JP2008104940A - Waste treatment method - Google Patents
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- JP2008104940A JP2008104940A JP2006289561A JP2006289561A JP2008104940A JP 2008104940 A JP2008104940 A JP 2008104940A JP 2006289561 A JP2006289561 A JP 2006289561A JP 2006289561 A JP2006289561 A JP 2006289561A JP 2008104940 A JP2008104940 A JP 2008104940A
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- 239000002699 waste material Substances 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000009628 steelmaking Methods 0.000 claims abstract description 36
- 229910052742 iron Inorganic materials 0.000 claims abstract description 29
- 239000004033 plastic Substances 0.000 claims abstract description 22
- 229920003023 plastic Polymers 0.000 claims abstract description 22
- 238000003672 processing method Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 17
- 239000010959 steel Substances 0.000 abstract description 17
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 abstract description 2
- 238000003860 storage Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000003923 scrap metal Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910001341 Crude steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
本発明は、廃棄物の処理方法に関し、特に、廃棄物を主原料の鉄屑と同じルートで製鋼用電気炉に投入（装入）することにより、廃棄物の投入、搬入のための特別な中継スペースを不要とし、かつ、製鋼用電気炉への横持ちや投入のハンドリングを容易にし、生産効率を向上させることができる廃棄物の処理方法に関するものである。 The present invention relates to a method for treating waste, and in particular, by introducing (charging) a waste into an electric furnace for steel making through the same route as that of iron scrap as a main raw material, a special method for introducing and carrying in waste. The present invention relates to a waste treatment method that eliminates the need for a relay space, facilitates the horizontal holding and loading of the steelmaking electric furnace, and improves the production efficiency.
例えば、現状の廃プラスチックは、通常のリサイクル可能なものとリサイクル困難物に大別される。
リサイクル困難物の廃プラスチックには、焼却や埋立処分が実施しにくいもの、例えば鉄とプラスチックが分離不能な状態の廃棄物がある。
このようなリサイクル困難物の廃プラスチックについては、現状の処分方法は、一部は焼却されるとしても、ほとんど埋立が主流となっている。
For example, current waste plastics are roughly classified into those that can be recycled and those that are difficult to recycle.
Waste plastics that are difficult to recycle include those that are difficult to incinerate or landfill, for example, waste in which iron and plastic cannot be separated.
For such waste plastics that are difficult to recycle, even if some of the current disposal methods are incinerated, most of them are landfilled.
焼却処分は、完全焼却が不可能で残渣の出るものについては、その残渣を最終処分する必要がある。残渣の最終処分は埋立となり、将来に向けて埋立地の確保が問題となっている。
また、埋立処分は、例えば、鉄とプラスチック等の混合物については、焼却は不可であり、減容せずにそのまま埋立となれば、焼却残渣以上に埋立地の寿命を縮めることになり、将来に向けてのさらなる問題点を内包する。
As for incineration, if the residue cannot be completely incinerated and the residue is generated, the residue must be finally disposed of. The final disposal of the residue becomes landfill, and securing the landfill site is a problem for the future.
In landfill disposal, for example, incineration is not possible for a mixture of iron and plastic. If landfill is performed without reducing the volume, the life of the landfill will be shortened beyond incineration residue. Including further problems toward
そこで、このような処分困難な廃プラスチック類については、製鋼用電気炉による処理が有効であるとされ、一部で実施されている。
例えば、フレキシブルコンテナバッグ等に詰め込まれた廃プラスチックを電気炉へ投入し、アークにより処理することが可能である。
Therefore, it is considered that such plastics that are difficult to dispose of are effectively treated by an electric furnace for steel making, and some of them are implemented.
For example, waste plastic packed in a flexible container bag or the like can be put into an electric furnace and treated with an arc.
ところで、製鋼用電気炉による廃棄物処理は、許認可を受けた製鋼工場にて実施されているが、排出事業者は廃棄物をフレキシブルコンテナバッグ等に入れて排出するため、製鋼用電気炉では、主原料の鉄屑とは別ルートで投入する必要がある。
このため、廃棄物の投入、搬入のために特別な中継スペースを必要とし、かつ、仮置場から電気炉への横持ちや電気炉への投入のハンドリングを煩雑にし、生産効率が悪くなるという問題があった。
By the way, the waste processing by the steelmaking electric furnace is carried out at a licensed steelmaking factory, but the discharge company puts the waste in a flexible container bag and discharges it, so in the steelmaking electric furnace, It is necessary to use a different route from the main raw material scrap.
