EP1474240B1 - Device for sorting waste slag from a waste incinerator and a method for the sorting - Google Patents
Device for sorting waste slag from a waste incinerator and a method for the sorting Download PDFInfo
- Publication number
- EP1474240B1 EP1474240B1 EP03739663A EP03739663A EP1474240B1 EP 1474240 B1 EP1474240 B1 EP 1474240B1 EP 03739663 A EP03739663 A EP 03739663A EP 03739663 A EP03739663 A EP 03739663A EP 1474240 B1 EP1474240 B1 EP 1474240B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slag
- waste
- belt conveyor
- waste slag
- sorting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002893 slag Substances 0.000 title claims abstract description 190
- 239000002699 waste material Substances 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004056 waste incineration Methods 0.000 claims abstract description 32
- 230000001747 exhibiting effect Effects 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 40
- 238000005406 washing Methods 0.000 claims description 39
- 230000032258 transport Effects 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000001311 chemical methods and process Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000012432 intermediate storage Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/12—Apparatus having only parallel elements
- B07B1/14—Roller screens
- B07B1/15—Roller screens using corrugated, grooved or ribbed rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/14—Details or accessories
- B07B13/16—Feed or discharge arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/01001—Sorting and classifying ashes or fly-ashes from the combustion chamber before further treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/01005—Mixing water to ash
Definitions
- the invention relates to an arrangement and a method for the first sorting of waste slag from a waste incineration furnace, for example in a district heating plant.
- First sorting is performed for the separation at an early stage of fine, non-magnetic pieces of waste slag from fine and coarse magnetic pieces of waste slag and coarse, non-magnetic pieces of waste slag prior to the subsequent recovery processes.
- Waste slag remains after the incineration of waste in a waste incineration furnace.
- the waste slag contains large quantities of metallic and non-metallic materials, which can be recovered with modern technology for re-use as raw materials, for example in steelworks, or as a filling material in building work.
- the metallic pieces of waste slag consist of everything from very small objects, such as nails, to larger metal objects, such as automobile silencers, gearboxes and body components.
- the waste slag is quenched with water, in conjunction with which fresh or wet slag is obtained.
- the quenching water initiates a chemical process in this way, in which ash and other impurities slowly become burnt onto the surfaces of the metallic pieces of waste slag. After storage for a time, a coating of ash and other particles of slag, which is very difficult to remove, will have formed on the metallic pieces of waste slag.
- vibrating screens and drum sieves are used among other things in conjunction with subsequent manual sorting to remove fine and coarse pieces of waste slag and to separate non-magnetic pieces of waste slag from magnetic pieces of waste slag prior to subsequent recovery processes (see WO8912609 ).
- a problem with today's previously disclosed sorting facilities is that the separation of fine, non-magnetic pieces of waste slag takes place at a relatively late stage in the sorting chain, because as a general rule the waste slag first passes through at least one coarse sieve. Early separation of the fine, non-magnetic pieces of waste slag is desirable from the point of view of handling, as this material can be transported away more rapidly and dealt with as a filling material in conjunction with building work, for example.
- Another problem with the previously disclosed technology is that it is not possible to process fresh or wet slag immediately after incineration in the above-mentioned previously disclosed sorting facilities, because the wet waste slag adheres to and blocks the screens and the drum sieves in the sorting facility.
- the waste slag thus requires to be kept in intermediate storage for a time, usually for about a month, to enable the quenching water to drain away and to give the waste slag a chance to dry out.
- a large proportion of the recovery potential is lost during intermediate storage, however, as a consequence of the aforementioned coating of ash and other slag products on the metallic pieces of waste slag becoming burnt on.
- the invention makes available an arrangement for the first sorting of waste slag from a waste incineration furnace, comprising a motor-driven roller grating with a number of rollers for the purpose of permitting fine pieces of waste slag to pass through essentially vertically and for the onward transport of coarse pieces of waste slag essentially horizontally, where the aforementioned roller grating exhibits an intake end and a discharge end;
- the waste slag is rinsed with water from a liquid washing device installed adjacent to the intake end of the second belt conveyor.
- the waste slag is rinsed with liquid from a liquid washing device installed adjacent to the discharge end of the roller grating.
- the waste slag is rinsed with liquid from a liquid washing device installed adjacent to the intake end of the second belt conveyor and the discharge end of the roller grating.
- Rinsing takes place preferably via one or more rinsing nozzles by means of a water pressure within the range of 2-20 bar, and preferably 5-10 bar.
- fine, non-magnetic pieces of waste slag are collected at a slag collection point situated essentially directly beneath the slag passage.
- fine, non-magnetic pieces of waste slag are collected and transported onwards on a third belt conveyor situated beneath the slag passage.
- the reference designation 1 is used generally to denote an arrangement for the first sorting of waste slag in accordance with a first embodiment of the invention.
- the waste slag consists of residual products from the incineration of waste in a waste incineration furnace (not shown) and contains ash mixed with metallic objects which have not melted in the course of incineration and non-metallic unburned objects such as gravel and concrete residues.
- the metallic pieces of waste slag consist of everything from very small objects such as nails, to larger metal objects such as automobile silencers, gearboxes and body components.
- the arrangement in accordance with the invention for sorting is situated with advantage in proximity to the waste incineration furnace, either directly adjacent to it or at a distance from it such that it is accessible to slag waste transport by lorry or other means of transport within one or a few hours after the waste slag has left the incineration furnace.
- the waste slag is quenched with water. This initiates a chemical process in which ash and other impurities slowly become burnt onto a coating on the surfaces of the pieces of metallic slag. After storage for a relatively short period, a coating of ash and other particles of slag, which is very difficult to remove, will have formed on the aforementioned pieces of metallic slag, for which reason rapid transport to the first sorting facility makes further processing easier.
- the waste slag is first fed onto a roller grating 2, as indicated by the arrow 3 on the right-hand side of Fig. 1 .
- Feeding can take place directly by unloading from a lorry or via a feed conveyor, which will be described later with reference to the alternative embodiment of the invention shown in Fig. 3 .
- the roller grating 2 is equipped with a number of rollers 4, which, in the illustrative example, are ten in number.
- the rollers 4 are supported parallel with one another about shafts 5.
- the rollers 4 are illustrated most clearly in the enlarged, cut-away side view in Fig. 2 , where it can also be clearly seen that the rollers 4 are provided with projecting carrier flanges 6.
- the carrier flanges 6 are executed in such a way that they convey the waste slag in the direction of feed of the roller grating 2, as indicated by the arrow 7.
- the rollers 4 are driven in synchronized fashion by a motor, not shown here, foe example via a chain transmission (not shown) in a previously disclosed fashion.
- the rollers 4 are also positioned at a distance from one another such that fine pieces of waste slag 8 pass essentially vertically between the rollers 4, while coarse pieces of waste slag 9, as a consequence of their coarse dimensions, are unable to pass between the rollers and are transported onwards horizontally on the roller grating 2 from its intake end 10 to its discharge end 11.
- fine pieces of waste slag is used here to denote objects whose greatest cross-sectional width amounts to 40 mm, while the expression coarse pieces of waste slag denotes objects whose cross-sectional width exceeds 40 mm. It must also be appreciated, however, that these dimensional details can vary upwards or downwards to a certain extent depending on the requirements that are set in respect of sorted material for recovery. Thus, for example, the aforementioned fine pieces of waste slag 8 can exhibit a maximum cross-sectional width of 50 mm, in conjunction with which coarse pieces of waste slag 9 consequently exhibit a cross-sectional width exceeding 50 mm.
- the discharge end 14 of the first belt conveyor 13 is, as can be appreciated from Figs. 1 and 2 , situated adjacent to the discharge end 11 of the roller grating 2 and directly beneath it.
- the vertical distance between the first belt conveyor 13 and the roller grating 2 is relatively small and corresponds essentially to the vertical thickness of the belt conveyor 13.
- the first belt conveyor 13 is equipped in a conventional fashion with an endless belt web 16, which runs around two rotating rollers 17 and 18.
- the first belt conveyor 13 is driven by an electric motor 19 connected to one of the rotating rollers 18, as illustrated in Fig. 1 .
- Each of the rotating rollers 17, 18 is mounted for this purpose about its own axle 21 and 22 in a longitudinal beam framework 20.
- a second belt conveyor 24 exhibits an intake end 25 situated beneath the discharge end 11 of the roller grating 2.
- the second belt conveyor 24 is so arranged in this way as to collect coarse pieces of waste slag 9, which fall from the discharge end 11 of the roller grating 2 via a chute 26 inclined downwards at an angle, which chute extends from the discharge end 11 of the roller grating 2 to a position immediately above the intake end 25 of the second belt conveyor 24.
- the intake end 25 of the second belt conveyor 24 is also situated at a distance from the discharge end of the first belt conveyor 13 such that a slag passage 27 for fine pieces of waste slag 8 is present between the discharge end of the first belt conveyor 13 and the intake end 25 of the second belt conveyor 24.
- the second belt conveyor 24 is conventionally constructed with an endless belt web 28, a beam framework 29 in which a rotating roller 30 is mounted at the intake end 25 by means of a shaft 31, and a rotating roller 32 is mounted at the discharge end 33 of the belt conveyor 24 by means of a shaft 34.
- the second belt conveyor 24 is equipped with a number of carrier projections 23 distributed along the endless belt web 28.
- the carrier projection 23 runs in a transverse direction across the width of the second belt conveyor 24 and as such extends at right angles to the plane of the Figures.
- the second belt conveyor 24 is driven by an electric motor 35 connected to the shaft 34 of the rotating roller 32, as can be appreciated from Figure 1 .
- the magnet 36 consists of a permanent magnet designed as an essentially solid jacket around the shaft 31, as may best be appreciated from Fig. 2 .
- the magnet 36 instead consists of an electromagnet.
- the three arrows 38 in Fig. 2 illustrate how the fine pieces of magnetic scrap 37 are attracted by the magnet 36 and are carried on the second belt conveyor 24, whereas fine, non-magnetic pieces of waste slag 39 fall unobstructed through the slag passage 27 and are collected at a slag collection point 40 situated essentially directly beneath the slag passage 27.
- a considerable advantage over previously disclosed technology is gained in this way, because the fine, non-magnetic pieces of waste slag 39 can be dealt with at a very early stage in the sorting procedure to permit their re-use, for example as a filling material in building work.
- the second belt conveyor 24 is inclined upwards at an angle ⁇ such that the discharge end 33 is situated at a higher level than the intake end 25.
- the angle ⁇ 18°.
- coarse pieces of waste slag 9 - both magnetic and non-magnetic - and fine pieces of magnetic scrap 37 are fed towards the discharge end 33 of the second belt conveyor 24, as indicated by the arrow 41.
- the rate of feed of the second belt conveyor 24 in this case exceeds the rates of feed of the rotating roller 2 and the first belt conveyor 13, in conjunction with which effective onward transport is achieved without the risk of accumulations of waste slag at the intake end 25 of the second belt conveyor 24.
- the objects 9, 37 then fall into a container 42, which is shown schematically in Fig. 1 .
