JP2504905B2 - Resource waste sorting method and equipment - Google Patents
Resource waste sorting method and equipmentInfo
- Publication number
- JP2504905B2 JP2504905B2 JP4356795A JP35679592A JP2504905B2 JP 2504905 B2 JP2504905 B2 JP 2504905B2 JP 4356795 A JP4356795 A JP 4356795A JP 35679592 A JP35679592 A JP 35679592A JP 2504905 B2 JP2504905 B2 JP 2504905B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- sorting
- resource waste
- sorting section
- water tank
- 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 - Fee Related
Links
- 239000002699 waste material Substances 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 67
- 230000005484 gravity Effects 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 7
- 150000002739 metals Chemical class 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 claims description 2
- 239000011521 glass Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 235000019645 odor Nutrition 0.000 description 3
- 239000012634 fragment Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Landscapes
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Processing Of Solid Wastes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主に一般家庭から排出
される燃えないごみの中から、資源の再利用できる物を
分別する際に適用する資源廃棄物選別方法と装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resource waste sorting method and apparatus applied when sorting reusable resources from non-burnable refuse mainly discharged from ordinary households.
【０００２】[0002]
【従来の技術】一般家庭から排出される特に袋内に収納
された燃えないごみは、地方自治体の指導によっては、
金属類、ガラス瓶やその破片、陶磁器類やその破片など
を区分けして袋に入れて出すようにしている場合、ある
いはその指導の無い地方もあるが、しかし指導されてい
ても必ずしも確実に守られておらず、従って回収された
燃えないごみを細かく破砕してコンベアで移送し、その
間に金属類、その殆どは鉄とアルミニウムであるから、
磁石などの除去装置で選別し、また紙などの軽い物は強
制的に吹き付ける風力で除去されている。また他の手段
として、コンベア上に搬送されてくる燃えないごみを作
業員が目視によって摘出する、いわゆる手選別によるの
が現状である。2. Description of the Related Art Non-burnable garbage discharged from ordinary households, especially in bags, is subject to guidance from local governments.
In cases where metal, glass bottles and shards, ceramics and shards are sorted and put out in a bag, or there is no guidance in some areas, but even if they are instructed, it is not always guaranteed. Therefore, the incombustible waste collected is crushed finely and transferred by a conveyor, during which metal, most of which is iron and aluminum,
Sorting is performed by a removal device such as a magnet, and light items such as paper are removed by forced wind. In addition, as another means, at present, so-called manual sorting, in which an operator visually extracts non-burnable refuse conveyed on a conveyor.
【０００３】[0003]
【発明が解決しようとする課題】しかし金属類、ガラス
瓶やその破片あるいは陶磁器類やその破片などを細かく
破砕する場合の処理では、金属類は資源として取り出す
ことができるが、その他のものは資源として再利用する
ことができず、廃棄物として埋立てられるため、資源の
回収率を低下するものである。一方上述の人為的に行わ
れる場合は、ガラス瓶なども回収されるが、作業員が多
数必要であり、単純労働といえども悪臭の中での作業で
あるから嫌われることは勿論、長時間立ったままでの作
業であることから重労働でもあり、しかも目視によって
摘出しているものであるから、摘出漏れが有るなどの問
題点が多々あった。However, in the process of finely crushing metals, glass bottles and fragments thereof, or ceramics and fragments thereof, metals can be taken out as resources, but others can be taken out as resources. Since it cannot be reused and is buried as waste, the recovery rate of resources is reduced. On the other hand, in the case of the above-mentioned artificial operation, glass bottles and the like are also collected, but a large number of workers are required, and even simple labor is unpleasant because it is a work in a foul odor, and of course standing for a long time. Since the work is done as it is, it is hard work, and since it is picked out by visual inspection, there were many problems such as omission of picking.
【０００４】本発明は以上の問題を解決することにあ
り、ガラスや陶磁器類あるいは小砂利などを確実に選別
できることを目的として案出したものである。The present invention is to solve the above problems, and was devised for the purpose of reliably selecting glass, ceramics or small gravel.
【０００５】[0005]
【課題を解決するための手段】本発明による解決手段
は、水流を上流から下流へ複数段階に順次遅くなるよう
に設定して、その最も水流の早い上流部から金属類を除
去した資源廃棄物を投入し、水流の遅速度に応じて資源
廃棄物中の比重の重い物から軽い物を順次選別するが、
最も水流の早い上流部に空気の気泡を底部から発生する
と共に、水面の上方より流水に向かって噴射水を放射し
て、流水を攪拌することを特徴とする。A solution according to the present invention is a resource waste in which metals are removed from the upstream part of the earliest water flow by setting the water flow to be gradually delayed from upstream to downstream in a plurality of stages. , And the lighter ones are sorted sequentially from the ones with a higher specific gravity in the resource waste according to the slow speed of the water flow.
