EP4626663A1 - Verfahren und vorrichtung zur herstellung einer mischgutmasse für eine spanplatte - Google Patents
Verfahren und vorrichtung zur herstellung einer mischgutmasse für eine spanplatteInfo
- Publication number
- EP4626663A1 EP4626663A1 EP23814138.6A EP23814138A EP4626663A1 EP 4626663 A1 EP4626663 A1 EP 4626663A1 EP 23814138 A EP23814138 A EP 23814138A EP 4626663 A1 EP4626663 A1 EP 4626663A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixer
- wood chips
- continuously
- intermediate bunker
- conveyor belt
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
- B28B1/525—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing organic fibres, e.g. wood fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
- B28C5/402—Methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
- B28C5/404—Pre-treatment of fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/002—Mixing systems, i.e. flow charts or diagrams; Making slurries; Involving methodical aspects; Involving pretreatment of ingredients; Involving packaging
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
- E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
Definitions
- the invention relates to methods for producing a homogeneous mixed material mass intended for forming a mineral-bonded chipboard, according to the preamble of claim 1.
- the invention also relates to a corresponding device according to the preamble of claim 7.
- a chipboard can be used in particular as a so-called building board for producing flat construction units of a building.
- Cement is used in particular as the mineral binding agent.
- a cement chipboard can have several layers, e.g. an upper and a lower cover layer and a middle layer that has coarser chips than the two cover layers.
- DE 20 2010 004 204 U1 discloses a five-layer cement chipboard.
- the problem relating to the method is solved by the features of claim 1.
- the wood chips are continuously filled into a first mixing device, which is referred to below as a mixer.
- the wood chips are continuously mixed with water and at least one liquid setting accelerator and then again continuously discharged.
- the wood chips or the resulting mixture go into an intermediate bunker, in which they are continuously transported from an inlet to an outlet.
- the period for this transport is predetermined and thus represents a period of intermediate storage for the wood chips or the mixture. This period could be referred to as the mean or average period of intermediate storage.
- the wood chips are continuously transported into a second mixer.
- the wood chips or the mixture are continuously mixed with the mineral binder to form a homogeneous mixture, with the chips being coated with the binder.
- Cement is used as the mineral binder.
- the binder may also not be exclusively cement.
- the mixing quantities within the process steps mentioned, namely in the first mixer, in the intermediate bunker, between the intermediate bunker and the second mixer, and in the second mixer, are relatively small.
- the amount of mixing material already discharged from the second mixer, which is already on its way to a forming station, is also relatively small. Since there are regular stops during operation of a corresponding plant, typically two uncontrolled and eight controlled plant stops per month, the costs associated with the mixtures or mixing materials resulting from a plant stop can be kept relatively low compared to batch mixing.
- the material loss caused by plant stoppages can be up to 70% less in the process according to the invention than in the conventional, discontinuous process.
- the construction height of the system and consequently the construction height of a hall required for the system can be significantly lower when the process is implemented using a corresponding system compared to a batch mixing system.
- a binding agent storage bunker is not required, which means that around four meters of hall construction height can be saved.
- a batch mixing process requires a mix dosing bunker into which the finished wood chip mixture or mix mass is added before it is continuously and evenly conveyed to a forming station.
- such a mix dosing bunker is not required, which means that the hall construction height can be around two meters lower and the path of the mix mass from the mixer to the forming station is short, which makes the system easier to operate.
- a batch mixing process requires a chemical dosing station which is arranged directly under the roof of the hall, whereas the process according to the invention does not require such a dosing station.
- the invention does not require a high mixing tower. This is because the wood chips can be transported upwards on the way from the intermediate bunker to the second mixer, so that the intermediate bunker and the second mixer can be at the same height and the wood chips can be filled into the second mixer from above. This also contributes to keeping the height of a device used to carry out the process low.
- the invention allows the overall hall height to be reduced compared to the conventional discontinuous process. by seven to eight meters.
- the required hall area is smaller compared to a batch mixing process, since the continuous mixing operation can be arranged directly at the forming station.
- a high mixing tower cannot be positioned close to the forming station. Due to all of these advantageous conditions according to the invention, considerable hall space, for example around 17,000 m 3 , and thus heating energy costs can be saved compared to a batch mixing operation.
- the relatively small hall space naturally also means correspondingly lower construction and land costs.
- the maintenance of the two continuous mixers is less complex than the maintenance of a tall mixing tower.
- the invention also makes it possible to save on the costs of a steel structure for a tall mixing tower.
- the entire process for producing the homogeneous mixture is or runs continuously.
- the mixed material mass is transported from the second mixer to the forming station by means of two conveyor belts arranged one behind the other.
- the first conveyor belt as seen in the conveying direction, can be operated in a reversing manner, with a collecting container being arranged below an inlet end of this conveyor belt which receives the mixed material mass from the second mixer.
- This serves to transport material that has reached the first conveyor belt and may not be of sufficient quality or has become waste due to a plant stoppage into the collecting container.
- the residence time, or here and below also the equivalent average residence time, of the wood chips in the first mixer can in particular have a fixed value between 45 and 75 seconds.
- the first mixer is then a so-called intensive mixer.
- the at least one mineral binding agent can also be hard coal fly ash. Aluminium sulphate, sodium water glass, calcium chloride or polycarboxylate can be used as setting accelerators, each in liquid form.
- the device can be used to carry out the method according to claim 1.
- the device has a storage bunker for wood chips.
- a first chip free-fall scale is arranged below a discharge of the storage bunker.
- Below this chip free-fall scale is a chip inlet opening of a first mixer.
- This mixer is intended for the continuous mixing of the wood chips with the water and at least one liquid setting accelerator and thus has a water inlet and an inlet for the setting accelerator. Both inlets are each connected to a flow meter.
- the device also has an intermediate bunker which serves to receive and temporarily store the wood chips that leave the first mixer or the resulting wood chip mixture that leaves the first mixer.
- the device also has a conveyor which is designed in such a way that the wood chips or the wood chip mixture coming from the intermediate bunker outlet are continuously transported sideways and upwards.
- the conveyor can in particular be a conveyor belt or a trough chain conveyor.
- Below an outlet of the conveyor there is a second chip free-fall scale, and below this scale a second mixer is arranged in such a way that a chip inlet opening of the second Mixer is located below the scale.
- the second mixer is used for the continuous mixing of the wood chips or the existing wood chip mixture with the at least one mineral binder to form a homogeneous mixture.
- the binder is cement, although a further mineral binder can also be provided if necessary, such as hard coal fly ash.
- the device also has a binder container and a binder free-fall scale arranged underneath, which is arranged between a discharge of the binder container and a binder inlet opening of the second mixer.
- Fig. 3 is a partial view of a conventional apparatus for producing a cement particle board having two facing layers and a middle layer arranged therebetween.
- the flow meter 18b has a flow meter 18b for the aluminum sulfate and a flow meter 18c for the water.
- the flow meter 18b is connected via a line according to the arrows "B" to a preparation station 19b for the aluminum sulfate, which has water connections 20b and which can be filled with the required chemicals accordingly, as symbolically indicated at 21b.
- the mixer 33 has a rotating and inclined mixing container 34 and represents an intensive mixer.
- a binding agent container 36a is arranged, which has a discharge indicated by arrow 37a, from which the binding agent, which is cement, passes via a free-fall scale 38a into one of four inlet openings 39 of the mixer 33. It is intended that as an additional binding agent, hard coal fly ash from a further container 36b according to arrow 37b via a free-fall scale 38b and also pigments from a further container 36c according to arrow 37c via a free fall scale 38c into a further one of the entry openings 39.
- crushed seedlings from a seedling container 36d according to arrow 37d is fed via a further free-fall scale 38d into a further inlet opening 39 of the mixer 33.
- the crushed seedlings are fed to a filter 40 according to arrow 41 a, processed therein and then fed to the container 36d in the form of hardened cement with wood particles according to arrow 41 c. Exhaust air from the filter 40 is fed into the atmosphere according to arrow 41 b.
- the wood chips which have previously been mixed with the water, the aluminum sulfate and the water glass in the mixer 13, are continuously mixed with cement.
- the mixing time is a predetermined value between 45 and 75 seconds.
- the homogeneous chip mixture is then fed via a discharge 42 of the mixer 33 according to arrow 43 onto an inlet end 54 of a first conveyor belt 45.
- the conveyor belt 45 transports the chips to a conveyor belt discharge end 46, from which they are discharged onto a second conveyor belt 49 according to arrow 47.
- the conveyor belt 49 transports the chips to a forming station area 50 in which a forming station 51 for the outer layers and also a forming station 52 for the middle layer are arranged.
- the nature of the forming stations 51 and 52 will not be discussed further here, since they are conventional forming stations.
- a collecting container 55 is arranged below the inlet end 54 of the conveyor belt 45.
- the conveyor belt 45 can be operated in reverse so that the wood chips or mixed material that has fallen onto the belt are thrown from the inlet end 54 into the collecting container 55 according to arrow 56, especially when the system has stopped (see above).
- the line 58 symbolizes the floor of a hall in which the device 1 is set up. From Fig. 1 and Fig. 2 it is clear that the components of the device 1 can be arranged next to one another to a large extent, so that the construction height of the hall can be relatively low at 12 meters.
- the dashed line 59 shown in Fig. 1 symbolizes the ceiling of the hall.
- the information "+8,200" at reference number 95 for the storage bunker 5 means that it is located at a height of 8.2 meters in the hall.
- the hall ceiling 59 has a height of 12 meters.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022131514.2A DE102022131514B4 (de) | 2022-11-29 | 2022-11-29 | Verfahren und Vorrichtung zur Herstellung einer Mischgutmasse für eine Spanplatte |
| PCT/EP2023/083123 WO2024115362A1 (de) | 2022-11-29 | 2023-11-27 | Verfahren und vorrichtung zur herstellung einer mischgutmasse für eine spanplatte |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4626663A1 true EP4626663A1 (de) | 2025-10-08 |
Family
ID=87160971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23814138.6A Pending EP4626663A1 (de) | 2022-11-29 | 2023-11-27 | Verfahren und vorrichtung zur herstellung einer mischgutmasse für eine spanplatte |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4626663A1 (de) |
| DE (2) | DE102022131514B4 (de) |
| WO (1) | WO2024115362A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD208937A1 (de) * | 1982-08-26 | 1984-04-18 | Dietmar Hentschel | Verfahren zur verringerung der holzrichtsatztage |
| DE3404658A1 (de) * | 1984-02-10 | 1985-08-14 | "Würtex" Maschinenbau Hofmann GmbH & Co., 7336 Uhingen | Verfahren zur kontinuierlichen herstellung von formkoerpern, insbesondere von platten, aus gips und faserstoff und vorrichtung zur durchfuehrung des verfahrens |
| DE3708873C2 (de) * | 1987-03-18 | 1996-04-04 | Baehre & Greten | Verfahren und Vorrichtung zur Herstellung eines rieselfähigen, insbesondere zur Fertigung von Platten bestimmten Gemisches aus faserigem und/oder spanförmigem Holzmaterial und Gips |
| JPH08132418A (ja) * | 1994-11-11 | 1996-05-28 | Sekisui Chem Co Ltd | 水硬性無機質成形体の製造方法 |
| EP0742087B1 (de) * | 1995-05-10 | 2001-02-28 | Schwörer Haus GmbH & Co. | Verfahren zum Herstellen von Flachpressplatten in einem kontinuierlichen Prozess |
| JP2000263541A (ja) * | 1999-03-15 | 2000-09-26 | Kenzai Gijutsu Kenkyusho:Kk | セメント硬化体の製造方法 |
| DE202010004204U1 (de) | 2010-03-25 | 2010-07-08 | Binos Gmbh | Zementspanplatte |
-
2022
- 2022-11-29 DE DE102022131514.2A patent/DE102022131514B4/de active Active
- 2022-12-16 DE DE202022107035.0U patent/DE202022107035U1/de active Active
-
2023
- 2023-11-27 EP EP23814138.6A patent/EP4626663A1/de active Pending
- 2023-11-27 WO PCT/EP2023/083123 patent/WO2024115362A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024115362A1 (de) | 2024-06-06 |
| DE202022107035U1 (de) | 2023-06-27 |
| DE102022131514A1 (de) | 2024-05-29 |
| DE102022131514B4 (de) | 2025-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69108456T3 (de) | Faserproduktrückgewinnung in einer Vliesenherstellung aus Fasern. | |
| EP0744682B1 (de) | Verfahren und Anlage zur Aufbereitung einer Materialmischung | |
| DE102007049947A1 (de) | Verfahren, Streukopf und Anlage zur Herstellung einer Streugutmatte aus orientiert gestreuten Spanschichten im Zuge der Herstellung von Holzwerkstoffplatten | |
| EP0006519B1 (de) | Verfahren und Vorrichtung zum Herstellen eines schäumfähigen Gemisches aus mindestens zwei fliessfähigen, schaumstoffbildenden Reaktionskomponenten und Zuschlagstoffen | |
| EP0588160A1 (de) | Verfahren und Vorrichtung zur Behandlung von Abfallstoffen, insbesondere von organischen Gastronomieabfällen | |
| DE102004033777A1 (de) | Verfahren, Vorrichtung und Streukopf zur Streuung oder Schüttung von Partikeln | |
| DE3015250C2 (de) | Verfahren und Einrichtung zur Aufbereitung von Mineralfaserschrott unterschiedlicher Beschaffenheit, insbesondere hinsichtlich seiner organischen Bestandteile | |
| DE69015981T2 (de) | Verfahren und Vorrichtung zum Herstellen von farblichen Dekorationsplatten auf der Basis von abgeblätterten Gesteinsteilchen. | |
| EP0131162B1 (de) | Vorrichtung zum Aufbereiten von Strassendeckenbelägen | |
| EP2681785B1 (de) | Verfahren und vorrichtung zum herstellen einer mischung zum beschichten von batterie-elektroden | |
| DE3504787C2 (de) | ||
| AT413543B (de) | Verfahren zur herstellung einer sinterrohmischung | |
| DE102022131514B4 (de) | Verfahren und Vorrichtung zur Herstellung einer Mischgutmasse für eine Spanplatte | |
| DE3404658C2 (de) | ||
| DE3708873C2 (de) | Verfahren und Vorrichtung zur Herstellung eines rieselfähigen, insbesondere zur Fertigung von Platten bestimmten Gemisches aus faserigem und/oder spanförmigem Holzmaterial und Gips | |
| DE69216973T2 (de) | Verfahren zum Mischen und Granulieren von pulverförmigem Gut | |
| DE69002803T2 (de) | Schmelzverfahren für Schlamm. | |
| DE102004060403A1 (de) | Vorrichtung in der Spinnereivorbereitung zur Speisung einer Mehrzahl von Füllschächten, insbesondere Mischer, mit Fasermaterial | |
| DE2422487A1 (de) | Verfahren zur verbesserung des sichteffektes beim aufstreuen eines vlieses aus unsortierten bestandteilen, vorzugsweise pflanzlicher herkunft auf eine transportvorrichtung und einrichtung zur ausuebung des verfahrens | |
| DE2228407C3 (de) | Verfahren und Vorrichtung zur Herstellung von Belagmasse für den bituminösen Straßenbau | |
| EP0995726A1 (de) | Verfahren und Vorrichtung zum Herstellen eines hydraulischen Bindemittels | |
| DE69911979T2 (de) | Verfahren und anlage zum sieben von spänen | |
| DE20009961U1 (de) | Dosierreaktor für die Aufbereitung von Rohwasser und Anlage für die Aufbereitung von Trinkwasser | |
| DE102019130003A1 (de) | Gemengeanlage zur Herstellung eines Glasgemenges | |
| DE3611471A1 (de) | Verfahren und vorrichtung zur verlustfreien einbringung von bindemittel in mineralfaservliese |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| 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 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20250522 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| 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: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20260618 |