JP2018167208A - Treatment method for treatment object material - Google Patents

Abstract

To provide a treatment method for a treatment object material capable of increasing the recovery rate of an undersize material to be screened by a sorter and a vibration screening machine.SOLUTION: A treatment method for a treatment object material containing a collapsible block into which a granular material is solidified includes a step (S2) of obtaining an undersize material 2a containing a block by casting (S1) a treatment object material 2 into a sorter 6 to perform primary screening, a step (S3) of crushing the block contained in the undersize material 2a with a roll crusher 8 to perform secondary screening, a step (S4) of screening the granular material as combustion residue 10 by subjecting a roll crusher treated material 2b treated by the roll crusher 8 to a further secondary screening with a vibration screening machine 9, further, an oversize material 2c by a sorter 6 and a vibration oversize material 2d by the vibration screening machine 9 is treated with a magnetic separator 13 (S5).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a processing method of a processed object, and more specifically, a processed object capable of increasing the recovery rate of fine granular materials contained in a processed object incinerated industrial waste. It relates to the processing method.

  Various industrial wastes are generally incinerated, and the incinerated products after incineration have been disposed of in landfills in the past, but in recent years iron has been recovered from the incinerated materials, and fine-grained fuel shells are used as raw materials for cement. Reuse as is done. Specifically, the iron content contained in the incinerated product is collected by a magnetic separator, and the particle size obtained by further sieving with a sieving machine after removing masses such as casting and filter elements contained in the incinerated product. The finer shell is reused as a raw material for cement. Such incinerated waste treatment systems are disclosed in, for example, Patent Documents 1 and 2.

  A cylindrical rotary sorter (also referred to as a “trommel type sorter”) is known as an apparatus for separating a lump from a lump in the pretreatment of incineration. As shown in Patent Document 3, for example, a trommel type sorter is configured to include a cylindrical rotating drum having a large number of sieve holes perforated on one peripheral surface, and one end of the rotating drum. A charging port is provided on the side, a discharging port is provided on the opposite end side, and the charging port side is positioned so as to be higher than the discharging port side. Then, the granular material having a size smaller than the sieve hole is passed through the sieve hole by the rotating drum that rotates the incinerated material to be processed which is input from the inlet, and passes through the granular material and the sieve hole by dropping. It is a matter of sieving the lump that cannot be obtained. In addition, the size of the granular material to be sieved should be adjusted by forming the sieving holes in different sizes in stages, such as a small size on the upstream side close to the inlet side and a large size on the downstream side. Some have made it possible.

JP 2013-138975 A JP 2009-056362 A JP-A-10-272424

  In the trommel type sorter, the incinerated material is sorted into metals and fuel shells, and the sieved material is further passed through a vibrating sieve machine and sieved according to a reference value (for example, φ10 mm). A certain granular fuel shell is used as a raw material for cement. However, when the powdered fuel shell is solidified and presents as a large lump, it is sieved as a sieve top in a trommel type sorter, and the recovery rate of the fuel shell is not good. According to the study by the present inventors, the actual recovery rate of the incinerated material, which is expected to be at least about 65% as the recovery rate of the sieving material having a diameter of less than 10 mm, is less than 50%. In order to increase the amount of sieving material with a diameter of less than 10 mm, it is possible to improve to some extent by selecting the type of the sorter, but that alone does not satisfy the above recovery rate. Further, when trying to increase the size of the sieve sieve by increasing the diameter of the sieve hole of the sorter, there arises a disadvantage that the ratio of the metals that are originally sent to the magnetic separator is mixed into the sieve sieve increases.

  Therefore, the present invention provides a processing method for an object to be processed, which can increase the amount of sieving material in a sorting machine and a vibration sieving machine and increase the recovery rate of fine particles, and thus the recovery of fuel shells as a raw material for cement. The purpose is to provide.

