JP2776896B2 - Fired body of sewage sludge incineration ash - Google Patents
Fired body of sewage sludge incineration ashInfo
- Publication number
- JP2776896B2 JP2776896B2 JP1165737A JP16573789A JP2776896B2 JP 2776896 B2 JP2776896 B2 JP 2776896B2 JP 1165737 A JP1165737 A JP 1165737A JP 16573789 A JP16573789 A JP 16573789A JP 2776896 B2 JP2776896 B2 JP 2776896B2
- Authority
- JP
- Japan
- Prior art keywords
- sewage sludge
- ash
- incineration ash
- fired body
- fired
- 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
- 239000010801 sewage sludge Substances 0.000 title claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 8
- 238000010304 firing Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 239000008187 granular material Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、下水汚泥焼却灰の焼成体に関するものであ
る。Description: TECHNICAL FIELD The present invention relates to a fired body of sewage sludge incineration ash.
（従来の技術と解決すべき課題） 従来、下水汚泥焼却灰の処理方法として、たとえば、
前記焼却灰に、セメントあるいは石灰等を添加して造粒
したのち、固化処理をする造粒固化方法や前記焼却灰に
融材を添加したのち溶融する溶融処理方法がある。(Conventional technology and problems to be solved) Conventionally, as a method of treating sewage sludge incineration ash, for example,
There are a granulation and solidification method in which cement or lime or the like is added to the incinerated ash and then granulation is performed, and a melting method in which a flux is added to the incinerated ash and then melted.
しかしながら、両者とも有価物の添加材を必要とする
ため処理費が高価になるとともに、設備が複雑で高価で
あるという問題点を有する。そして、焼却灰の処理物で
ある造粒物あるいは溶融スラグは、廃棄処分され、何ら
有効利用されないものである。However, both of them require a valuable additive, so that the processing cost is high and the equipment is complicated and expensive. Granulated material or molten slag, which is a processed material of incinerated ash, is discarded and is not effectively used at all.
そこで、本出願人は、焼却灰の減容化と焼却灰の製品
化を目的として特願昭63−110776号にて、下水汚泥焼却
灰を所定形状に加圧成形したのち焼成し、カサ比重が1.
4〜3.5からなる焼成品を提案した。In view of this, the applicant of the present application disclosed in Japanese Patent Application No. 63-110776, for the purpose of reducing the volume of incinerated ash and commercializing incinerated ash, press forming sewage sludge incinerated ash into a predetermined shape, firing it, and firing it. Is 1.
A fired product consisting of 4-3.5 was proposed.
ところで、この焼成品は、表面が平滑で、色調が焼却
灰の成分にもとづき規制されたもので、たとえば、イン
ターロッキングレンガとして使用する場合、市販のイン
ターロッキングレンガと比較して、すべり抵抗は高いも
のであるが、依然として雨天時滑り易いという問題があ
った。By the way, this baked product has a smooth surface and the color tone is regulated based on the components of the incineration ash.For example, when used as an interlocking brick, the slip resistance is higher than that of a commercially available interlocking brick. However, there was still a problem that it was slippery in rainy weather.
したがって、本発明者らは、表面が粗面で、かつ、色
調が焼却灰の組成による色調と異なり、しかも焼却灰の
造粒物あるいは溶融スラグを有効利用する焼成体を得る
べく、鋭意検討の結果、下水汚泥焼却灰に、焼却灰から
なる造粒品、その粉砕物あるいは焼却灰に焼却灰の溶融
スラグの粉砕物を混合してあるいは積層してプレス成形
したのち焼成すれば、焼成体の表面は、適度な粗面とな
るばかりか、色調の異なる焼成体とすることができるこ
とを見出した。Therefore, the present inventors have conducted intensive studies in order to obtain a sintered body having a rough surface and a color tone different from the color tone due to the composition of the incinerated ash, and further utilizing granulated incinerated ash or molten slag. As a result, if sewage sludge incineration ash is mixed with a granulated product of incineration ash, pulverized material thereof or pulverized material of molten slag of incineration ash with incineration ash, or press-formed after sintering, calcination is performed, It has been found that the surface can be not only a moderately rough surface but also a fired body having a different color tone.
