JPH0330885A - Melt-treatment of asbestos - Google Patents
Melt-treatment of asbestosInfo
- Publication number
- JPH0330885A JPH0330885A JP1164338A JP16433889A JPH0330885A JP H0330885 A JPH0330885 A JP H0330885A JP 1164338 A JP1164338 A JP 1164338A JP 16433889 A JP16433889 A JP 16433889A JP H0330885 A JPH0330885 A JP H0330885A
- Authority
- JP
- Japan
- Prior art keywords
- asbestos
- treatment
- melt
- sludge
- mixture
- 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
- 239000010425 asbestos Substances 0.000 title claims abstract description 25
- 229910052895 riebeckite Inorganic materials 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000010802 sludge Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000010309 melting process Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 abstract description 14
- 230000008018 melting Effects 0.000 abstract description 14
- 238000000465 moulding Methods 0.000 abstract description 7
- 239000011230 binding agent Substances 0.000 abstract description 6
- 239000000571 coke Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000000155 melt Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 229910052620 chrysotile Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- CWBIFDGMOSWLRQ-UHFFFAOYSA-N trimagnesium;hydroxy(trioxido)silane;hydrate Chemical compound O.[Mg+2].[Mg+2].[Mg+2].O[Si]([O-])([O-])[O-].O[Si]([O-])([O-])[O-] CWBIFDGMOSWLRQ-UHFFFAOYSA-N 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、近年発ガン性物質として問題になっているア
スベストの溶融処理法に関する。尚、アスベストとは、
クリソタイルＤＪｇ３ＳｉａＯｓ（ＯＨ）、］、クロシ
トライト［Ｎａ２Ｆｅ３Ｓｉａ０２２（ＯＨ）２］ 、
アモサイト［（ＦｅＭｇ）ａｓｉｓｏｚｚ（ＯＨ）ｔｌ
等の綿状物の総称である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for melting asbestos, which has recently become a problem as a carcinogenic substance. Furthermore, what is asbestos?
chrysotile DJg3SiaOs(OH), ], crocitolite [Na2Fe3Sia022(OH)2],
Amosite [(FeMg)asisozz(OH)tl
It is a general term for cotton-like substances such as
従来、アスベストの処理は埋立処分が主であり、近年一
部で電気炉により溶融処理が行われ始めた。Traditionally, asbestos has been mainly disposed of in landfills, but in recent years some areas have begun to melt it using electric furnaces.
しかし、埋立処分は二次公害発生のおそれがあり、電気
炉による溶融処理は高価な電気を大量に必要とするため
、溶融処理経費が膨大になり、処理経費をできる限り安
価にする必要がある廃棄物処理としては、大きな欠点が
あった。However, landfill disposal poses the risk of secondary pollution, and melting using an electric furnace requires large amounts of expensive electricity, resulting in huge melting costs, so it is necessary to reduce processing costs as much as possible. There were major drawbacks in terms of waste treatment.
本発明の目的は、アスベストの溶融処理経費を大巾に節
減できるようにし、かつ、そのための手段を、二次公害
防止に有効なものに工夫する点にある。An object of the present invention is to make it possible to significantly reduce the cost of melting asbestos, and to devise a means for this purpose that is effective in preventing secondary pollution.
本発明の特徴手段は、
アスベストに水処理汚泥の脱水ケーキを混合し、
その混合物を成形処理し、
その成形混合物を炭素系可燃物質で形成した高温炉床に
供給して加熱溶融することにあり、その作用・効果は次
の通りである。The characteristic means of the present invention is that asbestos is mixed with a dehydrated cake of water treatment sludge, the mixture is molded, and the molded mixture is supplied to a high-temperature hearth made of carbon-based combustible material and heated and melted. , its actions and effects are as follows.