- the container 42 in the illustrative embodiment is situated in a separate space 43, which is segregated from the slag collection point 40 by means of a dividing wall 44.
- the separate space 43 is also situated at a higher level than the slag collection point 40.
- a subsequent sorting facility not shown.
- Final sorting and separation of coarse, non-magnetic items of waste slag 9 and, as a rule, sorting of coarse, magnetic pieces of waste slag 9 and fine, magnetic pieces of waste slag 37 take place in the subsequent sorting facility, which is not shown here.
- the aforementioned subsequent sorting facility can be situated in the separate space 43, in which case the container 42 shown in Fig. 1 is accordingly replaced by the subsequent sorting facility.
- the waste slag is rinsed with liquid from a liquid washing device 45 installed adjacent to the intake end 25 of the second belt conveyor 24 and to the discharge end 11 of the roller grating 2.
- the liquid washing device 45 can be attached only adjacent to the intake end 25 of the second belt conveyor 24.
- the liquid washing device 45 can instead be attached only adjacent to the discharge end 11 of the roller grating 2.
- the liquid consists preferably of clean water, but as an alternative it can also contain cleaning additives of various kinds or may consist entirely of a cleaning agent.
- the liquid washing device 45 in the illustrative embodiment is equipped with four washing nozzles 46, via which liquid washing takes place at a pressure within the range 2-20 bar, and preferably 5-10 bar.
- the washing nozzles 46 are mounted on an elongated carrier arm 47, which is fixed or adjustably attached above the intake end 25 of the second belt conveyor 24 and the discharge end 11 of the roller grating 2.
- the washing nozzles are provided in the illustrative embodiment with a pressurized liquid via branch liquid lines 48 connected to a distribution unit 49, which in turn is connected to an incoming liquid line 50 from a liquid source, not shown here, with a water pump (also not shown). It must be noted here that the quantity of the washing nozzles 46 can be varied freely within the scope of the following Patent Claims.
- Liquid washing is illustrated schematically with broken lines 51 from the washing nozzles 46, which can be appreciated most clearly in the enlarged view in Fig. 2 . It can be appreciated in this case that the liquid washing is concentrated at the discharge end 11 of the roller grating 2, the intake end 25 of the second belt conveyor 24 and the interjacent chute 26. The coating of ash and other impurities that was deposited on the pieces of waste slag 8, 9 during the previous incineration is removed effectively during liquid washing. The fact that liquid washing also takes place for a distance up onto the second belt conveyor 24, as can be appreciated from the Figures, also means that the fine pieces of magnetic scrap 37 carried onto the second belt conveyor 24 by means of the magnet 36 are also washed.
- a third belt conveyor 52 is situated beneath the slag passage 27 for the onward transport of fine pieces of non-magnetic waste slag 39.
- the third belt conveyor 52 is arranged at right angles to the first belt conveyor 13.
- the third belt conveyor 52 in this way replaces the stationary slag collection point 40 in the previously described embodiment.
- feeding of the waste slag to the roller grating 2 takes place by means of an upward-angled feed belt conveyor 53.
- Angled lateral containment walls 54 enclose the feed belt conveyor 53 so that a greater volume of waste slag can be loaded onto the feed belt conveyor 53, as indicated by the arrow 55.
- the feed belt conveyor 53 like the second belt conveyor 13, is equipped with carrier projections 23 and is constructed around a beam framework 29.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
- Combined Means For Separation Of Solids (AREA)
- Gasification And Melting Of Waste (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Sorting Of Articles (AREA)
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Abstract
Description
- The invention relates to an arrangement and a method for the first sorting of waste slag from a waste incineration furnace, for example in a district heating plant. First sorting is performed for the separation at an early stage of fine, non-magnetic pieces of waste slag from fine and coarse magnetic pieces of waste slag and coarse, non-magnetic pieces of waste slag prior to the subsequent recovery processes.
- Waste slag remains after the incineration of waste in a waste incineration furnace. The waste slag contains large quantities of metallic and non-metallic materials, which can be recovered with modern technology for re-use as raw materials, for example in steelworks, or as a filling material in building work. The metallic pieces of waste slag consist of everything from very small objects, such as nails, to larger metal objects, such as automobile silencers, gearboxes and body components.
- Directly after incineration in the waste incineration furnace, the waste slag is quenched with water, in conjunction with which fresh or wet slag is obtained. The quenching water initiates a chemical process in this way, in which ash and other impurities slowly become burnt onto the surfaces of the metallic pieces of waste slag. After storage for a time, a coating of ash and other particles of slag, which is very difficult to remove, will have formed on the metallic pieces of waste slag.
- In accordance with previously disclosed technology, vibrating screens and drum sieves are used among other things in conjunction with subsequent manual sorting to remove fine and coarse pieces of waste slag and to separate non-magnetic pieces of waste slag from magnetic pieces of waste slag prior to subsequent recovery processes (see
WO8912609 - A problem with today's previously disclosed sorting facilities is that the separation of fine, non-magnetic pieces of waste slag takes place at a relatively late stage in the sorting chain, because as a general rule the waste slag first passes through at least one coarse sieve. Early separation of the fine, non-magnetic pieces of waste slag is desirable from the point of view of handling, as this material can be transported away more rapidly and dealt with as a filling material in conjunction with building work, for example.
