FR3107845A1 - Glass recycling process and plant - Google Patents

Abstract

Process and installation for recycling glass Process for recycling glass comprising: - a step (E1) of collecting a heap of debris containing used glass, the heap of debris coming from a first glass recycling process, then - a step (E2) of extracting floating particles present in the debris pile, - a step (E3) of washing the debris pile in a trommel (3), - a separation step (E4) the heap of debris in three separate lots according to their size, a first lot comprising debris whose dimension is less than or equal to a first threshold value, a second lot comprising debris whose dimension is strictly greater than the first threshold value and less than or equal to a second threshold value, a third batch comprising the debris, one dimension of which is strictly greater than the second threshold value. Figure for the abstract: figure 1

Description

Glass recycling process and plant

Technical field of the invention

The invention relates to a process for recycling glass. The invention also relates to a glass recycling installation capable of implementing such a glass recycling process.

State of the prior art

Glass containers such as bottles or jars are collected for recycling. Consumers therefore sort their waste and throw these glass containers into suitable collection devices. The glass thus collected is then taken to a recycling center where it is treated with a view to recycling it. The containers are crushed, cleaned and sorted. The glass thus recovered is then reused in a glass furnace for the manufacture of new glass containers.

A non-negligible proportion of the waste collected in the collection systems is nevertheless not recycled. This proportion forms a mass of debris containing glass but also all kinds of waste such as organic matter, and / or cellulosic material, and / or metallic elements, and / or ceramic, and / or particles. plastic and / or wood particles. The organic matter can be composed, for example, of food residues. The cellulosic material can include papers or labels. The metallic elements can include magnetic materials such as iron or paramagnetic materials such as aluminum. In some cases, the proportion of non-recycled waste can reach 30% by mass of the collected waste. This pile of debris is not valued and is generally simply buried in the ground.

In addition, the glass recycling processes known from the state of the art consume a lot of water. The environmental impact of the recycling process is therefore penalized by this high water consumption. There is therefore no process for efficiently recovering the debris resulting from a first recycling process.

Presentation of the invention

The aim of the invention is to provide a method for recycling glass and a plant for recycling glass which overcomes the above drawbacks and improves the methods and plant known from the prior art.

More specifically, a first object of the invention is a method and a glass recycling installation making it possible to increase the recycling rate of the glass collected.

A second object of the invention is a method and an installation for recycling glass making it possible to recover the debris other than the glass contained in a pile of debris.

A second object of the invention is a glass recycling process and plant which consumes little or no water at all.

The invention relates to a method for recycling glass comprising:
a step of collecting a heap of debris containing used glass, the heap of debris coming from a first glass recycling process, then
- a step of extracting floating particles present in the debris heap,
- a step of washing the heap of debris in a trommel,
- a step of separating the heap of debris into three distinct batches according to their size, a first batch comprising the debris whose dimension is less than or equal to a first threshold value, a second batch comprising the debris whose dimension is strictly greater than the first threshold value and less than or equal to a second threshold value, a third batch comprising the debris of which one dimension is strictly greater than the second threshold value,
- a cyclone washing step to extract organic matter from the first batch, then a step of extracting metal particles present in the first batch,
- a cyclone washing step to extract organic materials from the second batch, then a step of extracting metal particles present in the second batch,
- a step of extracting metal particles present in the third batch.

The step of extracting floating particles can be carried out before the step of washing the mass of debris. The debris pile washing step can be carried out before the step of separating the debris pile into three separate batches. The step of separating the mass of debris into three distinct batches can be carried out before the cyclone washing step to extract organic material from the first batch. The step of separating the mass of debris into three distinct batches can be carried out before the cyclone washing step to extract organic material from the second batch. The step of separating the mass of debris into three distinct batches can be carried out before the step of extracting metal particles present in the third batch.

The first threshold value can be set at a value between 2mm and 8mm inclusive, and / or the second threshold value can be set at a value between 9mm and 20mm inclusive.

The step of separating the heap of debris into three separate batches according to their size can be carried out by means of a vibrating screen with stages comprising two stages.

The step of extracting metal particles present in the first batch and / or in the second batch and / or in the third batch can comprise a step of extracting magnetic particles, in particular iron particles, by means of a overband and a step of extracting paramagnetic particles, in particular aluminum particles, by means of an eddy current separator.

The glass recycling process may include a step of extracting floating particles present in the third batch following the step of extracting metal particles present in the third batch.