水処理汚泥の脱水ケーキは、水分が７５〜８０％程度で
、練ると水に似た性状になると共に水よりも粘着性があ
って、バインダーとして好適なものになることを有効利
用し、アスベストを水処理汚泥の脱水ケーキで成形し、
その成形混合物をコークスなどの炭素系可燃物質の高温
炉床で、燃焼排ガスによる飛散を十分に抑制した状態で
溶融する。The dehydrated cake of water treatment sludge has a moisture content of about 75 to 80%, and when kneaded, it has properties similar to water and is more sticky than water, making it suitable as a binder. is formed from a dehydrated cake of water treatment sludge,
The molded mixture is melted in a high-temperature hearth of carbon-based combustible materials such as coke, while scattering by combustion exhaust gas is sufficiently suppressed.
つまり、電気炉に比して運転経費がはるかに安価な高温
炉床型式の溶融炉によって、アスベストを無害な溶融物
に変えることができ、アスベストの処理経費を大巾に節
減できる。In other words, a high-temperature hearth-type melting furnace, which is much cheaper to operate than an electric furnace, can convert asbestos into a harmless molten material, making it possible to significantly reduce asbestos processing costs.
また、本来廃棄物である水処理汚泥を利用して、アスベ
ストを成形状態で溶融するから、溶融処理に伴ってアス
ベストが燃焼排ガスと共に外部放出される不都合な事態
を回避できて、二次公害を十分に防止でき、しかも、成
形用バインダーに起因する処理経費高騰を十分に抑えら
れる。In addition, since asbestos is melted in a molded state using water treatment sludge, which is originally a waste, it is possible to avoid the inconvenient situation where asbestos is released outside together with combustion exhaust gas during the melting process, thereby reducing secondary pollution. This can be sufficiently prevented, and furthermore, the rise in processing costs caused by the molding binder can be sufficiently suppressed.
さらに説明すると、例えば水ガラスなどの特殊なバイン
ダーで成形すると、バインダーに要する経費が高くなる
が、水処理汚泥であれば材料経費が不要であり、又、水
で成形すると、アスベストの２０〜３０重量％程度の水
を添加しなければならないために、溶融処理において蒸
発潜熱ロスが多くなると共に溶融速度が低下して、溶融
処理経費が高くなるが、水処理汚泥であれば粘着性があ
るためにアスベストと汚泥の混合物の水分を１０重量％
程度にするだけでよく、溶融処理経費を安価にできる。To explain further, for example, if molded with a special binder such as water glass, the cost required for the binder will be high, but if it is water treatment sludge, the material cost is unnecessary. Since it is necessary to add about % by weight of water, the loss of latent heat of vaporization increases during melting treatment, the melting rate decreases, and the cost of melting increases, but water treatment sludge is sticky. The water content of the asbestos and sludge mixture is reduced to 10% by weight.
It is sufficient to reduce the melting process cost to a certain extent.
その結果、アスベストの溶融処理による無害化を、処理
経費を十分に節減して実行できると共に、二次公害を十
分に防止できる、安全性のみならず経済性においても優
れたアスベストの溶融処理法を確立できた。As a result, we have developed an asbestos melting method that is not only safe but also economically efficient, making it possible to render asbestos harmless by sufficiently reducing processing costs and sufficiently preventing secondary pollution. I was able to establish it.
次に、図面により実施例を示す。 Next, examples will be shown with reference to drawings.
下水、上水、産業排水などの浄化処理に伴って発生する
水処理汚泥を、脱水機（１）による処理で含水率７５〜
８０％程度の脱水ケーキにする。Water treatment sludge generated during purification of sewage, water, industrial wastewater, etc. is treated with a dehydrator (1) to reduce the water content to 75~
Make a cake that is about 80% dehydrated.
アスベストと水処理汚泥の脱水ケーキを、アスベストと
汚泥の混合物の水分が１０重量％程度になるように配合
して、混合機（２）で十分に攪拌混合する。A dehydrated cake of asbestos and water treatment sludge is blended so that the water content of the mixture of asbestos and sludge is about 10% by weight, and thoroughly stirred and mixed in a mixer (2).
混合機（２）からの混合物を成型機（３）で成形処理し
、その成形混合物を溶融炉（４）においてコークスなど
の炭素系可燃物質により形成した高温炉床で加熱溶融処
理する。The mixture from the mixer (2) is molded in a molding machine (3), and the molded mixture is heated and melted in a high-temperature hearth made of carbon-based combustible material such as coke in a melting furnace (4).