It is characterized in that air bubbles are generated from the bottom in the upstream part of the earliest water flow, and jet water is emitted toward the running water from above the water surface to stir the running water.
【０００６】また上記方法を実現する装置は、始端より
水を注入し末端で排出して水流を発生している水槽を、
その始端側より末端側に向かって複数段階に水槽幅を広
く形成した複数の選別部を設け、該水槽の始端選別部の
上方部に金属類を除去した資源廃棄物を投入する供給コ
ンベアを対設し、始端選別部の底部に空気の気泡を噴射
する空気管を配設する一方、始端選別部の水面より上方
部に水流に向かって水を放射する噴水管を設け、各選別
部にそれぞれ摘出手段を設けることによって行われる。Further, the apparatus for realizing the above method is provided with a water tank in which water is injected from the start end and discharged at the end to generate a water flow,
Providing a plurality of sorting parts having a wide water tank width in multiple stages from the starting end side toward the end side, a supply conveyor for feeding the resource waste from which metals have been removed is provided above the starting end sorting part of the water tank. Installed, the air pipe for injecting air bubbles is arranged at the bottom of the starting point sorting section, while the fountain tube for radiating water toward the water flow is provided above the water surface of the starting point sorting section, and each sorting section is provided with It is carried out by providing extraction means.
【０００７】[0007]
【作用】上記のように水槽を下流に至るに従って水槽の
幅を広くしたものであるから、水流がその幅に応じて遅
くなり、これに投入したごみは、水流の早い流速順に比
重の最も重い物から軽い物が順次沈澱し、またごみの投
入時に空の瓶が浮くものもあるが、噴射水によって瓶内
に水が入り沈澱を促進する。また下からの気泡によって
沈澱する瓶などで押し付けられる紙などの軽い物を浮上
するものである。こうして沈澱した物を各選別部ごとに
摘出手段で排出するものである。Since the width of the water tank is widened as the water tank reaches the downstream side as described above, the water flow becomes slower according to the width, and the dust thrown in the water flow has the highest specific gravity in the order of the speed of the water flow. Light ones gradually settle out of the others, and some empty bottles float when garbage is thrown in, but water sprays water into the bottles to promote precipitation. It also floats light objects such as paper that are pressed by bottles that settle due to bubbles from below. The thus-precipitated material is discharged by the extracting means for each sorting section.
【０００８】[0008]
【実施例】本発明を具体的に図１と図２に示しているよ
うに、横に長い一つの水槽１内に水流を起こして選別処
理するもので、その水流がその上流では早く、下流に至
るに従って段階的に遅くなるように、水槽１の幅を順次
広く形成したもので、図面では始端選別部２、中間選別
部３、後端選別部４の３部分に分けてある。また水槽１
の底部が傾斜して下に至るに従って順次狭められた溝部
５を長手方向に沿って設けている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2 in detail, the present invention is one in which a water flow is generated in one horizontally long water tank 1 to perform a sorting process. The width of the water tank 1 is gradually widened so as to gradually become slower as it reaches step 1. In the drawing, it is divided into three parts, that is, a starting end selecting part 2, an intermediate selecting part 3, and a rear end selecting part 4. Also aquarium 1
A groove portion 5 is provided along the longitudinal direction in which the bottom portion is inclined and is gradually narrowed toward the bottom.
【０００９】前記始端選別部２の上方に供給コンベア６
の端部を対設し、該供給コンベア６で搬送されてくるご
みを落下して始端選別部２内に投入するが、この供給コ
ンベア６の始端部に、ごみを収納している袋を投入しこ
れを破砕して供給コンベア６上に吐出するロータリーフ
イーダー７を備え、供給コンベア６の中間部に鉄製品を
除去する鉄選別部８と、アルミニウム製品を除去するア
ルミニウム選別部９とを設け、水槽１には金属製品を取
り除いて供給するものである。A supply conveyor 6 is provided above the starting end selecting section 2.
The end portions of the supply conveyor 6 are placed opposite to each other, and the dust conveyed by the supply conveyor 6 is dropped and put into the start end sorting section 2. The bag containing the waste is put into the start end portion of the supply conveyor 6. A rotary feeder 7 for crushing this and discharging it on the supply conveyor 6 is provided, and an iron sorting section 8 for removing iron products and an aluminum sorting section 9 for removing aluminum products are provided in the middle of the supply conveyor 6. The metal product is removed and supplied to the water tank 1.
【００１０】上記始端選別部２内の水流より上方部に、
水を下方に及び水流に逆行する方向に噴入する複数本の
噴水管１０を、また始端選別部２内の底部近傍に空気の
気泡を噴射する空気管１１を、それぞれ水槽１の長手方
向か横方向にあるいは双方に亘って配設している。更に
始端選別部２の底の溝部５内に設けたコンベアと水槽１
外へ掻き揚げるフライトコンベアによる第１摘出手段１
２を設けている。Above the water flow in the starting end sorting section 2,
A plurality of fountain pipes 10 for injecting water downward and in a direction reverse to the water flow, and an air pipe 11 for injecting air bubbles into the vicinity of the bottom of the starting end sorting section 2 are provided in the longitudinal direction of the water tank 1, respectively. They are arranged laterally or both. Further, the conveyor and the water tank 1 provided in the groove portion 5 at the bottom of the starting end selection portion 2
First extraction means 1 by a flight conveyor that is lifted up to the outside
2 is provided.
【００１１】従ってこの始端選別部２に投入されたごみ
は下流に流れるが、その間に比重の重い例えばガラス瓶
などは沈澱し、軽いものは下流に流れ、沈澱した物は第
１摘出手段１２で排出するものである。Therefore, the dust thrown into the start end sorting section 2 flows downstream, but during that time, for example, glass bottles having a high specific gravity settle down, light ones flow downstream, and the settled matter is discharged by the first extracting means 12. To do.
【００１２】次ぎに、中間選別部３は前記始端選別部２
の幅より広く形成してあって、この中間選別部３の底部
に始端選別部２と同様の構造で第２摘出手段１３を設
け、更に、中間選別部３の上層部に、浮き瓶を回収する
ように、スキーマーによる第３摘出手段１４を水槽１の
長手方向に対して直交して設けている。Next, the intermediate selecting section 3 is the starting point selecting section 2
The second extracting means 13 is provided at the bottom of the intermediate sorting section 3 in the same structure as the starting point sorting section 2, and the floating bottle is collected in the upper layer portion of the intermediate sorting section 3. As described above, the third extracting means 14 based on the schema is provided orthogonal to the longitudinal direction of the water tank 1.
【００１３】上記中間選別部３では、始端選別部２から
小砂利、ガラスあるいは陶磁器の細片、及び浮き瓶、更
に紙製品や合成樹脂フイルムなどが含まれているが、紙
製品など比重の軽いものを除く他の比重の重いものは沈
澱し、第２摘出手段１３で排出され、また浮き瓶は第３
摘出手段１４で掻き出されるものである。The intermediate sorting section 3 includes small gravel, glass or ceramic strips, a floating bottle, paper products, synthetic resin film, etc. from the starting end sorting section 2, but has a low specific gravity such as paper products. Except for the ones, the ones with a large specific gravity are precipitated and discharged by the second extracting means 13, and the floating bottle is the third one.
It is scraped out by the extracting means 14.
【００１４】以上のように選別され最後に残った紙など
は後端選別部４に流れ込むもので、後端選別部４は前記
中間選別部３の幅より更に広く形成してあって、目の粗
い網状の第１スクリーン１５を流れを横切るように設
け、該第１スクリーン１５の下流側に平行して第４摘出
手段１６を設け、更に下流側に水を清浄化する第２スク
リーン１７を設けている。The last sheet of paper or the like that has been sorted out as described above flows into the trailing edge sorting section 4, and the trailing edge sorting section 4 is formed wider than the width of the intermediate sorting section 3, A rough net-like first screen 15 is provided so as to cross the flow, a fourth extracting means 16 is provided in parallel to the downstream side of the first screen 15, and a second screen 17 for purifying water is provided further downstream. ing.
【００１５】従って後端選別部４では比重の軽いものが
回収され、焼却可能のものであるから脱水して焼却炉へ
投入すれば良い。Therefore, in the trailing edge sorting section 4, those having a low specific gravity are collected and can be incinerated, so that they can be dehydrated and put into an incinerator.
【００１６】また、上記第２スクリーン１７で清浄化さ
れた水は、第１ポンプ１８によって始端選別部２へ供給
し、他の第２ポンプ１９で噴水管１０へ供給するように
配管することが好ましく、第１ポンプ１８の吐出量を加
減することにより、水槽１内の流速を加減することがで
きる。同様に第２ポンプ１９で噴水管１０からの噴射水
量をも制御することができるようになる。尚、後端選別
部４内での水の清浄化が不完全であれば、浄化槽に流入
して処理を行い、その水を前記のように第１ポンプ１８
と第２ポンプ１９で帰流しても良い。The water purified by the second screen 17 may be supplied to the starting end sorting section 2 by the first pump 18 and supplied to the fountain pipe 10 by another second pump 19. Preferably, by adjusting the discharge amount of the first pump 18, the flow velocity in the water tank 1 can be adjusted. Similarly, the second pump 19 can also control the amount of water sprayed from the water spray pipe 10. If the cleaning of the water in the rear end sorting unit 4 is incomplete, the water is introduced into the septic tank for treatment, and the water is treated by the first pump 18 as described above.
The second pump 19 may be used for returning.
【００１７】従って一つの水槽１内の始端選別部２と、
中間選別部３及び後端選別部４において、順次比重の違
いによって選別されるもので、始端選別部２で排出され
るものは殆どガラス瓶として再生することができ、また
中間選別部３では小砂利が多くそのまま土中に埋めるこ
とができ、更に後端選別部４のものは可燃性のものであ
るから、そのまま炉で焼却できるものである。Therefore, the starting end selecting section 2 in one water tank 1,
In the intermediate sorting section 3 and the trailing edge sorting section 4, the sorting is performed in order of difference in specific gravity, and most of the material discharged in the leading edge sorting section 2 can be regenerated as a glass bottle, and in the intermediate sorting section 3, small gravel. It can be buried in the soil as it is, and since the rear end sorting section 4 is flammable, it can be incinerated as it is in a furnace.
【００１８】[0018]
【発明の効果】本発明による資源廃棄物選別方法及び装
置によれば、流水の上流から下流へその流速を複数段階
に順次遅くなし、上流部で金属製品を除去したごみを投
入し、流速の早い順番に比重の重いものから沈澱して分
別して、各選別部に殆ど同種類のものを収集するが、投
入された廃棄物の中に混入する空瓶で蓋の無いものは浮
いたままで流下することになるが、最も水流の早い上流
部に水中の下方部から空気の気泡を噴射する一方、水面
の上方より水を噴射して流水を攪拌するものであるか
ら、上流部で浮き瓶内に水が入り沈下して、確実に比重
の重いものとして回収されるものであり、しかもその沈
下中に紙が付着する恐れがあるが、上流部に発生してい
る空気の気泡によって紙の付着を阻止して流下されるも
ので、資源廃棄物の中から同種類のものを確実に収集さ
れるようになる。しかもその選別時間が短時間で能率良
く処理される。更に、水槽内で選別されることから、悪
臭を大幅に抑えることができ、ごみを飛散することがな
いので、処理環境を清潔に保つことができる。EFFECTS OF THE INVENTION According to the resource waste sorting method and apparatus of the present invention, the flow velocity of the flowing water is gradually decreased from the upstream to the downstream in a plurality of steps, and the debris from which metal products have been removed is thrown in at the upstream portion of Almost the same kind of waste is collected in each sorting section by precipitating and sorting from the one with a high specific gravity in an early order, but empty bottles that are mixed in the input waste and have no lid flow down while floating. However, while air bubbles are jetted from the lower part of the water to the upstream part where the water flow is the fastest, the water is jetted from above the water surface to stir the running water. The water enters the tank and sinks, and is reliably recovered as a material with a high specific gravity. Moreover, the paper may adhere during the sinking, but the air bubbles generated in the upstream part cause the paper to adhere. It is the one that blocks the It comes to be reliably collect those same type from. Moreover, the sorting time is short and the processing is efficient. Moreover, since the odors are sorted in the water tank, the bad odor can be significantly suppressed and the dust is not scattered, so that the processing environment can be kept clean.
【図１】本発明による資源廃棄物選別装置を示す平面図
である。FIG. 1 is a plan view showing a resource waste sorting apparatus according to the present invention.
【図２】同じく断面図である。FIG. 2 is a sectional view of the same.