The step of extracting floating particles present in the debris heap and / or the step of extracting floating particles present in the third batch can comprise:
- a first sub-step of immersing the third batch in a basin filled with water,
- a second sub-step of air emulsion from the bottom of the basin,
- a third sub-step of recovering the floating particles by a mechanical broom actuated on the surface of the basin.

The glass recycling process may include a step of vibrating draining the first batch, and / or the second batch, and / or the third batch.

The glass recycling process may include:
- a washing water collection step, then
- a stage of settling of the collected water, and
- a rainwater harvesting stage.

The glass recycling process can include a step of melting the glass in a glass furnace.

The invention also relates to a glass recycling installation comprising the hardware and / or software means making it possible to implement the recycling process as defined above.

The glass recycling facility may include:
- at least one hopper,
- a set of conveyors,
- a trommel,
- a vibrating screen with stages,
- an overband,
- an eddy current separator,
- a washing cyclone,
- a vibrating dish rack, and
- at least one means of separation by flotation.

Presentation of figures

These objects, characteristics and advantages of the present invention will be explained in detail in the following description of a particular embodiment made without limitation in relation to the accompanying figures, among which:

FIG. 1 is a schematic view of a glass recycling installation according to one embodiment of the invention.

Figure 2 is a three-dimensional view of a trommel of the installation.

FIG. 3 is a three-dimensional view of a vibrating screen with stages of the installation.

FIG. 4 is a three-dimensional view of a hydrocyclone of the installation.

FIG. 5 is a block diagram of the glass recycling process according to one embodiment of the invention.

FIG. 6 is a photograph of a pile of debris at the inlet of the glass recycling installation.

FIG. 7 is a photograph of glass particles obtained at the outlet of the glass recycling installation.

detailed description

FIG. 1 schematically illustrates a glass recycling installation 1 according to one embodiment of the invention. The glass recycling installation, also called "glass recycling center" or "glass recycling plant", is able to receive a heap of debris from a first glass recycling process with a view to extracting it. the remaining glass. The installation is therefore intended to be used as a relay for a first recycling center in which a large part of the glass collected in collection devices is already collected and recycled. Thus, the glass recycling installation is intended to collect at the input a heap of debris previously crushed by the first glass recycling center. The proportion of glass contained in a pile of debris reprocessed by the glass recycling installation 1 is therefore lower than the proportion of glass present in the collection devices. As explained previously, this pile of debris still contains glass but also organic material, and / or cellulosic material, and / or metallic elements, and / or ceramic, and / or plastic particles and / or wood particles.

The glass recycling installation comprises two hoppers 2A, 2B, a first means of separation by flotation 10A, a second means of separation by flotation 10B, a trommel 3, a vibrating screen with stages 4, three means for extracting particles metal 5A, 5B, 5C each comprising an overband 6 and an eddy current separator 7, two hydrocyclones 8A, 8B, two vibrating drainers 9A, 9B, and a third means of separation by flotation 10C. These various elements are interconnected by conveyors 11 which can be for example conveyor belts or endless screws.

The elements 2A, 2B, 3, 4, 5, 6, 7, 8, 9, 10A, 10B, 10C are arranged so that a given pile of debris can be loaded into the installation by the hoppers 2A, 2B. The outlet of a first hopper 2A is connected to the first flotation separation means 10A and, likewise, the outlet of the second hopper 2B is connected to the second flotation separation means 10B. The output of the two flotation separation means 10A, 10B is connected to the trommel 3 which is itself connected to the vibrating stage screen 4. The pile of debris is separated into three distinct batches in the vibrating stage screen 4. A first batch passes successively through the hydrocyclone 8A, the vibrating drip tray 9A and then through the means for extracting metal particles 5A. Likewise, a second batch passes successively through the hydrocyclone 8B, the vibrating drainer 9B and then through the means for extracting metal particles 5B. A third batch passes successively through the means for extracting metal particles 5C then through the third means for separation by flotation 10C. The installation therefore includes three outlets from which the glass debris initially present in the pile of debris loaded at the inlet is recovered. Between the inlet and the outlet of the installation, the debris is transported by the conveyors 11. These conveyors 11 can be equipped with vibrating means in order to equalize the height of the layer of debris circulating on these conveyors. The debris therefore passes through the installation 1 without leaving it and in particular without passing through a buffer stock. Furthermore, the glass recycling installation 1 further comprises a sludge settling tank 12 recovering the dirty water coming from the trommel 3, from the hydrocyclones 8A, 8B, and separation means by flotation 10A, 10B, 10C. The glass recycling installation 1 also comprises a water tank 13 connected to the sludge settling tank 12.

