JP7227207B2 - Container for transportation of incinerated gold and silver slag, and transportation method of incinerated gold and silver slag - Google Patents

Description

TECHNICAL FIELD The present invention relates to a container for transporting incinerated gold and silver slag and a method for transporting incinerated gold and silver slag.

As a method of processing waste such as electrical and electronic component scraps (called gold and silver slag), the gold and silver slag is incinerated in a kiln furnace, and the incinerated gold and silver slag (called incinerated gold and silver slag) is sieved with a sieving machine. A method is known in which the sieved material after sieving is treated in a melting furnace.

If the place where the kiln furnace is installed is far from the place where the melting furnace is installed, it is necessary to load the incinerated gold and silver slag after screening into a container and transport it to the place where the melting furnace is installed. .

JP 2014-240748 A

However, the incinerated gold and silver slag may contain a certain amount of moisture, and even if the container is tilted to discharge the incinerated gold and silver slag from the container, there is a risk that the incinerated gold and silver slag will remain in the container and cannot be completely discharged.

The incinerated gold and silver slag shipping container described herein is intended to facilitate the discharge of the incinerated gold and silver slag. In addition, the method for transporting the incinerated gold and silver slag described in this specification aims to reduce the labor involved in transporting the incinerated gold and silver slag.

The incinerated gold and silver slag transport container described in this specification is a rectangular parallelepiped incinerated gold and silver slag transport container in which the incinerated gold and silver slag is directly loaded , and the first side wall of the incinerated gold and silver slag transport container is , the container for transporting the incinerated gold and silver slag is tilted and functions as an opening and closing door for discharging the incinerated gold and silver slag inside to the outside, and the first side wall and the second side wall facing the first side wall. The third and fourth sidewalls other than the sidewalls and the floorboard are corrugated plates having uneven inner surfaces, and the inner surfaces of the third and fourth sidewalls and the floorboard are approximately It is covered with a flat inner panel.

The method for transporting the incinerated gold and silver slag described in this specification is provided in a container having a floor plate and side walls which are corrugated plates having an uneven inner surface , and the floor plate and the side walls being covered with a substantially flat lining plate. a step of directly loading the incinerated gold and silver slag; a step of transporting the container loaded with the incinerated gold and silver slag to a destination ; discharging from the container while conforming.

The incinerated gold and silver slag transport container described in this specification has the effect of making it easier to discharge the incinerated gold and silver slag. In addition, the method for transporting the incinerated gold and silver slag described in this specification has the effect of reducing the labor involved in transporting the incinerated gold and silver slag.

It is a figure which shows the procedure of the process of gold and silver slag in one embodiment. 1 is a perspective view of a container; FIG. FIG. 4 is a diagram showing a state in which the ceiling plate and the opening/closing door are removed from the container; 1 shows a tractor and a two-axle trailer for transporting containers; FIG. FIG. 4 is a diagram showing a container without lining boards; FIGS. 6A and 6B are diagrams for explaining Experiments 1 and 2. FIG. 7A and 7B are diagrams showing the results of Experiments 1 and 2. FIG.

An embodiment will be described in detail below with reference to FIGS. 1 to 7. FIG. FIG. 1 is a diagram showing a procedure for treating gold and silver slag in one embodiment. Note that the gold and silver slag in the present embodiment is, for example, electrical and electronic component waste.

In this embodiment, as shown in FIG. 1, gold and silver slag is first put into a kiln furnace 10 and incinerated (incineration step).

The gold and silver slag roasted in the kiln furnace 10 is put into a sifter 12 and sieved (sieving step). Here, the sieving machine 12 is a device that performs sieving using a sieve having meshes of a predetermined size (25 μm to 50 mm). In the present embodiment, after sieving once, an operation of sieving the sieved material again is repeated a plurality of times (for example, three times), and the sieved material obtained by the multiple sieving operations is subject to processing. Here, the gold and silver slag may have formed lumps due to heat immediately after incineration and may have grown in size. Therefore, the gold and silver slag can be appropriately sieved by performing sieving a plurality of times (for example, three times) while appropriately crushing the lumps of the gold and silver slag. The number of times of sieving may be determined in consideration of the cost and time required for sieving, and whether or not sieving is properly performed.

In addition, the incinerated gold and silver slag may be appropriately subjected to treatment such as crushing, magnetic separation, aluminum separation (eddy current separation, etc.). Iron, stainless steel, and aluminum can be recovered from gold and silver slag by magnetic separation and aluminum sorting.

The sieved material to be processed is loaded into a container for transporting incinerated gold and silver slag (hereinafter simply referred to as "container") 14 (loading step). After that, the container 14 loaded with the sieved material is transported to the destination where the melting furnace 18 is located (transportation step). When the container 14 arrives at the destination, the unsieved material is discharged from the container 14 (discharging process), and the discharged unsieved material is processed in the melting furnace 18 (processing process).

Here, the container 14 used in this embodiment will be described in detail.

A perspective view of the container 14 is shown in FIG. The container 14 is a 20-foot container having a cuboid shape. The container 14 includes a floor plate 20, side walls 22a, 22b, 22c, 22d (side wall 22d is not shown in FIG. 2), and a ceiling plate 24. As shown in FIG. The floor plate 20, the side walls 22a to 22d, and the ceiling plate 24 are plate members called corrugated plates made of iron or aluminum. The side wall 22b has two opening/closing doors 23a and 23b that can be opened with two sides. When the opening/closing doors 23a and 23b are closed, the side wall 22b functions as the side wall 22b of the container 14. Act as an exit. The side wall 22b having the opening/closing doors 23a and 23b corresponds to the first side wall, and the side wall 22d opposite thereto corresponds to the second side wall. Moreover, the side walls 22a and 22c other than the side walls 22b and 22d correspond to the third and fourth side walls.

FIG. 3 shows a state in which the ceiling plate 24 and the opening/closing doors 23a and 23b are removed from the container 14. As shown in FIG. As shown in FIG. 3 , the floor plate 20 and the two side walls 22 a and 22 c inside the container are covered with lining plates 30 , 31 and 32 .

The lining plates 30 to 32 are plates made of, for example, ultra-high molecular weight polyethylene or Teflon ("Teflon" is a registered trademark, the same shall apply hereinafter). The lining plates 30 to 32 have a thickness of 25 μm to 50 mm and a strength (tensile strength at break) of 13 to 45 MPa. By adopting such plate thickness and strength, the lining plates 30 to 32 are prevented from being damaged or deformed by the weight or impact when the incinerated gold and silver slag is loaded into the container 14 .

Also, the coefficient of static friction of the lining plates 30 to 32 is set to 0.21 or less. In this embodiment, the incinerated gold and silver slag (unsieved material) is loaded into the container 14 with the ceiling plate 24 removed. Then, the container 14 loaded on a ship or the like and transported to the vicinity of the destination is mounted on the loading platform 122 of the biaxial trailer 120 as shown in FIG. The biaxial trailer 120 is towed by a tractor 125 having a dump device 126 and transported to the destination. When transported to the destination, the dumping device 126 of the tractor 125 tilts the front side of the container 14 so that it is positioned higher than the rear side, and the incinerated gold and silver slag inside the container 14 is released from the rear side of the container 14. It is discharged from the opening/closing doors 23a and 23b. In this embodiment, since the lining plates 30 to 32 having a flat plate shape and a coefficient of static friction of 0.21 or less are provided, the incinerated gold and silver slag slides when the container 14 is tilted as shown in FIG. It becomes easier and is easy to discharge to the outside of the container 14.例文帳に追加The dumping device 126 can normally be tilted until the floor surface of the container 14 is about 38 degrees with respect to the horizontal plane. be done.

In addition, the lining plates 31 and 32 do not have to cover the inner surfaces of the side walls 22a and 22b. For example, when the incinerated gold and silver slag is loaded only up to about 80% of the height in the container 14, the inner panels 31 and 32 cover about 20% of the inner surfaces of the side walls 22a and 22b. It doesn't have to be.

FIG. 5 shows the container 14' without the linings 30-32. As shown in FIG. 5, the floor plate 20 and side walls 22a and 22c of the container 14' are corrugated plates, and the inner surface has an uneven shape. In addition, the surface roughness of the floor plate 20 and the side walls 22a and 22c is not designed to facilitate the discharge of the incinerated gold and silver slag. Therefore, when the incinerated gold and silver slag is loaded into the container 14', there is a possibility that all the incinerated gold and silver slag will not be discharged even if the container 14' is tilted up to 38 degrees. In some cases, a checkered steel plate is laid on the floor plate 20 of the container.

(Example)
The present inventor conducted the following experiment in order to confirm the slidability of the incinerated gold and silver slag.