For this reason, a special relay space is required for the input and transfer of waste, and the handling of the horizontal holding from the temporary storage site to the electric furnace and the input to the electric furnace becomes complicated, resulting in poor production efficiency. was there.
本発明は、上記従来の廃棄物の処理方法が有する問題点に鑑み、廃棄物を主原料の鉄屑と同じルートで製鋼用電気炉に投入することにより、廃棄物の特別な中継場所の確保を不要にするとともに、製鋼用電気炉への横持ちや投入のハンドリングを容易にし、生産効率を向上させることができる廃棄物の処理方法を提供することを目的とする。 In view of the problems of the above-mentioned conventional waste processing methods, the present invention secures a special relay location for waste by introducing the waste into the electric furnace for steel making through the same route as the main raw material iron scrap. It is an object of the present invention to provide a waste treatment method that makes it possible to improve the production efficiency by facilitating the horizontal holding and charging of the steelmaking electric furnace.
上記目的を達成するため、本発明の廃棄物の処理方法は、廃プラスチック等の廃棄物を製鋼用電気炉に投入して処理する廃棄物の処理方法において、廃棄物の周囲を鉄屑で囲むようにプレスして、廃棄物と鉄屑を減容一体化するとともに、該鉄屑と一体化した廃棄物を製鋼用電気炉に投入することを特徴とする。 In order to achieve the above object, the waste processing method of the present invention is a waste processing method in which waste such as waste plastic is put into a steelmaking electric furnace for processing, and the waste is surrounded by iron scraps. The waste and the iron scrap are reduced in volume and integrated, and the waste integrated with the iron scrap is put into an electric furnace for steel making.
本発明の廃棄物の処理方法によれば、廃プラスチック等の廃棄物を製鋼用電気炉に投入して処理する廃棄物の処理方法において、廃棄物の周囲を鉄屑で囲むようにプレスして、廃棄物と鉄屑を減容一体化するとともに、該鉄屑と一体化した廃棄物を製鋼用電気炉に投入することから、廃プラスチック等の廃棄物を、主原料の鉄屑と同じルートで製鋼用電気炉に投入することができ、これにより、廃棄物の特別な中継場所の確保を不要にするとともに、製鋼用電気炉への横持ちや投入のハンドリングを容易にし、生産効率を向上させることができる。 According to the waste processing method of the present invention, in a waste processing method in which waste such as waste plastic is put into a steelmaking electric furnace for processing, the waste is pressed so as to be surrounded by iron scraps. Since waste and iron scrap are reduced in volume and integrated, and the waste integrated with the iron scrap is put into the steelmaking electric furnace, waste plastic and other waste are routed in the same route as the main raw steel scrap. Can be put into the electric furnace for steelmaking, which makes it unnecessary to secure a special relay location for waste, and facilitates the horizontal holding and handling of the steelmaking electric furnace, improving the production efficiency. Can be made.
以下、本発明の廃棄物の処理方法の実施の形態を、図面に基づいて説明する。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a waste treatment method of the present invention will be described with reference to the drawings.
図１に、本発明の廃棄物の処理方法の一実施例を示す。
この廃棄物の処理方法は、廃プラスチック等の廃棄物を製鋼用電気炉に投入して処理する廃棄物の処理方法において、廃棄物の周囲を鉄屑で囲むようにプレスして、廃棄物と鉄屑を減容一体化するとともに、該鉄屑と一体化した廃棄物を製鋼用電気炉に投入する。
この場合、廃棄物は、バラのものを、フレキシブルコンテナバッグや段ボール箱、ドラム缶等の容器に入れた状態で、例えば、三方締めプレス機（図示省略）等により、その外側を鉄屑で巻くようにプレスすることにより、廃棄物を鉄屑と一緒に塊状に減容一体化する。
FIG. 1 shows an embodiment of the waste processing method of the present invention.
This waste treatment method is a waste treatment method in which waste such as waste plastic is put into an electric furnace for steel making and treated, and the waste is pressed so as to be surrounded by iron scrap. The volume of iron scrap is reduced and integrated, and the waste integrated with the steel scrap is put into a steelmaking electric furnace.
In this case, the waste is wrapped in iron scraps with, for example, a three-way fastening press (not shown) in a state where the waste is put in a container such as a flexible container bag, a cardboard box, or a drum can. To reduce the volume of waste together with iron scrap into a lump.
排出事業者からフレキシブルコンテナバッグ入りの荷姿で廃プラスチックが排出された場合、製鋼用電気炉に直接投入することも可能ではあるが、ハンドリングの問題から中間処理として、鉄屑処理業者による、フレキシブルコンテナバッグに入った廃プラスチックを、外側から鉄屑にて囲んでプレスすることによる減容を実施する。
製鋼用電気炉における主原料／鉄屑は、主として、リフティングマグネットクレーンによって荷降ろしや投入が行われるが、このプレスによる減容一体化によって、同じ作業により鉄屑備蓄ヤードを廃棄物処理用中継スペースとして一部使用することができる。
そして、製鋼用電気炉での通常作業である鉄屑を製鋼用電気炉に投入して溶解するという処理工程と同様に、鉄屑と一体化した廃プラスチックをリフティングマグネットクレーンにより製鋼用電気炉に投入し、処理することが可能となる。
If waste plastic is discharged from the discharge company in a flexible container bag, it can be directly put into the steel furnace. The volume of waste plastic contained in the container bag is reduced by enclosing it with iron scraps from the outside and pressing it.
The main raw material / steel scrap in the electric furnace for steel making is mainly unloaded and put in by a lifting magnet crane, but the volume reduction integration by this press allows the scrap scrap storage yard to be connected to the waste disposal yard by the same operation. Can be used as a part.
The waste plastic integrated with the iron scrap is then transferred to the steelmaking electric furnace by the lifting magnet crane in the same manner as the processing step of melting the iron scrap, which is a normal operation in the steelmaking electric furnace, into the steelmaking electric furnace. It is possible to input and process.
鉄とプラスチックが分離不能なリサイクル困難物の廃プラスチックは、従来は、焼却時の残渣問題、埋立地の寿命短縮問題という問題があったが、本実施例の廃棄物の処理方法は、製鋼用電気炉で鉄屑と共に、例えば、２０００℃以上の超高温アーク熱で溶解する処理である。
溶解鋼とスラグ（鉱滓）は、１６５０℃の溶融状態で出鋼された溶解鋼は「鉄鋼材料」にリサイクルされ、抽出されたスラグは冷却後破砕加工し、「再生砕石」や「鉱滓砕石」となり路盤材として再利用が可能である。
よって、本実施例の廃棄物の処理方法では、「燃え殻」や「焼却灰」は発生しないので最終埋立処分を必要としない。
Waste plastics that are difficult to recycle, in which iron and plastic cannot be separated, have previously had the problem of residue during incineration and the problem of shortening the life of landfills. It is the process which melt | dissolves with an ultrahigh temperature arc heat of 2000 degreeC or more with iron scraps in an electric furnace.
Molten steel and slag (mineral steel) are melted at 1650 ° C. The molten steel is recycled into “steel material”, and the extracted slag is crushed after cooling to produce “recycled crushed stone” and “mineralized crushed stone”. It can be reused as roadbed material.
Therefore, in the waste disposal method of the present embodiment, “burning husk” and “incineration ash” are not generated, and therefore no final landfill disposal is required.
なお、本実施例では、廃プラスチックを例としてその処理方法を記載したが、廃プラスチック以外の廃棄物においても、通常の製鋼工程で製造される鋼片に悪影響を及ぼさないものであれば、同様の廃棄物の処理方法は有効である。
前提条件としては廃棄物処理の許認可が必要であるが、多くの廃棄物については製鋼用電気炉での処理が可能であり、全国ベースで製鋼用電気炉を活用することによって廃棄物処理の拡大が可能である。
年間３千万トンの流通量がある鉄屑マーケットには、それを処理する鉄屑業者・製鋼用電気炉（一部高炉）が存在しており、この巨大な既存処理設備を有効利用する方法として、本実施例の廃棄物の処理方法を実施することにより、残渣の出ない完全リサイクル率の向上が可能であるといえる。
一般的には、鋼片に悪影響の出ない範囲は５％程度までの配合といわれており、仮に３千万トンの粗鋼とすれば、最大１５０万トン／年の廃棄物処理が可能である。
In this example, the processing method was described using waste plastic as an example. However, in the case of waste other than waste plastic, as long as it does not adversely affect the steel piece produced in the normal steel making process, the same applies. This waste disposal method is effective.
As a prerequisite, permission for waste disposal is required, but many waste can be treated in steelmaking electric furnaces, and the expansion of waste treatment by utilizing steelmaking electric furnaces on a nationwide basis Is possible.
In the scrap metal market, which has a circulation of 30 million tons per year, there are scrap metal suppliers and steel furnaces (some blast furnaces) that process it. As a result, it can be said that by implementing the waste treatment method of this embodiment, it is possible to improve the complete recycling rate with no residue.
In general, the range that does not adversely affect the steel slab is said to be up to about 5%. If 30 million tons of crude steel is used, it is possible to dispose of waste up to 1.5 million tons / year. .
かくして、本実施例の廃棄物の処理方法によれば、廃プラスチック等の廃棄物を製鋼用電気炉に投入して処理する廃棄物の処理方法において、廃棄物の周囲を鉄屑で囲むようにプレスして、廃棄物と鉄屑を減容一体化するとともに、該鉄屑と一体化した廃棄物を製鋼用電気炉に投入することから、廃プラスチック等の廃棄物を、主原料の鉄屑と同じルートで製鋼用電気炉に投入することができ、これにより、廃棄物の特別な中継場所の確保を不要にするとともに、製鋼用電気炉への横持ちや投入のハンドリングを容易にし、生産効率を向上させることができる。
すなわち、本実施例では、鉄鋼主原料である鉄屑と同じ備蓄ヤードで受入・払出を行い、鉄屑と同様に、リフティングマグネットクレーンを用いてバスケットへの投入、製鋼用電気炉への投入を可能とする。
これにより、廃棄物処理の方法として、鉄屑業者・製鋼用電気炉という既存設備を有効に活用し、廃棄物の減容化・完全リサイクルを実施することができる。
Thus, according to the waste processing method of this embodiment, in the waste processing method in which waste such as waste plastic is put into a steelmaking electric furnace for processing, the waste is surrounded by iron scraps. Pressing to reduce the volume of waste and scrap and integrate it into the electric furnace for steel making, so that waste such as waste plastic can be used as the main raw material scrap Can be put into a steelmaking electric furnace using the same route as this, making it unnecessary to secure a special relay station for waste, making it easier to hold the steelmaking electric furnace and handling it, and producing it. Efficiency can be improved.
In other words, in this example, receipt and withdrawal are performed in the same storage yard as the steel scrap that is the main raw material of steel, and in the same manner as steel scrap, it is put into the basket using a lifting magnet crane and into the electric furnace for steel making. Make it possible.
This makes it possible to effectively utilize existing facilities such as a steel scrap supplier and a steelmaking electric furnace as a waste disposal method, and to reduce the volume and completely recycle the waste.
以上、本発明の廃棄物の処理方法について、その実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、実施例に記載した構成を適宜組み合わせる等、その趣旨を逸脱しない範囲において適宜その構成を変更することができる。
例えば、廃棄物の周囲を囲んでプレスされる鉄屑は、廃棄物と鉄屑を減容一体化することが可能であれば、廃棄物の周囲を部分的に覆う程度で十分である。
As mentioned above, although the waste disposal method of the present invention has been described based on the embodiments thereof, the present invention is not limited to the configurations described in the above embodiments, and the configurations described in the embodiments are appropriately combined. The configuration can be changed as appropriate without departing from the spirit of the invention.
For example, it is sufficient that iron scrap pressed around the waste is partially covered around the waste if the volume of waste and iron scrap can be integrated.
本発明の廃棄物の処理方法は、廃棄物を主原料の鉄屑と同じルートで製鋼用電気炉に投入することにより、廃棄物の特別な中継場所の確保を不要にするとともに、製鋼用電気炉への横持ちや投入のハンドリングを容易にし、生産効率を向上させるという特性を有していることから、製鋼用電気炉を利用して廃棄物の処理を行う用途に広く好適に用いることができる。 The waste processing method of the present invention makes it unnecessary to secure a special relay place for waste by introducing the waste into a steelmaking electric furnace through the same route as the main raw steel scrap. Because it has the characteristics of facilitating the horizontal holding and charging of the furnace and improving the production efficiency, it can be used widely and suitably for applications in which waste is processed using a steelmaking electric furnace. it can.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015021177A (en) * | 2013-07-22 | 2015-02-02 | 共英製鋼株式会社 | Method of using scrap wood containing carbon fiber |
| CN109628682A (en) * | 2018-12-18 | 2019-04-16 | 武汉科技大学 | A kind of Efficient utilization method of waste plastic particle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003034826A (en) * | 2001-07-25 | 2003-02-07 | Nkk Corp | Iron source raw material for iron manufacture |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003034826A (en) * | 2001-07-25 | 2003-02-07 | Nkk Corp | Iron source raw material for iron manufacture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015021177A (en) * | 2013-07-22 | 2015-02-02 | 共英製鋼株式会社 | Method of using scrap wood containing carbon fiber |
| CN109628682A (en) * | 2018-12-18 | 2019-04-16 | 武汉科技大学 | A kind of Efficient utilization method of waste plastic particle |
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