JPH1016841A - Method for recovering high quality iron scrap from scrapped vehicle and its facilities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and facilities for recovering iron scraps having a small non-iron content of copper or tin and used as raw material for steel plates and efficiently processing a scrapped vehicle so as to reduce the elution value of lead contained in shredder dust. SOLUTION: For processing a scrapped vehicle, a step D for efficiently eliminating non-iron metal containing part items is provided between a function part item recovering step C and a press step E or a shredder step F. For efficiently processing the scrapped vehicle, a pre-processing device A, a body part item recovering device B, a function part item recovering device C and a non- iron recovering device D are linearly arranged and carrying of the scrapped vehicle is performed by a beam type carrier device. For recovering a chassis portion, a body roller is used. Thus, high quality iron scraps G used for steel plates are recovered from the scrapped vehicle. Also, the elution value of lead contained in shredder dust produced during shredder F machining is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the recovery of high-grade iron scrap for recycling iron scrap from scrap cars as a raw material for steelmaking.

[0002]

2. Description of the Related Art In steelmaking, lead is contained in iron scrap as a raw material.
If a non-ferrous metal such as copper or tin is mixed in, the removal becomes difficult, and the quality of the steel product is deteriorated.

However, when a scrapped vehicle is used as a raw material for steelmaking, it has conventionally been customary to remove only the main components such as tires, seats, batteries, fuel tanks, engines and the like, and then shred or press. It is. The iron scrap recovered after the shredder treatment contains a large amount of copper, tin, and the like, which are often used in motors, harnesses in which a copper wire is coated with a synthetic resin, and the like, and cannot be used as it is. Therefore, when a scrapped vehicle is used as a raw material for steelmaking, it is necessary to separate and collect nonferrous metals.

Conventionally, this non-ferrous metal has been separated and recovered by magnetic separation or manual operation after shredder treatment. However, a copper wire is integrated with an iron core like motor scraps or a harness is attached to an iron scrap. Because of the entanglement, non-ferrous metals cannot be removed until the recovered iron scrap can be used as a raw material for steelmaking.

Therefore, for example, Japanese Patent Application Laid-Open No. Sho 50-1260
Japanese Patent No. 79 proposes pyrolysis of shredder dust generated during shredder treatment.
Japanese Patent Application Laid-Open No. Hei 6-91197 proposes a method in which after a shredder treatment, a light-weight material collected by a dust collector is burned, and a copper material is individually selected by a vibrating sieve, an eddy current separator, and a specific gravity liquid separator. . However, in any case, harmful dioxin is generated when the shredder dust is heated, and furthermore, there is a problem in that equipment cost is required for measures against generation of highly corrosive hydrogen chloride gas.

[0006] In addition, dismantling of scrap cars is performed manually or by a method in which an attachment for dismantling is attached to a construction machine such as a power shovel and an engine or the like is peeled off. Therefore, labor productivity is poor, and furthermore, the vehicle body is significantly deformed, and it is difficult to completely remove non-ferrous metal parts such as a motor. In addition, the lead elution value of shredder dust generated during shredder treatment is high.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a means for efficiently recovering iron scrap as a high-grade steelmaking raw material for steel sheets from scrapped vehicles under harmless processing conditions. In establishment.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a method for recovering high-grade iron scrap from end-of-life vehicles.
A pre-processing step for removing consumables such as fuel, a recovery step for body parts such as doors and fenders, a recovery step for functional parts such as engines and suspensions, and a recovery step for non-ferrous metal parts such as motors and harnesses The method for recovering steel scrap for a steelmaking raw material from an end-of-life vehicle comprising the steps of performing each of the above steps as a continuous step.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As a facility for carrying out this recovery method, a pre-processing device having a table on which a scrap car is placed and which can be raised and lowered, a body part recovery device provided with a body support, A functional part collection device with a simple table and a non-ferrous metal component collection device consisting of a non-ferrous metal component collection clamp and a body holding jig are linearly and continuously arranged,
Furthermore, it is possible to form an arrangement of the respective devices in which a transfer device that can travel between the respective devices is arranged.

[0010] In order to be able to apply the scrap iron recovered from end-of-life vehicles to steelmaking raw materials for steel sheets, the content of copper in the scrap iron should be 0.1% by weight or less and the content of tin in the scrap iron should be 0.0% or less.
It can be set to 1% by weight or less, and the elution value of lead from shredder dust can be set to 0.1 ppm or less.

[0011]

FIG. 1 shows the working process of the present invention. In the figure, in the pre-processing step A, after removing tires, batteries and the like from the end-of-life vehicle, there is an inherent danger of fire and the like in the subsequent steps, and fuel, oils and cooling water, refrigerant The consumable materials such as are removed and collected by opening the discharge valve, making a hole in the container, or extracting the consumable materials using a suction pump. In the next body part collection process B,
It collects body parts that can be used as repair parts such as bumpers, fenders, and doors, and removes and collects sheets. Subsequently, the scrapped vehicle is transported to the next step, and in the functional part recovery step C, the engine, gear case, suspension device and muffler functional parts are separated and removed from the body and recovered, and then transported to the next step, and the non-ferrous metal parts recovery step D is performed. Removes and collects non-ferrous metal parts such as harnesses and motors. Then, the high-grade iron scrap G which can be used as a steelmaking raw material for a steel sheet by carrying the car body having only the outer shell and subjecting it to a press E or light pressure press and then a shredder F treatment.
Get.

FIG. 2 shows equipment for carrying out the work process shown in FIG. 1. This equipment includes a pretreatment device 1, a body part collection device 2, a table 3, a functional part collection device 4, a non-ferrous metal. The parts recovery devices 5 are arranged in series, and the transportation of the vehicle body 7 between the devices is performed by a transportation device 6 using a hoist crane.

FIG. 3 shows details of the structure of the pre-processing device 1 of FIG. As shown in FIG. 1, the pretreatment device 1 includes a table 9 on which a pantograph-type scrap car 7 that can be raised and lowered by a hydraulic cylinder 8 is mounted, a saucer 10 for collecting oil such as gasoline or oil, and a pan 10 connected by a flexible hose 13. It has a collection container 11. The oil collecting pan 10 is a stand 12
, Is mounted on a trolley together with the oil recovery container 11, and when the scrapped vehicle 7 on the table 9 rises,
The oil collecting tray 10 is arranged so as to be movable to a lower position such as a gasoline tank of the scrap car 7.

FIG. 4 shows the body part collecting apparatus 2 shown in FIG.
The details are shown below. In addition to a vehicle body receiving stand 14 for holding the scrap car 7 at an appropriate height to improve workability, a plasma cutting machine 15, a gas cutting machine 16 and the like essential for the work are provided. Of course, any one of the cutting machines may be used. Handling of collected parts is performed by a forklift or the like. The inside of the vehicle body cradle 14 is hollow so that the position can be moved by a forklift or the like.

FIG. 5 shows the details of the functional parts collection device 4 of FIG. The functional parts collection device 4 has an undulating table 3 on which an electric cylinder 17 and a vehicle body 7 are mounted. As shown in FIG. 2, the center of the table 3 is opened so that a collected product such as a suspension device can be cut off from the vehicle body 7.
It also has a shape. The table 3 also has a safety effect as a fence, for example, preventing a collected product such as a cut suspension device from falling and colliding with an operator. Further, in order to prevent the floor surface from being damaged when the parts are collected, a steel deck 18 is used.
Is provided. The electric cylinder 17 is moved by the electric motor 19 and the gear 20, and the rotatable shaft 21 of the table 3 is moved.
By pulling the table lower arm 22 extending obliquely downward, the table 3 rises and the vehicle body 7 rolls over. In order to prevent the vehicle body 7 from sliding down, an L-shaped stopping portion 23 extending above the rotatable shaft 21 of the table 3 is provided.
The rotatable shaft 21 of the table 3 is supported by a bearing 25 of a gantry 24, and most of the lower surface of the table 3 is supported by the deck 18. The electric motor 19 and the electric cylinder 17 are provided in a pit 26 below the deck 18.

The rollover of the vehicle body 7 may be of a type that is directly pushed up by a cylinder, or a facility of a structure in which the vehicle body 7 is hooked by a hook or the like and rolled over. Also, a plasma cutting machine 15, a gas cutting machine 16 and the like are provided so that non-ferrous metal parts can be easily collected. Any one type of cutting machine is possible.

FIG. 6 shows details of the non-ferrous metal parts recovery apparatus 5 of FIG. The non-ferrous metal parts recovery device 5 includes a support 27
, A cantilever-type turning arm 28 is rotatably mounted on the arm 28. An electric hoist crane 29 is provided on this arm 28, and a clamp 30 for collecting non-ferrous metal parts is attached to the tip of the arm 28 instead of a hook. Positioning of clamp 30
The rotation is performed by the turning arm 28, the traveling motor 31, and the vertical motor 32. The clamp 30 is mounted on the tip of the suspension chain 33 of the electric hoist crane 29. The arm 28 is turned by a motor 280. Clamp 30
Of the electric hoist crane 29 is operated by a pendant switch 34 for operating the electric hoist crane 29. The vehicle body 7 is fixed using a vehicle body fixing clamp 37 using a rope 36 such as a chain passed through a floor 35 of the vehicle body 7 so that the vehicle body 7 does not come up when the non-ferrous metal parts are removed. The vehicle body fixing clamp 37 hooks a hook 360 via a shackle 371 on one side of an inverted U-shaped block 370 fixed at an appropriate interval to the work floor 38, and hooks a main body on the other side. Body 7
The lower part of the side panel of the vehicle body 7 may be hooked with a hook-like object provided on the work floor 38 so as to be able to move up and down.

FIG. 7 shows details of the transfer device 6 using the crane of FIG. The transport device 6 includes a traveling carriage 43 having a traveling motor 40 and a vertical motor 42 for a hook 41 at one end of a connecting beam 39, and a pulley 46 of a hook 45 operated by the vertical motor 42 at the other end. Hoist crane 48 consisting of driven truck 47 provided with
Is mounted on the traveling rail 49. Hooks 41, 45
Suspends an auxiliary beam 51 provided with a bolt hole 50 whose interval can be appropriately selected according to the suspension position of the vehicle body 7.

A wire 55 having a hook 54 provided with a magnet 53 is hung on a hook 52 mounted on a bolt hole 50 of the auxiliary beam 51 so as to be easily hooked on the vehicle body 7. The running rail 49 is attached to a beam 56 of a building or the like directly or by using a bracket 57. The hook 54 may be a facility having a structure in which a hook or the like is used and the hook 54 is conveyed by being hooked under the roof or under the vehicle body 7. An overhead crane may be used for the transfer device 6.

The operation procedure of the present invention will be described below.

In the pre-processing, the self-propelled scrap car 7 runs by itself,
Put it on the pantograph table 9. Non-self-propelled vehicles should be mounted on a forklift. After collecting batteries,
Raise the table 9 to about 50 cm. After collecting the tires, the table 9 is raised to about 150 cm. After the oil collecting tray 10 is set and gasoline and oils are individually collected, the table 9 is lowered to the ground level. Next, after the magnet 53 is set on the vehicle body 7 so that the hook 54 of the electric hoist crane 48 does not come off, the hook 54 of the transfer device 6 is hooked on the vehicle body 7.

The vehicle body 7 is transported to the body part collection device 2. Remove the mounting bolts with an impact wrench and collect the required body parts. A steel plate such as a fender is cut by a plasma cutting machine 15 having a high cutting speed, and a portion where the plasma cutting machine 15 is unsuitable such as a thick steel material is cut by a gas cutting machine 16 to collect parts.

In the same procedure as described above, the vehicle body 7 is placed on the table 3 which can be raised and lowered using the transfer device 6. After the vehicle body 7 is turned over by 90 °, the engine, the propeller shaft, the suspension, etc., the mufflers, and the mounting bolts of the vehicle body 7 at the bottom of the vehicle body 7 are removed. Next, after the table 3 is folded down and the vehicle body 7 is restored to the horizontal state, when the vehicle body 7 is lifted by the transfer device 6, the collected items remain on the deck 18 and are separated from the vehicle body 7.

In the same procedure as described above, the vehicle body 7 is transported to the non-ferrous metal parts recovery device 5 using the transport device 6. The vehicle body 7 is fixed by the vehicle body fixing clamp 37, and the windshield is cut with an air rag or the like. In a place where it is difficult to collect the non-ferrous metal parts, the vehicle body 7 or the like is cut by the plasma cutting machine 15 or the gas cutting machine 16 so that the non-ferrous metal parts can be easily collected. After that, the clamp 30 of the non-ferrous metal parts recovery device 5 grasps the electric parts such as the motor and the harness, and the vertical motor 3
In step 2, the clamp 30 is raised, and the non-ferrous metal parts are collected. After performing the parts removal and recovery processing of the end-of-life vehicle 7, it can be recycled as an iron scrap raw material for a steel sheet by sending it to the next step of a press or shredder step.

Table 1 shows the results of melting the iron scrap recovered by the present method in a high-frequency furnace and analyzing the components of typical impurities.

In addition, Table 1 shows examples of shredder scrap (recovered iron) grade components published by the Iron and Steel Institute as a conventional method.

[0027]

[Table 1] The allowable level of copper and tin as a steelmaking raw material for steel sheets is about 0.06 to 0.1% by weight of copper, and the quality is insufficient with the conventional method, but the allowable level of copper and tin is low with the method of the present invention. You have cleared the level. In the conventional method, iron and non-ferrous metals are separated by magnetic selection and manual selection. However, there is a substance in which non-ferrous metals are entangled with iron, and the selection is insufficient.

Tin is mostly contained in the solder part, and is removed when the harness and the electric parts are removed.

After treating the two scrapped vehicles under the conditions of the above embodiment, the shredder treatment was individually performed, and the Pb elution test of the shredder dust generated at that time was carried out by the Environmental Agency Notification No. 13
Table 2 shows the results of the tests based on the reference numbers as Examples 1 and 2, respectively.

Further, at this time, after performing a process that does not remove a motor, a harness, and the like simulating the conventional method, a shredder process is similarly performed, and the Pb elution value of the shredder dust generated at that time is shown as the conventional method.

According to the present invention, it can be seen that the elution amount of Pb is reduced.

[0032]

[Table 2] Table 3 shows the results of the dissolution test of heavy metals in Examples, which sufficiently meet the environmental standards.

[0033]

[Table 3]

[0034]

【The invention's effect】

(1) The end-of-life vehicle disposal work can be efficiently performed in a flow operation system.

(2) It is possible to supply high quality iron scrap having a low content of copper, tin and the like.

(3) As a result of the sufficient removal of the non-ferrous metal parts, the elution value of lead from the shredder dust generated in the subsequent shredding process is reduced.

[Brief description of the drawings]

FIG. 1 shows an example of a working process diagram of the method of the present invention.

FIG. 2 shows an example of a layout of each device in the facility of the present invention.

FIG. 3 is a right side portion of the pretreatment device.

FIG. 4 is a front view of the body part collecting device.

FIG. 5 is a front view of the functional parts collection device.

FIG. 6 is a front view of the non-ferrous metal parts recovery device.

FIG. 7 is a left side view of the transfer device.

[Explanation of symbols]

A Pre-processing step B Body part collecting step C Functional part collecting step D Non-ferrous metal part collecting step E Pressing step F Shredder step G High-grade iron scrap 1 Pre-processing device 2 Body part collecting device 3 Undulating table 4 Functional part collecting device 5 Non-ferrous metal parts recovery device 6 Transport device 7 End-of-life vehicle (vehicle body) 8 Hydraulic cylinder 9 Elevating table 10 Oil recovery tray 11 Oil recovery container 12 Stand 13 Flexible hose 14 Body support 15 Plasma cutting machine 16 Gas cutting machine 17 Electric cylinder Reference Signs List 18 deck 19 electric motor 20 gear 21 rotatable shaft 22 table lower arm 23 L-shaped stopper 24 gantry 25 bearing 26 pit 27 support 28 turning arm 280 motor 29 electric hoist crane 30 collection clamp 31 running motor 2 Up / Down Motor 33 Chain 34 Dand Switch 35 Floor 36 Rope 360 Hook 37 Body Fixing Clamp 370 Inverted U-Shaped Block 371 Shackle 38 Work Floor 39 Connecting Beam 40 Running Motor 41 Hook 42 Up / Down Motor 43 Traveling Car 45 Hook Reference Signs List 46 pulley 47 driven truck 48 electric hoist crane 49 traveling rail 50 bolt hole 51 auxiliary beam 52 hook 53 magnet 54 hook 55 wire 56 beam of building 57 bracket

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshio Mori 2-3-13-1, Uehonmachi, Yawatahigashi-ku, Kitakyushu-shi

Claims (3)

[Claims] 1. A pretreatment process for removing consumable members such as tires, batteries, and fuel, a process for collecting reusable body parts such as doors and fenders, a process for collecting functional parts such as engines and suspensions, a motor, A non-ferrous metal component collection process such as a harness, and a post-processing process of performing a press or shredder process on the vehicle body after being removed through the non-ferrous metal component collection process, from a scrapped vehicle. Of high-grade scrap iron. 2. A pre-processing device having a table on which a scrapped vehicle can be placed and which can be raised and lowered, a body part collecting device having a body receiving table, a functional part collecting device having an undulating table, and a non-ferrous metal A high-grade iron from scrap cars, wherein a component collection clamp and a non-ferrous metal component collection device including a vehicle body holding jig are continuously arranged, and further, a transfer device capable of traveling between the respective devices is arranged. Scrap recovery equipment. 3. A facility for collecting high-grade iron scrap from scrap vehicles, wherein the pretreatment device according to claim 2 and the non-ferrous metal parts collection device are arranged linearly in the vehicle length direction of the scrap vehicles.