１ 水槽 ２ 始端選別部 ３ 中間選別部 ４ 後端選別部 ６ 供給コンベア １０ 噴水管 １１ 空気管 １２ 第１摘出手段 １３ 第２摘出手段 １４ 第３摘出手段 １６ 第４摘出手段 １８ 第１ポンプ １９ 第２ポンプ DESCRIPTION OF SYMBOLS 1 Water tank 2 Starting point selection part 3 Intermediate selection part 4 Rear end selection part 6 Supply conveyor 10 Fountain pipe 11 Air tube 12 1st extraction means 13 2nd extraction means 14 3rd extraction means 16 4th extraction means 18 1st pump 19 19th 2 pumps
Claims (2)
くなるように設定して、その最も水流の早い上流部に水
中の下方部から空気の気泡を噴射する一方、水面の上方
より水を噴射して流水を攪拌し、その上流部に金属類を
除去した資源廃棄物を投入し、水流の遅速度に応じて資
源廃棄物中の比重の重い物から軽い物を順次選別するこ
とを特徴とする資源廃棄物選別方法。 1. A set to be sequentially delayed in a plurality of stages of water flow from the upstream to the downstream, the water in the early upstream portion of its most water
Air bubbles are jetted from the lower part of the inside, while above the water surface
More water is sprayed to stir the running water, and the resource waste from which metals have been removed is added to the upstream part, and lighter ones are selected from the ones with a higher specific gravity among the resource wastes according to the slow speed of the water flow. A method for sorting resource waste, which is characterized by the following.
を発生している水槽（１）を、その始端側より末端側に
向かって複数段階に水槽（１）幅を広く形成した複数の
選別部（２，３，４）を設け、該水槽（１）の始端選別
部（２）の上方部に金属類を除去した資源廃棄物を投入
する供給コンベア（６）を対設し、始端選別部（２）の
底部近傍に空気の気泡を上方に向けて噴射する空気管
（１１）を配設し、始端選別部（２）の水面より上方部
に水面に向けて水を放射する噴水管（１０）を設け、各
選別部（２，３，４）にそれぞれ摘出手段（１２，１
３，１４，１６）を設けていることを特徴とする資源廃
棄物選別装置。 2. A plurality of water tanks (1) in which water is injected from the start end and discharged at the end to generate a water flow, in which the width of the water tank (1) is widened in multiple stages from the start end side toward the end side. The sorting section (2, 3, 4) of the water tank (1) is provided above the starting sorting section (2) of the water tank (1) with a supply conveyor (6) for feeding the resource waste from which metals have been removed. beginning sorting part of (2)
An air pipe (11) for injecting air bubbles upward is arranged near the bottom part, and a part above the water surface of the starting end selection part (2) is arranged.
A fountain pipe (10) that radiates water toward the surface of the water is provided in each of the sorting units (2, 3, 4), and extraction means (12, 1)
3, 14, 16) are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4356795A JP2504905B2 (en) | 1992-12-21 | 1992-12-21 | Resource waste sorting method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4356795A JP2504905B2 (en) | 1992-12-21 | 1992-12-21 | Resource waste sorting method and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06182252A JPH06182252A (en) | 1994-07-05 |
| JP2504905B2 true JP2504905B2 (en) | 1996-06-05 |
Family
ID=18450812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4356795A Expired - Fee Related JP2504905B2 (en) | 1992-12-21 | 1992-12-21 | Resource waste sorting method and equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2504905B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4587215B2 (en) * | 2005-02-16 | 2010-11-24 | セイコーインスツル株式会社 | Component separation mechanism and component separation method |
| JP4857094B2 (en) * | 2006-12-01 | 2012-01-18 | 前澤工業株式会社 | Sand settling equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5545268A (en) * | 1978-09-27 | 1980-03-29 | Japan Radio Co Ltd | Multi-way multi-access multiplex communication system dependent upon time division |
| JPS60108353U (en) * | 1983-12-26 | 1985-07-23 | 藤井 武夫 | Solids specific gravity sorter |
| JPS63218265A (en) * | 1987-03-04 | 1988-09-12 | Shigehiko Tamagawa | Device for washing ballast with water |
| JPH01143656A (en) * | 1987-11-30 | 1989-06-06 | Hitachi Metals Ltd | Cleaning of sludge |
| JPH0426905A (en) * | 1990-05-18 | 1992-01-30 | Mitsubishi Electric Corp | Magnetic head device |
-
1992
- 1992-12-21 JP JP4356795A patent/JP2504905B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06182252A (en) | 1994-07-05 |
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