(Experiment 1)
(1-1) An incinerated gold and silver slag having a low moisture content (12%) was prepared.
(1-2) Low-moisture incinerated gold and silver slag was provided in the shape of a mountain on a test plate member placed horizontally as shown in FIG. 6(a). The angle of repose of the incinerated gold and silver slag at this time was 43.0 degrees.
(1-3) As shown in FIG. 6(b), the inclination angle of the test plate member was gradually increased, and the inclination angle when all the incinerated gold and silver slag had slid down was measured.
(1-4) The above (1-2) and (1-3) were repeated using four types of test plate members: SS checkered steel plate, SUS plate, ultra-high molecular weight polyethylene plate, and Teflon plate. The coefficient of friction of the SS checkered steel plate is 0.77-0.81, the coefficient of friction of the SUS plate is 0.6, the coefficient of friction of the ultra-high molecular weight polyethylene plate is 0.07-0.11, and the coefficient of friction of the Teflon plate is The coefficient of friction was between 0.04 and 0.10.

The results of Experiment 1 are shown in FIG. 7(a).

According to the results of Experiment 1 shown in Fig. 7(a), it was found that all low-moisture incinerated gold and silver slag slipped down on SUS plates, ultra-high-molecular-weight polyethylene plates, and Teflon plates at an inclination angle of 38 degrees or less. .

(Experiment 2)
(2-1) A low-moisture (12%) incinerated gold and silver slag was prepared.
(2-2) Low-moisture incinerated gold and silver slag was placed in the shape of a mountain on a horizontally placed test plate member as shown in FIG. 6(a), and then compacted from above.
(2-3) Gradually increasing the inclination angle of the test plate member, the inclination angle was measured when all the incinerated gold and silver slag had slid down.
(2-4) The above (2-2) and (2-3) were repeated using four types of test plate members: SS checkered steel plate, SUS plate, ultra-high molecular weight polyethylene plate, and Teflon plate.

The results of Experiment 2 are shown in FIG. 7(a).

According to the results of Experiment 2 in Fig. 7(a), even if the low-moisture incinerated gold and silver slag is pressed and hardened, all the SUS plates, ultra-high-molecular-weight polyethylene plates, and Teflon plates have an inclination angle of 38 degrees or less. It was found that the incinerated gold and silver slag of the

(Experiment 3)
(3-1) An incinerated gold and silver slag having a high moisture content (20%) was prepared.
(3-2) A high-moisture incinerated gold and silver slag was placed in the shape of a mountain on a test plate member placed horizontally as shown in FIG. 6(a). The angle of repose of the incinerated gold and silver slag at this time was 43.0 degrees.
(3-3) As shown in FIG. 6(b), the inclination angle of the test plate member was gradually increased, and the inclination angle was measured when all the incinerated gold and silver slag had slid down.
(3-4) The above (3-2) and (3-3) were repeated using four types of test plate members: SS checkered steel plate, SUS plate, ultra-high molecular weight polyethylene plate, and Teflon plate.

The results of Experiment 3 are shown in FIG. 7(b).

According to the results of experiment 3 shown in FIG. 7(b), it was found that if the ultra-high molecular weight polyethylene plate or the Teflon plate had an inclination angle of 38 degrees or less, all the high-moisture incinerated gold and silver slag would slide down.

(Experiment 4)
(4-1) An incinerated gold and silver slag having a high moisture content (20%) was prepared.
(4-2) Burned gold and silver slag having a high moisture content was placed in a mountain shape on a test plate member placed horizontally as shown in FIG. 6(a), and then compacted from above.
(4-3) Gradually increasing the inclination angle of the test plate member, the inclination angle was measured when all the incinerated gold and silver slag had slid down.
(4-4) The above (4-2) and (4-3) were repeated using four types of test plate members: SS checkered steel plate, SUS plate, ultra-high molecular weight polyethylene plate, and Teflon plate.

The results of Experiment 4 are shown in FIG. 7(b).

According to the results of Experiment 4 in FIG. 7(b), even if the high-moisture incinerated gold and silver slag is pressed and compacted, the tilt angle is 38 degrees or less if it is an ultra-high molecular weight polyethylene plate or a Teflon plate. It turned out that everything was slipping away.

From the above results, if the moisture content of the incinerated gold and silver slag is 20% or less, regardless of the presence or absence of compaction, if ultra-high molecular weight polyethylene plates or Teflon plates are used as the lining plates 30 to 32, the inside of the container 14 will be It was found that almost all of the incinerated gold and silver slag could be discharged. The inventor of the present application determined materials for the lining plates 30-32 based on the results of Experiments 1-4.

