JPH0769705A - Production of building material - Google Patents
Production of building materialInfo
- Publication number
- JPH0769705A JPH0769705A JP21969193A JP21969193A JPH0769705A JP H0769705 A JPH0769705 A JP H0769705A JP 21969193 A JP21969193 A JP 21969193A JP 21969193 A JP21969193 A JP 21969193A JP H0769705 A JPH0769705 A JP H0769705A
- Authority
- JP
- Japan
- Prior art keywords
- straw
- sewage sludge
- building material
- inorganic mineral
- mineral fibers
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は建材の製造方法に係り、
特に、下水汚泥焼却灰を原料として建材を製造する方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building material manufacturing method,
In particular, it relates to a method for producing a building material using sewage sludge incineration ash as a raw material.
【０００２】[0002]
【従来の技術】近年、下水処理場から発生する下水汚泥
は増加傾向にあり、今後の下水道普及率の向上や下水処
理技術の高度化を考慮すると、下水汚泥発生量は増々増
加するものと予測される。2. Description of the Related Art In recent years, the amount of sewage sludge generated from sewage treatment plants has been increasing, and it is predicted that the amount of sewage sludge will increase more and more considering the improvement of the sewerage diffusion rate and the advancement of sewage treatment technology. To be done.
【０００３】従来、下水汚泥の処分方法としては、埋立
が最も多いが、今後の下水汚泥発生量の増加の面から、
有効利用を図ることが強く望まれており、その利用方法
の開発が様々な分野で進められている。Conventionally, landfilling has been the most popular disposal method of sewage sludge, but from the viewpoint of increasing the amount of sewage sludge generated in the future,
There is a strong demand for effective utilization, and the development of the utilization method is being advanced in various fields.
【０００４】この下水汚泥の有効利用の実用化の面で
は、建設資材としての利用が注目を集めており、例えば
下水汚泥焼却灰を含む成形原料を成形、焼成して建材を
製造する方法がある。In terms of practical use of the effective use of the sewage sludge, its use as a construction material has been attracting attention. For example, there is a method of forming a building material containing sewage sludge incineration ash and firing the building material. .
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
下水汚泥焼却灰を用いた建材の製造方法では、焼成によ
るエネルギー消費が大きいという欠点がある。However, the conventional method for manufacturing a building material using sewage sludge incineration ash has a drawback that energy consumption due to firing is large.
【０００６】本発明は上記従来の問題点を解決し、下水
汚泥焼却灰を使用して高強度建材を低消費エネルギーに
て製造する方法を提供することを目的とする。It is an object of the present invention to solve the above conventional problems and to provide a method for producing a high-strength building material with low energy consumption by using sewage sludge incineration ash.
【０００７】[0007]
【課題を解決するための手段】本発明の建材の製造方法
は、下水汚泥焼却灰と、石灰と、藁及び／又は無機鉱物
繊維とを混合した後、成形し、次いでオートクレーブ処
理することを特徴とする。The method for producing a building material according to the present invention is characterized in that sewage sludge incineration ash, lime, straw and / or inorganic mineral fiber are mixed, molded, and then autoclaved. And
【０００８】以下に本発明を詳細に説明する。The present invention will be described in detail below.
【０００９】本発明の方法においては、まず、下水汚泥
焼却灰と、石灰と、藁及び／又は無機鉱物繊維とを混合
して成形原料を製造する。In the method of the present invention, first, sewage sludge incineration ash, lime, and straw and / or inorganic mineral fibers are mixed to produce a forming raw material.
【００１０】この場合、各材料の混合割合は、次のよう
な範囲とするのが好ましい。In this case, the mixing ratio of each material is preferably in the following range.
【００１１】下水汚泥焼却灰：１００重量部 石灰：２０〜１００重量部 藁及び／又は無機鉱物繊維：５〜２０重量部 なお、石灰としては生石灰，消石灰等を用いることがで
きる。また、無機鉱物繊維としては、ワラストナイト，
蛇紋岩等を用いることができる。なお、藁は長さ１０〜
４０ｍｍ程度に切断して混合するのが好ましい。また、
無機鉱物繊維についても必要に応じて適宜切断する。Sewage sludge incineration ash: 100 parts by weight Lime: 20 to 100 parts by weight Straw and / or inorganic mineral fibers: 5 to 20 parts by weight As lime, quick lime, slaked lime and the like can be used. As the inorganic mineral fiber, wollastonite,
Serpentine and the like can be used. The length of straw is 10
It is preferable to cut into about 40 mm and mix. Also,
Inorganic mineral fibers are also cut as needed.
