JPH11335747A - Treatment of waste car and waste house electric appliance - Google Patents
Treatment of waste car and waste house electric applianceInfo
- Publication number
- JPH11335747A JPH11335747A JP13791898A JP13791898A JPH11335747A JP H11335747 A JPH11335747 A JP H11335747A JP 13791898 A JP13791898 A JP 13791898A JP 13791898 A JP13791898 A JP 13791898A JP H11335747 A JPH11335747 A JP H11335747A
- Authority
- JP
- Japan
- Prior art keywords
- waste
- dust
- furnace
- melting furnace
- melting
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、大量生産品の廃
品、すなわち使用済み自動車、または使用済みの洗濯
機、冷蔵庫等の家電機器の処理方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating a mass-produced waste product, that is, a used automobile or a used household appliance such as a washing machine and a refrigerator.
【０００２】[0002]
【従来の技術】多量生産品の廃品、例えば使用済み自動
車（廃車）は、自動車解体業者によりまず部分的に解体
され、その際、廃車から、例えば次のものが除去され
る。すなわち、油、制動液又は冷却液のような動作物
質、機関及び伝動装置、その他のアルミニウム部品及び
軽金属部品、場合によつては排気ガス触媒、蓄電池、ケ
ーブルハーネス、設置された電動機及び発電機、タイ
ヤ、特定の熱可塑性プラスチックから成り、かつ適当に
選び出されて容易に解体可能で種類に応じて分類されて
再使用可能な材料の大きいプラスチツク部品。これらの
物質又は部品は、別個に廃棄処分されるか、処理される
か、又は再利用されるが、すべての自動車解体業者の所
で上記したすべての部品が解体・除去されるものではな
い。2. Description of the Related Art Mass-produced scraps, for example used cars (disused cars), are first partially dismantled by a car dismantling company, at which time the following are removed, for example. Operating substances such as oil, brake fluid or cooling fluid, engines and transmissions, other aluminum and light metal parts, possibly exhaust gas catalysts, storage batteries, cable harnesses, installed motors and generators, Tires, large plastic parts made of a specific thermoplastic and made of suitably selected, easily dismantled, categorized and reusable materials. These materials or parts are separately disposed of, disposed of, or reused, but not all parts mentioned above are dismantled and removed at all car dismantling companies.
【０００３】このように部分解体された廃車は、従来、
通常、シュレッダーマシンにより小片にされる。使用済
みの洗濯機、洗濯物乾燥機、食器洗い機、冷蔵庫等の使
用済み家電機器についても、同様の処理が行われてい
る。上記小片は磁力・振動篩等により鉄屑とＡｌ等の非
鉄金属屑に選別回収され、最後にはシュレッダーダスト
と呼ばれる混合塵が残り、その全てが埋め立て処理され
ている。この鉄屑は、主にＺｎまたはＺｎ−Ｎｉ合金め
つきされた深絞り表面処理鋼板部品の小片からなるが、
鍛造される鍛造部品、ねずみ鋳鉄部品及び鋳鋼部品、焼
入れ合金鋼から成る部品等の小片も含んでいる。[0003] A scrapped vehicle partially disassembled in this manner has conventionally been
Usually, the pieces are shredded by a shredder machine. Similar processing is performed on used home appliances such as used washing machines, laundry dryers, dishwashers, refrigerators and the like. The small pieces are separated and collected into iron scraps and non-ferrous metal scraps such as Al by a magnetic force / vibration sieve or the like. Finally, mixed dust called shredder dust remains, and all of them are landfilled. This iron scrap mainly consists of small pieces of deep drawn surface treated steel sheet parts coated with Zn or Zn-Ni alloy,
It also includes small pieces such as forged parts, gray iron parts and cast steel parts to be forged, parts made of hardened alloy steel.
【０００４】また、シュレッダーダストは、主にシート
もしくはインパネからの樹脂、繊維、もしくは発泡ウレ
タン等の有機物質、およびガラス、セラミックス等の無
機物質からなるが、鉛、水銀等の有害な重金属も含んで
いる。このシュレッダーダストは、これまで安定型の処
分場に埋め立てられていたが、鉛等の重金属を微量なが
ら含んでいるため、鉛等の有害な重金属の流出・溶出の
危険があるという理由で、平成８年４月より管理型埋め
立てへの移行が義務付けられた。また、このシュレッダ
ーダストの嵩密度は０．１〜０．３トン/m3 程度と低
く、その輸送・埋め立て時における効率が悪かった。[0004] Shredder dust is mainly composed of organic substances such as resin, fiber or urethane foam from sheets or instrument panels, and inorganic substances such as glass and ceramics, but also contains harmful heavy metals such as lead and mercury. In. Until now, this shredder dust was landfilled in a stable disposal site, but because it contains trace amounts of heavy metals such as lead, there is a danger that harmful heavy metals such as lead will flow out and elute. From April 2008, the transition to managed landfill was compulsory. Moreover, the bulk density of this shredder dust was as low as about 0.1 to 0.3 ton / m 3 , and its efficiency during transportation and landfill was poor.
【０００５】さらに、我が国で発生する廃車（使用済み
自動車）の数量は、５００万台、５００万トンで、その
シュレッダーダストの数量は年間１２０万トンに達して
いる。しかし、埋め立て処理は用地難からだんだん難し
くなっている。そこで、シュレッダーダストを分別・減
容固化・乾溜し、容積を１／５に圧縮することが検討さ
れている。部分解体された廃車をシュレッダーにかけて
処理することは、高価な工程となり、さらにシュレッダ
ーダストの容積を圧縮処理することは、非常に高価な工
程となるので、これらを省略して効果的にリサイクル回
収する技術が望まれている。[0005] Furthermore, the number of end-of-life vehicles (used vehicles) generated in Japan is 5 million units and 5 million tons, and the amount of shredder dust reaches 1.2 million tons annually. However, landfills are becoming increasingly difficult due to land shortages. Therefore, it has been studied to separate, shrink and solidify shredder dust to reduce the volume to 1/5. Shredding the partially disassembled waste car is an expensive process, and compressing the shredder dust volume is an extremely expensive process. Technology is desired.