  In order to solve the above-mentioned problems, the present invention according to claim 1 is characterized in that, in a processing method of an object to be processed including a collapsible aggregate in which a granular material is solidified, the mass is obtained by first sieving the object to be processed. A step of obtaining a sieving material containing a material, and a roll crusher for crushing the sieving material, wherein the lump material contained in the sieving material is crushed and a hard material such as a metal piece is rolled without being crushed. A step of treating the sieving material with a roll crusher that passes through the material, and a step of further sieving the material to be treated treated with the roll crusher to sieve the particulate matter. Provided is a method for processing a featured object.

  In order to solve the above-mentioned problem, the present invention described in claim 2 is the processing method for an object to be processed according to claim 1, wherein at least 80% or more of the object to be processed is an unsieved material in the primary sieving portion. It is characterized by sieving as follows.

  In order to solve the above-mentioned problem, the present invention described in claim 3 is the processing method of an object to be processed according to claim 1 or 2, wherein the primary sieving portion is a hollow cylindrical body arranged rotatably. A cylinder provided with a non-perforated portion without a sieve hole on the upstream side within a predetermined range from the inlet for feeding the workpiece, and a perforated portion having a plurality of sieve holes on the downstream side It is performed by a rotary sorter equipped with a body.

  In order to solve the above-mentioned problem, the present invention according to claim 4 is the processing method of an object to be processed according to claim 3, wherein the object to be processed is scraped up by a lifter provided in the non-hole portion. It is characterized by collapsing the said lump contained in a to-be-processed object.

  In order to solve the above-mentioned problem, the present invention according to claim 5 is the processing method of an object to be processed according to any one of claims 1 to 4, wherein the secondary sieving portion is placed on a vibrating sieve by a vibrating sieve. It is characterized by sieving into an article and a vibrating sieve.

  In order to solve the above-mentioned problem, the present invention according to claim 6 provides a method for treating an object to be treated according to any one of claims 1 to 5, wherein the first sieved product is sieved by the primary sieving. And the thing on the secondary sieve sieved by the said secondary sieving is further classified into a magnetic body (magnetic product) and others by a magnetic separator.

  In order to solve the above-mentioned problem, the present invention according to claim 7 is the processing method of an object to be processed according to any one of claims 1 to 6, wherein the object to be processed is an incineration residue of industrial waste. It is characterized by that.

  In order to solve the above-mentioned problem, the present invention described in claim 8 is the processing method of the object to be processed according to any one of claims 1 to 7, wherein the object to be processed is an incineration residue of industrial waste. The vibrating sieving material is used as a raw material for cement.

  According to the processing method of the to-be-processed object which concerns on this invention, it sorts so that the lump of the fuel shell which the granular material solidified may be contained in a sieving thing with a rotary sorter, Among them, collapsible masses with solidified fuel shells are crushed, but hard materials such as metal are selected with a roll crusher that passes without being crushed, and further sieved to obtain a sieve of a predetermined size or less. Since the lower article can be surely collected, there is an effect that the amount of collected particulate matter, that is, fine fuel shells can be increased. Thereby, there exists an effect that the recovery rate of the fuel shell as a raw material of cement can be increased from the incinerated material incinerated.

It is a block diagram of the processing system which enforces the processing method of the to-be-processed object which concerns on this invention. It is explanatory drawing which shows the outline | summary of the sorter and roll crusher of FIG. It is a front view of a sorter. It is a side view of the sorter shown in FIG. It is a perspective view which shows the principal part of a roll crusher. It is a flowchart of one Embodiment of the classification method of the to-be-processed object which concerns on this invention.