- Another problem with the previously disclosed technology is that it is not possible to process fresh or wet slag immediately after incineration in the above-mentioned previously disclosed sorting facilities, because the wet waste slag adheres to and blocks the screens and the drum sieves in the sorting facility. The waste slag thus requires to be kept in intermediate storage for a time, usually for about a month, to enable the quenching water to drain away and to give the waste slag a chance to dry out. A large proportion of the recovery potential is lost during intermediate storage, however, as a consequence of the aforementioned coating of ash and other slag products on the metallic pieces of waste slag becoming burnt on. In order nevertheless to achieve an acceptable degree of purity of the recovered magnetic pieces of waste slag, considerable preparatory mechanical processing is required in a separate fragmentation facility to remove the coating before further recovery sorting can take place. A further disadvantage is that very strong, health-impairing dust generation occurs during this mechanical processing.
- The above-mentioned problems are solved in that the invention makes available an arrangement for the first sorting of waste slag from a waste incineration furnace, comprising a motor-driven roller grating with a number of rollers for the purpose of permitting fine pieces of waste slag to pass through essentially vertically and for the onward transport of coarse pieces of waste slag essentially horizontally, where the aforementioned roller grating exhibits an intake end and a discharge end;
- a first belt conveyor, situated beneath the roller grating, and so arranged as to collect fine pieces of waste slag falling through the roller grating and to transport these to a discharge end situated adjacent to the discharge end of the roller grating;
- a second belt conveyor,_exhibiting an intake end situated beneath the discharge end of the roller grating and so arranged as to collect coarse pieces of waste slag falling from the discharge end of the roller grating, where the intake end of the aforementioned second belt conveyor is also situated at a distance from the discharge end of the first belt conveyor such that a slag passage for fine pieces of waste slag is present between the discharge end of the first belt conveyor and the intake end of the second belt conveyor; and
- a rotating roller, situated at the intake end of the second belt conveyor, and equipped with a magnet so arranged as to attract fine pieces of magnetic scrap from the fine pieces of waste slag falling through the slag passage and to carry these to the second belt conveyor.
In one embodiment of the invention, a liquid washing device arranged for rinsing the waste slag is installed adjacent to the intake end of the second belt conveyor.
In a second embodiment of the invention, a corresponding liquid washing device is installed adjacent to the discharge end of the roller grating.
In a further embodiment of the invention, the liquid washing device is installed adjacent to the intake end of the second belt conveyor and the discharge end of the roller grating.
The liquid washing device preferably comprises one or more rinsing nozzles, through which liquid washing takes place by means of pressure within the range of 2-20 bar, and preferably 5-10 bar.
Also, in a favourable embodiment of the invention, the liquid washing device is situated above the intake end of the second belt conveyor and the discharge end of the roller grating.
In an appropriate embodiment, a chute for coarse items of waste slag extends from the discharge end of the roller grating to a position above the intake end of the second belt conveyor.
The magnet in the previously mentioned rotating roller is preferably a permanent magnet, which is executed as an essentially solid jacket on the rotating roller.
In an alternative embodiment, the magnet in the rotating roller consists of an electromagnet.
In an advantageous embodiment of the invention, the rate of feed of the second belt conveyor exceeds the rates of feed of the roller grating and the first belt conveyor.
The aforementioned fine pieces of waste slag preferably exhibit a greatest cross-sectional width of up to 50 mm, and preferably up to 40 mm.
The aforementioned coarse pieces of waste slag exhibit a cross-sectional width exceeding 40 mm.
In a favourable embodiment of the invention, a slag collection point for fine, non-magnetic pieces of waste slag is situated essentially directly beneath the slag passage.
In an alternative embodiment, a third belt conveyor is situated beneath the slag passage for the onward transport of fine, non-magnetic pieces of waste slag. This third belt conveyor is preferably arranged essentially at right angles to the first belt conveyor.
The invention also relates to a method for the first sorting of waste slag from a waste incineration furnace, where fine pieces of waste slag are initially separated from coarse pieces of waste slag by means of a motor-driven roller grating with a number of rollers together with an intake end and a discharge end, in conjunction with which the aforementioned fine pieces of waste slag pass essentially vertically through the roller grating, while coarse pieces of waste slag are transported onwards essentially horizontally on the roller grating to its discharge ends - the fine pieces of waste slag falling through the roller grating are collected by a first belt conveyor situated beneath the roller grating, which first belt conveyor then transports the fine pieces of waste slag to a discharge end of the first belt conveyor situated adjacent to the discharge end of the roller grating;
- in that the fine pieces of waste slag at the discharge end of the first belt conveyor are caused to fall into a slag passage created between the discharge end of the aforementioned first belt conveyor and an intake end on a second belt conveyor situated adjacent to the discharge end of the first belt conveyor; and
- in that fine, magnetic pieces of scrap are separated from the fine pieces of waste slag as they fall through the slag passage by means of a rotating roller provided with a magnet at the intake end of the second belt conveyor, which attracts the fine pieces of magnetic scrap and carries these onto the second belt conveyor, whereas fine, non-magnetic pieces of waste slag fall unhindered through the slag passage.
- In one embodiment of the method in accordance with the invention, the waste slag is rinsed with water from a liquid washing device installed adjacent to the intake end of the second belt conveyor.
- In another embodiment of the method in accordance with the invention, the waste slag is rinsed with liquid from a liquid washing device installed adjacent to the discharge end of the roller grating.
- In a further embodiment of the method in accordance with the invention, the waste slag is rinsed with liquid from a liquid washing device installed adjacent to the intake end of the second belt conveyor and the discharge end of the roller grating.
- Rinsing takes place preferably via one or more rinsing nozzles by means of a water pressure within the range of 2-20 bar, and preferably 5-10 bar.
- In a favourable embodiment of the method in accordance with the invention, fine, non-magnetic pieces of waste slag are collected at a slag collection point situated essentially directly beneath the slag passage.
- In an alternative embodiment of the method in accordance with the invention, fine, non-magnetic pieces of waste slag are collected and transported onwards on a third belt conveyor situated beneath the slag passage.
- Embodiments of the invention are described below in greater detail with reference to the accompanying drawings, in which:
- Fig. 1
- shows a schematic side view of an arrangement for the first sorting of waste slag in accordance with a first embodiment of the invention;
- Fig. 2
- shows an enlarged side view of the area around the slag passage between the first and the second belt conveyors; and
- Fig. 3
- shows a schematic side view of a second embodiment of the invention, where a third belt conveyor is situated beneath the slag passage for the onward transport of fine, non-magnetic pieces of waste slag, and where a feed belt conveyor is situated at the intake end of the roller grating.
- In
Fig. 1 thereference designation 1 is used generally to denote an arrangement for the first sorting of waste slag in accordance with a first embodiment of the invention. The waste slag consists of residual products from the incineration of waste in a waste incineration furnace (not shown) and contains ash mixed with metallic objects which have not melted in the course of incineration and non-metallic unburned objects such as gravel and concrete residues. The metallic pieces of waste slag consist of everything from very small objects such as nails, to larger metal objects such as automobile silencers, gearboxes and body components. - The arrangement in accordance with the invention for sorting is situated with advantage in proximity to the waste incineration furnace, either directly adjacent to it or at a distance from it such that it is accessible to slag waste transport by lorry or other means of transport within one or a few hours after the waste slag has left the incineration furnace. In conjunction with the removal of the waste slag from the waste incineration furnace, the waste slag is quenched with water. This initiates a chemical process in which ash and other impurities slowly become burnt onto a coating on the surfaces of the pieces of metallic slag. After storage for a relatively short period, a coating of ash and other particles of slag, which is very difficult to remove, will have formed on the aforementioned pieces of metallic slag, for which reason rapid transport to the first sorting facility makes further processing easier.
- The waste slag is first fed onto a roller grating 2, as indicated by the
arrow 3 on the right-hand side ofFig. 1 . Feeding can take place directly by unloading from a lorry or via a feed conveyor, which will be described later with reference to the alternative embodiment of the invention shown inFig. 3 . Theroller grating 2 is equipped with a number of rollers 4, which, in the illustrative example, are ten in number. The rollers 4 are supported parallel with one another aboutshafts 5. The rollers 4 are illustrated most clearly in the enlarged, cut-away side view inFig. 2 , where it can also be clearly seen that the rollers 4 are provided with projecting carrier flanges 6. The carrier flanges 6 are executed in such a way that they convey the waste slag in the direction of feed of the roller grating 2, as indicated by thearrow 7. The rollers 4 are driven in synchronized fashion by a motor, not shown here, foe example via a chain transmission (not shown) in a previously disclosed fashion. The rollers 4 are also positioned at a distance from one another such that fine pieces ofwaste slag 8 pass essentially vertically between the rollers 4, while coarse pieces ofwaste slag 9, as a consequence of their coarse dimensions, are unable to pass between the rollers and are transported onwards horizontally on the roller grating 2 from itsintake end 10 to itsdischarge end 11. The expression fine pieces of waste slag is used here to denote objects whose greatest cross-sectional width amounts to 40 mm, while the expression coarse pieces of waste slag denotes objects whose cross-sectional width exceeds 40 mm. It must also be appreciated, however, that these dimensional details can vary upwards or downwards to a certain extent depending on the requirements that are set in respect of sorted material for recovery. Thus, for example, the aforementioned fine pieces ofwaste slag 8 can exhibit a maximum cross-sectional width of 50 mm, in conjunction with which coarse pieces ofwaste slag 9 consequently exhibit a cross-sectional width exceeding 50 mm. - In the enlarged view in
Fig. 2 , it is clear how the fine pieces ofwaste slag 8 fall essentially vertically through the roller grating 2 in accordance with the downward-facingarrows 12. The fine pieces ofwaste slag 8 are then collected by afirst belt conveyor 13 situated beneath theroller grating 2. Thefirst belt conveyor 13 then transports the fine pieces ofwaste slag 8 to adischarge end 14 of the aforementionedfirst belt conveyor 13, as indicated by thearrow 15. - The
discharge end 14 of thefirst belt conveyor 13 is, as can be appreciated fromFigs. 1 and 2 , situated adjacent to the discharge end 11 of the roller grating 2 and directly beneath it. The vertical distance between thefirst belt conveyor 13 and the roller grating 2 is relatively small and corresponds essentially to the vertical thickness of thebelt conveyor 13. Thefirst belt conveyor 13 is equipped in a conventional fashion with anendless belt web 16, which runs around tworotating rollers first belt conveyor 13 is driven by anelectric motor 19 connected to one of therotating rollers 18, as illustrated inFig. 1 . Each of therotating rollers own axle longitudinal beam framework 20. - A
second belt conveyor 24 exhibits anintake end 25 situated beneath the discharge end 11 of theroller grating 2. Thesecond belt conveyor 24 is so arranged in this way as to collect coarse pieces ofwaste slag 9, which fall from the discharge end 11 of the roller grating 2 via achute 26 inclined downwards at an angle, which chute extends from the discharge end 11 of the roller grating 2 to a position immediately above theintake end 25 of thesecond belt conveyor 24. Theintake end 25 of thesecond belt conveyor 24 is also situated at a distance from the discharge end of thefirst belt conveyor 13 such that aslag passage 27 for fine pieces ofwaste slag 8 is present between the discharge end of thefirst belt conveyor 13 and theintake end 25 of thesecond belt conveyor 24. Like thefirst belt conveyor 13, thesecond belt conveyor 24 is conventionally constructed with anendless belt web 28, abeam framework 29 in which arotating roller 30 is mounted at theintake end 25 by means of ashaft 31, and arotating roller 32 is mounted at the discharge end 33 of thebelt conveyor 24 by means of ashaft 34. Appropriately, although not necessarily, thesecond belt conveyor 24 is equipped with a number ofcarrier projections 23 distributed along theendless belt web 28. Thecarrier projection 23 runs in a transverse direction across the width of thesecond belt conveyor 24 and as such extends at right angles to the plane of the Figures. Thesecond belt conveyor 24 is driven by anelectric motor 35 connected to theshaft 34 of therotating roller 32, as can be appreciated fromFigure 1 . - The rotating
