MATERIAL SORTING APPARATUS

Abstract

A material sorting apparatus 100 for sorting materials in a material stream comprises: a material intake means 102 for receiving material that is input to the material sorting apparatus 100; at least one screening means 103 located downstream of the material intake means 102; at least one material separation means 104-106 located downstream of the material intake means 102; at least one conveyor means 107 for conveying material along a path within, around and/or proximal to the material sorting apparatus; and an elongate support means 101 adapted for supporting the material intake means 102, the at least one screening means 103, the at least one material separation means 104-106 and the at least one conveyor means 107.

Claims

1. A material sorting apparatus for sorting materials in a material stream, the material sorting apparatus comprising: a material intake means for receiving material that is input to the material sorting apparatus; at least one screening means located downstream of the material intake means: at least one material separation means located downstream of the material intake means; at least one conveyor means for conveying material along a path within, around and/or proximal to the material sorting apparatus; and an elongate support means adapted for supporting the material intake means, the at least one screening means, the at least one material separation means and the at least one conveyor means.

2. A material sorting apparatus as claimed in claim 1 wherein the support means comprises a single elongate chassis.

3. A material sorting apparatus as claimed in claim 1 or claim 2 wherein the material sorting apparatus does not include wheel arrangements such as wheels or integrally-formed wheel supports.

4. A material sorting apparatus as claimed in any preceding claim wherein the material sorting apparatus has a single configuration for transport and for use.

5. A material sorting apparatus as claimed in any preceding claim wherein the material intake means, the screening means, the at least one material separation means, and the support means are in fixed locations with respect to each other in transport and in use.

6. A material sorting apparatus as claimed in any preceding claim wherein the material sorting apparatus comprises one or more support legs.

7. A material sorting apparatus as claimed in claim 6, wherein the one or more support legs comprises one or more extendable support legs.

8. A material sorting apparatus as claimed in claim 6 or claim 7 wherein, in use, the support legs extend between the support means and the ground.

9. A material sorting apparatus as claimed in any preceding claim wherein the material intake means comprises a feed conveyor.

10. A material sorting apparatus as claimed in claim 9 wherein the material intake means comprises an inclined feed conveyor.

11. A material sorting apparatus as claimed in any preceding claim wherein the material intake means, the screening means and the material separation means are mechanically coupled to the support means.

12. A material sorting apparatus as claimed in claim 11 wherein, in use, the material intake means, the screening means and the material separation means are located on the upper side of the support means.

13. A material sorting apparatus as claimed in any preceding claim wherein the material sorting apparatus is located on, above and/or adjacent to one or more storage means.

14. A material sorting apparatus as claimed in claim 13 wherein one or more storage means are located below the material sorting apparatus.

15. A material sorting apparatus as claimed in claim 13 or claim 14 wherein the one or more storage means comprises one or more silos formed by one or more walls.

16. A material sorting apparatus as claimed in claim 15 wherein the support means is located on the one or more walls.

17. A material sorting apparatus as claimed in any preceding claim wherein the screening means comprises a trammel.

18. A material sorting apparatus as claimed in claim 17 wherein the trammel is adapted to separate multiple sizes of material from the material stream.

19. A material sorting apparatus as claimed in any preceding claim wherein the screening means comprises a primary screening means outlet for undersized material and/or fines.

20. A material sorting apparatus as claimed in claim 19 wherein the screening means comprises a secondary screening means outlet for the remaining material stream.

21. A material sorting apparatus as claimed in any preceding claim wherein the screening means is mechanically coupled to an upper side of the support means via suspension means such as one or more springs.

22. A material sorting apparatus as claimed in any preceding claim wherein the at least one material separation means comprises at least one air separator means.

23. A material sorting apparatus as claimed in any preceding claim 22 wherein the air separator means is adapted to separate low density/lighter material from other materials in a material stream.

24. A material sorting apparatus as claimed in claim 22 or claim 23 wherein the air separator means comprises an air-flow generation means.

25. A material sorting apparatus as claimed in any preceding claim wherein the air separator means is adapted to generate a flow of air towards and/or away from material in the material stream as said material passes out of the screening means.

26. A material sorting apparatus as claimed in claim 25 wherein the air-flow generation means comprises a fan or blower.

27. A material sorting apparatus as claimed in any one of claims 22 to 26 wherein the material sorting apparatus comprises an intermediate conveyor.

28. A material sorting apparatus as claimed in claim 27 wherein the intermediate conveyor is located generally below the air separator means, in use.

29. A material sorting apparatus as claimed in claim 27 or claim 28 wherein the intermediate conveyor is located between the screening means and the material separation means.

30. A material sorting apparatus as claimed in any preceding claim wherein the at least one material separation means comprises at least one picking station.

31. A material sorting apparatus as claimed in claim 30 wherein the at least one picking station is a multi-bay picking station.

32. A material sorting apparatus as claimed in claim 30 or claim 31 wherein the at least one picking station comprises a housing, a material entrance and an unpicked material exit, wherein the material entrance and the unpicked material exit are located in end walls of the housing.

33. A material sorting apparatus as claimed in claim 32 wherein the picking station comprises a picking station conveyor, the picking station conveyor being at least partially located within the housing.

34. A material sorting apparatus as claimed in claim 33 wherein the picking station conveyor is arranged to carry material through the material entrance and through the unpicked material exit.

35. A material sorting apparatus as claimed in any one of claims 30 to 34 wherein the picking station comprises one or more picked material exits for picked material to pass out of the picking station and into one or more storage means.

36. A material sorting apparatus as claimed in any preceding claim wherein the at least one material separation means comprises at least one magnetic separation means.

37. A material sorting apparatus as claimed in claim 36 wherein the at least one magnetic separation means is located above the picking station conveyor, in use.

38. A material sorting apparatus as claimed in any preceding claim wherein the magnetic separation means is located downstream from the manual picking station.

39. A material sorting apparatus as claimed in any preceding claim wherein magnetic/ferrous material is attracted towards the magnetic separation means, in use.

40. A material sorting apparatus as claimed in any preceding claim wherein the material sorting apparatus is a waste sorting apparatus.

41. A method of sorting materials in a material stream, the method comprising: providing a material sorting apparatus according to any preceding claim; and sorting materials in a material stream using the material sorting apparatus.

42. A method of sorting materials in a material stream according to claim 41, wherein the method comprises separating fines, soil, wood, metal, plastic and/or ferrous/magnetic material from a material stream.

Description

[0256] The invention will now be described with reference to the accompanying drawings which show, by way of example only, two embodiments of an apparatus in accordance with the invention.

[0257] FIG. 1 is a perspective view of a prior art material sorting apparatus.

[0258] FIG. 2 is a perspective view of a material sorting apparatus according to a first embodiment of the invention.

[0259] FIG. 3 is a perspective view of a material sorting apparatus according to a second embodiment of the invention.

[0260] FIG. 1 shows a prior art material sorting apparatus generally indicated by the numeral 1. The prior art material sorting apparatus 1 includes a number of standalone material separation stations including feeder 2, trommel 3, air separator 4, picking station 5 and magnetic separator 6. The stations are connected by conveyors 7a-c which allow a material in a material stream to be transported through the material sorting apparatus 1 for sorting.

[0261] As will be appreciated, the prior art material sorting apparatus 1 has a large footprint and a number of standalone stations that need to be transported to a site 10 separately and connected together to be used. The feeder 2, trammel 3, air separator 4, picking station 5 and magnetic separator 8 must all be separately transported to a site 10, accurately spaced together and aligned with the conveyors 7a-c, storage arrangements 8a-e,9 and walls 11 to allow the material sorting apparatus 1 to function properly. This requires significant time and skill on the part of the installer, and therefore this type of prior art material sorting apparatus 1 is typically permanently installed within a waste sorting facility.

[0262] In FIG. 2 there is shown a first embodiment of a material sorting apparatus according to the invention, generally indicated by the numeral 100. When deployed, the material sorting apparatus 100 is used to sort materials 50a-f in a material stream 50. The material sorting apparatus 100 comprises: a material intake arrangement 102; a plurality of material separation arrangements 103-106; a plurality of conveyors 102c,107a,107b for conveying material along paths within, around and/or proximal to the material sorting apparatus 100; and a support arrangement 101.

[0263] The support arrangement 101 is an elongate support arrangement 101. In the present example the support arrangement 101 is a unitary support arrangement 101. The support arrangement 101 is adapted to support the material sorting apparatus 100 during transport to site 1000 and also while it is being deployed, moved and/or used at a site 1000.

[0264] Each conveyor 102c,107a,107b is adapted to convey material towards, away from, between and/or within one or more of the material separation arrangements 103-106. In use, the material sorting apparatus 100 is located an and/or above one or more storage arrangements 110. In the example of FIG. 2, the material sorting apparatus is located on a plurality of walls 111 which form partially enclosed silos/storage bays 110a-110d. Particularly, the support arrangement 101 is located on the walls 111.

[0265] The material sorting apparatus 100 is optionally a waste sorting apparatus i.e. an apparatus for separating materials 50a-f in a waste stream 50. As will be appreciated, the present invention is not limited to waste sorting only and can be employed in many diverse situations where streams of mixed material are to be separated and sorted.

[0266] The material sorting apparatus 100 is semi-mobile in that it is transportable to and from a site 1000 via e.g. a crane or a heavy goods vehicle, truck or lorry. A crane can be coupled to the support arrangement 101 and then used to lift the material sorting apparatus 100 into place. The material sorting apparatus 100 can be easily manipulated since it is a standalone single piece and is not integral with or permanently attached to a vehicle such as a crane, heavy goods vehicle, truck or lorry. The material sorting apparatus 100 stays in place on a site 1000 because it does not include wheel arrangements such as wheels or integrally-formed wheel supports.

[0267] The material sorting apparatus 100 has a single configuration suitable for transport and use thereof. In other words, the material intake arrangement 102, at least one of the material separation stations 103-106, and the support arrangement 101 are consistently located with respect to each other during both transport and use of the material sorting apparatus 100. There being a single configuration means that the material sorting apparatus 100 can be configured off-site thereby reducing the complexity and set-up time during on-site deployment.

[0268] The material intake arrangement 102 comprises an entrance 102a for receiving material, for example mixed waste material from e.g. a building or domestic site, or any other material to be sorted. Material can be placed into the intake arrangement 102 via the entrance 102a using e.g. an excavator. The material intake arrangement 102 comprises an outlet arrangement 102b for allowing material placed into the intake arrangement 102 to move out of the material intake arrangement and towards the material separation arrangements 103-106. The outlet arrangement 102b is adapted to allow material to pass into the screening arrangement 103. The material intake arrangement 102 comprises an inclined feed conveyor 102c. The feed conveyor 102c is adapted to transport material in the material intake arrangement 102 towards the outlet arrangement 102b i.e. towards the exit of the material intake arrangement 102 and towards the screening arrangement 103.

[0269] The support arrangement 101 has an upper side 101b and a lower side 101c. The material intake arrangement 102 is mounted on the support arrangement 101, particularly on the upper side 101b of the support arrangement 101. The entrance 102a, the outlet arrangement 102b and the feed conveyor 102c are all located on a single side 101b of the support arrangement 101.

[0270] FIG. 2 shows that the material intake arrangement 102 is not located directly above a storage arrangement 110. The material intake arrangement 102 is rigidly attached or fixed to the support arrangement 101 via a mounting arrangement 101a. The mounting arrangement 101a comprises pillars 101a which are mechanically coupled or fixed to the material intake arrangement 102 and the support arrangement 101. The mechanical coupling/attachment is provided by attachment arrangements such as welded joints, springs and/or nuts and bolts.

[0271] The material sorting apparatus 100 comprises a trommel 103. The trommel 103 is located downstream from and proximally to the material intake arrangement 102, and upstream from the other material separation arrangements 104-106. As material passes out of the material intake arrangement 102, it passes into the trommel 103. The trommel 103 is adapted to separate undersized material or fines 50a from the material stream 50. The trommel 103 comprises a trommel entrance 103a through which material in the material stream can pass into the trommel 103. The trommel 103 comprises a primary outlet 103c for undersized material 50a. The undersized material 50a can be soil and/or fines and/or any other sized material that the trommel 103 is adapted to separate.

[0272] The primary outlet 103c is located underneath the trommel 103 in the view of FIG. 2, i.e. adjacent to the interface between the support arrangement 101 and the trommel 103. In use, undersized material 50a can pass through the primary outlet 103c and into a storage silo/bay 110a via a suitable aperture 101d in the support arrangement 101. The trommel 103 comprises a secondary outlet 103b for the remaining material stream 50 i.e. the material stream 50 after fines/soil/undersized particles/mid-sized particles have been removed. In optional embodiments the trammel 103 is adapted to separate multiple sizes of material from the material stream 50. In use, material is able to pass out of the trammel 103 via the secondary outlet 103b.

[0273] The trammel 103 comprises a housing 103d. The trammel 103, particularly the housing 103d thereof, is mounted directly on the support arrangement 101 on an upper side 101b of the support arrangement 101 via a mechanical coupling such as nuts and bolts, a suspension arrangement and/or welding. Inside the housing 103d there is located a rotating mesh through which small particles such as fines, soil, mid-sized material and/or undersized material can pass.

[0274] The material sorting apparatus 100 comprises an air separator 104. The air separator 104 comprises an air-flow generator in the form of a fan or blower 104. The air separator 104 is adapted to generate a flow of air proximally to the secondary outlet 103b of the trammel 103, towards material in the material stream as it falls out of the trammel 103 and onto inclined conveyor 107a.

[0275] The air separator 104 is adapted to separate low density/lighter material 50b from other materials in the material stream by providing a flow of air which directs such material towards a storage arrangement 110e via a chute 109a. The storage arrangement 110e is a skip and the gap between the chute 109a and the skip 110e is surrounded by a net 112 to stop the lighter material 50b from blowing away. The storage arrangement 110e may be a cage, bay or silo. As can be seen from FIG. 2, the air separator 104 is located downstream of the trammel 103 and upstream of the further material separation arrangements 105, 106. In this embodiment the air separator 104 is mechanically coupled to the support arrangement 101 indirectly via a frame 104a.

[0276] The material sorting apparatus 100 comprises an inclined conveyor 107a located between the trammel 103 and a manual picking station 105. The intermediate conveyor 107a is located 23 between the outlet 103b of the trammel 103 and an inlet 105a of the manual picking station 105 and is adapted to transport material from the output of the trammel 103 towards the manual picking station 105. The conveyor 107a is adapted to transport material not separated from the material stream by the air separator 104. The conveyor 107a is located generally below the air separator 104. The air separator 104 is adapted to generate a flow of air in a direction which is generally perpendicular to the major axis A and longest dimension of the material sorting apparatus 100.

[0277] The material sorting apparatus 100 comprises a manual picking station 105. The picking station 105 is a multi bay picking station, particularly a two-bay picking station located above storage bays 110b and 110c, in use. Inside the picking station 105 is one or more picking positions for manual picking of items in the material stream 50. The picking station 105 comprises a first picking position for manual picking of e.g. wooden items 50c in the material stream 50 and a second picking position for manual picking of e.g. plastic items 50d in the material stream 50. Operatives inside the picking station 105 can pick predetermined categories of items from a conveyor 107b which runs through the picking station 105, and deposit said picked items into the storage bays 110b and 110c through holes, chutes or apertures 105c,105d in the floor or walls of the picking station 105.

[0278] The picking station 105 comprises a housing 120 which is located oi, and mechanically coupled to, the support arrangement 101, particularly the upper side 101b of the support arrangement 101. The housing 120 comprises a roof 120a, two side walls 120b, two end walls 120c and a floor for supporting operatives stood next to the conveyor 107b at the picking positions. Operatives can enter the manual picking station 105 through a personnel access door located in one of the side or end walls. The personnel access door is accessible from the ground 1001 via a ladder 113 or in other embodiments a set of stairs or other means.

[0279] The picking station 105 comprises a material entrance 105a through which material can enter the picking station 105. The material entrance 105a is located in an end wall 120c of the housing 120. The picking station 105 comprises an unpicked material exit 105b through which unpicked material in the material stream can exit the picking station 105. The unpicked material exit 105b is located in an end wall 120c of the housing 120, particularly the end wall opposing that end wall in which the material entrance 105a is located. The picking station 105 comprises two sorted material exits 105c and 105d through which picked material (in this example, wood and plastic) can pass out of the picking station 105 and into the storage bays 110b. 110c. Each sorted material exit 105c, 105d is located in a side wall 120b or the floor of the housing 120.

[0280] The picking station 105 comprises a picking station conveyor 107b which passes through the picking station housing 120 from the material entrance 105a to the unpicked material exit 105b. The picking station conveyor 107b passes each picking position and is arranged to carry material out through the unpicked material exit 105b towards a terminal position 107c. A storage bay 110d is located beneath the terminal position 107c, in use, so that any material 50f which has not been separated from the material stream 50 falls into the storage bay 110d.

[0281] The material sorting apparatus 100 comprises a magnetic separator 106. The magnetic separator 106 is used to separate ferrous/magnetic material 50e from other material in the material stream 50. The magnetic separator 106 is located downstream from the manual picking station 105, upstream from the terminal position 107c of the picking station conveyor 107b and above the picking station conveyor 107b. The magnetic separator 106 comprises a frame 106c which is attached to the support arrangement 101 via attachment to an end wall 120c of the housing 120 of the manual picking station 105.

[0282] In use, magnetic/ferrous material 50e in the material stream, travelling on the conveyor 107b, is attracted towards the magnetic separator 106, which in this example is a ferromagnetic separator. The magnetic separator 106 comprises a rotating belt 106a which is adapted to carry magnetic/ferrous material away from the picking station conveyor 107b and towards chute 106b. The chute 106b is adapted to guide magnetic/ferrous material 50e towards a storage arrangement 110f. The storage arrangement 110f is a skip located underneath the outlet of the chute 106b.

[0283] Each material separation arrangement 103-106 is adapted for allowing at least one predetermined category of materials to be separated from the material stream 50. The material stream travels from the intake arrangement 102 towards the terminal position 107c. Upstream erections are towards the intake arrangement 102 and downstream directions are towards the terminal position 107c of the picking station conveyor 107b. In use, each material separation arrangement 103-106 is located generally above the storage arrangements 1108-f. Each storage arrangement 110 is adapted to store a different category of materials separated from the material stream 50, for further processing.

[0284] In the preferred embodiment the support arrangement 101 comprises a single elongate non-wheeled chassis 101 which is locatable on, above and/or adjacent to one or more storage arrangements 110 in use such that sorted material is able to pass out of the material sorting apparatus 100 and into the one or more storage arrangements 110.

[0285] The support arrangement 101 comprises an upper side 101b proximal to an upper surface, and a lower side 101c proximal to a lower surface. During operation, the upper surface is uppermost i.e. furthest away from the ground 1001. The material intake arrangement 102 and the material separation arrangements 103-106 are all located on the upper side 101b of the support arrangement 101. In other words, in use, the material intake arrangement 102 and the material separation arrangements 103-106 are all located above the support arrangement 101. The material intake arrangement 102 and each material separation arrangement 103-106 are mechanically coupled to the support arrangement 101. In use, the storage arrangements 110 are located generally below the support arrangement 101.

[0286] The support arrangement 101 comprises two substantially parallel elongate members 101e, connected together via cross members. The support arrangement 101 comprises a plurality of gaps, spaces or apertures 101d for allowing material to pass from the material separation arrangements 103 and 105, through the support arrangement 101 and into the storage arrangements 110a-110d under the force of gravity.

[0287] The operation of the material sorting apparatus 100 is as follows. The material sorting apparatus 100 is transported to a site 1000 where the walls 111 forming the storage bays 110a-d are already assembled. As will be appreciated, the material sorting apparatus 100 is transported to a site 1000 in a single assembly meaning that it does not have to be assembled or significantly re-configured on site 1000. This saves significant time. The material sorting apparatus 100 may be transported to a site 1000 using e.g. a lorry or other vehicle.

[0288] Once the material sorting apparatus 100 has reached site 1000, the material sorting apparatus 100 is lifted and placed onto the walls 111 such that the support arrangement 101 is located directly on the walls 111. The material sorting apparatus 100 may be lifted from a lorry and placed on the walls 111 using a crane, for example. The material sorting apparatus 100 is placed on the walls such that the support arrangement 111 makes contact with the walls 111. In use, the support arrangement 101 rests on the walls 111, particularly the top or uppermost surface 111a of the walls 111. The apertures/holes 101d for allowing sorted materials to pass out of the material separation arrangements 103-106 and through the support arrangement 101 are aligned with the storage bays 110a-d. Storage arrangements 110e and 110f are located beneath the respective chutes 109a,106b.

[0289] Once the material sorting apparatus 100 has been suitably arranged on the walls 111 and storage arrangements 110 have been suitably located beneath the respective chutes 109a,106b, the material sorting apparatus 100 can be used to sort material in a material stream 50. In use, material is input into the input arrangement 102 using e.g. a grabber or excavator arm. Inputted material is passed along the material sorting apparatus 100 through the trommel 103, the air separator 104, the manual picking station 105, and past the magnetic separator arrangement 106 for sorting.

[0290] In use, certain items of material will be removed from the material stream 50. A first category of material (e.g. soil/fines 50a) is removed by the trommel 103, a second category of material (e.g. low density/lights material 50b such as paper) is removed by the air separator 104, a third category of material (e.g. wooden items 50c) and a fourth category of material (e.g. plastic items 50d) are removed within the manual picking station 105, and a fifth category of material (e.g. magnetic/ferrous material 50e) is removed by the magnetic separator arrangement 106. Items that are removed/separated out from the material stream are placed in respective storage arrangements 110. Any remaining material 50f that has not been removed/separated out from the material stream (e.g. oversize material) will pass over the end 107c of the picking station conveyor 107b and will fall off the end of the conveyor 107b to be collected in storage arrangement 110d.

[0291] The direction of the material stream 50 through the material sorting apparatus 100 is substantially parallel to the major axis A of the material sorting apparatus 100. In the disclosed embodiments, the major axis A of the material sorting apparatus 100 is substantially parallel to the longest dimension of the material sorting apparatus 100 and the longest dimension of the support arrangement 101. The support arrangement 101 is elongate and extends along the major axis A of the material sorting apparatus 100. Configuring the material sorting apparatus 100 so that the direction of the material stream 50 through the material sorting apparatus 100 is along a substantially straight line results in a more compact system which is more easily transportable when compared with prior art systems.

[0292] Once material in the material stream 50 has been sorted and all of the material in the material stream has been separated into respective storage arrangements 110, the sorted material can be removed from the storage arrangements 110 and taken for further processing.

[0293] When sorting operations have been completed on site 1000 the material sorting apparatus 100 can be removed from the site 1000. The material sorting apparatus 100 can be lifted off the walls 111 by e.g. a crane and placed onto the back of a lorry or trailer for transport to another site. As will be appreciated, little or no reconfiguring of the apparatus 100 is required in order to remove the apparatus 100 from a site.

[0294] In FIG. 3 there is shown a second embodiment of a material sorting apparatus according to the invention, generally indicated by the numeral 200. When deployed, the material sorting apparatus 200 is used to sort materials in a material stream 50. The material soiling apparatus 200 is similar to the previous embodiment 100, with similar numerals denoting similar features, and can be used in a similar way to the previous embodiment.

[0295] The material sorting apparatus 200 comprises: a material intake arrangement 202 (similar to the material intake arrangement of the first embodiment 102); a plurality of material separation arrangements 203-206 (similar to the material separation arrangements of the first embodiment 103-106, respectively); a plurality of conveyors 202c,207a,207b (similar to the conveyors of the first embodiment 102c,107a,107b) for conveying material along paths within, around and/or proximal to the material sorting apparatus 200; and a support arrangement 201 (similar to the support arrangement of the first embodiment 101). The support arrangement 201 is an elongate support arrangement 201. In the present example the support arrangement 201 is a unitary support arrangement 201.

[0296] The support arrangement 201 is adapted to support the material sorting apparatus 200 during transport to site 2000 and also while it is being deployed, moved and/or used at a site. In the preferred embodiment the support arrangement 201 comprises a single elongate non-wheeled chassis 201 which is locatable on, above and/or adjacent to one or more storage arrangements 210 in use such that sorted material is able to pass out of the material sorting apparatus 200 and into the one or more storage arrangements 210.

[0297] The support arrangement 201 comprises an upper side 201b proximal to an upper surface, and a lower side 201c proximal to a lower surface. During operation, the upper surface is uppermost i.e. furthest away from the ground 2001. The material intake arrangement 202 and the material separation arrangements 203-206 are all located on the upper side 201b of the support arrangement 201. In other words, in use, the material intake arrangement 202 and the material separation arrangements 203-206 are all located above the support arrangement 201. The material intake arrangement 202 and each material separation arrangement 203-206 are mechanically coupled to the support arrangement 201. In use, the storage arrangements 210 are located generally below the support arrangement 201.

[0298] The support arrangement 201 comprises two substantially parallel elongate members 201e, connected together via cross members. The support arrangement 201 comprises a plurality of gaps, spaces or apertures 201d for allowing material to pass from the material separation arrangements 203 and 205, through the support arrangement 201 and into the storage arrangements 210a-210d under the force of gravity.

[0299] The material sorting apparatus 200 comprises a plurality of conveyors 207, each conveyor 207 being adapted to convey material between and/or within one or more of the material separation arrangements 203-206.

[0300] The material sorting apparatus 200 comprises one or more extendable support legs 213 which, in use, extend between the support arrangement 201 and the ground 2001. In this example the material sorting apparatus 200 comprises four support legs 213, which may be hydraulically powered. The support legs 213 are attached to the support arrangement 201 towards the distal ends of the support arrangement 201.

[0301] In use, the material sorting apparatus 200 is located above and/or adjacent to the one or more storage arrangements 210. In the example of FIG. 3, the material sorting apparatus 200 is located above a plurality of walls 211 which form partially enclosed silos/storage bays 210a and 210b. Particularly, the support arrangement 201 is located above and/or adjacent to the walls 211 whilst being supported by the support legs 213. Two removable storage containers 210c,210d are located in bay 210b beneath the manual picking station 205. As will be appreciated any number of bays and/or storage containers can be located in this region, as appropriate.

[0302] The material sorting apparatus 200 is optionally a waste sorting apparatus i.e. an apparatus for separating materials in a waste stream 50. As will be appreciated, the present invention is not limited to waste sorting only and can be employed in many diverse situations where streams of mixed material are to be separated and sorted.

[0303] The material sorting apparatus 200 is semi-mobile in that it is transportable to and from a site 2000 via e.g. a crane or a heavy goods vehicle, truck or lorry. A crane can be coupled to the support arrangement 201 and then used to lift the material sorting apparatus 200 into place. The material sorting apparatus 200 can be easily manipulated since it is a standalone single piece and is not integral with or permanently attached to a vehicle such as a crane, heavy goods vehicle, truck or lorry. The material sorting apparatus 200 stays in place because it does not include wheel arrangements such as wheels or integrally-formed wheel supports.

[0304] The material sorting apparatus 200 has a single configuration suitable for transport and use thereof. In other words, the material intake arrangement 202, at least one of the material separation stations 203-206, and the support arrangement 201 are consistently located with respect to each other during both transport and use of the material sorting apparatus 200. There being a single configuration means that the material sorting apparatus 200 can be configured off-site thereby reducing the complexity and set-up time during on-site deployment. Only the support legs 213 need to be deployed and/or configured at site 2000. The support legs 213 may be removable and/or stowable for transport.

[0305] The operation of the material sorting apparatus 200 is as follows. The material sorting apparatus 200 is transported to a site 2000 where material is to be sorted. As will be appreciated, the material sorting apparatus 200 is transported to a site 2000 in a single assembly meaning that it does not have to be assembled or significantly re-configured on site, saving significant time.

[0306] Once the material sorting apparatus 200 has reached site 2000, the material sorting apparatus 200 is lifted and the support legs 213 are deployed such that the walls partially enclosed silos/storage bays 210a and 210b are locatable underneath and/or adjacent to the material sorting apparatus 200. The support legs 213, which extend to the ground 2001, are able to fully support the material sorting apparatus 200, although walls and or/storage containers may be used to offer added support. The apertures/holes 201d for allowing sorted materials to pass out of the material separation arrangements 203-206 and through the support arrangement 201 are aligned with the storage bays 210a-b. Storage arrangements 210c-210f are located beneath the respective chutes and the manual picking station 205.

[0307] Once the material sorting apparatus 200 has been located at site 2000, the support legs 213 have been deployed and the storage arrangements 210c-f have been located suitably under the outputs of the sorting arrangements, the material sorting apparatus 200 may be used to sort material in a material stream 50. Material is input into the input arrangement 202 and passed along the material sorting apparatus 200 through the trommel 203, the air separator 204, the manual picking station 205, and past the magnetic separator arrangement 206 for sorting.

[0308] In use, certain items of material will be removed from the material stream. A first category of material (e.g. soil/fines 50a) is removed by the trommel 203, a second category of material (e.g. low density/lights material 50b such as paper) is removed by the air separator 204, a third category of material (e.g. wooden items 50c) and a fourth category of material (e.g. plastic items 50d) is removed within the manual picking station 205, and a fifth category of material (e.g. magnetic/ferrous material 50e) is removed by the magnetic separator arrangement 206. Items that are removed/separated out from the material stream are placed in respective storage arrangements 210. Any remaining material 50f that has not been removed/separated out from the material stream 50 (e.g. oversize material) will pass over the end 207c of the picking station conveyor 207b and will fall off the end of the conveyor 207b to be collected in e.g. a storage arrangement such as a storage area 210g.

[0309] The direction of the material stream 50 through the material sorting apparatus 200 is substantially parallel to the major axis A of the material sorting apparatus 200. In the disclosed embodiments, the major axis A of the material sorting apparatus 200 is substantially parallel to the longest dimension of the material sorting apparatus 200 and the longest dimension of the support arrangement 201. The support arrangement 201 is elongate and extends along the major axis A of the material sorting apparatus 200. Configuring the material sorting apparatus 200 so that the direction of the material stream through the material sorting apparatus 200 is along a substantially straight line results in a more compact system which is more easily transportable when compared with prior art systems.

[0310] Once material in the material stream 50 has been sorted and all of the material in the material stream 50 has been separated into respective storage arrangements 210, the sorted material can be removed from the storage arrangements 210 and taken for further processing.

[0311] When sorting operations have been completed on a site 2000 the material sorting apparatus 200 can be removed from the site 2000. The material sorting apparatus 200 can be lifted by e.g. a crane and the support legs 213 are retracted, removed and/or stowed for transport, as appropriate. The material sorting apparatus 200 is placed onto the back of a lorry or trailer for transport to another site. As will be appreciated, little or no reconfiguring of the apparatus 200 is required in order to remove the apparatus 200 from a site.

[0312] As will be understood by the skilled person, the example embodiments presented above can be modified in a number of ways without departing from the scope of the invention. For example, the material separation stations 103-106 and 203-206 can be arranged in any order most suited to the particular application. An important benefit of the apparatus lies in the fact that the material sorting apparatus is widely adaptablewhile the apparatus includes all of the essential components required in the most common sorting situations, more components can be added as necessary. Wheels and/or tracks may be attached to the apparatus 100,200, for example the support arrangement 101,201. Support legs 213 can be used with either embodiment.

[0313] The material sorting apparatus 100,200 may include a native source of electrical power, such as a generator, or be connectable to a source of electrical power, for powering one or more components thereof e.g. the conveyors, trommel, air separator or magnetic separator.

[0314] The material sorting arrangement 100,200 may include a screen such as a multi screen having multiple screens of different sizes instead of, or in addition to, the trommel 103,203. Any suitable air separator means 104,204 may be used, such as a cyclonic separator and/or an air flow generation means in the form of a vacuum source for sucking material. In alternatives the magnetic separation arrangement 106,206 may include use any other type of magnetic separator, such as an eddy current separator. The material sorting apparatus 100,200 may include any combination of an optical sorting means, a near infrared sorting means, and/or a robotic sorting means such as a robotic arm.

[0315] The manual picking station 105,205 may be of any suitable length and may have any suitable number of picking positions, chutes and sorted material exits. The picking station 105,205 may be a four-bay, six-bay or eight-bay picking station.

[0316] The material sorting apparatus 100,200 may include support legs in the form of hydraulically-powered support legs. The hydraulically-powered support legs may be attached to the support arrangement 101,201 and may be used to lift the apparatus 100,200 during installation at a site 1000,2000. For example, hydraulically-powered support legs may be used to lift the material sorting apparatus 100,200 clear from a lorry or trailer, and may lift the material sorting apparatus 100,200 to a suitable height such that storage arrangements 110,210 can be placed underneath the material sorting apparatus 100,200.

[0317] The material sorting apparatus 100,200 may additionally or alternatively include folding support legs at one end of the material sorting arrangement 100,200, for example beneath the material intake arrangement 102,202. The folding support legs may be pivotably attached to the support arrangement 101,201 at one end thereof. The folding support legs may be movable between a transport position in which the folding support legs are adjacent and parallel to the support arrangement 101,201, and a deployed position in which the folding support legs are perpendicular to the support arrangement 101,201. In the deployed position one end of each folding support leg will be in contact with the ground 1001,2001 and the other end will be in contact with the support arrangement 101,201.

[0318] The material sorting apparatus 100,200 may rest on walls 111, for example masonry walls or metal frames. The walls 111 may be temporary or permanent.

[0319] In the preceding discussion of the invention, unless stated to the contrary, the disclosure of alternative values for the upper or lower limit of the permitted range of a parameter, coupled with an indication that one of the values is more highly preferred than the other, is to be construed as an implied statement that each intermediate value of the parameter, lying between the more preferred and the less preferred of the alternatives, is itself preferred to the less preferred value and also to each value lying between the less preferred value and the intermediate value.

[0320] The features disclosed in the foregoing description or the following drawings, expressed in their specific forms or in terms of a means for performing a disclosed function, or a method or a process of attaining the disclosed result, as appropriate, may separately, or in any combination of such features be utilised for realising the invention in diverse forms thereof.