【００１２】下水汚泥焼却灰と、石灰と、藁及び／又は
無機鉱物繊維とを混合して得られた成形原料は、成形
し、次いでオートクレーブ処理する。A molding raw material obtained by mixing sewage sludge incinerated ash, lime, and straw and / or inorganic mineral fibers is molded and then autoclaved.
【００１３】ここで成形は、一軸加圧成形，振動プレス
成形により行なうことができ、例えば一軸加圧成形法の
場合、成形条件は面圧１００〜３００ｋｇｆ／ｃｍ2 程
度で行なうのが好ましい。The molding can be carried out by uniaxial pressure molding or vibration press molding. For example, in the case of the uniaxial pressure molding method, the molding condition is preferably a surface pressure of 100 to 300 kgf / cm 2 .
【００１４】また、成形後のオートクレーブ処理条件と
しては、次のような条件を採用するのが好ましい。The following conditions are preferably adopted as the autoclave treatment conditions after molding.
【００１５】オートクレーブ処理条件 温度：１００〜２００℃ 処理時間：３〜７ｈｒ これにより、床材、壁材等として有用な高強度建材を製
造することができる。 Autoclave treatment conditions Temperature: 100 to 200 ° C. Treatment time: 3 to 7 hours As a result, a high-strength building material useful as a floor material, a wall material or the like can be manufactured.
【００１６】[0016]
【作用】下水汚泥焼却灰と石灰とを成形してオートクレ
ーブ処理することにより、下水汚泥焼却灰中のＳｉＯ
2 ，ＣａＯと石灰（ＣａＯ，Ｃａ（ＯＨ）2 ）が下記の
如く反応してケイ酸カルシウム水和物を生成して硬化す
る。[Function] SiO in sewage sludge incineration ash is obtained by molding sewage sludge incineration ash and lime and subjecting to autoclave treatment.
2 , CaO and lime (CaO, Ca (OH) 2 ) react as described below to form calcium silicate hydrate and harden.
【００１７】 Ｃａ（ＯＨ）2 ＋ＳｉＯ2 →ケイ酸カルシウム水和物 この硬化反応はオートクレーブ処理により促進され、反
応は円滑に進行する。Ca (OH) 2 + SiO 2 → calcium silicate hydrate This hardening reaction is promoted by the autoclave treatment, and the reaction proceeds smoothly.
【００１８】本発明においては、成形原料として藁及び
／又は無機鉱物繊維を配合するため、藁に付着している
ＳｉＯ2 分の一部、或いは、無機鉱物繊維中のＳｉＯ2
分の一部もＣａ（ＯＨ）2 と反応して硬化を促進させ
る。しかも、これら藁，無機鉱物繊維の繊維による強度
向上効果により、得られる建材は著しく高強度なものと
なる。また、本発明においては、焼成を行なわないた
め、従来の焼成を行なうものに比べて、消費エネルギー
が小さくてすむ。[0018] In the present invention, to formulate a straw and / or inorganic mineral fibers as a molding material, a portion of the SiO 2 minutes attached to straw, or, SiO 2 inorganic mineral fibers
Some of the minutes also react with Ca (OH) 2 to accelerate curing. Moreover, the resulting building material becomes remarkably high in strength due to the strength-improving effect of the straw and the inorganic mineral fibers. Further, in the present invention, since the firing is not performed, the energy consumption is smaller than that of the conventional firing.
【００１９】本発明において、特に藁を使用する場合に
は、下水汚泥焼却灰のみならず藁の有効利用を図ること
もでき、省資源の面で有利である。In the present invention, particularly when straw is used, not only sewage sludge incineration ash but also straw can be effectively utilized, which is advantageous in terms of resource saving.
【００２０】[0020]
【実施例】以下に実施例及び比較例を挙げて本発明をよ
り具体的に説明する。EXAMPLES The present invention will be described more specifically with reference to Examples and Comparative Examples below.
【００２１】実施例１〜３ 表１に示す配合にて成形原料を製造し、下記条件にて一
軸加圧成形し、次いで、下記条件にてオートクレーブ処
理して２０ｃｍ×２０ｃｍ×４０ｃｍの建材を製造し
た。Examples 1 to 3 A molding raw material was produced according to the composition shown in Table 1, uniaxially pressure-formed under the following conditions, and then autoclaved under the following conditions to produce a building material of 20 cm × 20 cm × 40 cm. did.
【００２２】成形条件 面圧：２５０ｋｇｆ／ｃｍ2 オートクレーブ処理条件 温度：１８０℃ 処理時間：５ｈｒ 得られた建材について曲げ強度を測定し、結果を表１に
示した。 Molding condition Surface pressure: 250 kgf / cm 2 Autoclave treatment condition Temperature: 180 ° C. Treatment time: 5 hr The bending strength of the obtained building material was measured, and the results are shown in Table 1.
【００２３】比較例１ 藁を用いなかったこと以外は実施例１と同様に行なっ
て、得られた建材の曲げ強度を測定して結果を表１に示
した。Comparative Example 1 Bending strength of the obtained building material was measured in the same manner as in Example 1 except that straw was not used, and the results are shown in Table 1.
【００２４】表１より明らかなように、本発明の建材の
製造方法によれば下水汚泥焼却灰を有効利用して高強度
建材を安価に得ることができる。As is clear from Table 1, according to the method for manufacturing a building material of the present invention, a high-strength building material can be obtained at a low cost by effectively utilizing sewage sludge incineration ash.
【００２５】[0025]
【表１】 [Table 1]
【００２６】[0026]
【発明の効果】以上詳述した通り、本発明の建材の製造
方法によれば、下水汚泥焼却灰を有効利用して、壁材、
床材等として有用な高強度建材を低消費エネルギーにて
製造することができる。特に、藁を配合する場合には、
下水汚泥焼却灰と共に藁の有効利用を図ることもでき、
工業的に極めて有利である。As described in detail above, according to the method for manufacturing a building material of the present invention, the sewage sludge incineration ash is effectively used to make a wall material,
A high-strength building material useful as a floor material or the like can be manufactured with low energy consumption. Especially when blending straw,
It is also possible to make effective use of straw with sewage sludge incineration ash,
It is extremely advantageous industrially.
───────────────────────────────────────────────────── 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 Ｃ０４Ｂ 14:38） ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location C04B 14:38)
Claims (1)
は無機鉱物繊維とを混合した後、成形し、次いでオート
クレーブ処理することを特徴とする建材の製造方法。1. A method for producing a building material, which comprises mixing sewage sludge incineration ash, lime, straw and / or inorganic mineral fibers, molding, and then autoclaving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21969193A JPH0769705A (en) | 1993-09-03 | 1993-09-03 | Production of building material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21969193A JPH0769705A (en) | 1993-09-03 | 1993-09-03 | Production of building material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0769705A true JPH0769705A (en) | 1995-03-14 |
Family
ID=16739455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21969193A Pending JPH0769705A (en) | 1993-09-03 | 1993-09-03 | Production of building material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0769705A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109867450A (en) * | 2019-03-30 | 2019-06-11 | 肇庆市珈旺环境技术研究院 | Sludge incineration ash cement and preparation and application thereof |
| CN112094101A (en) * | 2020-08-31 | 2020-12-18 | 安徽康健新型建材有限公司 | Formula and production method of urban sludge and coal gangue hollow brick |
-
1993
- 1993-09-03 JP JP21969193A patent/JPH0769705A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109867450A (en) * | 2019-03-30 | 2019-06-11 | 肇庆市珈旺环境技术研究院 | Sludge incineration ash cement and preparation and application thereof |
| CN109867450B (en) * | 2019-03-30 | 2022-04-22 | 肇庆市珈旺环境技术研究院 | Sludge incineration ash cement and preparation and application thereof |
| CN112094101A (en) * | 2020-08-31 | 2020-12-18 | 安徽康健新型建材有限公司 | Formula and production method of urban sludge and coal gangue hollow brick |
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