roller 30, which is situated at theintake end 25 of thesecond belt conveyor 24, is also equipped with amagnet 36 so arranged as to attract fine pieces ofmagnetic scrap 37 from the fine pieces ofwaste slag 8 which fall through theslag passage 27, and to carry these on thesecond belt conveyor 24. In the illustrative embodiments, themagnet 36 consists of a permanent magnet designed as an essentially solid jacket around theshaft 31, as may best be appreciated fromFig. 2 . In an alternative embodiment of the invention, not shown here, themagnet 36 instead consists of an electromagnet. - The three
arrows 38 inFig. 2 illustrate how the fine pieces ofmagnetic scrap 37 are attracted by themagnet 36 and are carried on thesecond belt conveyor 24, whereas fine, non-magnetic pieces ofwaste slag 39 fall unobstructed through theslag passage 27 and are collected at aslag collection point 40 situated essentially directly beneath theslag passage 27. A considerable advantage over previously disclosed technology is gained in this way, because the fine, non-magnetic pieces ofwaste slag 39 can be dealt with at a very early stage in the sorting procedure to permit their re-use, for example as a filling material in building work. - It can be appreciated from
Fig. 1 that thesecond belt conveyor 24 is inclined upwards at an angle α such that thedischarge end 33 is situated at a higher level than theintake end 25. In the illustrative embodiment, the angle α = 18°. As can be appreciated from the Figure, coarse pieces of waste slag 9 - both magnetic and non-magnetic - and fine pieces ofmagnetic scrap 37 are fed towards the discharge end 33 of thesecond belt conveyor 24, as indicated by thearrow 41. The rate of feed of thesecond belt conveyor 24 in this case exceeds the rates of feed of therotating roller 2 and thefirst belt conveyor 13, in conjunction with which effective onward transport is achieved without the risk of accumulations of waste slag at theintake end 25 of thesecond belt conveyor 24. Theobjects container 42, which is shown schematically inFig. 1 . Thecontainer 42 in the illustrative embodiment is situated in aseparate space 43, which is segregated from theslag collection point 40 by means of a dividingwall 44. Theseparate space 43 is also situated at a higher level than theslag collection point 40. When thecontainer 42 is full, it is transported for further recovery sorting of theobjects waste slag 9 and, as a rule, sorting of coarse, magnetic pieces ofwaste slag 9 and fine, magnetic pieces ofwaste slag 37, take place in the subsequent sorting facility, which is not shown here. In an alternative embodiment of the invention, which is not shown here, the aforementioned subsequent sorting facility can be situated in theseparate space 43, in which case thecontainer 42 shown inFig. 1 is accordingly replaced by the subsequent sorting facility. - The waste slag is rinsed with liquid from a
liquid washing device 45 installed adjacent to theintake end 25 of thesecond belt conveyor 24 and to the discharge end 11 of theroller grating 2. In an alternative embodiment, not shown here, theliquid washing device 45 can be attached only adjacent to theintake end 25 of thesecond belt conveyor 24. In a further embodiment, theliquid washing device 45 can instead be attached only adjacent to the discharge end 11 of theroller grating 2. The liquid consists preferably of clean water, but as an alternative it can also contain cleaning additives of various kinds or may consist entirely of a cleaning agent. - The
liquid washing device 45 in the illustrative embodiment is equipped with fourwashing nozzles 46, via which liquid washing takes place at a pressure within the range 2-20 bar, and preferably 5-10 bar. The washing nozzles 46 are mounted on anelongated carrier arm 47, which is fixed or adjustably attached above theintake end 25 of thesecond belt conveyor 24 and the discharge end 11 of theroller grating 2. The washing nozzles are provided in the illustrative embodiment with a pressurized liquid viabranch liquid lines 48 connected to adistribution unit 49, which in turn is connected to anincoming liquid line 50 from a liquid source, not shown here, with a water pump (also not shown). It must be noted here that the quantity of thewashing nozzles 46 can be varied freely within the scope of the following Patent Claims. Liquid washing is illustrated schematically withbroken lines 51 from thewashing nozzles 46, which can be appreciated most clearly in the enlarged view inFig. 2 . It can be appreciated in this case that the liquid washing is concentrated at the discharge end 11 of the roller grating 2, theintake end 25 of thesecond belt conveyor 24 and theinterjacent chute 26. The coating of ash and other impurities that was deposited on the pieces ofwaste slag second belt conveyor 24, as can be appreciated from the Figures, also means that the fine pieces ofmagnetic scrap 37 carried onto thesecond belt conveyor 24 by means of themagnet 36 are also washed. All pieces ofwaste slag second belt conveyor 24, are thus essentially freed from the coating of ash and other impurities which is otherwise burned onto the surfaces of the objects by a chemical process after a certain time. In this way, the pieces ofwaste slag container 42 can be stored for a lengthy period, if required. Once the liquid has struck the piece ofwaste slag slag passage 27 and continues downwards to theslag collection point 40, together with the ash and other impurities that have been removed from the pieces ofwaste slag - Illustrated in
Fig. 3 , finally, is an alternative embodiment of the invention in which athird belt conveyor 52 is situated beneath theslag passage 27 for the onward transport of fine pieces ofnon-magnetic waste slag 39. Thethird belt conveyor 52 is arranged at right angles to thefirst belt conveyor 13. Thethird belt conveyor 52 in this way replaces the stationaryslag collection point 40 in the previously described embodiment. In the second embodiment, feeding of the waste slag to the roller grating 2 takes place by means of an upward-angledfeed belt conveyor 53. Angledlateral containment walls 54 enclose thefeed belt conveyor 53 so that a greater volume of waste slag can be loaded onto thefeed belt conveyor 53, as indicated by thearrow 55. Thefeed belt conveyor 53, like thesecond belt conveyor 13, is equipped withcarrier projections 23 and is constructed around abeam framework 29. - The invention is not restricted to the illustrative embodiments described above and shown in the drawings, but may be freely varied within the scope of the following Patent Claims. It must be noted that the cut-away Figures are executed in schematic form for the purpose of clarifying the function of the arrangement, for which reason the securing foundations, supports, etc., are omitted.
