SG SG200301180A patent/SG104362A1/en unknown
- 2003-03-13 AR ARP030100881A patent/AR038968A1/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO03078151A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108533773A (en) * | 2018-07-07 | 2018-09-14 | 河南省新大牧业股份有限公司 | A kind of material circulating resistance control valve and material dehydrating device |
CN108533773B (en) * | 2018-07-07 | 2023-11-03 | 河南省新大牧业股份有限公司 | Material circulation resistance adjusting valve and material dewatering device |
Also Published As
Publication number | Publication date |
---|---|
AU2003208603A1 (en) | 2003-09-29 |
AR038968A1 (en) | 2005-02-02 |
ITRM20020145A0 (en) | 2002-03-15 |
WO2003078151A1 (en) | 2003-09-25 |
SG104362A1 (en) | 2004-06-21 |
ITRM20020145A1 (en) | 2003-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0617050B1 (en) | Process and device for obtaining a foamed product or a foam, from non-modified starch | |
CN202237962U (en) | Biomass flat-die granulation machine | |
CN103721634B (en) | The quick comminutor of bimodulus | |
US4824352A (en) | Apparatus for pelletizing materials | |
CN101411971B (en) | Combination die powder molding type granulator | |
CN107376783A (en) | A kind of material forming process equipment | |
EP1485246A1 (en) | Extruder for pelletization machines, pelletization machine providing said extruder and process for producing pellets | |
CN102553493B (en) | Automatic control colliding granulator | |
CN108083602A (en) | The combination unit of dewatered sludge and its method of dewatered sludge | |
US3025565A (en) | Process and apparatus for granulating and forming plastic masses | |
CN215694617U (en) | Pig is prilling granulator for feed processing | |
CN104816401B (en) | The Granulation Equipments of paraffin and method | |
CN103948511A (en) | Medicated leaven granulator and granulating method thereof | |
CN206276347U (en) | Baking-free ceramicite rolling pelletizer | |
CN203710981U (en) | Rapid double-module granulating machine | |
EP1027836B1 (en) | Process and device for producing intermediate products and mixed fodder for animals | |
CN207574487U (en) | Efficient feed roller pressing type particle making machine | |
CN206909664U (en) | A kind of packaging system for a variety of granular size feeds | |
JP2739064B2 (en) | Manufacturing method and apparatus for processing raw material for compound feed | |
CN113649268A (en) | Dry screening system of pet food granule shaping | |
CN205337538U (en) | Novel granulated feed machine | |
CN210410614U (en) | Granulating equipment | |
CN202618235U (en) | High-gelatinization high-productivity granulating device | |
CN202438295U (en) | Automatic control collision granulating machine | |
CN216879209U (en) | Adjustable granulating device for medicine processing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
17P | Request for examination filed |
Effective date: 20041012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20060119 |