[Configuration of processing system]
The processing method of the to-be-processed object which concerns on this invention is demonstrated in detail, referring drawings below. FIG. 1 is a block diagram of a processing system that implements a processing method of an object to be processed according to the present invention. The illustrated processing system 1 generally includes a hopper 3 installed in a platform PF for receiving a workpiece 2 loaded on a transport vehicle T, and a workpiece 2 supplied via the hopper 3. Conveyors 4, 5 that convey in a predetermined direction, a sorter 6 that sorts the workpiece 2 conveyed by the conveyor 5, and a hopper 7 that accepts a workpiece of a predetermined size or less sorted by the sorter 6, A roll crusher 8 that crushes a collapsible lump that is solidified with a powdery substance such as a fuel shell contained in the under sieve 2a supplied from the hopper 7, but passes a hard piece such as a metal piece without crushing. And a roll crusher-treated product 2b containing a metal shell and the like that have been crushed by the roll crusher 8 and a metal piece that has not been crushed, and a sieve having a size less than the predetermined size of the fuel shell 10 A vibrating sieve 9, a conveyor 11 that conveys a sieved product 2 c of a predetermined size or larger selected by the sorting machine 6, a conveyor 12 that conveys a vibrating sieve 2 d of a prescribed size or larger by the vibrating sieve 9, Magnetic material (magnetic material) 15 such as iron scrap 16 and weak magnetic material (magnetic material) such as MIX metal 17 are magnetically applied to the sieve material 2c conveyed by the conveyor 11 and the vibrating sieve material 2d conveyed by the conveyor 12. ) 14 is configured to include a magnetic separator 13 for sorting. In FIG. 1, the conveyor 5 and the conveyor 12 are shown with a large inclination angle for the convenience of description of the drawings, but the actual inclination angle is not shown.

[Configuration of sorter]
Next, the sorter will be described with reference to FIG. 2 is an explanatory view showing an outline of the sorter and roll crusher of FIG. 1, FIG. 3 is a front view of the sorter, and FIG. 4 is a side view of the sorter shown in FIG. The sorter 6 is a so-called trommel type sorter, and includes a substantially cylindrical cylindrical body 60 having an inlet 61a for feeding the workpiece 2 and an outlet 60b for discharging the sieved material. The cylindrical body 60 generally includes a non-hole portion 62 without a sieve hole and a perforated portion 64 that is arranged so as to be continuous with the non-hole portion 62 and provided with a number of sieve holes 63 and 63. These are arranged so as to be able to rotate forward and backward using a motor or the like (not shown) as a power source. A large number of sieve holes 63 are formed at regular intervals on the entire circumferential surface of the perforated portion 64 serving as a sieve surface. In addition, although the shape of each sieve hole 63 and 63 is circular shape, it is not restricted to this.

  Further, as shown in FIGS. 3 and 4, a plurality (nine here) of the non-hole portion 62 are erected on the inner peripheral surface at predetermined intervals so that the top portion is directed toward the center side of the cylindrical body 60. ) Long plate-like lifters 65, 65 are provided. Further, a plurality of frame members 66, 66 made of U-shaped steel or the like are attached along the circumferential direction of the cylindrical body 60 as shown in FIG. The cylindrical body 60 is processed into a two-layered cylindrical shape of an outer layer 67a and an inner layer 67b with a metal material such as a steel plate having wear resistance, corrosion resistance, strength, etc. In this embodiment, Both the perforated part 64 and the non-perforated part 62 have the same length (for example, 120 cm). The perforated part 64 and the non-perforated part 62 are integrally connected by welding or the like so as to be formed by one rotating body. Further, the diameter size of the sieve holes 63, 63 provided in the perforated portion 64 is appropriately set according to the size of the workpiece 2 to be selected, but at least 80% or more of the workpiece 2 is sieved. It is preferable that the size is such that the product 2a is obtained. This is because the under sieve 2a is further processed by the roll crusher 8, so that only a relatively large one needs to be removed. In this embodiment, the diameter is 40 mm.