Claims (23)
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace, comprising a motor-driven roller grating (2) with a number of rollers (4) for the essentially vertical passage of fine pieces of waste slag (8) and for the essentially horizontal onward transport of coarse pieces of waste slag (9), where the aforementioned roller grating (2) exhibits an intake end (10) and a discharge end (11),- a first belt conveyor (13), situated beneath the roller grating (2) and so arranged as to collect fine pieces of waste slag (8) falling through the roller grating (2) and to transport these to a discharge end (14) situated adjacent to the discharge end of the roller grating (2);- a second belt conveyor (24), exhibiting an intake end (25) situated beneath the discharge end (11) of the roller grating (2) and so arranged in this way as to collect coarse pieces of waste slag (9) falling from the discharge end (11) of the roller grating (2), where the intake end (25) of the aforementioned second belt conveyor (24) is also situated at a distance from the discharge end (14) of the first belt conveyor (13) such that a slag passage (27) for fine pieces of waste slag (8) is present between the discharge end (14) of the first belt conveyor (13) and the intake end (25) of the second belt conveyor (24); and- a rotating roller (30) situated at the intake end (25) of the second belt conveyor (24) and equipped with a magnet (36) so arranged as to attract fine magnetic pieces of scrap (37) from the fine pieces of waste slag (8) as they fall through the slag passage (27) and to carry these onto the second belt conveyor (24).
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with Patent Claim 1, characterized in that a liquid washing device (45) arranged for washing the waste slag is installed adjacent to the intake end (25) of the second belt conveyor (24).
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with Patent Claim 1, characterized in that a liquid washing device (45) arranged for washing the waste slag is installed adjacent to the discharge end (11) of the roller grating (2).
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with Patent Claim 1, characterized in that a liquid washing device (45) arranged for washing the waste slag is installed adjacent to the intake end (25) of the second belt conveyor (24) and the discharge end (11) of the roller grating (2).
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with Patent Claims 2, 3 or 4, characterized in that the liquid washing device (45) comprises one or more washing nozzles (46) through which liquid washing takes place by means of a pressure within the range 2-20 bar, and preferably 5-10 bar.
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of Patent Claims 2 - 5, characterized in that the liquid washing device (45) is situated above the intake end (25) of the second belt conveyor (24) and the discharge end (11) of the roller grating (2).
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of the preceding Patent Claims, characterized in that a chute (26) for coarse items of waste slag (9) extends from the discharge end (11) of the roller grating (2) to a position above the intake end (25) of the second belt conveyor (24).
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of the preceding Patent Claims, characterized in that the magnet (36) in the rotating roller (30) is a permanent magnet.
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with Patent Claim 8, characterized in that the aforementioned magnet (36) is executed as an essentially solid jacket on the aforementioned rotating roller (30).
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of Patent Claims 1-7, characterized in that the magnet (36) in the rotating roller (30) is an electromagnet.
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of the preceding Patent Claims, characterized in that the rate of feed of the second belt conveyor (24) exceeds the rates of feed of the rotating roller (2) and the first belt conveyor (13).
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of the preceding Patent Claims, characterized in that the aforementioned fine pieces of waste slag (8) exhibit a greatest cross-sectional width of up to 50 mm, and preferably up to 40 mm.
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of the preceding Patent Claims, characterized in that the aforementioned coarse pieces of waste slag (9) exhibit a cross-sectional width exceeding 40 mm.
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of the preceding Patent Claims, characterized in that a slag collection point (40) for fine, non-magnetic pieces of waste slag (39) is situated essentially directly beneath the slag passage (27).
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of Patent Claims 1 - 13, characterized in that a third belt conveyor (52) is situated-beneath the slag passage (27) for the onward transport of fine, non-magnetic pieces of waste slag (39).
- Arrangement (1) for the first sorting of waste slag from a waste incineration furnace in accordance with Patent Claim 15, characterized in that the aforementioned third belt conveyor (52) is arranged essentially at right angles to the first belt conveyor (13).