この時、水処理汚泥がバインダーとして有効に作用して
、十分に強い成形品が得られ、溶融炉（４）におけるア
スベストの飛散を十分に抑制できる。At this time, the water treatment sludge effectively acts as a binder, and a sufficiently strong molded product is obtained, and scattering of asbestos in the melting furnace (4) can be sufficiently suppressed.
次に別実施例を説明する。 Next, another embodiment will be described.
アスベストに対する水処理汚泥の脱水ケーキの配合比は
、脱水ケーキの含水率や粘着性などに見合って適当に選
定できる。The blending ratio of the dehydrated cake of water treatment sludge to asbestos can be appropriately selected depending on the moisture content and stickiness of the dehydrated cake.
使用する脱水機（１）や混合機（２）は公知のものから
適当に選定できる。The dehydrator (1) and mixer (2) to be used can be appropriately selected from known ones.
成形混合物の形状や寸法などは適当に変更でき、また、
使用する成型機（３）は例えばスクリュー式押出し成型
機など公知のものから適当に選定できる。The shape and dimensions of the molding mixture can be changed as appropriate, and
The molding machine (3) used can be appropriately selected from known ones, such as a screw extrusion molding machine.
溶融炉（４）からのスラグをいかに処置するかは不問で
ある。It does not matter how the slag from the melting furnace (4) is treated.
図面は本発明の実施例を示すフローシートである。 The drawing is a flow sheet showing an embodiment of the invention.
Claims (1)
供給して加熱溶融するアスベストの溶融処理法。[Claims] An asbestos melting process in which asbestos is mixed with a dehydrated cake of water treatment sludge, the mixture is molded, and the molded mixture is supplied to a high-temperature hearth made of carbon-based combustible material and heated and melted. Law.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01164338A JP3085958B2 (en) | 1989-06-27 | 1989-06-27 | Asbestos melting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01164338A JP3085958B2 (en) | 1989-06-27 | 1989-06-27 | Asbestos melting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0330885A true JPH0330885A (en) | 1991-02-08 |
| JP3085958B2 JP3085958B2 (en) | 2000-09-11 |
Family
ID=15791276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01164338A Expired - Fee Related JP3085958B2 (en) | 1989-06-27 | 1989-06-27 | Asbestos melting process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3085958B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105020A (en) * | 2006-09-28 | 2008-05-08 | Mitsubishi Materials Corp | Treatment method of asbestos-containing material and fluoride sludge and cement manufacturing method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101542718B1 (en) * | 2015-03-09 | 2015-08-12 | 홍정선 | folding type water tank for transportation living fish |
| KR101553195B1 (en) * | 2015-03-09 | 2015-09-30 | 홍정선 | water tank for transportation living fish |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5152678A (en) * | 1974-10-15 | 1976-05-10 | Ebara Infilco | Haikibutsuno shorihoho |
| JPS62212260A (en) * | 1986-03-14 | 1987-09-18 | 明星工業株式会社 | Method of converting waste matter to ceramics |
| JPS62237984A (en) * | 1986-04-08 | 1987-10-17 | Meisei Kogyo Kk | Waste materials treatment for asbestos-containing substance |
-
1989
- 1989-06-27 JP JP01164338A patent/JP3085958B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5152678A (en) * | 1974-10-15 | 1976-05-10 | Ebara Infilco | Haikibutsuno shorihoho |
| JPS62212260A (en) * | 1986-03-14 | 1987-09-18 | 明星工業株式会社 | Method of converting waste matter to ceramics |
| JPS62237984A (en) * | 1986-04-08 | 1987-10-17 | Meisei Kogyo Kk | Waste materials treatment for asbestos-containing substance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105020A (en) * | 2006-09-28 | 2008-05-08 | Mitsubishi Materials Corp | Treatment method of asbestos-containing material and fluoride sludge and cement manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3085958B2 (en) | 2000-09-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |