MXPA00006637A - Method for processing mixed waste, processing plant and buffer silos therefor - Google Patents

Abstract

A method for processing mixed waste in a continuously operating processing plant comprising a plurality of successive stations which are connected to each other by means of at least oneconveyor segment and wherein the mixed waste material is processed in at least one step of the inventive method and/or conveyed along at least one conveyor section, whereby the particles in the stream of mixed waste are accelerated at least in one transfer site between a conveyor section or one transfer site between two conveyor sections. Also disclosed is a processing plant for implementing said method and buffer silos which are used in the plant.

Description

PROCESSING PROCESSING OF MIXED WASTE / PROCESSING PLANT AS WELL AS SILO SEPARATOR FOR IT. FIELD OF THE INVENTION The invention relates to a process for the processing of mixed waste, especially of such mixed waste, consisting essentially of synthetic materials, bonded materials of synthetic material, glass, metals, paper, cardboard and other disruptive materials. The invention also relates to a processing plant for carrying out the process as well as a buffer or waiting silo, which is used in the processing plant. BACKGROUND OF THE INVENTION In the introduction of the dual system with a view to carrying out the packaging arrangement in Germany, the ordered evaluation of the accumulated synthetic materials represents a special requirement. Thus enters a totally new fraction, the synthetic materials in the market. For synthetic materials mixed in their heterogeneity and variable composition new paths of evaluation must be found. For the evaluation of the mixed synthetic materials, an evaluation especially in the raw material comes into consideration. Precondition for this is a preparation of the material in an agglomerate, REF .: 121404 that satisfies pre-given specifications. Since the synthetic or plastic materials in the framework of the dual system accumulate together with a series of disruptive materials, procedures are sought, which reduces the selection process to a presentable curse, but nevertheless guarantees a certain degree of purity of the materials synthetic Metallic detrimental materials can be selected by means of magnetic separators and eddy current separators, heavy plastic materials and other heavy foreign parts are usually separated with the aid of wind treatment from the material to be processed. In addition, different methods are known, in particular for removing paper from paper-synthetic composite materials. With the improved selected separation of disruptive materials, dry processes for the processing of mixed synthetic materials can now be used, with which, with the application of a comparably low amount of energy, a high-quality synthetic agglomerate can be generated. Another extension has been found with the method disclosed in WO 96/20819, in which the material to be processed is first crumbled and freed of magnetic materials. The comminuted material is then conveyed to I an agglomerator, pressed or thermally compacted, where fluid materials, such as water vapor, ash and paper are sucked by means of a suction device. The agglomerated material is then dried and then hooded. For economic reasons it is desirable to ensure a continuous operation of the plant. This can not be done with the method known from WO 96/20819. The failure of a component of the plant leads as a rule to an arrest or pause of the entire plant and there are times of detention due to repair and maintenance work. It is the task of the present invention to prepare a process for the processing of mixed waste, which essentially consists of synthetic materials, cardboard, paper, paper-synthetic material, glass, metals and dismantling substances, for the continuous operation of a processing plant . This task is solved by means of a method according to claim 1. Advantageous constructions are the object of the sub-claims. A processing plant for carrying out the process of the invention is defined in claim 9.

A process according to the invention for the processing of mixed waste for the operation of a mechanical drying plant that works continuously, which has a multiplicity of processing stations joined by at least one transport section and which follow each other, at least with the steps in succession of separation of metals, treatment with wind, and removal of paper, among which provide other steps or which occur directly, is characterized in that, the stream of useful material undergoes in the passage to the last transport section before the processing station an acceleration, so that the currently average speed of the particle of the useful material in the last section of transport and with this directly before the entry into the processing station of the metal separation is less than directly before the entry into the processing station of the subsequent treatment and this is again smaller than the speed average directly before entry into the paper separation processing station. Here is the stream of useful material from the material stream of high qualitative value, thus the material that in the next course of the procedure still has to be elaborated more, and the actual velocity of the particle is the path actually left behind by the particle per unit of weather. Preferably the waste stream mixed between two neighboring stations is forced with a constant speed in the corresponding transport section. It can also be provided that at least one of the stations is maintained a temporary storage of material given the pre-treated case. An embodiment of the method according to the invention is characterized by the following steps: a) crushing of the mixed waste; b) intermediate storage of shredded waste; c) Uniform continuous forcing of the intermediate stored waste; d) separation of magnetic metal parts; e) separation of non-magnetic parts from materials with a specific weight, which exceeds a determinable minimum specific weight; f) separation of paper, for example from paper composites - synthetic material; g) intermediate storage of the fraction of synthetic material obtained; h) agglomeration of the synthetic fraction; Under the term agglomeration, compression must be understood as a material that can be shaken with the application of heat and / or friction energy in the material to be agglomerated. If necessary, other process steps can be connected, for example after the intermediates of the fraction of synthetic material obtained it is possible to carry out another separation of the non-magnetic parts. It can also be advantageous to shred the agglomerated synthetic material to a smaller grain size. Under certain circumstances it makes sense, then to re-separate magnetic metal parts, which first after the crushing became susceptible to magnetic separation. According to another embodiment, the process according to the invention is conducted in such a way that the material to be worked is driven in certain transport sections only pneumatically. The invention is based on the knowledge that as a precondition for a continuous process, it is possible to ensure a free operation of wear and disturbances in such a way that the flow of the waste material to be treated is accelerated, so that it is practically realized a "separation or distancing" of the material. This facilitates the separation of annoying materials in the various separators of annoying materials. The invention is further based on the knowledge that a continuous process can be easily conducted, if care is taken to do so, that in the critical places of the processing process an intermediate storage of the material processed there is carried out. As already indicated at the beginning, it is the waste shredders, such critical components. A multiplicity of such shredders (shredders) is generally provided in a processing plant. Which all work in a buffer silo. Failure of a shredder will not lead to a stoppage of the plant, since material can still be conveyed from the separation or damping silo to the next plant component. Here the known advantage of a buffer silo can be used, which homogenizes the pre-shredded material and this in a uniform composition can be provided to the next component of the plant. Shreddders or crushers pulsate very hard during operation, making it difficult to evenly reload the following separator of disruptive material. The damping silo acts with that also as a mechanical decoupling for the components of the plant. Next to the buffer silo, at least one magnetic separator can be provided, in addition at least one device for the separation of the non-magnetic parts of materials with a specific weight, which exceeds a minimum specific stable weight. It has been presented as advantageous to use the so-called drop tube separators, which are the subject of the German patent application simultaneously filed 198 ... (Minutes of representative: DK2860). With such tubular drop separators, heavy metallic and non-metallic particles are filtered, so that as a rule a swirl current separator can be dispensed with. The plant also includes at least one device for separating paper, for example from paper-plastic composites, to which or which a damping silo may be connected., in which the plastic fraction is accumulated from each device for paper separation. Thus it becomes possible to establish a disc compressor that works continuously, which for example is obtainable as CV 50 from Neztsch Condux, Hanau. The homogenizing and equalizing effect of the buffer silo, where the fraction of plastic or synthetic material is accumulated, can be used to connect another device for the separation of non-magnetic heavy parts. A buffer silo for a processing plant, which works in accordance with the method of the invention, and which is connected after the shredder, consists of a box with at least one opening in the upper area of the box to introduce the material to be stored intermediate and at least one exit opening for the material, and is characterized in that, in the floor area of the box, a multiplicity of extraction snails are provided where the extraction snails are arranged in such a way that in its action they cover the entire floor surface of the box, and at least a running snail is provided, which homogenizes the extraction of the material from the extraction snails. This prevents large amounts of material from piling up in the chambers of the scraper chain conveyor. Here the extraction snails can work with a different direction of rotation, for example they can be selected to work by turning left or right. Advantageously, the extraction snails are arranged parallel to each other, and the impulse snail will be placed with a rotation of 90 ° with respect to the extraction snails. The running or driving snail can also work by turning to the left or to the right selectively. A buffer silo for a processing plant, in which the plastic fraction is accumulated, consists of a box with at least one opening in the upper part of the box for introducing the material to be stored intermediate and at least one supply opening or withdrawal for the material and will be characterized in that at least one loosening snail is provided that is pressurized for the material stored in the silo and a suction installation that conducts air from the box to at least one loosening snail . In addition, special extraction snails are supplied in the silo, which force the intermediate storage material to at least one loosening snail. It has been presented as suitable for the purpose pursued, modeling the box in the floor area as conical or trapezoid-shaped depending on the basic shape of the box-widening, to avoid the formation of bridges in the silo. The invention will now be explained in more detail with reference to the accompanying drawings. Sample: Figure 1 with partial images A, B, C, D, and E schematically the process conduction for a processing process using the invention; Figure 2 is a longitudinal sectional view of a damping silo connected later to one or more waste shredders; Figure 3 is a longitudinal sectional view of a damping silo connected after a paper separator; Figure 4 is a longitudinal sectional view of a tubular fall separator of the station 6; Figure 5 a longitudinal section of a tubular fall separator of the station 9; Figure 6 is a longitudinal sectional view of an agglomerator of station 10; In FIGS. 1A to E, the process according to the invention of processing for the production of a plastic agglomerate with stations 1 to 18 is represented schematically. Here the arrows show the course of the mass flow. The arrows indicated by the figure "1" indicate the course of the supply air, the arrows with the number "2" indicate the mass flow of paper. The arrows with the figure "3" indicate the mass flow for the magnetic metals, the arrows with the figure "4" the direction for the materials of non-magnetic disorder, these contain mainly glass, synthetic materials covered with aluminum, lumps of paper wet and damp, stones, wood, no packaging with a fraction of synthetic material of less than 50% and non-magnetic metals. The arrows with the figure "5" finally indicate the current, which leads the mixed synthetic material to be processed as agglomerate, with a reduced fraction of disruptive materials or other valuable materials, which are to be filtered in the individual stations. The unpurified mixed synthetic material is supplied and discharged, as shown in Figure 1A (station 1) as well as characterized (station 2), so that disruption materials, which lead to a de-agglomeration of the agglomerate or damage in the components of the plant, can be clearly coordinated. The material supplied is first shredded in a waste shredder or shredder, known per se, to a given grain size (station 3). The synthetic waste placed in the separator is pressed by a lower container with a defined pressure in the rotor. The fraction is shredded by the rotor, until the material supplied falls through a screen placed in the floor area of the mill, having for example a hole diameter of 45 mm. By the application of different sieve sizes the diameter of the shredded material can be adjusted to the needs of the plant. The shredded material, then, as shown in Figure IB, by means of a scraper chain conveyor or the like is conducted to the buffer or wait silo (station 4). The practice has shown that the chain shaper conveyors are best adapted to the harsh conditions that prevail in the processing plant. Especially cailable floor sheets are made from here on as part of wear and are thus replaceable. As an alternative transport belts are possible, these two types of conveyors can be used depending on the selection in the transport sections, from the mechanical aspect. The damping silo of station 4, as well as later the buffer silo of station 8, serve as storage stations. If several waste shredders are provided in a parallel connection in the plant, they will all work in coordinated transport sections in a silo. It is also possible to connect the shredders in series, so only a transport aggregate would be necessary. The degree of filling of the silo is monitored manually. When a maximum filling state is exceeded, the operator disconnects one or more of the devices before the silo; when the lower filling state is reached, the operator returns to connect the devices. The monitoring of the filling status can also be carried out automatically, for example by light limits or rotating fin communicators where, when a first filling state is exceeded, one or several devices and when falling below a certain second filling state are reconnected. Construction details of the waiting or damping silo are shown in figure 2 and are described below. A scraper chain conveyor is loaded with material, uniformly from the silo and runs with a constant speed of for example 0.25 m / s. This conveyor has two openings, where an opening is variable in the cross section by means of a pneumatic shifter S. If this conveyor is uniformly distributed to two vibration troughs VI, V2 that move precisely somewhat faster than the chain conveyor of scraped with a speed of 0.33 m / sec, and that continue moving to the material. The first vibration trough in the direction of travel VI opens if necessary, if for example two successive sections of the floor must be covered. Here three positions of the displacer S are possible, depending on whether only one of the sections of the plant has to be covered, or both sections have to be covered simultaneously. For the vibration trough V2 placed second in the direction of travel only has the scraper chain conveyor, an opening. The vibration troughs VI, V2 transport all the material by means of magnetic drums (station 5), where here correspondingly to the number of vibrating troughs are provided two magnetic drums. In the vibration troughs the metal parts sink due to gravity and due to the movement of agitation within the fraction. This allows an almost total separation of the heavy metal parts of the lightweight synthetic material. It would be optimal, if in the magnetic drums the metal parts were put in a layer. This is difficult to achieve in practice. The magnet inside the magnetic drum has a radius of action of 180 °. The mixed synthetic material falls at an angle of 90 to 180 ° in a funnel. The magnetic metal parts remain gripped in the drum, by the rotation of the drum they are taken from the center of the magnetic field forces and fall in a second funnel installed behind. The metal is transported outward by a scraper chain conveyor and put together in a container. It has been presented, that the use of drums that are usually covered with over-band magnets, is excessive because in the latter the metal parts adhered to form sheet parts, sticking. With this the removal of synthetic material undesirably increases by the magnetic stripe. Likewise, small metal parts are not separated. The next transportation of the fraction is carried out by the transport snails, which force the material with a material transport speed of, for example, 0.51 m / sec. They loosen the material for the next tubular fall separator connected later (station 6) where the separation of non-magnetic heavy parts is carried out with the help of sub-pressure and the material flow is accelerated to 5 to 25 m / sec. Construction details of the tubular fall separator are shown in Figures 4 and 5. The heavy disturbance materials and the adhesions fall, here not shown, on the scraper chain conveyor, which accumulates the separated material and transports it to the container. In general, the mixed synthetic material remains, which by means of fans is pneumatically transported to the separation of paper. The air stream has a speed of, for example, 25m / sec. Depending on the damping silo of station 4.) which forms a storage station in the sense of the invention, it becomes clear that the velocity of the waste stream mixed between two neighboring stations is essentially constant, but the mixed waste is transported to the next station with a speed, which is greater than the speed, with which it has been transported to the station that is left behind, where the particle of the waste stream mixed with this in place on the way to the transport section to the next station, it undergoes an acceleration. Also transport elements connected intermediately, such as vibration elements, they can work with a speed, that is selected according to the process of increase. The basic principle is to equalize and accelerate the flow of material to cause the optimum possible separation of the disturbing materials. This happens because, the density of the current of the material decreases by the aforementioned acceleration of the particle. It should be noted that also the loosening snails used in some stations take care to give an equalization to the current of the material. The mixed waste material contains moisture and dirt, so that the separated particles tend to stick together. The particles tend more to stick, for example, because of sharp edges in the metal particles. Both the glues and the accumulation loosen in the loosening snails. In dependence on Figure IC, the separation of paper is represented schematically (station 7). In this step of the process, the part of the paper adhering to the mixed synthetic material must be released. For this purpose paper mills are provided, in which the material each time falls by means of a cyclonic separator. Inside the paper mill box, the fraction is shaken by the centrifugal force outward against a sieve basket. By means of a specially shaped paper separator, such as for example those described in German patent application 196 16 623.3, a high friction is additionally generated. The paper is divided into smaller particles, leaves through the sieve basket and is thus sucked by a paper suction blower and forced by a compression snail into a container. The highly viscous synthetic material remains inside the screen body and is transported by means of a suitable vane position of the rotor and by the underpressure of a material suction blower to another waiting or damping silo (station 8), which will be described in dependence with Figure 3. The heat produced by the friction also takes care of drying the fraction. Both fractions, synthetic material and paper, are separated in the cyclone separator from the transporting air. The process air is purified by means of a filtering apparatus - activated carbon (as station 17), and conducted outside. By means of a suction bell, a fan generates a sub-pressure in the silo, to avoid the formation of dust. Subsequently, another separation of heavy non-magnetic parts is carried out inside a tubular fall separator (station 9), which will be described in dependence on Figure 4 or Figure 5. The suction conduit in the tubular fall separator is adjusted to so that the heavy parts fall. The lighter fraction is dragged by the air stream and taken to the next procedural step. After passing the second tubular fall separation, the fraction of plastic or plastic has an average ash content, that is a fraction of inert material (coal residue) less than 4.5%. The compression of the mixed synthetic material is performed, as shown in FIG. ID schematically, in one or more agglomerators or compactors connected in parallel of a known type (station 10).

It is then comminuted to a specific grain size of, for example, 1.0 cm (station 11). The mixed plastic is also pneumatically driven to the agglomerators. Here the optimum fill height is regulated by means of vibration-limiting sensors or light limits. In the entrance funnel of a agglomerator they take care of shaking shafts of a coating or continuous loading of the inlet snail. In the agglomerator, the mixed synthetic material is prepared as a material capable of being treated in bulk with a specific weight of more than 300 g / 1. Particularities of the agglomerator are described in dependence of Figure 5. After this process step a compressed material is forced to a crushing (station ll). Cutting mills have an inlet nozzle for cooling the mill by supplying an air-water mixture, so as to avoid a strong plasticization of the material. This excludes obstructions due to a strong heating of the material. The aforementioned (central) fan for the drive is arranged between station 10 and station 11. It may be advantageous to introduce an air-water mixture in the form of a mist into the duct between the station 10 and the station 11 in order to plasticize the surface of the material coming out of the compactor and prevent the accumulation from appearing. The own cooling process is carried out, in any case, in the station 11, where due to the high speeds in the mill, a rapid succession of detachment - cutting - detachment takes place until the finally valid grain size of the material is obtained . Here the moisture content is regulated in such a way that no residual water is present in the agglomerate. This means approximately 20 to 40 1 of water per 500 kg of synthetic material or plastic. As shown in Figure 1E, the weighing (station 12) of the worked agglomerate takes place, where a shock balance is used, which is in itself known, and which has been seen as advantageous in dependence on the pneumatic transport of the material . Then take care once more of the separation of magnetic metals (station 13). The agglomerate then travels through a tilted, rotating sieve drum (station 14), where all the particles having a diameter smaller than 10 mm fall through the sieve. A fan makes the agglomerate fall into the funnel into the finished product silo. The particles that do not fall through the sieve are forced by the sieve drum in the outward inclined direction. This material is returned to the buffer silo that has been provided behind the compactor. A quality control (station 15) ensures that the guidelines are maintained in reference to the specifications of the product for agglomerates, for the evaluation of the raw material. In the silo units (station 16) dust filters and stirring devices are provided, which perform the extraction of the material by means of a horizontal snail in the direction of the silo. An appropriate plant control (station 18) takes impulsion and monitors the components of the plant and communicates if necessary, critical limit values before the season in which the disorder occurs. The procedure is carried out with a cross-process air stream, where the process air is only expelled after being purified (station 17). Figure 2 shows a damping silo, in which the material is accumulated from all the separators (shredder). The storage capacity of one such silos is, for example, 40 m 3. The silo consists of a box 200 in which the shredded mixed waste is introduced with the aid of chain scraper conveyors, in the figure schematically represented on the opening 210, through that opening 210. The shredded material then falls into the floor area of the box 200, where six extraction shells 230 mounted in parallel are installed. They cover the entire floor surface of the box 200 and act in such a way that bridging of the shredded material is prevented. So can the box, in case this is necessary, also empty completely. Against the outlet snails 230 a running snail 240 is displaced 90 °, which takes care of a uniform coating or load of the scraper chain conveyor. The number of rotations of the running snail 240 is somewhat lower than the number of revolutions of the extraction snails 230, in reference to the quantities transported, for example the number of rotations of the running snail 240 is 16 1 / min. that the number of rotations of an extraction shell 230 is 21 1 / min. Figure 3 shows a damping silo, in which the plastic fraction is accumulated. It also consists of a box 300, but to avoid the formation of bridges, it widens to the floor in a conical or trapezoidal manner - in the drawing not shown. The filling is monitored by a control of the filling state with vibration indicators behind the observation window 360. Additionally, two observation windows 350 allow an optical test of the filling state. The material of the synthetic fraction is introduced through an opening 310 in the box 300. A fan 340 ensures that there is a sub-pressure in the box 300, so as to prevent the formation of dust. The suctioned air enriched with plastic particles is led to loosening snails 330, which are also under sub-pressure. In the box 300 other extraction snails (not shown) are provided which force the synthetic material to the loosening snails 330. Figure 4 shows a longitudinal sectional view of a single drop tubular spacer according to the invention. Here a mass flow 5 is fluidized in a spiral conveyor 450 with spiral 451 and is unified and the mass flow 5 thus prepared is conducted by a supply support 410, whose longitudinal axis forms an angle of approximately 45 ° with the axis longitudinal of a separation tube 425, which runs vertically, to the separator tube 425. The angle may take another value, to vary the rate of entry of the mixture of material in the air stream. The air stream in the separator tube 425 runs vertically upwards and is generated by a fan (not shown). At the entrance to the separator tube 425, the material mixture finds the air stream, where an upward force acts on the individual and fluidized parts of the material mixture. The parts, which have a specific weight, which is below a predetermined value, are dragged into the air stream with an upwardly directed velocity. These light particles are conducted as mass flow 5 for further processing. The heavy parts that can not be driven upwards by the velocity by the forces made by the air current due to the high gravitational forces, reach a velocity directed downwards and are extracted as mass current 4. Such a tubular separator of The drop is provided for example in station 6. Figure 5 shows a longitudinal sectional view of a preferred tubular fall separator, which is provided for example in station 9. Here a mass flow of a mixture of material 5 is fluidized also first in a spiral conveyor 450 with spiral or helical spiral 451 and individualized and then by a feeding tube 410 is inserted in a separating pipe 420. Analogously to the tubular fall separator shown in Figure 4, the Heavy parts are removed with a mass flow 4. The light parts are accelerated vertically upwards and are driven along the transpo tubes rte 421, 422 and 423 as mass flow 5 for its subsequent processing. A fan 430 produces upward vertical current in the tube 423. In this way a sub-pressure is produced which in the tubes 422, 421 and 420 produces an air current in the direction described above. In addition, variable aperture fins 440 are provided to regulate the velocity of the air stream during separation. With open fins 440, the outside air is sucked, thus reducing the velocity of the air stream during separation. Due to the suction effect, no parts can come out through the open fins and cause a loss of material. The spiral conveyor 450 in both embodiments is sealed against the outside air, so that it can not reach the separation system uncontrollably by the suction effect. The distances between the spiral spiral 451 and the box are also kept small. It should be noted in this place that, besides the tubular fall separators shown in Figures 4 and 5, other geometrical arrangements are also possible, in addition the application locations of the tubular fall separators according to the invention can be freely selected, especially for example also the tubular fall separator shown in Figure 5 can be used in station 9 of the method described above. The tubular fall separators have been described to make their preferred application field clearer within a mixed waste processing procedure, but may find application in other uses, in which a separation of individual elements according to their weight should be carried out. specific. Furthermore, it should be noted that due to the high efficiency of the tubular fall separator according to the invention, it is also possible that the step of the method d), described above, separates the magnetic metal parts that are normally performed by a magnetic separator, can also disappear, if no additional separation of the magnetic metals is desired or if the process step d), in opposite position to the succession described can also be provided later in the tubular fall separators, where by reason of the already carried out previous separation of the process step d), the separation of magnetic metal parts from the mass flow 4 is more efficient than from the mass flow 5. Fig. 6 shows a longitudinal sectional view of an agglomerator. In a really built plant, six agglomerators are connected in parallel, for example. From the buffer silo of FIG. 3, the synthetic material mixed with the six agglomerators is pneumatically driven. Two vibration limit sensors regulate the optimum filling height. In the input funnel 500, the stirring axes 510 of a continuous coating of the input spiral 520 are taken care of, the rotational speed of the input spiral 520 is adjustable in a variable manner, for example in the range of 16.8 1 / min. up to 100 1 / min., the material fed from the input spiral 520 is guided in a manner known per se between two discs arranged in the agglomerate box 530 which are provided with exchangeable mixing strips. Here one disk is built as a stator disk and the other as a rotor disk. By means of an axially displaceable support bushing in the agglomerator box 530, the distance between the stator disk and the rotor disk is allowed to be adjusted. To avoid an overheating of the material, both discs are provided with cooling. For this, there are radial perforations up to 1 center of the disks, so that controlled water can be supplied to cool the disks, so that it does not enter a temperature zone in which the plastics material is too strong and the disks stick, in the temperature of the cooling water should not exceed 40 ° C. The characteristics of the invention presented in the description above in the drawings as well as in the claims, both individually and in the combination that wants to be essential for the materialization of the invention. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, property is claimed as contained in the following:

Claims (17)

1. REIVI ND I CAC I ONE S i.- Process for the processing of mixed waste for the operation of a processing plant that works by dry mechanical means in a continuous manner, which presents a multiplicity of successive processing stations linked each time by when less a transport section, at least with the steps in succession metal separation, separation by wind and retro-paper, between which other steps can be provided or which follow one another directly, procedure characterized in that the current of good material in the transition at the last transport section before the processing station, it undergoes an acceleration, so that the average real speed of the particles of the good material stream, in the last transport section and with that directly before the entrance to the station of metal separation, is less than directly before the entry into the The preparation of the subsequent separation, and this again is less than the average speed directly before the entry into the processing station for paper separation.
2. 2. Method according to claim 1, characterized in that the mixed waste stream is forced between two neighboring stations with essentially constant speed in the corresponding transport section.
3. 3. Method according to claim 1, characterized in that, in at least one of the stations, a deposit of the given material is kept pretreated for a certain time.
4. 4. - Method according to one of claims 1 to 3, for the processing of mixed waste that essentially consists of synthetic material or plastics, composite materials, paper-plastic, glass, metals, paper, cardboard and other materials for the continuous operation of a processing plant characterized in that it comprises the steps of: a) demeaning the mixed waste; b) intermediate storage of shredded mixed waste; c) uniform drive of mixed waste stored intermediately; d) separation of the magnetic metal parts; e) separation of non-magnetic parts from materials with a specific weight, which exceeds a determinable minimum specific weight; f) separation of paper, for example, from paper-plastic composite materials; g) intermediate storage of the fraction obtained from synthetic or plastic material; and h) agglomeration of the synthetic fraction.
5. 5. Method according to claim 4, characterized in that, after step g), step e) is repeated.
6. 6. Process according to claim 4, characterized in that: i) the synthetic material to be agglomerated is comminuted to a fixed grain size.
7. 7.- Procedure according to the claim 6, characterized in that, after step i), step d) is repeated.
8. 8. Method according to one of claims 4 to 7, characterized in that the material to be processed is pneumatically driven.
9. 9. Processing plant for carrying out the process according to one of claims 1 to 8, with: a) at least one separator or cutter for shredding the mixed waste; b) a first damping or waiting silo as a first storage station in which the shredded mixed waste is conducted from each of the separators, where the silo has a device for the uniform loading or covering of a transport impeller; c) at least one magnetic separator; d) at least one apparatus for the separation of non-magnetic parts from materials with a specific weight, which exceeds a specific minimum fixed weight; e) at least one device for separating paper from for example paper / plastic composite materials; f) a second buffer silo as a second storage station, in which the plastic fraction is accumulated from each of the paper separation devices; and g) at least one agglomerator for agglomerating the plastic or plastic fraction.
10. 10. - Processing plant according to claim 8, characterized in that it is connected to the buffer silo in which the plastic fraction accumulates at least one other device for the separation of non-magnetic parts from materials with a specific weight which exceeds a fixed minimum specific weight.
11. 11. Processing plant according to claim 9, characterized in that at least one agglomerate is subsequently connected to an apparatus for comminuting the agglomerate to a fixed grain size.
12. 12. - Processing plant according to claim 11, characterized in that at least one other magnetic separator is provided to which the crumbled agíomerate is driven.
13. 13. - Silo buffer or waiting for a processing plant that works according to the method according to one of claims 8, consisting of a box with at least one opening in the upper region of the box to introduce the material that has of intermediate storage and at least one withdrawal opening for the material, characterized in that in the floor area of the box a multiplicity of withdrawal snails is provided, where the removal snails are arranged in such a way that their effect sweeps the entire surface of the floor of the box, and at least one running snail is provided which forces the homogenized material through at least a part of the removal snails, so that at least one withdrawal opening removes a flow of uniform mass of the material.
14. 14. Damping silo according to claim 13, characterized in that the removal snails work with different rotational directions.
15. 15. Damping silo according to claim 13, characterized in that the withdrawal snails are placed parallel to each other and the running snail is placed rotated with respect to the removal snails 90 degrees.
16. 16. Damping silo for a processing plant, which works according to one of claims 1 to 8, consisting of a box with at least one opening in the upper region of the box, to introduce the material that has been intermediate storage and at least one removal opening for the material, characterized in that at least one release screw that is under pressure is provided for the material stored in the silo and a suction apparatus supplies air from the box to at least one loosening snail.
17. 17. Damping silo according to claim 16, characterized in that the box is widened towards the floor area in conical or trapezoidal form.