  On the other hand, the non-hole portion 62 is not formed with the sieve holes 63, 63, and the lifters 65, 65 are provided on the inner surface thereof as described above. The lifters 65, 65 are substantially triangular support plates 68. , 68 support one side. The to-be-processed object 2 thrown into the cylindrical body 60 is scraped up by the lifters 65, 65, and is appropriately stirred, whereby a collapsible mass in which the particulate matter contained in the to-be-processed object 2 is solidified, That is, the fine particles of the burned shell are solidified and collapsed, and the granular material adhering to the metal pieces etc. is shaken off and the granular material is sieved as a sieving material in the perforated part 64. At the same time, the lump can be sorted as a sieve. Furthermore, the cylindrical body 60 is positioned on the inlet 61a side above the outlet 61b side with respect to the horizontal direction, and is installed, for example, inclined at 3 to 10 °, and the workpiece 2 in the cylindrical body 60 is disposed. It is easy to flow down.

  Moreover, the frame members 66 and 66 are manufactured using, for example, U-shaped steel, and three pieces are used as a whole in this embodiment. The frame members 66 and 66 are disposed between the two layers of the cylindrical body 60 at intervals of 120 ° with respect to the rotation center. The lengths of the frame members 66 and 66 are slightly shorter than the length of the non-hole portion 62.

[Configuration of roll crusher]
Next, the roll crusher 8 will be described. FIG. 5 is a perspective view showing a main part of the roll crusher. The roll crusher 8 is arranged such that a pair of rotating cylindrical rollers 81a and 81b are opposed to each other in the main body 80, and the roll crusher 8 is processed by rotating the rollers 81a and 81b toward each other by a motor (not shown). This is an apparatus for crushing an object with rollers 81a and 81b. In this embodiment, the gap (gap) between the pair of rollers 81a and 81b of the roll crusher 8 can be adjusted to an appropriate size. In this embodiment, the gap between the rollers 81a and 81b is 6 mm. Protrusions (also referred to as “demon teeth”) 82 and 82 are provided in a predetermined length pattern on the outer surfaces of the rollers 81a and 81b to facilitate crushing the roll crusher processed product 2b. . The rollers 81a and 81b may have a configuration in which grooves are provided at regular intervals in the circumferential direction without providing the projections 82 and 82, or a configuration in which the roller surface is flat.

  On the other hand, the pair of rollers 81a and 81b of the roll crusher 8 pulverize those in which the fuel shell is solidified into a lump, but in the case of a hard material such as a metal piece, the rollers 81a and 81b are not pulverized. It is designed to pass through a gap between the two. That is, when an object with high hardness is introduced, either one or both of the rollers 81a and 81b are moved away from each other so as to pass as they are. Thereby, although the thing which the fuel shell solidified and became a lump is grind | pulverized, in the case of a hard thing like a metal piece, it can pass as it is, without grind | pulverizing.

[Configuration of vibrating sieve]
The vibration sieving machine 9 separates the roll crusher processed product 2b including the fuel shell crushed by the roll crusher 8 and the metal pieces that have not been crushed, into a crushed shell 10 having a size smaller than a predetermined size and a larger size by vibration. . In the present embodiment, the mesh size of the vibration sieve 9 is φ10 mm, and the sieve top is sieved as φ10 mm or more and the sieve bottom is less than φ10 mm.

[Configuration of magnetic separator 13]
The magnetic separator 13 is a device that separates the ferromagnetic product 15 and the weak magnetic product 14 by magnetic force. The sieve top 2c sieved by the sorting machine 6 and the vibratory sieve top 2d sieved by the vibration sieve 9 are magnetized to weaken ferromagnetic products (magnetic material) 15 such as iron scrap 16 and MIX metal 17 etc. Sort into magnetic product (magnetic material) 14.

[Processing method of workpieces]
Next, the processing method of the to-be-processed object which concerns on this invention is demonstrated, referring each figure. FIG. 6 is a flowchart of an embodiment of the method for separating objects to be processed according to the present invention. In the following, the screen of the sorter 6 is φ40 mm or more and the screen is less than φ40 mm. Further, the sieve top by the vibration sieve 9 is φ10 mm or more, and the sieve bottom is less than φ10 mm.