As described above in detail, according to the present embodiment, the side wall 22b of the container 14 functions as an opening/closing door for discharging the incinerated gold and silver slag inside the container 14 in an inclined state. The side walls 22a and 22c other than the side wall 22d facing the side wall 22b and the floor plate 20 are covered with substantially flat inner plates 31, 32 and 30, respectively. As a result, in the present embodiment, compared to the case where the lining plates 30 to 32 are not provided (FIG. 5), when the container 14 is tilted, the incinerated gold and silver slag loaded in the container 14 can be discharged more easily. can be done.

In this embodiment, the incinerated gold and silver slag is loaded into the container 14 having the floor plate 20 covered with the lining plate 30 and the side walls 22a and 22c covered with the lining plates 31 and 32, and the container 14 is transported to the destination. At the destination, the container 14 is tilted and the incinerated gold and silver slag is discharged from the container 14 along the surfaces of the lining plates 30-32. This facilitates the discharge of the incinerated gold and silver slag at the destination, reducing the need for scraping out the incinerated gold and silver slag from the container 14 and facilitating the cleaning of the inside of the container 14 . As a result, the labor of workers in transporting the incinerated gold and silver slag can be reduced.

In the above embodiment, the case where the container 14 is a 20-foot container has been described, but the container is not limited to this, and may be another container such as a 40-foot container.

In the above-described embodiment, the materials and coefficients of friction of the lining plates 30 to 32 may be different. For example, the coefficient of friction of the lining plates 31 and 32 may be greater than the coefficient of friction of the lining plate 30 .

In the above embodiment, ultra-high molecular weight polyethylene and Teflon are used as materials for the lining plates 30-32. may be used.

The embodiments described above are examples of preferred implementations of the present invention. However, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the present invention.

14 container 20 floor plate 22a side wall (third side wall)
22b side wall (first side wall)
22c side wall (fourth side wall)
22d side wall (second side wall)
30-32 Lining board

Claims (9)

A rectangular parallelepiped container for transporting incinerated gold and silver slag in which the incinerated gold and silver slag is directly loaded ,
The first side wall of the container for transporting the incinerated gold and silver slag functions as an opening and closing door for discharging the incinerated gold and silver slag inside to the outside while the container for transporting the incinerated gold and silver slag is tilted,
The first side wall, the third side wall other than the second side wall facing the first side wall, the fourth side wall, and the floor plate are corrugated plates having uneven inner surfaces, A container for transporting incinerated gold and silver slag, characterized in that the inner surface of the side wall of the fourth side wall and the floor plate is covered with a substantially flat lining plate. 2. A container for transporting incinerated gold and silver slag according to claim 1, wherein said lining plate is a plate made of ultra-high molecular weight polyethylene or Teflon (registered trademark). 3. The container for transporting incinerated gold and silver slag according to claim 1, wherein the plate thickness of said lining plate is 25 μm to 50 mm. The container for transporting incinerated gold and silver slag according to any one of claims 1 to 3, wherein the strength of said lining plate is 13 to 45 MPa. A container for transporting incinerated gold and silver slag according to any one of claims 1 to 4, characterized in that the coefficient of static friction of said lining plate is 0.21 or less. The incinerated gold and silver slag transport container according to any one of claims 1 to 5, wherein the incinerated gold and silver slag transport container is a 20-foot container. a step of directly loading the incinerated gold and silver slag into a container having a floor plate and side walls which are corrugated plates having an uneven inner surface, wherein the floor plate and the side walls are covered with a substantially flat lining plate ;
a step of transporting the container loaded with the incinerated gold and silver slag to a destination;
A method of transporting incinerated gold and silver slag, comprising a step of tilting the container at the destination and discharging the incinerated gold and silver slag from the container while making the incinerated gold and silver slag along the surface of the lining plate. 8. The method according to claim 7, wherein in the discharging step, the entire amount of the incinerated gold and silver slag loaded in the container is discharged in a state in which the inclination angle of the floor plate of the container is 38 degrees or less with respect to the horizontal plane. A method for transporting incinerated gold and silver slag as described. 9. A method for transporting incinerated gold and silver slag according to claim 7 or 8, characterized in that the moisture content of said incinerated gold and silver slag is 20% or less.

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