【０００６】これに対し、特開平５−２２２４２４号公
報に、 使用ずみ車両又は屑金を含む使用ずみ機器から、別個
に再利用可能又は処理可能な有益物質、危険物質又は鋼
の回収を妨げるか、もしくは鋼の性質に悪影響を及ぼす
物質を除去し、このように部分的に解体されるけれど
も、最初は車両又は機器に組込まれるか又は取付けられ
ていた有機及び無機非金属材料（以下単に付随物質とい
う）製の部品又は物質の大部分をまだ含んでいる使用ず
み車両又は使用ずみ機器を、それに含まれている鋼屑の
回収のため準備し、付随物質を廃棄処分し、高炉又はキ
ューポラ（以下立炉という）において、化学的に還元を
行いかつスラグを形成する融剤を添加して鋼屑を溶融す
る廃棄処分方法において、使用ずみ車両又は使用ずみ機
器の鋼屑と一緒に付随物質を立炉へ入れることにより、
付随物質を鋼屑又は鉄鉱石に含まれる鉄酸化物と化学反
応させ、入れられる付随物質を、化学的に還元を行いか
つスラグを形成する融剤として利用して、コークス、油
又はガスのような、この目的のための従来の融剤を少な
くとも一部補うことを特徴とする、使用ずみ車両又は使
用ずみ機器をその役目終了後廃棄処分する方法、 部分的に解体された使用ずみ車両又は使用ずみ機器
を、それらに含まれる付随物質と一緒に屑金プレスで結
束し、これらの結束屑金を立炉へ入れることを持徴とす
る、上記に記載の方法、が提案されている。[0006] On the other hand, Japanese Patent Application Laid-Open No. 5-222424 discloses a method for preventing the recovery of useful substances, dangerous substances or steel which can be separately reused or treated from used vehicles or used equipment including scrap metal. Or organic and inorganic non-metallic materials that are initially incorporated or attached to a vehicle or equipment, but which remove materials that adversely affect the properties of the steel and are thus partially dismantled Used vehicles or used equipment that still contain most of the parts or materials manufactured by blast furnaces or cupolas (hereinafter referred to as blast furnaces or cupolas). In a waste disposal method that melts steel chips by adding a flux that chemically reduces and forms slag in a standing furnace, together with steel scrap from used vehicles or used equipment. By putting incidental substances into the furnace,
Ancillary substances are chemically reacted with iron oxides contained in steel scrap or iron ore, and the entrained incidental substances are used as a flux for chemically reducing and forming slag, such as coke, oil or gas. A method of disposing of used vehicles or used equipment after the end of their role, characterized by at least partially supplementing conventional fluxes for this purpose; partially dismantled used vehicles or uses A method as described above is proposed, which comprises binding the pre-mounted devices together with the accompanying substances contained in them in a scrap metal press and placing these untied scraps in a furnace.
【０００７】これらの処理方法によれば、次の利点があ
ると同公報に記載されている。有機車両付随物質の環境
を保護する廃棄処分、集積すべき塵芥量の減少、従って
塵芥集積場の負担軽減、燃焼させるべき塵芥量の減少、
従って塵芥燃焼設備の負担軽減、鋼溶融の際化学的還元
を行うか又は溶融エネルギを供給するコークス、油又は
ガスのような従来の融剤の資源の保護、全体として少な
い二酸化炭素発生のため環境の保護、有機及び無機の非
金属付随物質と鋼屑との化学反応の際生ずる廃ガスの浄
化のため、鉱石製錬のため又は屑金から鋼或いは鋳鉄を
取得するための立炉設備にいずれにせよ設置される廃気
浄化設備の利用、部分的に解体される使用ずみ車両又は
使用ずみ機器の費用がかかる破砕の省略（これらは効率
的にかつ安価に結束される）、鋼屑及びその他の付随物
質の同様に費用がかかる分類又は分離の省略、特に車両
用の既存の解体設備において生ずる有機及び無機の非金
属付随物質から成る破砕塵芥のため又は別のやり方で集
められるか或いは生ずるプラスチツク屑又はエラストマ
屑、特に古タイヤのため環境を保護する受入れ可能な廃
棄処分通路の開放。According to the above publication, there are the following advantages according to these processing methods. Disposal of organic vehicle ancillary substances to protect the environment, reduce the amount of refuse to be collected, and thus reduce the burden on refuse collection sites, reduce the amount of refuse to be burned,
Therefore, the burden on refuse combustion facilities is reduced, the resources of conventional fluxes, such as coke, oil or gas, which perform chemical reduction or supply melting energy when melting steel, and reduce the overall carbon dioxide emissions, For the protection of wastewater, the purification of waste gas generated during the chemical reaction of organic and inorganic non-metallic incidental substances with steel scrap, ore smelting, or the installation of furnaces to obtain steel or cast iron from scrap metal. Use of waste air purification equipment installed anyway, elimination of costly crushing of partially dismantled used vehicles or used equipment (they can be bound efficiently and cheaply), steel chips and other Omission of similarly expensive classification or separation of incidental substances of the same, especially for crushed debris consisting of organic and inorganic non-metallic incidental substances occurring in existing demolition equipment for vehicles or otherwise collected or Cunning plastic scrap or elastomeric debris, especially the opening of an acceptable waste disposal passage to protect the environment for the old tires.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、上記従
来の提案法は、溶融・還元の熱源・還元源として高価な
コークス、油又はガスを用いる高炉、キューポラ等の竪
型炉を活用するものであり、上記熱源・還元源として高
価なコークス、油又はガスの一部が廃車の有機物質に置
換されても、溶銑製造コスト的には高価であるという難
点がある。更に、高炉、キューポラ等の竪型炉内に装入
された廃車のＺｎまたはＺｎ−Ｎｉ合金めっきされた深
絞り表面処理鋼板部品から蒸発したＺｎ蒸気が炉内に凝
固・蓄積・堆積していき、ついに安定操業が困難となる
という致命的な問題がある。However, the above-mentioned conventional method utilizes a vertical furnace such as a blast furnace or cupola using expensive coke, oil or gas as a heat source and a reduction source for melting and reduction. However, even if a part of the expensive coke, oil or gas as the heat source / reduction source is replaced with the organic substance of the scrap car, there is a problem that the cost of producing hot metal is high. Furthermore, Zn vapor evaporated from Zn or Zn-Ni alloy-plated deep drawn surface treated steel sheet parts of a scrap car charged in a vertical furnace such as a blast furnace or a cupola solidifies, accumulates and accumulates in the furnace. Finally, there is a fatal problem that stable operation becomes difficult.
【０００９】本発明の第一の目的は、部分解体された
廃車または廃家電機器をシュレッダー処理することな
く、安価な熱源の石炭を用い、かつ安定的に溶解処理
し、その際に上記廃車または廃家電機器の有機物質（可
燃焼分）を溶解熱源の一部として活用し、廃車の鉄分、
非鉄金属（Ｃｕ、Ｎｉ、Ｃｒ、Ｓｎ等）を製鋼原料の溶
銑に、ガラス、セラミックス等の無機物質、非鉄金属の
Ａｌを路盤材原料の溶滓にすると共に、Ｚｎ、Ｐｂ、
Ｃｄ、Ｈｇ、Ｓｂ等の有害な重金属を含む廃棄物を大幅
に減容化する方法を提供することにある。A first object of the present invention is to stably dissolve a partially disassembled scrap car or a household electrical appliance without using shredder processing and using coal of an inexpensive heat source. Utilizing the organic substances (combustible components) of waste home appliances as a part of the heat of melting,
Non-ferrous metals (Cu, Ni, Cr, Sn, etc.) are used as hot metal for steelmaking raw materials, inorganic materials such as glass and ceramics, and non-ferrous metal Al are used as slag for roadbed material, and Zn, Pb,
It is an object of the present invention to provide a method for significantly reducing the volume of waste containing harmful heavy metals such as Cd, Hg, and Sb.
【００１０】また、本発明の第二の目的は、上記に加
えて、上記のＺｎ、Ｐｂ、Ｃｄ、Ｈｇ、Ｓｂ等の有害
な重金属を含む廃棄物を金属Ｚｎの含有率が５０％以上
のものとし、有価金属として回収する方法を提供する
ものである。さらに、本発明の第三の目的は、上記の
安価熱源の石炭の一部もしくは全部を、石炭より安価な
廃タイヤに置換して、更に安価かつ安定的に部分解体
された廃車または廃家電機器を溶解処理する方法を提供
するものである。A second object of the present invention is to further reduce the above-mentioned waste containing harmful heavy metals such as Zn, Pb, Cd, Hg and Sb by reducing the content of metallic Zn to 50% or more. The present invention provides a method of recovering valuable metals. Further, a third object of the present invention is to replace a part or all of the coal of the above-mentioned inexpensive heat source with waste tires cheaper than coal, and to further inexpensively and stably partially disassemble waste cars or waste home appliances. Is provided.
【００１１】[0011]
【課題を解決するための手段】本発明の要旨は次の通り
である。 （１）使用ずみ自動車又は使用済み家電機器から、別個
に再利用可能又は処理可能な有益物質、危険物質又は鋼
の回収を妨げるかもしくは鋼の性質に悪影響を及ぼす物
質を除去し、このように部分的に解体されるけれども、
最初は自動車又は家電機器に組込まれるか又は取付けら
れていた、有機非金属材料又は有機非金属材料及び無機
非金属材料製の部品又は物質の大部分をまだ含んでい
る、使用ずみ自動車又は使用ずみ家電機器を、種湯の存
在する溶解炉内に供給すると共に、石炭、酸素を供給
し、上記使用ずみ自動車又は使用ずみ家電機器を溶解し
て高〔Ｃ〕溶融鉄を得ると共に、溶解炉排ガス中のダス
トを湿式集塵し回収することを特徴とする使用済み自動
車又は使用済み家電機器の溶解処理方法。 （２）回収ダストを溶解炉に再使用することを特徴とす
る上記（１）に記載の方法。 （３）回収ダストを予備還元炉で高温で予備還元後、溶
解炉に再使用すると共に、予備還元炉の飛灰を回収する
ことを特徴とする上記（１）に記載の方法。 （４）溶解炉内に供給する石炭を廃タイヤに置換するこ
とを特徴とする上記（１）〜（３）に記載の方法。The gist of the present invention is as follows. (1) removing from the used automobiles or end-of-life appliances any beneficial substances, hazardous substances or substances which hinder the recovery of steel or which adversely affect the properties of the steel, which may be separately reusable or treatable; Although it is partially dismantled,
A used vehicle or used that still contains most of the parts or materials made of organic non-metallic materials or organic non-metallic and inorganic non-metallic materials that were originally incorporated or attached to automobiles or household appliances While supplying home appliances into the melting furnace where the seed water is present, coal and oxygen are supplied, and the used automobile or used home appliances are melted to obtain high [C] molten iron and the melting furnace exhaust gas. A method for dissolving used automobiles or used home appliances, wherein wet dust is collected and collected. (2) The method according to the above (1), wherein the collected dust is reused in a melting furnace. (3) The method according to the above (1), wherein the collected dust is preliminarily reduced in a preliminarily reducing furnace at a high temperature, then reused in a melting furnace, and fly ash from the preliminarily reducing furnace is collected. (4) The method according to (1) to (3), wherein the coal supplied into the melting furnace is replaced with waste tires.
【００１２】[0012]
【発明の実施の形態】以下、本発明について、詳細に説
明する。図１、２、３は、本発明の請求項１、２、３に
係る発明の実施形態例を示すプロセスフロー図を示すも
のである。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. FIGS. 1, 2, and 3 show a process flow diagram showing an embodiment of the invention according to claims 1, 2, and 3 of the present invention.
【００１３】図１において、１は溶解炉で、種湯の存在
する炉内に含鉄冷材、酸素、石炭を連続供給し、高炭素
溶融鉄を得る。上記含鉄冷材の一部又は全部として、部
分解体されるが、有機非金属材料又は有機非金属材料及
び無機非金属材料を含んでいる廃車を使用する。溶解炉
１において得た高炭素溶融鉄は、これを原料として別の
精錬炉で酸素吹錬することにより所要成分の溶鋼を得
る。この際、溶解炉において上記精錬炉での所要精錬量
と溶解炉での所要種湯量の合計量を得、溶解炉から精錬
炉での所要精錬量の高炭素溶融鉄を１回の出湯にて酸素
精錬に供する一方、高炭素溶融鉄の残部種湯量を溶解炉
に残して含鉄冷材溶解のための種湯として使用する。In FIG. 1, reference numeral 1 denotes a melting furnace which continuously supplies iron-containing cold material, oxygen, and coal into a furnace in which seed water is present to obtain high-carbon molten iron. As part or all of the iron-containing cold material, a scrap car that is partially decomposed but contains an organic nonmetal material or an organic nonmetal material and an inorganic nonmetal material is used. The high-carbon molten iron obtained in the melting furnace 1 is used as a raw material and subjected to oxygen blowing in another refining furnace to obtain molten steel of a required component. At this time, in the smelting furnace, the total amount of the required smelting amount in the smelting furnace and the required amount of the seed metal in the smelting furnace is obtained. While being subjected to oxygen refining, the remaining amount of the high carbon molten iron seed metal is left in the melting furnace and used as seed metal for melting the iron-containing cold material.
【００１４】２は溶解中の溶解炉１の排ガスを湿式集塵
する湿式集塵機で、集塵後の排ガスを燃料ガスとして回
収する。３は上記湿式集塵機２の集塵水からダストを減
容廃棄物として分離・回収するフィルタープレスを示
す。Reference numeral 2 denotes a wet dust collector for wet-collecting the exhaust gas from the melting furnace 1 during melting, and collects the exhaust gas after dust collection as a fuel gas. Reference numeral 3 denotes a filter press for separating and recovering dust from the collected water of the wet dust collector 2 as waste with reduced volume.
【００１５】上記溶解炉１としては、例えば、転炉型、
横長回転炉型が採用できる。このような溶解炉は排ガス
回収設備を有し、排ガス回収に際し、湿式で排ガスを集
塵・冷却する装置を有している。さらに転炉型は、酸素
底吹転炉、酸素上吹転炉、酸素上底吹転炉を使用でき、
例えば、酸素上吹ランスを有し、炉底に羽口を有し、石
炭を非酸化性搬送ガス（例えば窒素ガス）と共に吹込む
ことができるように構成された酸素上吹転炉を使用する
ことができる。As the melting furnace 1, for example, a converter type,
Horizontal rotating furnace type can be adopted. Such a melting furnace has an exhaust gas recovery facility, and has a device for collecting and cooling the exhaust gas in a wet manner at the time of exhaust gas recovery. In addition, the converter type can use an oxygen bottom blowing converter, an oxygen top blowing converter, and an oxygen top blowing converter.
For example, using an oxygen top blowing converter having an oxygen top blowing lance, a tuyere at the bottom of the furnace, and configured to be able to inject coal with a non-oxidizing carrier gas (eg, nitrogen gas). be able to.
【００１６】高炭素溶融鉄は、製品トランプエレメント
規制から〔Ｃｕ〕max ＜０．３５％が好ましい。従っ
て、部分解体（有価部品等除去）時、特開平１０−１６
８４１号公報に提案されるように、タイヤ、バッテリ
ー、燃料タンク、エンジン、懸架装置等の主要部品を除
去するだけでなく、モーター、銅線を合成樹脂（塩化ビ
ニール）で被覆したハーネスを除去しておくのが望まし
い。上記公報には、モーター、ハーネスを除去後、シュ
レッダー処理し、ダストを除いたシュレッダー屑を高周
波溶解炉で溶解した結果、〔Ｃｕ〕max ＜０．３５％を
満足することが開示されている。The high-carbon molten iron preferably has a [Cu] max <0.35% from the viewpoint of the product playing card element. Therefore, when a partially disassembled body (removal of valuable parts, etc.) is used,
As proposed in Japanese Patent Publication No. 841, Japanese Patent Laid-Open Publication No. 841, not only removes main parts such as tires, batteries, fuel tanks, engines and suspensions, but also removes harnesses in which motors and copper wires are covered with synthetic resin (vinyl chloride). It is desirable to keep. The above-mentioned publication discloses that after removing the motor and the harness, the shredder is subjected to shredder treatment, and the shredder dust excluding dust is melted in a high-frequency melting furnace to satisfy [Cu] max <0.35%.
【００１７】また、部分解体（有価部品等除去）時、ド
ア、フロント、リアのガラスを除去しておくことが、ガ
ラスのリサイクル（カレットとして再利用）、溶滓量を
減少する上で望ましい。さらに、鉛源としてのバッテリ
ー、ラジエーター、ケーブル端子、鉛製ホイールバラン
サー、ターン製燃料タンク等は、除去していることが望
ましい。Further, it is desirable to remove the glass of the door, front, and rear during the partial disassembly (removal of valuable parts and the like) in order to recycle the glass (reuse as cullet) and reduce the amount of slag. Further, it is desirable that a battery, a radiator, a cable terminal, a lead wheel balancer, a turn fuel tank, and the like as a lead source be removed.
【００１８】部分解体（有価部品等除去）後の廃車は、
一般に大きな容積をもち、そのままでは輸送、保管、溶
解炉装入等が容易でない。そのためスクラッププレス機
で押し潰しブロック状にして、輸送、保管、溶解炉装入
を容易にするのが望ましい。The scrapped vehicle after the partial disassembly (removal of valuable parts etc.)
In general, it has a large volume, and it is not easy to transport, store, and load into a melting furnace as it is. Therefore, it is desirable to make it into a crushed block shape with a scrap press machine to facilitate transportation, storage and charging in a melting furnace.
【００１９】図１の処理プロセスによれば、以下の〜
の作用効果がある。 石炭使用量の減少 部分解体（有価部品等除去）後の廃車は、言い換える
と、シュレッダー屑とシュレッダーダストとの混合物で
ある。シュレッダーダストは主に有機および無機の非金
属物質から成り、その発生量は廃車全重量の２５〜３０
％にも及んでいる。また、シュレッダーダスト中の可燃
物の発熱量は、約４０００kcal/kg ダストを有している
ことが報告されている。したがって、冷鉄源（含鉄冷
材）として、有機物質を含む廃車使用量が増すと、それ
に応じて可燃物が溶解炉内にもたらされ、溶解炉内に吹
き込まれる酸素と可燃物とが反応発熱してくる。すなわ
ち、溶解炉の熱源として用いている石炭の使用量は自ず
と減少せしめることができる。冷鉄源（含鉄冷材）とし
ての有機物質を含む廃車使用比率と溶解炉の石炭原単位
との関係を図４に示す。有機物質を含む廃車使用比率を
高めて行くほど、溶解炉での石炭原単位は低下してく
る。According to the processing process of FIG.
Has the effect. Decrease in coal consumption The scrapped vehicle after the partial decomposition (removal of valuable parts etc.) is, in other words, a mixture of shredder waste and shredder dust. Shredder dust is mainly composed of organic and inorganic non-metallic substances, and its generation amount is 25-30% of the total weight of scrapped vehicles.
%. It is also reported that the calorific value of the combustibles in the shredder dust is about 4000 kcal / kg dust. Therefore, as the amount of used scrap containing organic substances increases as a cold iron source (iron-containing cold material), combustibles are brought into the melting furnace in response to the reaction between the oxygen blown into the melting furnace and the combustibles. Fever. That is, the amount of coal used as the heat source of the melting furnace can be reduced naturally. FIG. 4 shows the relationship between the usage ratio of scrap cars containing organic substances as the cold iron source (iron-containing cold material) and the unit consumption of coal in the melting furnace. The higher the percentage of end-of-life vehicles containing organic substances, the lower the unit consumption of coal in the melting furnace.
【００２０】ダイオキシンの発生を防止 ダイオキシン生成の反応機構の詳細はまだほとんど判っ
ていないが、種々の文献に報告されている実験結果を総
合すると、構成する元素の存在（塩素、炭素、酸素）、
生成しやすい温度、触媒（金属類）の存在が、その生成
に深く関わっていることが知られている。文献によれ
ば、最も生成しやすい温度域は、２５０〜６００℃程度
であり、７００℃以上ではダイオキシンは分解してしま
うことも調査されている。したがって、図１のプロセス
では、廃車中の塩化ビニール等は溶解炉内にて１５００
℃以上の高温で燃焼し、ダイオキシンは分解し、９００
℃程度の排ガスは湿式集塵機にて１００℃以下に急冷さ
れ、ダイオキシンを再合成せずにすむことになる。Prevention of generation of dioxin Although the details of the reaction mechanism of dioxin formation have not yet been elucidated, the results of experiments reported in various literatures indicate that the presence of constituent elements (chlorine, carbon, oxygen),
It is known that the temperature at which it is easily formed and the presence of a catalyst (metals) are deeply involved in its formation. According to the literature, the temperature range in which generation is most likely is about 250 to 600 ° C., and it has been investigated that dioxin is decomposed at 700 ° C. or higher. Therefore, in the process shown in FIG.
Combustion at a high temperature of over ℃, dioxin decomposes,
Exhaust gas of about ° C. is rapidly cooled to 100 ° C. or less by a wet dust collector, so that dioxin need not be resynthesized.
【００２１】廃車成分の中の有害元素は主に溶解炉ダ
ストへ移行し、廃棄物を減容化 廃車成分中、溶銑に残留しやすい元素、スラグへ移行し
やすい元素、ダストになる元素は、各元素の沸点や酸化
されやすさ等の、物質固有の熱力学的な数値から予測可
能である。銅、ニッケル、錫等は鉄に比べ酸化されにく
く、かつ、蒸発しにくいため溶銑中へ残留しやすい。ク
ロムやマンガンは鉄と同様に酸化される傾向にあるの
で、一部は溶銑へ一部はスラグへ残留する。また、塩素
もスラグ中のカルシウムと結びつきやすく、スラグへ一
部残留する。アルミやシリコンは鉄よりも酸化されやす
く、その大半がスラグ成分へ変化する。亜鉛、鉛、アン
チモン等の環境に与える影響の大きい有害元素は鉄より
もはるかに蒸発しやすいため、ダストとなる。シュレッ
ダー処理後のダストの容積を１とし、図１のプロセスの
廃棄物であるダストの容積変化に着目して整理すると表
１のようになる。The harmful elements in the scrap car components are mainly transferred to the melting furnace dust and the volume of the waste is reduced. In the scrap car components, the elements that easily remain in the hot metal, the elements that easily shift to the slag, and the elements that become dust are: It can be predicted from thermodynamic numerical values inherent to the substance, such as the boiling point of each element and the ease of oxidation. Copper, nickel, tin and the like are less likely to be oxidized than iron and are less likely to evaporate because they are less likely to evaporate. Since chromium and manganese tend to be oxidized in the same way as iron, some remain in the hot metal and some remain in the slag. Chlorine is also easily linked to calcium in the slag and remains partially in the slag. Aluminum and silicon are more easily oxidized than iron, and most of them change to slag components. Harmful elements, such as zinc, lead, and antimony, which have a large effect on the environment, are much easier to evaporate than iron, and thus become dust. The volume of the dust after the shredder treatment is set to 1, and as shown in Table 1, the volume of the dust as the waste in the process of FIG.
【００２２】[0022]
【表１】 [Table 1]
【００２３】図２は、図１のフィルタープレス２により
分離・回収したダストを溶解炉１に再使用（リサイク
ル）し、この再使用（リサイクル）を複数回実施して、
Ｚｎ等の重金属が濃縮されたダスト（以下、Ｚｎ濃縮ダ
ストという）をフィルタープレス３から有価物質として
回収する処理プロセスを示す。このプロセスの場合、ダ
ストのまま炉内種湯中に吹込むか、ペレット、ブリケッ
ト等に塊成化して溶解炉の炉口から連続装入する。上記
図２の処理プロセスにおいても、前述の図１のプロセス
と同様に３つの効果が発現するとともに、表１に併記し
たように、ダストの再使用を繰り返すことで亜鉛や鉛の
濃縮を達成できる。FIG. 2 shows that the dust separated and recovered by the filter press 2 of FIG. 1 is reused (recycled) in the melting furnace 1 and this reuse (recycle) is performed a plurality of times.
A process for collecting dust in which heavy metals such as Zn are concentrated (hereinafter referred to as Zn-concentrated dust) as a valuable substance from the filter press 3 will be described. In the case of this process, the dust is blown into the furnace seed water as it is, or agglomerates into pellets, briquettes, etc., and is continuously charged from the furnace port of the melting furnace. In the treatment process of FIG. 2 as well, three effects are exhibited similarly to the process of FIG. 1 described above, and as shown in Table 1, the concentration of zinc and lead can be achieved by repeating the reuse of dust. .
【００２４】図３は、図２のフイルタープレス２により
分離・回収したダストの溶解炉１への再使用（リサイク
ル）に際して、予備還元炉４により予備還元して、予備
還元ダストとして溶解炉１に再使用（リサイクル）する
と共に、予備還元炉４の排ガスのＺｎ等濃縮ダストを、
バグフィルター等により有価物質として分離・回収する
処理プロセスを示す。石炭を内装したペレット、ブリケ
ット等の塊成物については、特公平３−６０８８３号公
報に開示されるような、回転炉床式予備還元炉で予備還
元する方式で、ダストについては、ロータリーキルン炉
で予備還元する方式が適用できる。FIG. 3 shows that when the dust separated and recovered by the filter press 2 of FIG. 2 is reused (recycled) in the melting furnace 1, the dust is preliminarily reduced by the pre-reduction furnace 4 and is returned to the melting furnace 1 as pre-reduced dust. In addition to reuse (recycling), concentrated dust such as Zn in the exhaust gas of the preliminary reduction furnace 4 is
This shows the process of separating and recovering valuable materials using a bag filter or the like. Agglomerates such as pellets and briquettes containing coal are preliminarily reduced by a rotary hearth type prereduction furnace as disclosed in Japanese Patent Publication No. 60883/1991, and dust is obtained by a rotary kiln furnace. Preliminary reduction is applicable.
【００２５】上記図３のプロセスにおいても、前述の溶
解炉において廃車を溶解するプロセスの場合と同様な３
つの効果が発現するとともに、予備還元時に亜鉛、鉛等
が蒸発・飛灰として回収されるから、表１に併記したよ
うに、ダストの再使用を繰り返すことなく、高濃度の亜
鉛や鉛を回収できる。また、予備還元後のダストは酸化
鉄分が僅かとなっているので、溶解炉の石炭原単位の低
減や生産性の向上等が達成できる。In the process of FIG. 3 as well, the same process as in the process of melting a scrap car in the melting furnace described above is performed.
As shown in Table 1, high concentrations of zinc and lead can be recovered without reusing dust, as zinc and lead are recovered as evaporation and fly ash during preliminary reduction. it can. Further, since the dust after the preliminary reduction has a small amount of iron oxide, it is possible to achieve a reduction in the unit consumption of coal in the melting furnace, an improvement in productivity, and the like.
【００２６】さらに、図１〜３のプロセスにおいて、廃
車溶解時に使用している石炭の代わりに廃タイヤを用い
ることもできる。廃タイヤはその大半がゴム質でできて
おり、鉄分が１０数％、炭素分が７０数％とその発熱量
は大きい。従って、例えば、廃車使用比率１００％にお
いて、廃タイヤを溶解時に約９０kg/ton使用すると、図
５のように、石炭を使用せずとも熱源が確保される利点
がある。Further, in the processes of FIGS. 1 to 3, waste tires can be used in place of coal used at the time of melting a waste vehicle. Most of the waste tires are made of rubber, and have a large calorific value with an iron content of about 10% and a carbon content of about 70%. Therefore, for example, when about 90 kg / ton of waste tire is used at the time of melting at a waste vehicle use ratio of 100%, there is an advantage that a heat source can be secured without using coal as shown in FIG.
【００２７】[0027]
【実施例】（実施例１）１００トン規模の転炉を改造し
て、溶融鉄の存在する上記転炉内に含鉄冷材を供給し、
炉内に炭材を吹き込むと共に酸素を供給し含鉄冷材を溶
解し溶融鉄を得る含鉄冷材の溶解方法を実施した。この
際に冷鉄源として部分解体後、有機非金属物質及び無機
非金属物質を含んだままプレスした廃車屑を使用した。
具体的な、溶解手順や操業条件は以下の通りである。(Example 1) A converter with a scale of 100 tons was modified to supply iron-containing cold material into the converter in which molten iron was present.
A method of melting the iron-containing cold material was performed in which the carbon material was blown into the furnace and oxygen was supplied to melt the iron-containing cold material to obtain molten iron. At this time, scrap car scrap pressed after being partially decomposed as a cold iron source and containing an organic nonmetallic substance and an inorganic nonmetallic substance was used.
Specific melting procedures and operating conditions are as follows.
【００２８】前ヒートの種湯１００トンおよび溶融スラ
グ１０トンが存在する転炉（上吹きランスおよび６本の
底吹き羽口を装備）において、炉を正立させたままの状
態で酸素上吹を開始して、炉上から上記廃車屑９０トン
（鉄分比率７０％）を連続添加して、約６０トンの溶鉄
を製造した。この際６本の底吹き羽口から、１．５mm以
下の粒度の無煙炭を窒素ガスをキャリアーガスとして平
均２５０kg/minの速度で吹込んだ。なお、上吹きランス
からの酸素供給流量は２４０００Nm3 /hr である。In a converter (equipped with an upper blowing lance and six bottom tuyeres) in which 100 tons of seed water and 10 tons of molten slag from the previous heat are present, oxygen is blown upward while the furnace is kept upright. Was started and 90 tons of the scrap car scrap (iron content ratio 70%) were continuously added from the furnace to produce about 60 tons of molten iron. At this time, anthracite having a particle size of 1.5 mm or less was blown in at a rate of 250 kg / min on average using nitrogen gas as a carrier gas from the six bottom blowing tuyeres. The oxygen supply flow rate from the upper blowing lance is 24000 Nm 3 / hr.
【００２９】溶解中にはスラグ組成制御用の副原料とし
て生石灰、軽焼マグネサイトを投入している。操業中の
二次燃焼率はランス高さを制御することにより２０〜３
０％の範囲（平均２５％）で制御できた。操業時間は約
２３分であった。溶解終点の〔Ｃ〕は４．２５％、温度
は１３６０℃であり、溶解操業は順調に推移した。スラ
グ組成はＣａＯ＝４１％、ＭｇＯ＝１５％、ＳｉＯ2 ＝
３３％であった。During melting, quicklime and lightly burned magnesite are added as auxiliary raw materials for controlling the slag composition. The secondary combustion rate during operation can be controlled to 20 to 3 by controlling the lance height.
Control was possible in the range of 0% (average 25%). The operation time was about 23 minutes. The melting point [C] was 4.25%, the temperature was 1360 ° C, and the melting operation was smooth. The slag composition was CaO = 41%, MgO = 15%, SiO 2 =
33%.
【００３０】主な結果を表２中の実施例１として記載し
た。比較のために、廃車屑でない屑（例えば、主に表面
処理していない鋼板からなる新断ちプレス屑の小片）を
炉上から連続添加した場合も実施し、表２に比較例とし
て併記した。本発明の方が、石炭使用量が少なく、有害
な金属元素を含む廃棄物を減容化でき、スラグの環境汚
染も無く、路盤材などで有効利用できる利点を有する。The main results are described as Example 1 in Table 2. For comparison, a case where scraps other than scrap car scraps (for example, small pieces of new breaking press scraps mainly made of a steel sheet not subjected to surface treatment) were continuously added from the furnace was also carried out, and also shown in Table 2 as a comparative example. The present invention has the advantage that the amount of coal used is small, the volume of waste containing harmful metal elements can be reduced, there is no environmental pollution of slag, and it can be effectively used for roadbed materials and the like.
【００３１】[0031]
【表２】 [Table 2]
【００３２】（実施例２）同様に、冷鉄源として部分解
体後、有機非金属物質及び無機非金属物質を含んだまま
プレスした廃車屑を使用して溶解を行ったが、本実施例
では、溶解炉で発生したダストを１０回リサイクル使用
した。具体的な、溶解手順や操業条件は実施例１の方法
に準じている。主な結果を表２中の実施例２として記載
した。実施例２では、実施例１と同様に石炭使用量が少
なく、有害な金属元素を含む廃棄物を減容化でき、スラ
グの環境汚染も無く、路盤材などで有効利用できる利点
を有する。特に、ダストを１０回リサイクル使用したた
め、ダスト中のＺｎ濃度が増加して、付加価値か向上し
た。(Embodiment 2) Similarly, after partially decomposed as a cold iron source, melting was carried out by using scrap car scrap pressed while containing an organic non-metallic substance and an inorganic non-metallic substance. The dust generated in the melting furnace was recycled 10 times. Specific melting procedures and operating conditions are in accordance with the method of Example 1. The main results are described as Example 2 in Table 2. The second embodiment has the same advantages as the first embodiment in that the amount of coal used is small, the volume of waste containing harmful metal elements can be reduced, there is no environmental pollution of slag, and it can be effectively used for roadbed materials and the like. In particular, since the dust was recycled ten times, the Zn concentration in the dust was increased, and the added value was improved.
【００３３】（実施例３）さらに同様に、冷鉄源として
部分解体後、有機非金属物質及び無機非金属物質を含ん
だままプレスした廃車屑を使用して溶解を行ったが、本
実施例では、溶解炉で発生したダストに石炭を１５％内
装し、１２５０℃の予備還元炉で１５分間還元処理した
後の、約１０００℃の熱塊ペレットを一部、溶解に使用
した。具体的な、溶解手順や操業条件は実施例１の方法
に準じている。(Example 3) Further, similarly, after partially decomposed as a cold iron source, melting was performed using scrap car scrap pressed while containing an organic non-metallic substance and an inorganic non-metallic substance. In this example, 15% of coal was incorporated in dust generated in a melting furnace, and a reduction treatment was performed for 15 minutes in a 1250 ° C. preliminary reducing furnace. Specific melting procedures and operating conditions are in accordance with the method of Example 1.
【００３４】主な結果を表２中の実施例３として記載し
た。実施例３では、実施例１、２と同様に石炭使用量が
少なく、有害な金属元素を含む廃棄物を減容化でき、ス
ラグの環境汚染も無く、路盤材などで有効利用できる利
点を有する。特に、発生ダストを予備還元し、予備還元
工程の飛灰に揮発性の有害金属を濃化せしめることがで
き、Ｚｎ等の回収メリットが増加した。The main results are described as Example 3 in Table 2. In the third embodiment, as in the first and second embodiments, the amount of coal used is small, the volume of waste containing harmful metal elements can be reduced, there is no environmental pollution of slag, and there is an advantage that it can be effectively used for roadbed materials and the like. . In particular, the generated dust can be preliminarily reduced, and the volatile harmful metal can be concentrated in the fly ash in the preliminary reduction step, and the merit of recovering Zn and the like has increased.
【００３５】（実施例４）引き続き、冷鉄源として部分
解体後、有機非金属物質及び無機非金属物質を含んだま
まプレスした廃車屑を使用して溶解を行ったが、本実施
例では、溶解炉で使用する石炭の代替として、廃車処理
時に付随して発生する廃タイヤを使用した。具体的な、
溶解手順や操業条件は実施例１の方法に準じている。(Example 4) Subsequently, after partially decomposing as a cold iron source, melting was performed using scrap car scrap pressed while containing an organic non-metallic substance and an inorganic non-metallic substance. As an alternative to the coal used in the melting furnace, waste tires generated accompanying the disposal of scrap cars were used. concrete,
The dissolution procedure and operating conditions are in accordance with the method of Example 1.
【００３６】主な結果を表２中の実施例４として記載し
た。実施例４では、実施例１、２、３と同様に石炭使用
量が少なく、有害な金属元素を含む廃棄物を減容化で
き、スラグの環境汚染も無く、路盤材などで有効利用で
きる利点を有する。特に、石炭より安価な産業廃棄物で
ある廃タイヤを有効活用できるので、安価に溶解処理で
きる。The main results are described as Example 4 in Table 2. In Example 4, as in Examples 1, 2, and 3, the amount of coal used is small, the volume of waste containing harmful metal elements can be reduced, there is no environmental pollution of slag, and there is an advantage that it can be effectively used for roadbed materials and the like. Having. In particular, since waste tires, which are industrial wastes cheaper than coal, can be effectively used, melting treatment can be performed at low cost.
【００３７】[0037]
【発明の効果】請求項１、２に係る本発明によれば、
部分解体された廃車または廃家電機器をシュレッダー処
理することなく、安価な熱源の石炭を用い、かつ安定的
に溶解処理し、その際に上記廃車または廃家電機器の有
機物質（可燃焼分）を溶解熱源の一部として活用し、廃
車の鉄分、非鉄金属（Ｃｕ、Ｎｉ、Ｃｒ、Ｓｎ等）を製
鋼原料の溶銑に、ガラス、セラミックス等の無機物質、
非鉄金属のＡｌを路盤材原料の溶滓にすると共に、Ｚ
ｎ、Ｐｂ、Ｃｄ、Ｈｇ、Ｓｂ等の有害な重金属を含む廃
棄物を大幅に減容することができる。また、請求項２に
係る本発明によれば、上記に加えて、上記のＺｎ、
Ｐｂ、Ｃｄ、Ｈｇ、Ｓｂ等の有害な重金属を含む廃棄物
を金属Ｚｎの含有率が５０％以上のものとし、有価金
属として回収することができる。さらに、請求項４に係
る本発明によれば、上記の安価熱源の石炭の一部もし
くは全部を、石炭より安価な廃タイヤに置換して、更
に安価かつ安定的に部分解体された廃車または廃家電機
器を溶解処理することができる。According to the first and second aspects of the present invention,
Partially disassembled scrap car or waste home appliances are shredded without using a cheap heat source coal, and stably melted. At that time, organic substances (combustible components) of the scrap car or waste home appliances are removed. Utilized as a part of the heat of melting, iron from scrap cars, non-ferrous metals (Cu, Ni, Cr, Sn, etc.) can be added to hot metal of steelmaking raw materials, inorganic substances such as glass and ceramics,
In addition to using nonferrous metal Al as a slag for the material of roadbed material, Z
Waste volume containing harmful heavy metals such as n, Pb, Cd, Hg, and Sb can be greatly reduced. According to the present invention according to claim 2, in addition to the above, the above Zn,
Waste containing harmful heavy metals such as Pb, Cd, Hg, and Sb can be recovered as valuable metals with a metal Zn content of 50% or more. Further, according to the present invention according to claim 4, a part or all of the coal of the low-cost heat source is replaced with a waste tire cheaper than the coal, and the waste car or the waste that has been further partially disassembled inexpensively and stably is further reduced. Home appliances can be dissolved.
【図１】請求項１に係る本発明の実施形態例を示すプロ
セスフロー図。FIG. 1 is a process flow chart showing an embodiment of the present invention according to claim 1.
【図２】請求項２に係る本発明の実施形態例を示すプロ
セスフロー図。FIG. 2 is a process flow chart showing an embodiment of the present invention according to claim 2;
【図３】請求項３に係る本発明の実施形態例を示すプロ
セスフロー図。FIG. 3 is a process flow chart showing an embodiment of the present invention according to claim 3;
【図４】廃車使用比率およびガラス除去が石炭原単位に
及ぼす影響を示す図。FIG. 4 is a diagram showing the effects of the scrap vehicle usage ratio and the removal of glass on the unit consumption of coal.
【図５】廃タイヤ使用原単位が石炭原単位に及ぼす影響
を示す図。FIG. 5 is a diagram showing an influence of a waste tire use basic unit on a coal basic unit.
１ 溶解炉 ２ 湿式集塵機 ３ フィルタープレス ４ 予備還元炉 DESCRIPTION OF SYMBOLS 1 Melting furnace 2 Wet dust collector 3 Filter press 4 Preliminary reduction furnace
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ２２Ｂ 7/02 Ｂ０９Ｂ 3/00 ３０３Ａ (72)発明者 亀井 浩一 兵庫県姫路市広畑区富士町１番地 新日本 製鐵株式会社広畑製鐵所内 (72)発明者 奈須野 孝洋 兵庫県姫路市広畑区富士町１番地 新日本 製鐵株式会社広畑製鐵所内 (72)発明者 福田 和久 兵庫県姫路市広畑区富士町１番地 新日本 製鐵株式会社広畑製鐵所内──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI C22B 7/02 B09B 3/00 303A (72) Inventor Koichi Kamei 1 Fujimachi, Hirohata-ku, Himeji-shi, Hyogo Nippon Steel Corporation Inside Hirohata Works (72) Inventor Takahiro Nasuno 1 at Fujimachi, Hirohata-ku, Himeji City, Hyogo Prefecture Nippon Steel Corporation Inside Hirohata Works, (72) Inventor Kazuhisa Fukuda 1 Fujimachi, Hirohata-ku, Himeji City, Hyogo Prefecture New Japan Inside Hirohata Works of Steel Works, Ltd.
Claims (4)
を、種湯の存在する溶解炉内に供給すると共に、石炭、
酸素を供給し、上記使用ずみ自動車又は使用ずみ家電機
器を溶解して高〔Ｃ〕溶融鉄を得ると共に、溶解炉排ガ
ス中のダストを湿式集塵し回収することを特徴とする使
用済み自動車又は使用済み家電機器の処理方法。Claims 1. A used automobile or used home appliance is supplied into a melting furnace in which seed water is present, and coal,
Supplying oxygen, dissolving the used vehicle or used home appliance to obtain high [C] molten iron, and collecting and collecting dust in the exhaust gas of the melting furnace by wet-type or How to treat used home appliances.
特徴とする請求項１に記載の方法。2. The method according to claim 1, wherein the collected dust is reused in a melting furnace.
元後、溶解炉に再使用すると共に、予備還元炉の飛灰を
回収することを特徴とする請求項１に記載の方法。3. The method according to claim 1, wherein the recovered dust is preliminarily reduced at a high temperature in a prereduction furnace, and then reused in a melting furnace, and fly ash in the prereduction furnace is recovered.
換することを特徴とする請求項１〜３のいずれか１項に
記載の方法。4. The method according to claim 1, wherein the coal fed into the melting furnace is replaced with waste tires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13791898A JPH11335747A (en) | 1998-05-20 | 1998-05-20 | Treatment of waste car and waste house electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13791898A JPH11335747A (en) | 1998-05-20 | 1998-05-20 | Treatment of waste car and waste house electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11335747A true JPH11335747A (en) | 1999-12-07 |
Family
ID=15209737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13791898A Pending JPH11335747A (en) | 1998-05-20 | 1998-05-20 | Treatment of waste car and waste house electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11335747A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002224654A (en) * | 2000-11-30 | 2002-08-13 | Nippon Steel Corp | Method for reusing metallic/nonmetallic combined waste such as scrapped motorcar and waste household electrical appliance as resource |
| JP2003231924A (en) * | 2002-02-08 | 2003-08-19 | Mitsubishi Materials Corp | Method for manufacturing molten metal from incinerated refuse, and application thereof |
| JP2007077452A (en) * | 2005-09-14 | 2007-03-29 | Nippon Steel Corp | Method for utilizing dust into steelmaking in converter and method for operating converter exclusive for dust melting |
| JP2009234835A (en) * | 2008-03-26 | 2009-10-15 | Taiheiyo Cement Corp | Method of making abandoned automobile shredder dust into fuel for firing cement |
| CN114112784A (en) * | 2021-11-30 | 2022-03-01 | 格林美(武汉)城市矿山产业集团有限公司 | Physical and chemical property testing method for broken residues of scraped cars |
-
1998
- 1998-05-20 JP JP13791898A patent/JPH11335747A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002224654A (en) * | 2000-11-30 | 2002-08-13 | Nippon Steel Corp | Method for reusing metallic/nonmetallic combined waste such as scrapped motorcar and waste household electrical appliance as resource |
| JP2003231924A (en) * | 2002-02-08 | 2003-08-19 | Mitsubishi Materials Corp | Method for manufacturing molten metal from incinerated refuse, and application thereof |
| JP2007077452A (en) * | 2005-09-14 | 2007-03-29 | Nippon Steel Corp | Method for utilizing dust into steelmaking in converter and method for operating converter exclusive for dust melting |
| JP2009234835A (en) * | 2008-03-26 | 2009-10-15 | Taiheiyo Cement Corp | Method of making abandoned automobile shredder dust into fuel for firing cement |
| CN114112784A (en) * | 2021-11-30 | 2022-03-01 | 格林美(武汉)城市矿山产业集团有限公司 | Physical and chemical property testing method for broken residues of scraped cars |
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