JPH08257531A - Melt treatment method for waste material - Google Patents
Melt treatment method for waste materialInfo
- Publication number
- JPH08257531A JPH08257531A JP7065557A JP6555795A JPH08257531A JP H08257531 A JPH08257531 A JP H08257531A JP 7065557 A JP7065557 A JP 7065557A JP 6555795 A JP6555795 A JP 6555795A JP H08257531 A JPH08257531 A JP H08257531A
- Authority
- JP
- Japan
- Prior art keywords
- waste material
- melting
- heat insulating
- insulating material
- melted
- 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.)
- Granted
Links
Landscapes
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、火力発電所等において
使用されているケイ酸カルシウム保温材、ロックウール
保温材、ガラスウール保温材等の軽比重の廃材の溶融処
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 melting a waste material having a low specific gravity such as calcium silicate heat insulating material, rock wool heat insulating material and glass wool heat insulating material used in thermal power plants.
【０００２】[0002]
【従来の技術】火力発電所、化学プラント、製油所等に
おいては、ケイ酸カルシウム保温材、ロックウール保温
材、ガラスウール保温材等の軽比重の保温材が使用され
ており、点検や補修工事の際には撤去された廃材が大量
に発生する。従来、このような廃材はビニール袋に入れ
たうえ、産業廃棄物として埋め立て処分されている。2. Description of the Related Art In thermal power plants, chemical plants, refineries, etc., heat insulating materials of light specific gravity such as calcium silicate heat insulating material, rock wool heat insulating material, glass wool heat insulating material are used for inspection and repair work. In that case, a large amount of removed waste material is generated. Conventionally, such waste materials are put in a plastic bag and then landfilled as industrial waste.
【０００３】ところが、この種の軽比重の廃材はかさ容
積が大きいため、埋め立て処分場までの運搬と処分には
多大な費用が必要とされている。また埋め立て処分には
広い場所を必要とするが、最終処分場は近年用地確保が
困難となっており、大きな社会問題となっている。However, since this type of waste material having a light specific gravity has a large bulk volume, a great deal of cost is required for transportation and disposal to a landfill disposal site. In addition, landfill disposal requires a large area, but it has become a major social problem since it has become difficult to secure land for the final disposal site in recent years.
【０００４】なお、廃材のうち吹き付けアスベスト廃材
については、これをガラスの小片とともに溶融炉に投入
し、ガラスの重みによりアスベスト廃材を溶融液中に押
し込み溶融させる方法が特開平2-251289号公報等により
提案されている。ところがこの方法では多量のガラスが
助剤として必要となり、処理コストの上昇や最終処理物
の重量増加を招くという問題がある。しかもケイ酸カル
シウム保温材、ロックウール保温材、ガラスウール保温
材等はボード状等に成形されているものが多く、吹き付
けアスベスト廃材のようにそのまま溶融炉に自動投入す
ることは困難であった。Regarding blown asbestos waste material among the waste materials, there is a method in which this is put into a melting furnace together with a small piece of glass, and the asbestos waste material is pushed into the molten liquid by the weight of the glass to melt it. Has been proposed by. However, this method requires a large amount of glass as an auxiliary agent, which causes a problem that the treatment cost increases and the weight of the final treated product increases. Moreover, many of the calcium silicate heat insulating materials, rock wool heat insulating materials, glass wool heat insulating materials and the like are formed into boards and the like, and it was difficult to automatically insert them into the melting furnace as they are like sprayed asbestos waste materials.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決し、ケイ酸カルシウム保温材、ロックウ
ール保温材、ガラスウール保温材等の軽比重の廃材を効
率的に溶融処理することができる廃材の溶融処理方法を
提供するためになされたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and efficiently melt-processes waste materials having a light specific gravity such as calcium silicate heat insulating material, rock wool heat insulating material, and glass wool heat insulating material. The purpose of the present invention is to provide a method for melting and processing a waste material that can be processed.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明の廃材の溶融処理方法は、ケイ酸カ
ルシウム保温材、ロックウール保温材、ガラスウール保
温材等の軽比重の廃材を、破砕して高密度化したうえで
溶融炉にて溶融することを特徴とするものである。な
お、破砕された廃材を５〜30mmの粒径に造粒して溶融炉
に投入することが好ましい。また、破砕された廃材に水
ガラス等の溶融助剤を添加して溶融することもできる。[Means for Solving the Problems] A method for melting and treating waste materials according to the present invention, which has been made to solve the above problems, is a waste material having a light specific gravity such as calcium silicate heat insulating material, rock wool heat insulating material and glass wool heat insulating material. Is crushed, densified, and then melted in a melting furnace. The crushed waste material is preferably granulated into a particle size of 5 to 30 mm and charged into a melting furnace. It is also possible to add a melting aid such as water glass to the crushed waste material and melt it.