（課題を解決するための手段） 本発明にかかる下水汚泥焼却灰の焼成体は、下水汚泥
焼却灰に、焼却灰の造粒品またはその粉砕物の少なくと
もいずれか一方を積層して、あるいは所定量混合してプ
ラス成形したのち焼成したことを特徴とする下水汚泥焼
却灰の焼成体、あるいは、下水汚泥焼却灰に、焼却灰の
溶融スラグの粉砕物を積層してあるいは15％以下の比率
で混合してプレス成形したのち焼成したことを特徴とす
る下水汚泥焼却灰の焼成体である。(Means for Solving the Problems) A fired body of sewage sludge incineration ash according to the present invention is obtained by laminating at least one of a granulated incineration ash and a crushed product thereof on sewage sludge incineration ash, or A sewage sludge incineration ash fired body characterized by being mixed, plus molded, and then fired, or a sewage sludge incineration ash laminated with a crushed material of incinerated ash molten slag or at a ratio of 15% or less A sewage sludge incinerated ash, characterized by being mixed, press-molded and then fired.
（実施例） つぎに、本発明にかかる下水汚泥焼却灰の焼成体につ
いて説明する。(Example) Next, a fired body of sewage sludge incineration ash according to the present invention will be described.
まず、下水汚泥焼却灰に、1.5〜2.5mmφの造粒物を、
また、この造粒物を0.5〜1mmφに粗粉砕した粉砕物を、
第１表に示すように、218×109×190のＩ型金属に積層
あるいは混合状態で充填して、面圧1.0t/cm2でプレス成
形した成形体を連続焼成炉で1050℃で焼成したのち、冷
却して焼成体を得た。First, 1.5-2.5mmφ granulated material in sewage sludge incineration ash,
In addition, the pulverized material obtained by coarsely pulverizing the granulated material to 0.5 to 1 mmφ,
As shown in Table 1, the compact was pressed into a 218 × 109 × 190 type I metal in a laminated or mixed state and pressed at a surface pressure of 1.0 t / cm 2 and fired at 1050 ° C. in a continuous firing furnace. After that, it was cooled to obtain a fired body.
この焼成体の焼成状態は第１表に焼成体、焼成体寸法
は第２表に示す通りであった。なお、第１表中、「有
姿」とは、造粒品そのままの状態を示す。また、「焼成
状態」が司であるとは、目視により、焼成品に、割れ、
変形がなく、インターロッキングレンガとして十分使用
できる状態をいう。The fired state of this fired body was as shown in Table 1 and the fired body dimensions were as shown in Table 2. In addition, in Table 1, "presence" shows the state of the granulated product as it is. In addition, the “fired state” refers to a sinter, which means that the fired product cracks,
No deformation, meaning that it can be used as an interlocking brick.
つぎに、焼却灰に、焼却灰を溶融炉で1400℃に加熱し
て溶融させ、これを水冷あるいは空冷により細かく（1.
5〜2.5mmφ）破砕したもの、あるいは、この破砕物を破
砕機で0.5〜1.0mmφの粗粉砕としたもの、さらに、細か
く0.5mmφ以下とした微粉砕物を第３表に示すように、
焼却灰に積層あるいは混合して、前記第１実施例と同様
焼成したところ、この焼成体の焼成状態は第３表に、焼
成体寸法は第４表に示す通りであった。この場合におい
ても「有姿」とは、溶融スラグを冷却させて得た破砕物
そのものをいう。 Next, the incinerated ash is heated to 1400 ° C. in a melting furnace and melted, and the incinerated ash is finely divided by water cooling or air cooling (1.
As shown in Table 3, the crushed material, or the crushed material was coarsely crushed to 0.5 to 1.0 mmφ with a crusher, and further finely crushed to 0.5 mmφ or less as shown in Table 3.
When laminated or mixed with the incinerated ash and calcined in the same manner as in the first embodiment, the calcined state of the calcined body was as shown in Table 3 and the dimensions of the calcined body were as shown in Table 4. Also in this case, the “state” means the crushed material itself obtained by cooling the molten slag.
本実施例で、焼成体に「ふくらみ」が発生するのは、
溶融スラグを水に浸漬させると、凝固時に、内部に微細
な気孔が生じる。したがって、この破砕物が焼却灰への
混合量が規定以上になると、焼成中に、気孔中の空気が
膨張することにより全体がふくらむものであると考えら
れる。したがって、破砕物を焼却灰に混合する場合、15
％以下としなければならない。In this example, the occurrence of “bulge” in the fired body is caused by
When the molten slag is immersed in water, fine pores are generated inside during solidification. Therefore, if the amount of the crushed material mixed with the incinerated ash exceeds the specified value, it is considered that the whole expands due to expansion of the air in the pores during firing. Therefore, when mixing crushed material with incinerated ash,
% Or less.
いずれにしても、得られた焼成体の表面は、粒状物や
破砕物が存在し、粗面となるばかりか、その表面の色調
は焼却灰のみの焼成体と異なるものとなる。 In any case, the surface of the obtained fired body has not only a rough surface but also a granular material and a crushed material, and the surface has a different color tone from the fired body of only incinerated ash.
（発明の効果） 以上の説明で明らかなように、本発明によれば、汚泥
焼却灰の造粒品や溶融スラグは、粘土、バインダー等の
有価物と混合することなく、焼却灰そのものに混合して
プレス成形したのち焼成するものであること、また、汚
泥発生場所で焼成できるので、材料の搬送費用がかから
ず、コストが安価である。(Effect of the Invention) As is clear from the above description, according to the present invention, the granulated product of sludge incineration ash and the molten slag are mixed with the incineration ash itself without mixing with valuable materials such as clay and binder. Since it is fired after press forming, and can be fired at the sludge generation site, the cost of transporting the material is not required and the cost is low.
しかも、現在、下水処理場に焼却灰の造粒装備を備え
たところでは、単に、プレス成形装置と焼成炉からなる
焼成設備を増設するだけでよく、設備費も安価である。In addition, where a sewage treatment plant is currently equipped with incineration ash granulation equipment, it is only necessary to simply add a baking facility comprising a press forming apparatus and a baking furnace, and the facility cost is low.
また、本発明にかかる焼成品によれば、少なくとも上
面が粗面となって滑りにくく、かつ、焼却灰のみの焼成
体に比べて、造粒品等の存在により色調の異なった付加
価値の高い焼成体とすることができる。In addition, according to the fired product according to the present invention, at least the upper surface is roughened to prevent slippage, and compared to a fired body made of only incinerated ash, a high added value having a different color tone due to the presence of a granulated product or the like. It can be a fired body.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 赤松 健 大阪府大阪市西区京町堀２丁目４番７号 中外炉工業株式会社内 (72)発明者 千賀 忠 東京都町田市金森1793 (56)参考文献 特開 昭59−195571（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C04B 35/00──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ken Akamatsu 2-4-7 Kyomachibori, Nishi-ku, Osaka-shi, Osaka Inside Chugai Furnace Industry Co., Ltd. (72) Inventor Tadashi Chiga 1793 Kanamori, Machida-shi, Tokyo (56) Reference Reference JP-A-59-195571 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) C04B 35/00
Claims (2)
はその粉砕物の少なくともいずれか一方を積層して、あ
るいは所定量混合してプレス成形し、そののち焼成した
ことを特徴とする下水汚泥焼却灰の焼成体。A sewage sludge incinerated ash is laminated with at least one of a granulated product of the incinerated ash and a crushed product thereof, or a predetermined amount is mixed, press-formed, and then fired. Of sewage sludge incineration ash.
の粉砕物を積層してあるいは15％以下の比率で混合して
プレス成形し、そののち焼成したことを特徴とする下水
汚泥焼却灰の焼成体。2. The sewage sludge incineration characterized by laminating a crushed material of the molten slag of the incineration ash on the incineration ash of the sewage sludge or mixing at a ratio of 15% or less, press-forming, and then firing. Fired body of ash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1165737A JP2776896B2 (en) | 1989-06-28 | 1989-06-28 | Fired body of sewage sludge incineration ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1165737A JP2776896B2 (en) | 1989-06-28 | 1989-06-28 | Fired body of sewage sludge incineration ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0333049A JPH0333049A (en) | 1991-02-13 |
| JP2776896B2 true JP2776896B2 (en) | 1998-07-16 |
Family
ID=15818122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1165737A Expired - Fee Related JP2776896B2 (en) | 1989-06-28 | 1989-06-28 | Fired body of sewage sludge incineration ash |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2776896B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59195571A (en) * | 1983-04-15 | 1984-11-06 | 日本碍子株式会社 | Manufacture of lightweight aggregate from sludge |
-
1989
- 1989-06-28 JP JP1165737A patent/JP2776896B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0333049A (en) | 1991-02-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |