DE102016110070A1 - Plant and method for producing a material plate - Google Patents

Abstract

Plant and method for producing a, preferably at least partially oriented scattered, material plate comprising for processing cellulose-containing material (M) at least one crushing line (Z1, Z2), a drying device (T), a screening device (S) for dividing the dried material (Mt ) in at least two fractions (F1, F2) and a scattering system (1) with at least one scattering head (2) for at least partially oriented scattering of the fractions (F1, F2) to a spreading material mat (4) on an endlessly circulating forming belt (3) , And a press (5) for pressing the spreading material mat (4) to a material plate (6). The system according to the invention consists essentially in that a first and a second different comminution line (Z1, Z2) is arranged for the proportionate preparation of the present material (M) and that a device (25) for setting a predetermined ratio (%) of the material quantities the crushing lines (Z1, Z2) in front of the drying device (T) is arranged.

Description

The present invention relates to a system for producing a material plate according to the preamble of claim 1. Furthermore, the present invention also relates to a method for producing a material plate according to the preamble of claim 12.

In the production of material plates from scatterable materials, a mixture of particles or fibrous materials and a binder is scattered to a grit mat on a forming or conveyor belt, the grit mat is then fed to any necessary pretreatment and finally a compression. The compression can be carried out continuously or discontinuously by means of pressure and / or heat. In the usual material plates, which are produced here, it is usually MDF boards, consisting of medium-density fibers to chipboard from relatively small chips or OSB plates from oriented scattered coarse chips or better expressed coarse or large-scale chips. Scattering occurs in one or more plies as needed, with the need for multiple plies typically occurring with thicker sheets or with multilayer sheets. But even in the production of thin plates, different layers may be desired, especially if specially differentiated requirements exist between the middle layer and the outer layers. A distinction is made between two scattering possibilities in the scattering stations; the direct scattering after the spreading material bunker, whereby the spreading material is guided directly onto a forming belt by means of baffles or the indirect spreading via so-called spreading roll systems. In the case of indirect scattering, the spreading material discharged from the spreading hopper falls onto so-called spreading rolls, which divide the spreading material and, if necessary, also sort it. The scattering arrangements used in this case are already sufficiently described in their diversity in the patent literature, wherein either a central task of the material to be spread is performed on the scattering rollers or the spreading material is abandoned at one end of the scattering rollers. In this case, a portion of the chips is transported further while another part falls through the spreader rolls through as long as on the forming belt until only unsuitable litter material remains and must be removed from the manufacturing process. Both principles have proven themselves in production and are used successfully. Corresponding disclosures can be found in: DE 10 2007 049 947 A1 . DE 102 06 595 A1 and the EP 2 598 298 B1 ,

Any scattering of grit, here shavings or chips, with a certain fine fraction of the grit, causes problems in the production of high-precision basis weight distributions. Especially with a high throughput of grit and with an oriented scattering arise stray or other basis weight inaccuracies in a scattered grit mat, which worsen the subsequent quality of the material plate.

There are known from the prior art different Streukopfvarianten for spreaders. In the case of chip spreading for chipboard, the spreading material is sorted by size and / or density by means of a separating device, usually a roller scraping head or an air classifier, and deposited successively on a forming belt. As a rule, the fine grit is first deposited on the forming belt, then the coarser grit is scattered over the fine material. This gives a grit mat containing a fine topcoat and a second coarser layer. Depending on the method or scattering machine arrangement and execution, a coarse layer and / or a fine layer are sprinkled again. This results in a middle layer of similar coarse grit and two layers of fine grit. In contrast, systems for the production of oriented chipboard (OSB) work normally exactly opposite, because here the long chips are preferably laid longitudinally oriented on the forming belt as a cover layer and the shorter and broken chips are scattered in the middle layer oriented transversely. With the EP 2 598 298 B1 a corresponding device and a method has become known, are divided into the coarse chips in a combination trash after their entry first and are fed to their classification different types of scatter. It is provided that the coarse material of the outer layer is supplied and the finer material of the middle / inner layer. This application has proven itself in principle, but still offers room for improvement.

The OSB or chipboard produced by this prior art are popular because of their external appearance, because it gives an arbitrary surface pattern with a restlessness, which are used, for example, as partitions or privacy screens for construction sites. Also, these are often used in storage rooms or similar structures because of their rigidity as wall formwork.

However, coarse particle board can also serve as a substitute for expensive veneer or plywood boards. In particular, it has meanwhile also been desired that these coarse particle boards should be capable of being coated in order to refine them in known laminating processes.

Plant operators producing material plates have to offer a large number of manufacturable products in order to be competitive in international comparison. Here, in addition to the material selection, mixing and processing, a necessary variance in the manufacturing process and in particular a high degree of flexibility in the layer structure of a grit mat is necessary, from which then a material plate is pressed.

On this basis, the present invention has the object to provide a comparison with the prior art improved and much more flexible system and a corresponding manufacturing method. Also, an improved, and in particular coatable material plate is to be created from coarse chips.

The invention is based on a system for producing an at least partially oriented scattered material plate, which for processing cellulose-containing material at least one crushing line, a drying device, a screening device for dividing the dried material into at least two fractions and a scattering system with at least one scattering head for at least partially oriented scattering of the fractions to a grit mat on an endlessly circulating forming belt and a press for pressing the grit mat comprises a material plate.

The solution to the problem is that for the partial preparation of the present material, a first and a second different crushing line is arranged and that a device for setting a predetermined ratio of the amounts of material from the crushing lines is arranged in front of the drying device.

At least one drum chipper and a subsequent knife ring chipper with fixed rotation axis may be arranged in the first crushing line.

Preferably, at least one Messeringzerspaner be arranged with a displaceable axis in the second crushing line, wherein preferably the knife ring is rotated past fixed beams or round wood for the production of coarse chips.

Alternatively or cumulatively, the screening device is suitable for dividing the dried material into two fractions based on their length and / or width.

Alternatively or cumulatively, a bunker for storing the coarser fraction with the scattering head for scattering a middle layer of the spreading material mat and the bunker for supporting the finer fraction with the scattering head of the outer layers is operatively connected.

Alternatively, a bunker for storing the coarser fraction with the scattering head for scattering the outer layers of the spreading material mat and the bunker for supporting the finer fraction with the scattering head of the middle layer can be arranged operatively connected.

In particular, it is provided in the system that it is possible to switch over between these two preceding operating modes in order to be able to produce different layer structures of the spreading material mat in one system.

Particularly preferably, it can be provided that classifying scattering heads are arranged for classified scattering of the first and second fractions.

Alternatively or cumulatively, it can be provided that the screening device for the dry material is suitable for depositing a third fraction, preferably a smaller particle size than that of the first or second fraction, and this is preferably operatively connected to a further comminution line, preferably an impact mill.

Alternatively or cumulatively, it can be provided that the bunker of the third fraction is operatively connected to the spreading head for producing a covering layer of the spreading material mat.

Alternatively or cumulatively, provision can be made for separating a fourth fraction, preferably the very fine particles, from the dried material and / or from the third fraction into a sieve, in particular before and after the comminution line, particularly preferably a bunker of the fourth fraction is operatively connected to a thermal recovery.

Particularly preferably, a control device is arranged in the system in operative connection with the device for adjusting the ratio of the material to be transferred to the drying device from the comminution lines.

A method for producing an at least partially oriented scattered material plate from which the invention proceeds, operates according to the following process steps, wherein cellulosic material is comminuted in at least one crushing line, dried in a drying apparatus to dry material, then divided into at least two fractions by means of a screening device and at least one of the fractions are deposited in a spreading system by means of at least one spreading head on an endlessly circulating forming belt to a grit mat and the grit mat is finally pressed in a press to a material plate.

The solution to the problem for the method consists essentially in that the present material is proportionally processed in a first and second crushing line and that the material from these at least two crushing lines in a predetermined ratio to each other of the drying device is fed to the drying.

In this case, the material is preferably pre-comminuted in a first comminution line with at least one drum chipper machine and transferred to a subsequent knife ring chipper having a fixed rotation axis for further comminution.

In addition, the material in a second crushing line is particularly preferably made with at least one Messerringzerspaner with a displaceable axis, wherein the blade ring is rotated past fixed beams or round wood for the production of coarse chips.

Alternatively or cumulatively, the material is pre-sorted on the basis of its properties and supplied in a differentiated manner to the comminution lines.

Alternatively or cumulatively, the dried material is divided into two fractions by length and / or width.

Alternatively or cumulatively, the coarser fraction is used to scatter a middle layer of the spreading material mat and the finer fraction to scatter the outer layers.

Alternatively or cumulatively, the finer fraction is used for scattering a middle layer of the spreading material mat and the coarser fraction is used for scattering the outer layers.

Alternatively or cumulatively, the fractions are scattered in at least one scattering head classified.

Alternatively or cumulatively, a third fraction of fine material is deposited from the dried material, wherein preferably the proportion of the third fraction is adjusted depending on the necessary throughput of the fine material.

Alternatively or cumulatively, the third fraction is fed to a further comminution line, preferably an impact mill.

Alternatively or cumulatively, the third fraction is used for the production of cover layers of the spreading material mat, the cover layers usually having the finer material than the first two fractions.

Alternatively or in cumulative fines as the fourth fraction, preferably dust, from the fractions or the dried material, in particular from the third fraction before and after the crushing line, separated by means of a sieve and fed to a thermal utilization. This is especially done when not enough or no material is needed to make a grit mat in the third fraction area.

Preferably, by means of a control device, a device for adjusting the mixing ratio of the material to be transferred to the drying device is controlled from the comminution lines, preferably as a function of predetermined parameters or tables, most preferably below Inclusion of measured values from parts of the system, which are operatively connected to the control device for the transmission of the measured values.

Advantageous embodiments and developments, which can be used individually or in combination with each other, are the subject of the dependent claims.

It is according to the invention is not mandatory that different crushing processes must be performed with technologically significantly different crushing devices. It would be sufficient for the purposes of the invention, if a crushing line, for example, with a Messerringzerspaner a knife width of 500 mm comminutes the material and in the second crushing a Messerringzerspaner with an alternative blade width, for example, 750 mm, 1000 mm or 250 mm. Decisive in the context of the invention would be that after the crushing lines two material streams with significantly different particle size distributions are present, which are then mixed before entering the dryer according to the requirements of production in the system. A change in the ratio is particularly necessary if one or more of the bunker no longer have enough material or a production is converted.

Particularly preferably, the system has a control device, in particular digitally controlled, which controls the material run in the system according to the specifications of the operator and thereby, according to the production conditions, controls the amount of material in the bunkers on the mixing ratio of the crushing lines. In this case, for example, the wear in the crushing lines can be counteracted accordingly, for example, if the proportion of the first fraction of coarse chips due to deteriorating cutting performance is lower or over a certain period of time only poor material has been used, which is not enough yield for the first fraction offers. In this sense, it is particularly preferably provided that the control device receives feedback from the bunkers, the crushing lines, the dryer, the screening devices, the spreader, or the forming strand (forming belt with spreading material) and the press and vice versa these system components to the changed Conditions can adapt.

The following tables give typical parameters for orientable grit in the OSB production for very fine (FK), fine (GK, KS, LS) and / or coarse fractions (KB, LB) whose exemplified ratio (5:75: 20) may vary depending on the grit but also different. In particular, the transition from FK to GK is fluid and dependent on the set or used screening devices. Fines FK Fine chips (fine grain) length <4 mm width <2 mm thickness <1 mm fines GK shavings length > 5 mm <35 mm width <5 mm thickness <1.5 mm KS Short narrow coarse chip length > 35 mm <100 mm width <15 mm thickness <1.5 mm LS Long narrow coarse chip length > 100 mm <250 mm width <15 mm thickness <1.5 mm coarse fraction KB Short-wide coarse chip length > 100 mm <250 mm width <15 mm thickness <1.5 mm LB Long-wide coarse chip length > 100 mm <250 mm width <15 mm thickness <1.5 mm

Further advantages of the invention will be described below with reference to embodiments and in conjunction with the drawings.

In it show schematically:

1 a plant according to a first embodiment for producing a material plate starting from the storage of the starting material to the press,

2 the exemplary scattering system after 1 on a larger scale,

3 a representation of an exemplary material flow from the shredding lines to the creation of a spreading material mat,

4 a first embodiment of a multilayer material plate or grit mat,

5 A second embodiment of a multilayer material plate and,

6 a third embodiment of a multilayer material plate with a top layer of fines.

In the following description of the preferred embodiments of the present invention, like reference characters designate like or similar components.

In 1 is schematically the manufacturing process and the material flow from the storage bin of the material M up to in a press 5 Pressed spreading material mat 4 and cut to appropriate lengths material plate 6 shown. It should be noted that the proposed process is shortened and not shown in all actual necessary details. Nevertheless, based on the scheme, the invention can be sufficiently and understandably explained.

The material M is supplied to a processing after removal from the storage area, which essentially comprises the crushing and, if necessary, cleaning. Under certain circumstances, the material is presorted or already stored according to the use for the comminution lines Z1 or Z2. In this embodiment, the material M is either in a first crushing line Z1 by means of a drum chipper 8th pre-crushed and then in a Messerringzerspaner 9 crushed to a predetermined particle size distribution. Here, in this crushing Z1 of Messering 10 a fixed axis 13 on top of the knife ring 10 and / or the corresponding counter knife rotates.

In the second crushing line 7 is a so-called Langstamm-Zerspaner (English: Longlog Flaker) arranged. The essential difference to the aforementioned knife ring chipper 9 exists in the movable axis 12 of the knife ring 11 compared to the clamped and to be machined material M. The particular advantage is that long and wide coarse chips can be produced with this long-stem shredder, which are suitable for high-quality production of chipboard (OSB).

After the comminution lines Z1, Z2, the comminuted material M becomes a device 25 to set the predetermined ratio between the amounts of material from the two crushing Z1, Z2 passed, and from there in the appropriate ratio% a dryer 14 a drying device T pass. The device 25 For example, may consist of two separately adjustable in their flow rates and / or flow rates conveyors, the crushing Z1, Z2 with the dryer 14 connect. Alternatively, it may also be useful to provide one or more bunkers (not shown but assigned to the comminution lines) between the comminution lines Z1, Z2, Zn and the drying device T, from which the material can be removed in the predetermined ratio%.

After the drying device T, the dried material Mt passes into a sifter S, which is suitable for dividing the dry material Mt into various fractions. By way of example, in the present exemplary embodiment, this is preferably divided into four fractions F1, F2, F3, F4. The four factions are now in a bunker 21 for fraction F1, in a bunker 22 for fraction F2, into a bunker 23 for the fraction F3 and, if necessary, depending on the equipment of the screening device S for a fourth fraction in a bunker 24 transferred. These bunkers 21 . 22 . 23 . 24 can be designed as so-called dosing bunker and for the metered discharge entspechende metering devices (not shown).

The fraction F1 is preferably coarse material, the fraction F3 is preferably fine material and the fraction F2 is according to the embodiment, the material having a particle size distribution which is arranged between the fractions F1 and F3. In a preferred embodiment, for the production of a coarse chipboard / material board 6 with oriented layers and outer layers, fractions F1 and F2 are orientable material suitable for transverse and / or longitudinal scattering.

In a production of a three-layer coarse chipboard fractions F1 and F2 would already be sufficient to produce this, the fractions F1 and F2 according to the specifications of a scattering system 1 be fed so that a grit mat 4 on a form band 3 can be produced, which has at least one oriented scattered layer. In this case, in the present process scheme, the three central scattering heads 2 used for the fractions. The spreading material mat produced in this way 4 can then in a press 5 to a material plate 6 be pressed. For possible layer structure of a grit mat is in detail to the description of the figures for 2 directed.

If enough suitable material for the fraction F3 (bunker 23 ), this can be used directly for the production of a fine cover layer along the dashed arrow. As a rule, however, fraction F3 is again subjected to secondary comminution, in this case a comminution line Z3, and by means of an impact mill 18 shredded. Here, the fraction F3 after the crushing line Z3 directly to the bunker 23 be fed or again in a sieve 19 sieved and another fraction F4 deposited. The fraction F4 is preferably dust or other fines, which is preferably suitable for thermal utilization V by means of a dust or granular burner and can for this purpose in a bunker 24 be stored. Incidentally, already in the screening device S after the dryer 14 fines are already deposited if this is necessary or desired. According to the invention, the ratio% between the comminuting lines Z1 and Z2 is set according to the requirements of the production or preferably by means of a control device 20 controlled. This control device 20 is preferred with level sensors (not shown) of the bunker 21 . 22 . 23 . 24 operatively connected and will supply the shredding lines Z1 and Z2 with material M according to the requirements and the shredded material in the device 25 Divide% according to the required ratio. The corresponding connection arrows are intended to represent the active connections with the individual system parts and are not exhaustive. Most preferably, the control device should 20 In a digitized form, tables or recipes for the production of material plates can be used and, according to these tables, the production parameters of the plant can be controlled.

In 2 is the spreader on an enlarged scale 1 shown. The five scatter heads 2 can be used to produce a five-layer spreading material in a consecutive application 4 to create. Alternatively, you can switch off various scattering heads 2 different layer structures can be achieved. In the scattering heads are from left to right a roller scattering device, a Longitudinal orientation, a Querorientiervorrichtung, a Längsorientiervorrichtung and again a roller scattering device arranged by way of example.

For example, the odd scattering heads 2 not operated, so is only a single-layer longitudinally oriented grit mat 4 created, preferably from the fraction F1 and / or F2. This can be done by operating the two outer scattering heads 2 with a cover layer 17 be provided, which is preferably formed from the material of fraction F3. In an alternative application, all three orienting scattering heads 2 (second, third and fourth spreading heads) and a three-layer oriented spreading material mat with a middle layer 15 made of transversely oriented material and two outer layers 16 be formed with longitudinally oriented material. Depending on the supply of fractions F1 or F2 to the scattering heads 2 Now a classic coarse chipboard (OSB) is produced, which has the outside of the fraction F1 with the larger coarse chips and inside the fraction F2 with the smaller coarse chips. Alternatively, when switching the fractions, a coatable coarse chipboard can be created in which the coarser fraction F1 in the middle layer 15 and the finer fraction F2 in the outer layers 16 is arranged.

Now all scattering heads 2 supplied as shown with material of the fractions F1, F2 and F3, a so-called fine OSB plate is produced, which over the outer oriented layers 16 as a cover layer 17 still finest material of the fraction F3 is arranged. Such a material plate produced 6 would have a coatable surface.

In a very particularly preferred embodiment, at least parts of the fractions F1, F2, or F3 in the scattering heads 2 Scattered classified by suitable devices.

3 shows an alternative plant and method for producing a material plate 6 , Here, after the sieve device S, the fractions F1 to F3 are formed such that the coarse fraction with the broad coarse chips in the fraction F1 and the fine fraction with the narrow coarse chips in the fraction F2 are deposited. The fine fraction FK is assigned as fine grain fraction F3 and in an impact mill 18 crushed and then used in the scattering heads for the production of the top layer. Preferably, the cover layer is spread classified, so that the fines FK outside (based on an imaginary center line of the structure of the grit) is angeordet and according to a particle size distribution of a fraction, the coarse grain GK is arranged in the direction of the middle layer. Subsequently, the narrow fraction F2 is also classified classified on the first cover layer, with the short narrow coarse chips KS are first deposited and then the long coarse chips LS. For the middle layer, the broad coarse chips from the coarse fraction of fraction F1 are preferably deposited so that outside the short broad coarse chips KB and inside the long wide coarse chips LB are deposited. The long wide coarse chips LB thus form the part of the middle layer, that of an imaginary center line of the spreading material mat 4 equivalent. Accordingly, the fourth and fifth scattering heads 2 mirror image used to ensure a uniform layer structure.

4 shows a three-layer material plate 6 from a pressed three-layer spreading material mat / material board with two outer longitudinally oriented and classified (shortly after long) outer layers mainly of narrow coarse chips KS, LS and a middle transverse oriented layer mainly of broad wood chips KB, LB, again classified from short to long.

5 shows a three-layer, trained as OSB material plate / grit mat with two outer longitudinally oriented and classified outer layers mainly from broad coarse chips KB, LB and a middle transverse oriented mainly from narrow coarse chips KS, LS. Again, a classifying arrangement in the individual layers should be shown again.

6 Finally, shows a five-layer, designed as a surface-refined fine OSB five-layer material / grit mat with two outer unoriented outer layers of fine chips FK and chips GK, which are preferably classified classified. Among them are two longitudinally oriented and classified layers mainly consisting of narrow coarse chips KS, LS and a middle transverse layer mainly consisting of broad wood chips KB, LB. Here, too, in the classified areas, the narrow coarse chips are classified after short KS and long LS coarse chips respectively the broad coarse chips are classified after short KB and long LK coarse chips.

LIST OF REFERENCE NUMBERS

1

 dispersion unit

2

 spreading head

3

 forming belt

4

 grit mat

5

 Press

6

Material board

7

 Knife ring

8th

 Hogger

9

Knife ring

10

Knife ring (from 9 )

11

Knife ring (from 7 )

12

Axis (movable from 7 )

13

 Axis (fixed)

14

 dryer

15

Middle class (from 4 )

16

Layer (from 4 )

17

Topcoat (from 4 )

18

 impact crusher

19

 scree

20

 control device

21

 Bunker (F1)

22

 Bunker (F2)

23

 Bunker (F3)

24

 Bunker (F4)

25

 contraption

%

 relationship

M

 material

Mt

 Material (dry)

P

 production direction

S

 screening device

T

 drying device

V

 Recovery (thermal)

Z1

crushing line

Z2

 crushing line

Z3

 crushing line

F1

 fraction

F2

 fraction

F3

 fraction

F4

 Fraction (ultrafine fraction)

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102007049947 A1 [0002]
• DE 10206595 A1 [0002]
• EP 2598298 B1 [0002, 0004]

Claims (24)

Plant for producing a, preferably at least partially oriented scattered, material plate comprising for processing of cellulose-containing material (M) at least one crushing line (Z1, Z2), a drying device (T), a sieve device (S) for dividing the dried material (Mt) in at least two fractions (F1, F2) and one spreading plant ( 1 ) with at least one scattering head ( 2 ) for at least partially oriented scattering of the fractions (F1, F2) into a spreading material mat ( 4 ) on an endlessly circulating forming belt ( 3 ), and a press ( 5 ) for pressing the spreading material mat ( 4 ) to a material plate ( 6 ) characterized in that for the partial preparation of the present material (M) a first and a second different crushing line (Z1, Z2) is arranged and that a device ( 25 ) is arranged to set a predetermined ratio (%) of the amounts of material from the crushing lines (Z1, Z2) in front of the drying device (T). Installation according to claim 1, characterized in that in the first crushing line (Z1) at least one drum chipper machine ( 8th ) (drum chipper) and a subsequent knife ring chipper ( 9 ) is arranged with a fixed axis of rotation. Installation according to claim 1 or 2, characterized in that in the second crushing line (Z2) at least one Messeringzerspaner ( 7 ) with a displaceable axis ( 12 ), wherein preferably the knife ring ( 11 ) is rotated past fixed beams or round wood for the production of coarse chips. Installation according to one or more of the preceding claims, characterized in that the screening device (S) is suitable for dividing the dried material (Mt) into two fractions (F1, F2) on the basis of their length and / or their width. Installation according to one or more of the preceding claims, characterized in that a bunker ( 21 ) for storing the coarser fraction (F1) with the scattering head ( 2 ) on the dispersion of a middle class ( 15 ) of the spreading material mat ( 4 ) and the bunker ( 22 ) for storing the finer fraction (F2) with the scattering head ( 2 ) of the outer layers ( 16 ) is operatively connected. Installation according to one or more of the preceding claims, characterized in that a bunker ( 21 ) for storing the coarser fraction (F1) with the scattering head ( 2 ) for scattering the outer layers ( 16 ) of the spreading material mat ( 4 ) and the bunker ( 22 ) for storing the finer fraction (F2) with the scattering head ( 2 ) of the middle class ( 15 ) is operatively connected. Installation according to one or more of the preceding claims, characterized in that classifying scattering heads ( 2 ) are arranged for classified scattering of the fractions F1 and / or F2. Installation according to one or more of the preceding claims, characterized in that the sieve device (S) for the dry material (Mt) is suitable for a third fraction (F3), preferably a smaller particle size than that of the first or second fraction (F1, F2). , to deposit and this preferably with another crushing line (Z3), preferably an impact mill ( 18 ), is operatively connected. Installation according to one or more of the preceding claims, characterized in that the bunker ( 23 ) of the third fraction (F3) with the scattering head ( 2 ) for the production of a cover layer ( 17 ) of the spreading material mat ( 4 ) is operatively connected. Plant according to one or more of the preceding claims, characterized in that for the separation of a fourth fraction (F4), preferably the finest particles, from the dried material (Mt) and / or from the third fraction (F3) a sieve, in particular before and after the crushing line (Z3) is arranged, with particular preference a bunker ( 24 ) of the fourth fraction (F4) with a thermal utilization (V) is operatively connected. Plant according to one or more of the preceding claims, characterized in that in operative connection with the device ( 25 ) for adjusting the ratio (%) of the material to be transferred to the drying device (T) from the comminution lines (Z1, Z2) a control device ( 20 ) is arranged. Process for producing a. Preferably, at least partially oriented scattered, material plate according to the following process steps, wherein cellulosic material (M) comminuted in at least one crushing line (Z1, Z2), dried in a drying device (T) to dry material (Mt), then in at least two fractions ( F1, F2) by means of a sieve device (S) and at least one of the fractions (F1, F2) in a scattering system ( 1 ) by means of at least one scattering head ( 2 ) on an endlessly circulating forming belt ( 3 ) to a grit mat ( 4 ) and the spreading material mat ( 4 ) finally in a press ( 5 ) to a material plate ( 6 ) is pressed, characterized in that the present material (M) is proportionally processed in a first and second crushing line (Z1, Z2) and that the material from these crushing lines (Z1, Z2) in a predetermined ratio (%) to each other of the drying device (T) are fed for drying. Method according to the preceding method claim, characterized in that a first comminution line (Z1) from conveyor technology and at least one drum chipper machine ( 8th ) (drum chipper) and a subsequent knife ring chipper ( 9 ) with a fixed axis of rotation. (A3) Method according to one or more of the preceding method claims, characterized in that a second comminution line (Z2) from conveyor technology and at least one knife trimmer ( 7 ) with a displaceable axis ( 12 ), wherein the knife ring ( 11 ) is rotated past fixed beams or round wood for the production of coarse chips. Method according to one or more of the preceding method claims, characterized in that the material (M) is pre-sorted on the basis of its properties and supplied in a differentiated manner to the comminution lines (Z1, Z2). Method according to one or more of the preceding method claims, characterized in that the dried material (Mt) is divided into two fractions (F1, F2) on the basis of its length and / or its width. Method according to one or more of the preceding method claims, characterized in that the coarser fraction F1 is used for scattering a middle layer ( 15 ) of the spreading material mat ( 4 ) and the finer fraction F2 for scattering of the outer layers ( 16 ) is used. Method according to one or more of the preceding method claims, characterized in that the finer fraction F2 for scattering a middle layer ( 15 ) of the spreading material mat ( 4 ) and the coarser fraction F1 for the dispersion of the outer layers ( 16 ) is used. Method according to one or more of the preceding method claims, characterized in that the fractions F1 and / or F2 in at least one scattering head ( 2 ) are classified scattered. Method according to one or more of the preceding method claims, characterized in that of the dried material (Mt) a third fraction (F3) is deposited with fine material, wherein preferably the proportion of the third fraction is adjusted depending on the necessary throughput of the fine material. Method according to one or more of the preceding method claims, characterized in that the third fraction of a further crushing line (Z3), preferably an impact mill ( 18 ) is supplied. Method according to one or more of the preceding method claims, characterized in that the third fraction (F3) is used for the production of cover layers ( 17 ) of the spreading material mat ( 4 ) is used Method according to one or more of the preceding method claims, characterized in that very fine particles as fourth fraction (F4), preferably dust, from the fractions (F1, F2) or the dried material (Mt), in particular from the third fraction (F3) before and after the comminution line (Z3), by means of a sieve ( 19 ) is separated and a thermal utilization (V) is supplied. Method according to one or more of the preceding method claims, characterized in that by means of a control device ( 20 ) a device ( 25 ) is controlled for adjusting the mixing ratio of the material to be transferred to the drying device (T) from the comminuting lines Z1, Z2, preferably as a function of predetermined parameters or tables, most preferably with the inclusion of measured values from parts of the system which are used to transmit the measured values the control device ( 20 ) are operatively connected.

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