  First, when the truck T loaded with the workpiece 2 reaches the platform PF, the workpiece 2 is transferred to the hopper 3. And the to-be-processed object 2 is transferred to the conveyors 4 and 5 via the hopper 3, and is thrown into the sorter 6 (step S1).

  In the sorter 6, temporary sieving of the workpiece 2 with a diameter of less than φ40 mm (= trommel under) and φ40 mm or more (= trommel over) of the workpiece 2 is performed according to a preset hole size of the perforated portion 64 (step S <b> 2). . The workpiece 2 put into the non-hole portion 62 of the sorter 6 is appropriately stirred by lifters 65 and 65 provided in the non-hole portion 62 by the rotation of the cylindrical body 60. At this time, the collapsible lump obtained by solidifying the powder is also crushed appropriately. And the to-be-processed object 2 gradually flows down in the cylinder 60 toward the discharge port 61b side while being rotated and stirred by the lifters 65, 65, and eventually reaches the perforated portion 64. In the process of passing through the perforated portion 64, the workpiece 2 has a sieve 2a having a size smaller than the diameter of the sieve holes 63 and 63 and a sieve having a size larger than the diameter of the sieve holes 63 and 63 as shown in FIG. The upper product 2c is sieved (temporary sieving). The under sieve 2a falls to the hopper 7, and the over sieve 2c is discharged from the discharge port 61b and transferred to the conveyor 11. In addition, since the hole size of the perforated portion 64 is 40 mm, a collapsible lump that is solidified as a powdery substance that becomes the sieved product 2c in the past increases the ratio of sieving as the sieved product 2a.

  The under sieve 2a having a diameter of less than 40 mm collected by the sorter 6 to the hopper 7 is put into the roll crusher 8 and crushed (step S3). Next, the roll crusher processed product 2b processed by the roll crusher 8 is further selected by the vibration sieve 9 based on the secondary sieving, that is, φ10 mm (step S4). Of the roll crusher processed product 2b, the fuel shell 10 having a diameter of less than 10 mm is made into a fuel shell product and shipped as a raw material for cement. On the other hand, the vibrating sieve top 2d of φ10 mm or more is sent to the magnetic separator 13 by the conveyor 12 (step S4: φ10 mm or more). Further, the sieve top 2c sieved by the sorter 6 in step S2 is also sent to the magnetic separator 13 (step S2: φ40 mm or more), and magnetic separation processing is performed (step S5). The magnetic separator 13 selects the weak magnetic product 14 and the ferromagnetic product 15. The ferromagnetic product 15 is recovered as iron scrap 16 and the weak magnetic product 14 is recovered as a mixed metal (MIX metal) 17. In this embodiment, the sieving by the sorter 6 is based on φ40 mm, and the sieving by the vibration sieve 9 is based on φ10 mm. However, the situation of the workpiece 2 and the required size of the fuel shell product 10 It can change suitably according to etc.

  Next, Table 1 shows the results of Examples and Comparative Examples of the present invention. In the embodiment, the above-described processing is performed. That is, the roll crusher processed product 2b obtained by treating the sieve 6 of the sorter 6 with φ40 mm or more and the sieve under less than φ40 mm and treating the sieve 2a with the sorter 6 with the roll crusher 8 is sieved with the vibration sieve 9 Is sieved to φ10 mm or more, and the sieve below is sieved to less than φ10 mm. On the other hand, in the comparative example, the sieve 6 of the sorter 6 has a diameter of 30 mm or more and the sieve below the diameter of less than 30 mm. As described above, the sieve is sieved to less than 10 mm. As can be seen from Table 1, in the examples, when the input amount of the object to be processed is 100, the recovery rate of the sieved material by the vibrating sieve 9, that is, the fuel shell product is 48% of the comparative example. It increased greatly to 80%. Further, in the examples, 89% of the object to be treated is sieved as a sieving material 2a by temporary sieving, but in the comparative example, only 59% is sieved, and the recovery rate of the final fuel shell product However, it is only 48%.

  Thus, according to the processing method of the to-be-processed object which concerns on this invention, it sifts by the sorter 6 so that the collapsible lump which the granular material contained in the to-be-processed object 2 solidified becomes a sieve. Then, this under sieve 2a is crushed with a roll crusher 8, and the roll crusher processed product 2b is further subjected to secondary sieving with a vibration sieve 9 to obtain a fuel shell 10 of less than a predetermined size (for example, less than φ10 mm) as a raw material for cement. There is an effect that it is possible to increase the recovery rate when recovered as a fuel shell product.

  As described above, the preferred embodiment of the present invention has been described in detail. However, the present invention is not limited to the specific embodiment, and within the scope of the gist of the present invention described in the claims, Needless to say, various modifications and changes are possible.

  In the embodiment described above, industrial waste containing a large amount of metal as the object to be processed is targeted, but other waste including rod-like linear bodies, for example, crushed metal, contaminated soil, gravel crushed stone, incineration ash The present invention can also be applied to the purpose of removing foreign matters.

DESCRIPTION OF SYMBOLS 1 Processing system 2 Object to be processed 2a Under sieve 2b Roll crush processed 2c Sieve 2d Vibrating sieve 3,7 Hopper 4,5 Conveyor 6 Sorter 8 Roll crusher 9 Vibrating sieve 10 Fuel shell product 11 Conveyor 12 Conveyor 13 Magnetic separator 14 Weak magnetic product 15 Ferromagnetic product 16 Iron scrap 17 MIX metal 60 Cylindrical body 61a Input port 61b Discharge port 62 Non-hole part 63 Sieve hole 64 Perforated part 65 Lifter 66 Frame material 67a Outer layer 67b Inner layer 68 Support plate 80 Body 81a, 81b Roller 82 Projection

Claims (8)

In a processing method of an object to be processed including a collapsible lump in which a powder is solidified,
Obtaining a sieving material containing the lump by first sieving the workpiece;
A roll crusher for crushing the under-sieving material, wherein the lump-like material contained in the under-sieving material is crushed, and the hard material such as a metal piece is passed through the roll without crushing the sieving material. Processing step;
A step of further sieving the workpiece treated by the roll crusher, and sieving the particulate matter;
The processing method of the to-be-processed object characterized by providing. In the processing method of the to-be-processed object of Claim 1,
The primary sieving is carried out by sieving so that at least 80% or more of the material to be processed becomes an undersieved material. In the processing method of the to-be-processed object of Claim 1 or 2,
The primary sieving fraction is
A hollow cylindrical body that is rotatably arranged, and is provided with a non-hole portion without a sieve hole on the upstream side of a predetermined range from the charging port for charging the workpiece, and a plurality of downstream side A processing method for an object to be processed, which is performed by a rotary sorter provided with a cylindrical body provided with a perforated portion having a sieve hole. In the processing method of the to-be-processed object of Claim 3,
A processing method for an object to be processed, wherein the mass contained in the object to be processed is collapsed by scraping the object to be processed with a lifter provided in the non-porous part. In the processing method of the to-be-processed object of any one of Claim 1 to 4,
The secondary sieving is sieved into a vibrating sieve top and a vibrating sieve bottom with a vibrating sieve. In the processing method of the to-be-processed object of any one of Claim 1 to 5,
The primary sieving material sieved by the primary sieving and the secondary sieving material sieved by the secondary sieving are further separated into a magnetic material and the other by a magnetic separator. Processing method of processed material. In the processing method of the to-be-processed object of any one of Claim 1 to 6,
A method for treating a treatment object, wherein the treatment object is an incineration residue of industrial waste. In the processing method of the to-be-processed object of any one of Claim 1 to 7,
A method for treating a material to be treated, wherein the material to be treated is an incineration residue of industrial waste, and the vibrating sieve is used as a raw material for cement.

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