The installation presented macroscopically will now be presented in more detail.

The hoppers 2A, 2B are kinds of funnels into which piles of debris can be poured. The hoppers can for example have a capacity of 20m3. According to the embodiment presented, the installation comprises two hoppers adapted to two different sizes of debris. A first hopper 2A can be adapted to the collection of debris of any size, in particular debris of which a dimension can be up to 50mm. A second hopper can be adapted to collect smaller debris, for example debris with a dimension less than or equal to 3mm, 4mm or 5mm. The hoppers are preferably equipped with vibrators making it possible to promote the flow of debris towards their respective outlet. The frequency and or intensity of the vibrations produced by these vibrators can be adapted in order to adjust a debris flow rate at the outlet of the two hoppers. As a variant, the installation could include only a single hopper or any other number of hoppers.

The outlet of each of the two hoppers 2A, 2B is respectively connected to the first means of separation by flotation 10A and to the second means of separation by flotation 10B. These two means of separation by flotation 10A, 10B each comprise an immersion basin filled with water, an endless screw and a mechanical broom arranged to recover the floating particles from the basin. Each flotation separation means 10A, 10B may also include means for injecting air into a lower part of the basin, to produce an emulsion of air in the water of the basin. The air emulsion is used to separate or detach debris from one another and to facilitate the rise to the surface of floating particles. The floating particles can be collected by mechanical brooms and then stored in buckets 14 with a view to being sorted and recycled. The worms are arranged to bring out of the basin non-floating particles (including glass debris). The heap of debris freed from the floating particles then converges, via conveyors 11, towards a single inlet of the trommel 3.

The trommel 3 is shown in Figure 2. It comprises a generally cylindrical drum, movable in rotation about its axis of revolution. The drum may have a length of about 5 meters and a diameter of about 2 meters. One or more motors drives the trommel 3 in rotation around its axis of revolution. The trommel further includes a water inlet for mixing water with the debris it contains. The trommel acts like a washing machine. When the debris is mixed with water, the rotation of the trommel will wash the debris, including loosening sticky particles on the surface of the glass debris.

On leaving the trommel 3, the debris pile is conveyed to the vibrating screen with stages 4. The vibrating screen makes it possible to separate the pile of debris into three distinct batches according to their size. A first batch comprises the debris of which a dimension, or in other words a particle size, is less than or equal to a first threshold value. The first threshold value can be set at a value between 2mm and 8mm inclusive, preferably 3mm. A second batch comprises the debris, one dimension of which is strictly greater than the first threshold value and less than or equal to a second threshold value. The second threshold value can be set at a value between 9mm and 20mm inclusive, preferably 10mm. A third batch comprises the debris, one dimension of which is strictly greater than the second threshold value. On leaving the vibrating screen with stages, there are therefore three batches comprising debris of different size. As a side note, we can accept that the sorting is not perfect. An efficient recycling method according to the invention will also be able to function if a part of the debris is not affected in the batch corresponding to its size. The dimension of a particle can be defined as the largest dimension connecting two points of the particle. If a particle has a spherical shape, the size of this particle can therefore correspond to the diameter of this particle.

The vibrating sieve with stages 4 is shown in particular in FIG. 3. It comprises two stages each equipped with a sieve. The mesh size of the upper sieve is strictly larger than the mesh size of the lower sieve. The first batch is obtained by a first outlet 4A positioned below the lower screen. The second batch is obtained by a second outlet 4B positioned above the lower sieve and below the upper sieve. The third batch is obtained by a third outlet 4C positioned above the upper sieve.

The first outlet 4A and the second outlet 4B are respectively connected to the hydrocyclones 8A, 8B shown by way of example in FIG. 4. The hydrocyclone 8A, 8B, or washing cyclone, is a high pressure washing device. It separates glass particles present in the debris batch by centrifugal hydraulic classification. The hydrocyclone is a device that uses centrifugal force to separate different particles from a lot of debris based on their density. The hydrocyclone comprises a cylindrical-conical enclosure provided with a tangential supply inlet. A pump supplies the hydrocyclone with a mixture of water and a lot of debris. The glass particles are washed by water inside the enclosure. The glass particles then exit the enclosure through the overflow which is the widest opening at the top at the top of the cylindrical-conical enclosure. The water loaded with organic matter is evacuated through the tip of the enclosure, also called underflow. Thus, the hydrocyclone makes it possible to rid the glass particles of a layer of organic material or silt which surrounds them. The outlet of each hydrocyclone is connected to a vibrating drainer 9A, 9B. The various parameters making it possible to regulate the operation of the hydrocyclone are adjusted according to the size of the entering particles, for better efficiency.