- Method for the first sorting of waste slag from a waste incineration furnace, where fine pieces of waste slag (8) are initially separated from coarse pieces of waste slag (9) by means of a motor-driven roller grating (2) with a number of rollers (4) together with an intake end (10) and a discharge end (11), in conjunction with which the aforementioned fine pieces of waste slag (8) pass essentially vertically through the roller grating (2), while coarse pieces of waste slag (9) are transported onwards essentially horizontally on the roller grating (2) to its discharge end (11),- the fine pieces of waste slag (8) falling through the roller grating (2) are collected by a first belt conveyor (13) situated beneath the roller grating (2), which first belt conveyor (13) then transports the fine pieces of waste slag (8) to a discharge end (14) of the first belt conveyor (13) situated adjacent to the discharge end (11) of the roller grating (2);- the fine pieces of waste slag (8) at the discharge end (14) of the first belt conveyor (13) are caused to drop down into a slag passage (27) created between the discharge end (11) of the aforementioned first belt conveyor (13) and an intake end (25) on a second belt conveyor (24) situated adjacent to the discharge end (14) of the first belt conveyor (13); and- fine, magnetic pieces of scrap (37) are separated from the fine pieces of waste slag-(8) as they fall through the slag passage (27) by means of a rotating roller (30) provided with a magnet (36) at the intake end (25) of the second belt conveyor (24), which magnet attracts the fine pieces of magnetic scrap (37) and carries these onto the second belt conveyor (24), whereas fine, non-magnetic pieces of waste slag (39) fall unhindered through the slag passage (27).
- Method for the first sorting of waste slag from a waste incineration furnace in accordance with Patent Claim 17, characterized in that the waste slag is rinsed with water from a liquid washing device (45) installed adjacent to the intake end (25) of the second belt conveyor (24).
- Method for the first sorting of waste slag from a waste incineration furnace in accordance with Patent Claim 17, characterized in that the waste slag is rinsed with liquid from a liquid washing device (45) installed adjacent to the discharge end (11) of the roller grating (2).
- Method for the first sorting of waste slag from a waste incineration furnace in accordance with Patent Claim 17, characterized in that the waste slag is rinsed with liquid from a liquid washing device (45) installed adjacent to the intake end (25) of the second belt conveyor (24) and the discharge end (11) of the roller grating (2).
- Method for the first sorting of waste slag from a waste incineration furnace in accordance with Patent Claims 18, 19 or 20, characterized in that liquid washing takes place with one or more washing nozzles (46) by means of a pressure within the range of 2-20 bar, and preferably 5-10 bar.
- Method for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of the preceding Patent Claims, characterized in that fine, non-magnetic pieces of waste slag (39) are collected at a slag collection point (40) situated essentially directly beneath the slag passage (27).
- Method for the first sorting of waste slag from a waste incineration furnace in accordance with one or other of Patent Claims 17 - 22, characterized in that fine, non-magnetic pieces of waste slag (39) are collected and transported onwards on a third belt conveyor (52) situated beneath the slag passage (27).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0200431 | 2002-02-14 | ||
SE0200431A SE519274C2 (en) | 2002-02-14 | 2002-02-14 | Apparatus and method for pre-sorting slag waste from a waste incineration boiler |
PCT/SE2003/000234 WO2003068406A1 (en) | 2002-02-14 | 2003-02-13 | Device for sorting waste slag from a waste incinerator and a method for the sorting |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1474240A1 EP1474240A1 (en) | 2004-11-10 |
EP1474240B1 true EP1474240B1 (en) | 2009-07-08 |
Family
ID=20286959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03739663A Expired - Lifetime EP1474240B1 (en) | 2002-02-14 | 2003-02-13 | Device for sorting waste slag from a waste incinerator and a method for the sorting |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1474240B1 (en) |
AT (1) | ATE435703T1 (en) |
AU (1) | AU2003210084A1 (en) |
DE (1) | DE60328266D1 (en) |
DK (1) | DK1474240T3 (en) |
SE (1) | SE519274C2 (en) |
WO (1) | WO2003068406A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2013106406A1 (en) | 2012-01-09 | 2013-07-18 | Eriez Manufacturing Co. | Oversized material removal system and method |
SE541249C2 (en) * | 2016-12-05 | 2019-05-14 | Nilsson Bella | Method for cleaning waste |
NL2018787B1 (en) * | 2017-04-26 | 2018-11-05 | Heros Sluiskil B V | System comprising a homogenizer |
CN112676233B (en) * | 2020-12-23 | 2024-05-31 | 安徽省宁国市东波紧固件有限公司 | Circlip cleaning equipment |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2857437B2 (en) * | 1988-06-16 | 1999-02-17 | アセア・ブラウン・ボベリ・アクチエンゲゼルシヤフト | Method and apparatus for preparing slag from waste combustion furnace |
US5480034A (en) * | 1993-06-22 | 1996-01-02 | Kabushiki Kaisha Miike Tekkosho | Screening machine |
-
2002
- 2002-02-14 SE SE0200431A patent/SE519274C2/en unknown
-
2003
- 2003-02-13 DK DK03739663T patent/DK1474240T3/en active
- 2003-02-13 AT AT03739663T patent/ATE435703T1/en not_active IP Right Cessation
- 2003-02-13 DE DE60328266T patent/DE60328266D1/en not_active Expired - Lifetime
- 2003-02-13 AU AU2003210084A patent/AU2003210084A1/en not_active Abandoned
- 2003-02-13 EP EP03739663A patent/EP1474240B1/en not_active Expired - Lifetime
- 2003-02-13 WO PCT/SE2003/000234 patent/WO2003068406A1/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
WO2003068406A1 (en) | 2003-08-21 |
SE0200431L (en) | 2003-02-11 |
DE60328266D1 (en) | 2009-08-20 |
ATE435703T1 (en) | 2009-07-15 |
EP1474240A1 (en) | 2004-11-10 |
SE519274C2 (en) | 2003-02-11 |
DK1474240T3 (en) | 2009-11-16 |
SE0200431D0 (en) | 2002-02-14 |
AU2003210084A1 (en) | 2003-09-04 |
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