【０００７】[0007]
【作用】本発明によれば、軽比重の廃材を破砕し、好ま
しくは粒状化したうえで溶融する。このためハンドリン
グが容易となり、溶融炉の溶湯表面への均一供給が行い
易くなり、溶湯表面からの熱放散を防止できるうえ、粉
塵の飛散やこぼれによる作業環境の悪化が防止される。
また本発明では軽比重の廃材を高密度化したうえで溶融
炉に投入するので、投入された廃材が溶湯表面に浮かぶ
ことなく沈降し、速やかに溶融される。According to the present invention, a waste material having a light specific gravity is crushed, preferably granulated and then melted. Therefore, handling becomes easy, uniform supply to the molten metal surface of the melting furnace is facilitated, heat dissipation from the molten metal surface can be prevented, and deterioration of the working environment due to dust scattering or spilling is prevented.
Further, in the present invention, since the waste material having a light specific gravity is densified and then charged into the melting furnace, the charged waste material settles without floating on the surface of the molten metal and is quickly melted.
【０００８】このように本発明によればケイ酸カルシウ
ム保温材、ロックウール保温材、ガラスウール保温材等
の軽比重の廃材を効率よく溶融処理することができ、従
来のように埋め立て処分場までの運搬と処分に要する費
用を必要とせず、また埋め立て処分場の不足の問題を解
決することができる。なお、水ガラス等の溶融助剤を添
加すれば、溶融促進効果を高めることができるととも
に、廃材の表面を濡らすことにより粉塵飛散抑制効果を
高めることができる利点がある。As described above, according to the present invention, waste materials having a light specific gravity such as calcium silicate heat insulating material, rock wool heat insulating material, and glass wool heat insulating material can be efficiently melt-processed, and even to the landfill disposal site as in the past. It does not require the cost of transportation and disposal, and can solve the problem of shortage of landfill sites. It should be noted that the addition of a melting aid such as water glass has an advantage that the melting promoting effect can be enhanced and the dust scattering suppressing effect can be enhanced by wetting the surface of the waste material.
【０００９】[0009]
【実施例】以下に本発明を図示の実施例とともに更に詳
細に説明する。 〔実施例１〕図１に示すように、ケイ酸カルシウム等の
軽比重の廃材はまず剪断式の破砕機１により破砕され、
更に造粒機２に送られる。実施例の造粒機２はブリケッ
ティングマシンと呼ばれるもので、テーパ状のスクリュ
ー羽根３によって廃材を圧縮しつつ下方へ送り、一対の
高圧ロール４、４の間で加圧して造粒するとともに高密
度化する装置である。造粒物の粒径は５〜30mm程度とす
ることが好ましい。The present invention will be described in more detail below with reference to the illustrated embodiments. Example 1 As shown in FIG. 1, a waste material having a light specific gravity such as calcium silicate is first crushed by a shearing type crusher 1,
Further, it is sent to the granulator 2. The granulating machine 2 of the embodiment is called a briquetting machine, and the waste material is sent downward while being compressed by the tapered screw blades 3, and is pressed between the pair of high-pressure rolls 4 and 4 for granulation. This is a device for high density. The particle size of the granulated product is preferably about 5 to 30 mm.
【００１０】破砕機１により破砕しただけの軽比重の廃
材は、密度が0.08〜0.1トン/m3 であるが、造粒機２に
より高密度化することによって、密度を0.6 〜1.0 トン
/m3 と約10倍程度まで高めることができる。密度を更に
高めたい場合には、水分を５〜10％程度添加するとよ
い。The waste material having a light specific gravity just crushed by the crusher 1 has a density of 0.08 to 0.1 ton / m 3 , but by densifying it by the granulator 2, the density becomes 0.6 to 1.0 ton.
/ m 3 and can be increased up to about 10 times. When it is desired to further increase the density, it is advisable to add about 5 to 10% of water.
【００１１】次に造粒され高密度化された廃材は、分配
器５を介して溶融炉６へ投入される。実施例の溶融炉６
は、電極７、７を液面下に挿入したサブマージアーク炉
と呼ばれる形式の電気溶融炉であり、電極７、７間に通
電してそのジュール熱により廃材を1400〜1700℃の高温
で溶融する。このとき、造粒された廃材を溶湯面上に均
一に分散させて熱の放散を防ぐことが好ましく、前記し
たように粒径を５〜30mmとしておけばそのハンドリング
が容易となるとともに、粉塵の飛散が抑制される。な
お、溶融炉の種類は実施例のサブマージアーク炉に限定
されるものではなく、例えばキュポラ等の他の種類の炉
を使用することもできる。またケイ酸カルシウム保温材
を溶融する際に、ロックウール保温材を20％程度まで添
加して溶融することも可能である。Next, the waste material that has been granulated and densified is charged into the melting furnace 6 through the distributor 5. Example melting furnace 6
Is an electric melting furnace of a type called a submerged arc furnace in which electrodes 7 and 7 are inserted below the liquid surface, and the waste material is melted at a high temperature of 1400 to 1700 ° C. by the Joule heat caused by energizing between the electrodes 7 and 7. . At this time, it is preferable to evenly disperse the granulated waste material on the surface of the molten metal to prevent heat dissipation. If the particle size is set to 5 to 30 mm as described above, the handling becomes easy and dust Scattering is suppressed. The type of melting furnace is not limited to the submerged arc furnace of the embodiment, and other kinds of furnaces such as cupola can be used. When melting the calcium silicate heat insulating material, it is possible to add up to about 20% of rock wool heat insulating material and melt it.
【００１２】溶融された廃材は、図２に示すように溶融
炉６の出湯口８から細流として炉外に導かれる。本実施
例では、溶融物は繊維化装置９により繊維化される。実
施例の繊維化装置９は7000〜8500rpm の高速で回転する
円盤状又は円筒状の回転体10、10上に溶融物を流下さ
せ、遠心力で繊維化する遠心法を利用した装置である。
このほか、繊維化装置９としては特殊な形状のノズルか
ら噴出させた圧縮空気により溶融物を吹き飛ばし、繊維
化するブローイング法を利用した装置を用いることもで
きる。なお、これらの繊維化装置９自体は、従来からロ
ックウールやセラミックウールの製造に使用されている
ものをそのまま使用することができる。The melted waste material is guided to the outside of the furnace as a trickle stream from the tap hole 8 of the melting furnace 6 as shown in FIG. In this embodiment, the melt is fiberized by the fiberizing device 9. The fiberizing apparatus 9 of the embodiment is an apparatus utilizing the centrifugal method in which the melt is flown down onto the disk-shaped or cylindrical rotating bodies 10 and 10 which rotate at a high speed of 7000 to 8500 rpm, and the fibers are formed into fibers by centrifugal force.
In addition, as the fiberizing device 9, it is also possible to use a device that uses a blowing method in which the melt is blown away by compressed air ejected from a nozzle having a special shape to form a fiber. As the fiberizing device 9 itself, those conventionally used for producing rock wool or ceramic wool can be used as they are.
【００１３】11は繊維化装置９の出口側に配置された集
綿装置であり、製造されたケイ酸カルシウム繊維のみを
排風器12でコンベヤ13上に吸引して回収する。回収され
た繊維は公知のボード化装置などの成形装置 (図示せ
ず) により成形されて焼き固められ、再び保温材とした
り、吸音材として再利用される。Reference numeral 11 denotes a cotton collecting device arranged on the outlet side of the fiberizing device 9, and only the produced calcium silicate fiber is sucked onto the conveyor 13 by the air blower 12 and collected. The recovered fibers are molded and baked by a molding device (not shown) such as a known boarding device and reused as a heat insulating material or a sound absorbing material.
【００１４】このほか、溶融炉６の出湯口８から流出さ
せた溶融物を水中に投入して水砕スラグとしたり、型に
鋳込んでブロック等を成形したり、ファイバーを製造す
ることもできる。これらの方法によれば容積を非常に小
さくすることができ、埋め立て処分することとなっても
コストを低減させることができる。In addition to the above, it is also possible to put the melt flowing out from the tap 8 of the melting furnace 6 into water to form granulated slag, cast it into a mold to mold a block or the like, or manufacture fibers. . According to these methods, the volume can be made very small, and the cost can be reduced even if landfilling is performed.
【００１５】〔実施例２〕上記の実施例１では、破砕し
て高密度化した廃材を単独で溶融炉６に投入したが、本
実施例では廃材に水ガラス（ケイ酸ソーダ）等の溶融助
剤を５〜10重量％添加して溶融する。このように溶融助
剤を添加することにより、溶融速度を高めることができ
るとともに、廃材の表面を濡らすことにより粉塵飛散を
抑制し、作業環境を向上させることができる。[Embodiment 2] In the above-mentioned Embodiment 1, the crushed and densified waste material is separately charged into the melting furnace 6, but in this embodiment, the waste material is melted with water glass (sodium silicate) or the like. Add 5 to 10% by weight of auxiliary agent and melt. By adding the melting aid in this way, the melting rate can be increased, and by dusting the surface of the waste material, dust scattering can be suppressed and the working environment can be improved.
【００１６】例えば、保温廃材を破砕しただけの場合の
溶融速度は40kWの電気溶融炉を使用した場合は25〜30kg
/hであったが、保温廃材を破砕した後、10重量％の水ガ
ラスを添加し、高密度化すれば47〜55kg/hまで溶融速度
を高めることができる。For example, the melting rate in the case of simply crushing the heat insulating waste material is 25 to 30 kg in the case of using an electric melting furnace of 40 kW.
Although it was / h, if the heat insulation waste material is crushed and 10% by weight of water glass is added to increase the density, the melting rate can be increased to 47 to 55 kg / h.
【００１７】[0017]
【発明の効果】以上の説明から明らかなように、本発明
の廃材の溶融処理方法によれば、廃材をそのまま埋め立
て処分していた従来法とは異なり、埋め立て処分コスト
を大幅に削減することができる。また本発明によれば廃
材を破砕して高密度化したうえで溶融炉に投入するの
で、溶湯中への沈降が早く、迅速に溶融させることが可
能となる。As is clear from the above description, according to the waste material melting treatment method of the present invention, unlike the conventional method in which the waste material is directly landfilled, the landfill disposal cost can be significantly reduced. it can. Further, according to the present invention, since the waste material is crushed and densified and then charged into the melting furnace, the sedimentation into the molten metal is quick and it is possible to rapidly melt.
【図１】本発明の実施例を示す前半の工程図である。FIG. 1 is a process diagram of a first half showing an embodiment of the present invention.
【図２】本発明の実施例を示す後半の工程図である。FIG. 2 is a process chart of the latter half showing an embodiment of the present invention.
１ 破砕機、２ 造粒機、３ テーパ状のスクリュー羽
根、４ 高圧ロール、５ 分配器、６ 溶融炉、７ 電
極、８ 出湯口、９ 繊維化装置、10 回転体、11 集
綿装置、12 排風器、13 コンベヤ1 Crusher, 2 Granulator, 3 Tapered screw blade, 4 High pressure roll, 5 Distributor, 6 Melting furnace, 7 Electrode, 8 Tap, 9 Fiberizing device, 10 Rotating body, 11 Cotton collecting device, 12 Exhaust fan, 13 conveyor
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ２３Ｊ 1/00 Ｂ０９Ｂ 3/00 ＺＡＢ (72)発明者 渡邊 恭史 東京都調布市西つつじヶ丘２丁目４番１号 東京電力株式会社技術研究所内 (72)発明者 柳瀬 哲也 愛知県名古屋市瑞穂区須田町２番56号 日 本碍子株式会社内 (72)発明者 冨山 裕 愛知県名古屋市瑞穂区須田町２番56号 日 本碍子株式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Reference number within the agency FI Technical indication location F23J 1/00 B09B 3/00 ZAB (72) Inventor Yasushi Watanabe Nishitsujigaoka, Chofu-shi, Tokyo 2 4-1-1 TEPCO Ltd. Technical Research Institute (72) Inventor Tetsuya Yanase 2-56 Sudamachi, Mizuho-ku, Nagoya-shi, Aichi Nikko Inshiko Co., Ltd. (72) Inventor Yu Tomiyama Mizuho-ku, Nagoya-shi, Aichi 2-56 Sudacho Nihon Insulator Co., Ltd.
Claims (3)
保温材、ガラスウール保温材等の軽比重の廃材を、破砕
して高密度化したうえで溶融炉にて溶融することを特徴
とする廃材の溶融処理方法。1. A waste material having a light specific gravity, such as a calcium silicate heat insulating material, a rock wool heat insulating material, and a glass wool heat insulating material, which is crushed to a high density and then melted in a melting furnace. Melt processing method.
して溶融する請求項１に記載の廃材の溶融処理方法。2. The melting treatment method of a waste material according to claim 1, wherein the crushed waste material is granulated into a particle size of 5 to 30 mm and melted.
融する請求項１または２に記載の廃材の溶融処理方法。3. The method for melting and treating a waste material according to claim 1, wherein the crushed waste material is melted by adding a melting aid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06555795A JP3656086B2 (en) | 1995-03-24 | 1995-03-24 | Method for melting waste materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06555795A JP3656086B2 (en) | 1995-03-24 | 1995-03-24 | Method for melting waste materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08257531A true JPH08257531A (en) | 1996-10-08 |
| JP3656086B2 JP3656086B2 (en) | 2005-06-02 |
Family
ID=13290430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06555795A Expired - Fee Related JP3656086B2 (en) | 1995-03-24 | 1995-03-24 | Method for melting waste materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3656086B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009189922A (en) * | 2008-02-13 | 2009-08-27 | Ask Sanshin Engineering Co Ltd | Compacting machine and cement recycling method of industrial waste using compacting machine |
-
1995
- 1995-03-24 JP JP06555795A patent/JP3656086B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009189922A (en) * | 2008-02-13 | 2009-08-27 | Ask Sanshin Engineering Co Ltd | Compacting machine and cement recycling method of industrial waste using compacting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3656086B2 (en) | 2005-06-02 |
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