The outlet of each vibrating drainer 9A, 9B is connected to a means for extracting metal particles 5A, 5B. Each means for extracting metal particles 5A, 5B comprises an overband 6 and an eddy current separator 7. The overband 6 comprises a fixed magnetic system located inside a frame around which an evacuation strip rotates. . It can be placed above a conveyor 11 and enables the magnetic particles, in particular the iron particles, to be removed from the conveyor. These iron particles can then be stored in a recovery bin for recycling. The eddy current separator 7 makes it possible to extract the paramagnetic particles, that is to say the non-ferrous metal particles (aluminum, zinc, copper ...) present in each batch. The eddy current separator 7 is able to generate a first magnetic field in the non-ferrous metal particles. This first magnetic field is used as a repellent, with the help of a second opposite magnetic field, at the end of the conveyor or conveyor belt of debris. These non-ferrous particles can also be stored in a recovery bin for recycling.

The third outlet 4C of the vibrating screen with stage 4C is connected directly to the means for extracting the particles 5C. The means for extracting the particles 5C comprises an overband 6 and an eddy current separator 7 as described above. The outlet of this particle extraction means 5C is connected to the third flotation separation means 10C. The various parameters making it possible to adjust the operation of the three means for extracting metal particles 5A, 5B, 5C are adjusted as a function of the size of the particles at the inlet, for better efficiency.

As previously, the third flotation separation means 10C comprises an immersion basin which can be filled with water. It also comprises a conveyor making it possible to bring out the particles submerged in this basin and a mechanical broom 15 making it possible to recover the particles floating in this basin. It also comprises an air injection means 16 in a lower part of the basin, to produce an emulsion of air in the water of the basin.

Optionally, the installation can also include one or more optical detection means configured to detect the presence of ceramic in the debris mass and / or to sort the glass debris according to their color. Advantageously, such a detection means is positioned at the end of the treatment line when the particles are cleaned.

As a variant of the installation which has just been described. Some resources could be pooled to process the different batches resulting from the vibrating stage screen. For example, the same hydrocyclone, used with different operating parameters, could be used to treat the first batch or the second batch alternately. Likewise, the same vibrating drip tray could be used to drain the debris from the two cyclones 8A, 8B. Likewise, the same means of extracting metal particles could be used with different parameters to treat the first batch, the second batch or the third batch. The steps presented sequentially and in the order defined by the block diagram of FIG. 5 could also be carried out in a different order. For example, steps E2 and E3 could be reversed. Steps E51, E52 and E53 could be performed in a different order. Likewise, steps E61, E62 and E63 could be performed in a different order. Likewise, steps E71 and E72 could be reversed.

Advantageously, the glass recycling installation may not include more equipment. Thus, its complexity is limited. However, according to an alternative embodiment, the installation could include a third hydrocyclone for treating the third batch resulting from the vibrating screen with stages.

The glass recycling installation 1 which has just been described comprises hardware and / or software means making it possible to implement a glass recycling process according to one embodiment of the invention. The operating method of the installation will now be described with reference to the block diagram illustrated in FIG. 5.

In a first step E1, a heap of debris containing used glass is collected, the heap of debris coming from a first glass recycling process. This mass of debris can for example be transported by truck from a first recycling center to the installation 1 where it can be poured into one of the hoppers 2A, 2B depending on its particle size. The debris goes down into the hopper and feeds the conveyors 11. As the pile of debris comes from a first glass recycling process, it is not useful to crush this debris.

In a second step E2, the floating particles such as wood or plastic present in the debris pile are extracted from the debris pile by means of the flotation separation means 10A, 10B. The pile of debris is plunged into the water basin. Floating particles remain on the surface of the basins while heavier particles (including glass particles) fall to the bottom of the basins. An air emulsion can be produced from the bottom of the basin with an air injection means to promote the separation of the different particles and thus help the floating particles to rise to the surface of the basin. The heavier particles then rise to the surface thanks to the endless screw. The floating particles are extracted from the basin using mechanical brushes.

In a third step E3, the heap of debris is washed in the trommel 3. Water is mixed with the heap of debris and the drum of the trommel is set in rotation. The mechanical action of water against the debris and / or debris against each other promotes the detachment of foreign particles stuck on the glass debris.

In a fourth step E4, the heap of debris is separated into three distinct batches according to their size, that is to say according to their particle size, using the vibrating screen at stage 4. The process then comprises three lanes. treatment for each of the three batches obtained.

For the first batch, that is to say the batch of which the debris has a dimension less than or equal to the first threshold value, the debris is washed by means of the hydrocyclone 8A in a first sub-step E51, then one drains the debris by means of the drip tray 9A in a second sub-step E52. Then, in a third sub-step E53, the metal particles are extracted with the metal particle extraction means 5A. This third sub-step can itself be divided into a first sub-step E531 for extracting the magnetic particles by means of the overband 6, and a second sub-step E532 for extracting the paramagnetic particles by means of the separator with eddy current 7.

For the second batch, that is to say the batch of which the debris has a dimension strictly greater than the first threshold value and less than or equal to the second threshold value, the debris is washed by means of the hydrocyclone 8B in a first sub-step E61, then the debris is drained by means of the drip tray 9B in a second sub-step E62. Then, in a third sub-step E63, the metal particles are extracted with the metal particle extraction means 5B. This third sub-step can itself be divided into a first sub-step E631 for extracting the magnetic particles by means of the overband 6, and a second sub-step E632 for extracting the paramagnetic particles by means of the separator with eddy current 7.

For the third batch, that is to say the batch of which the debris of which a dimension is strictly greater than the second threshold value, one begins by extracting the metal particles with the means for extracting metal particles 5C in a first sub -step E71. This first sub-step E71 can itself be divided into a first sub-step E711 for extracting the magnetic particles by means of the overband 6, and a second sub-step E712 for extracting the paramagnetic particles by means of the separator eddy current 7. Then, in a second sub-step E72, the floating particles present in the third batch are extracted again. More particularly, the sub-step E72 can be broken down into three sub-steps E721, E722, and E723. In a first sub-step E721, the third batch is immersed in the immersion basin of the third means of separation by flotation 10C. In a second sub-step E722, an air emulsion is produced from the bottom of the basin with the air injection means 16. The air emulsion helps to bring floating debris, in particular the floating debris, to the surface. plastic or wood debris. In a third sub-step E723, the mechanical broom 15 is actuated to recover the particles floating on the surface of the basin. The glass particles, which are heavier than water, can then be extracted from the basin via a conveyor starting from the bottom of the basin and going up out of the basin, such as an endless screw.

At the end of steps E53, E63 and E72, at the outlet of installation 1, three batches of glass particles are available, free of most of the particles other than glass which were initially present in the heap of debris. . The treatment of the debris heap with a separation into three distinct batches makes it possible to make the means used downstream of this separation more efficient. A better quality of treatment is obtained than in the absence of particle size sorting. The choice of three distinct batches appears to be the best compromise between the quality of the treatment and the complexity of the installation for treating glass debris from a first glass recycling process. Thus, a glass recycling plant is preferred in which the heap of debris is separated into three separate lots and no more. However, according to a more complex variant embodiment of the invention, a fourth batch or more batches could be envisaged.

The three batches thus cleaned up therefore have sufficient quality to be used directly in a glass furnace, in a ninth step E9. It is thus possible to produce new glass containers or products. These new glass products are therefore manufactured with a raw material initially not recovered and intended for landfill. Furthermore, the method according to the invention also makes it possible to save a burying step.

At the same time, particles foreign to the glass are also isolated according to their nature and can also be recovered. In particular, magnetic particles such as iron, and / or paramagnetic particles such as aluminum, and / or plastic particles, and / or wood particles are isolated.

FIGS. 6 and 7 respectively illustrate a photo of a pile of debris intended to be treated by the recycling process, and a set of glass particles obtained at the end of the recycling process. It is found that the glass particles are clean and free of most foreign particles.

According to another original aspect of the invention, the glass recycling process also comprises a first sub-step E81 for collecting the washing water. In particular, the soiled water from the flotation separation means is collected during steps E2 and E72, the soiled water from the trommel 3 during step E3, or the soiled water from the hydrocyclones during steps E51. and E61. This soiled water is poured into the sludge settling tank 12. In addition, the water coming from the vibrating drainers 9A and 9B could also be guided towards this same mud settling tank 12. In a second sub-step E82, the water is allowed to settle. soiled in the sludge settling tank for the time necessary for a flocculation phenomenon. Flocculation is the physicochemical process in which suspended matter in water clumps together to form larger particles. Then, clean water is collected from the sludge settler 12 and stored in a water tank 13 for further use in one of the hydrocyclones 8A, 8B.

The installation occupies a substantial floor area which can also be used to collect rainwater. In a third sub-step E83, the rainwater can be collected on the surface of the installation and conveyed to the water tank 13. It is thus possible to compensate for the water losses by infiltration or by evaporation and thus obtain a water-independent glass recycling facility. The glass recycling installation is therefore particularly ecological.

Claims (12)

Process for recycling glass, characterized in that it comprises:
- a step (E1) of collecting a heap of debris containing used glass, the heap of debris coming from a first glass recycling process, then
- a step (E2) of extracting floating particles present in the heap of debris,
- a step (E3) of washing the mass of debris in a trommel (3),
- a step (E4) of separating the heap of debris into three distinct batches according to their size, a first batch comprising the debris of which a dimension is less than or equal to a first threshold value, a second batch comprising the debris of which one dimension is strictly greater than the first threshold value and less than or equal to a second threshold value, a third batch comprising the debris one dimension of which is strictly greater than the second threshold value,
- a cyclone washing step (E51) to extract organic matter from the first batch, then a step (E53) for extracting metal particles present in the first batch,
- a cyclone washing step (E61) to extract organic matter from the second batch, then a step (E63) for extracting metal particles present in the second batch,
- a step (E71) of extracting metal particles present in the third batch.
Glass recycling process according to the preceding claim, characterized in that the step (E2) of extracting floating particles is carried out before the step (E3) of washing the mass of debris, in that the step (E3) washing of the debris heap is carried out before step (E4) of separating the heap of debris into three distinct batches, in that the step (E4) of separating the heap of debris into three batches separate is carried out before the cyclone washing step (E51) to extract organic matter from the first batch, in that the step (E4) of separating the debris mass into three distinct batches is carried out before the step ( E61) of cyclone washing to extract organic matter from the second batch, and in that step (E4) of separating the debris mass into three separate batches is carried out before step (E71) of extracting particles metal present in the third batch.
Glass recycling process according to one of the preceding claims, characterized in that the first threshold value is set at a value between 2mm and 8mm inclusive, and / or in that the second threshold value is set at a value between 9mm and 20mm included.
Glass recycling process according to one of the preceding claims, characterized in that the step (E4) of separating the heap of debris into three distinct batches according to their size is carried out by means of a vibrating screen with stages (4) comprising two floors.
Process for recycling glass according to one of the preceding claims, characterized in that the step (E53, E63, E71) of extracting metal particles present in the first batch and / or in the second batch and / or in the third batch comprises a step (E531, E631, E711) for extracting magnetic particles, in particular iron particles, by means of an overband (6) and a step (E532, E632, E712) for extracting paramagnetic particles , in particular of aluminum particles, by means of an eddy current separator (7).
Process for recycling glass according to one of the preceding claims, characterized in that it comprises a step (E72) of extracting floating particles present in the third batch following the step (E71) of extracting particles metal present in the third batch.
Glass recycling process according to the preceding claim, characterized in that the step (E2) of extracting floating particles present in the heap of debris and / or the step (E72) of extracting floating particles present in the third lot includes:
- a first sub-step (E721) of immersing the third batch in a basin filled with water,
- a second sub-step (E722) for emulsifying air from the bottom of the basin, and
- a third sub-step (E723) of recovering the floating particles by a mechanical broom actuated on the surface of the basin.
Process for recycling glass according to one of the preceding claims, characterized in that it comprises a step (E52, E62) of vibrating draining of the first batch, and / or of the second batch, and / or of the third batch.
Process for recycling glass according to one of the preceding claims, characterized in that it comprises:
- a step (E81) for collecting the washing water, then
- a step (E82) for settling the collected water, and
- a step (E83) for collecting rainwater.
Process for recycling glass according to one of the preceding claims, characterized in that it comprises a step (E9) of melting the glass in a glass furnace.
Glass recycling installation (1), characterized in that it comprises the material means (2, 3, 4, 5, 6, 7, 8, 9, 10A, 10B, 10C, 11) and / or software implementing implements the glass recycling process according to one of the preceding claims.
Glass recycling installation according to the preceding claim, characterized in that it comprises:
- at least one hopper (2),
- a set of conveyors (11),
- a trommel (3),
- a vibrating screen with stages (4),
- an overband (6),
- an eddy current separator (7),
- a washing cyclone (8A, 8B),
- a vibrating drip tray (9A, 9B), and
- at least one means of separation by flotation (10A, 10B, 10C).