JPH0215501B2 - - Google Patents
Info
- Publication number
- JPH0215501B2 JPH0215501B2 JP57233235A JP23323582A JPH0215501B2 JP H0215501 B2 JPH0215501 B2 JP H0215501B2 JP 57233235 A JP57233235 A JP 57233235A JP 23323582 A JP23323582 A JP 23323582A JP H0215501 B2 JPH0215501 B2 JP H0215501B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- slag
- cement
- inorganic building
- added
- 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 - Lifetime
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
- 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
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】
本発明は、従来産業廃棄物として埋立てなどに
廃棄処分されていた紙・パルプ工場などから排出
される製紙スラツジを焼却して得られる焼却灰を
無機質建材の原料に混入して、製品の軽量化、強
度向上及び寸法変化の安定化を計ると共に安価に
軽量無機質建材を生産する方法に関する。Detailed Description of the Invention The present invention uses incinerated ash obtained by incinerating paper sludge discharged from paper and pulp factories, which was conventionally disposed of as industrial waste in landfills, etc., to be used as a raw material for inorganic building materials. The present invention relates to a method of producing lightweight inorganic building materials at low cost, while reducing the weight of products, improving strength, and stabilizing dimensional changes.
従来、セメントなどの無機水硬性原料と石綿・
パルプなどの繊維質原料を主成分とする水性スラ
リーを抄造してマツト状原板を得、該原板を養生
硬化して無機質建材を得る方法及びこの無機質建
材の軽量化を計るため軽量骨材としてパーライト
類を水性スラリー中に添加して上記と同様の工程
で軽量無機質建材を得る方法が知られていた。パ
ーライト類の添加は材料組織中に物理的に混合さ
れるのみであり、軽量化は計られるものの、その
添加量に比例して機械的強度を低下する欠点があ
つた。またパーライト類の添加は、そのパーライ
ト類自体が高価であり、得られる製品が高いもの
となる欠点をも有していた。またスラグと石膏と
の混合による石膏系硬化体もまた知られている
が、耐水性が劣り、軽量化できないなどの欠点を
有していた。 Conventionally, inorganic hydraulic raw materials such as cement and asbestos
A method of producing an aqueous slurry mainly composed of fibrous materials such as pulp to obtain a pine-like base plate, curing and hardening the base plate to obtain an inorganic building material, and using perlite as a lightweight aggregate to reduce the weight of this inorganic building material. A method was known in which a lightweight inorganic building material was obtained by adding the same to an aqueous slurry and performing the same process as above. Addition of pearlite only physically mixes it into the material structure, and although weight reduction can be achieved, it has the disadvantage that mechanical strength decreases in proportion to the amount added. Furthermore, the addition of pearlite has the disadvantage that the pearlite itself is expensive and the resulting product is expensive. A gypsum-based cured product made by mixing slag and gypsum is also known, but it has drawbacks such as poor water resistance and the inability to reduce weight.
本発明者らは産業廃棄物としての製紙スラツジ
を焼却して得られる焼却灰を軽量骨材として有効
利用することにより、軽量でしかも機械的強度及
び寸法形状安定性の高い軽量無機質建材を廉価に
提供することに成功した。 The present inventors effectively utilized the incineration ash obtained by incinerating paper sludge as industrial waste as a lightweight aggregate, thereby creating a lightweight inorganic building material that is lightweight and has high mechanical strength and dimensional shape stability at a low cost. succeeded in providing.
本発明に使用される製紙スラツジを焼却し得ら
れる焼却灰はカサ比重0.5と軽く、その組成はシ
リカ（SiO2）25―60％，アルミナ（Al2O3）30―
60％，酸化第二鉄（Fe2O3）0.3―３％，酸化カル
シウム（CaO）２―12％，マグネシア（MgO）
0.4―11％などであり、潜在水硬性を有する。 The incinerated ash obtained by incinerating the papermaking sludge used in the present invention has a light bulk specific gravity of 0.5, and its composition is 25-60% silica (SiO 2 ) and 30-30% alumina (Al 2 O 3 ).
60%, ferric oxide (Fe 2 O 3 ) 0.3-3%, calcium oxide (CaO) 2-12%, magnesia (MgO)
0.4-11%, etc., and has latent hydraulic properties.
以下実施例に基づいて、本発明を更に詳細に説
明する。 The present invention will be described in more detail below based on Examples.
解繊された繊維質原料，スラグ，セメント，製
紙スラツジ焼却灰を混合機，解綿機にて撹拌混合
する。その際、スラグとセメントとは重量比５：
60ないし60：５の割合で混合し、その混合物に対
して繊維質原料を10―50重量％添加、更に上記混
合物に対して、製紙スラツジ焼却灰を10―100重
量％、石膏を0.5―10重量％添加混合する。製紙
スラツジ焼却灰の添加量はスラグ，セメント，繊
維質原料の混合物に対し10重量％以下であると、
機械的強度は向上されるものの、その比重は高く
なり、100重量％以上であると比重は低くなるが、
機械的強度が低下する。製紙スラツジ焼却灰の粒
径は混合物への分散性、抄造時の態スクリーン・
メツシユ等により適宜選択されるが、250―30メ
ツシユパスのものが好ましい。こゝでいう繊維質
原料とは、パルプ，故紙パルプなどセルロース繊
維、石綿、炭素繊維、ポリプロピレン・ナイロ
ン・ビニロンなどの合成繊維、など有機質、無機
質の繊維であつて、それらは各々単独にあるいは
適宜割合で添加混合して用いられ得る。石膏の添
加量はスラグ，セメント，繊維質原料の混合物に
対し0.5重量％以下であるとスラグ，セメントあ
るいは製紙スラツジ焼却灰との反応によるエトリ
ンジヤイトの生成が少なくなり、強度が低下し、
10重量％以上であると余剰の石膏が未反応の状態
で残存し、硬化が遅く、耐水性が低下すると共に
強度も低下する。上記混合物に適量の水を添加
し、撹拌混合して水性スラリーを得る。水性スラ
リーはそのスラリー濃度を0.5―40％とする。水
性スラリーを丸網式抄造機に投入し濾過すること
により抄造し、水分を多量に含む薄マツトを得、
該薄マツトを多層に積層して、生マツトの原板を
得る。尚、長網式抄造機，押出し成形機，流し込
み成型機等により、厚物の生マツトを得、原板と
しても良い。 The defibrated fibrous raw materials, slag, cement, and paper sludge incineration ash are stirred and mixed using a mixer and a delinter. At that time, the weight ratio of slag and cement is 5:
Mix at a ratio of 60 to 60:5, add 10-50% by weight of fibrous raw materials to the mixture, and add 10-100% by weight of paper sludge incineration ash and 0.5-10% of gypsum to the above mixture. Add and mix weight %. The amount of paper sludge incineration ash added to the mixture of slag, cement, and fibrous raw materials is 10% by weight or less.
Although the mechanical strength is improved, the specific gravity becomes high, and if it is over 100% by weight, the specific gravity becomes low, but
Mechanical strength decreases. The particle size of papermaking sludge incineration ash depends on its dispersibility in the mixture, the state during papermaking, the screen and
It is appropriately selected depending on the mesh etc., but one with a mesh pass of 250-30 is preferable. The fibrous raw materials referred to here include organic and inorganic fibers such as cellulose fibers such as pulp and waste paper pulp, asbestos, carbon fibers, and synthetic fibers such as polypropylene, nylon, and vinylon, each of which may be used alone or as appropriate. They can be used by adding and mixing them in different proportions. If the amount of gypsum added is less than 0.5% by weight based on the mixture of slag, cement, and fibrous raw materials, the formation of ettringite due to reaction with the slag, cement, or paper sludge incineration ash will decrease, and the strength will decrease.
If the content is 10% by weight or more, excess gypsum remains in an unreacted state, resulting in slow hardening, reduced water resistance, and reduced strength. Add an appropriate amount of water to the above mixture and mix with stirring to obtain an aqueous slurry. The aqueous slurry has a slurry concentration of 0.5-40%. The aqueous slurry is put into a circular mesh paper making machine and filtered to produce a thin matte containing a large amount of water.
The thin pine is laminated in multiple layers to obtain a raw pine original board. Incidentally, thick raw pine may be obtained using a Fourdrinier paper machine, an extrusion molding machine, a casting machine, etc., and used as a base plate.
次に原板を養生硬化し、定尺裁断することによ
つて製品を得る。原板の養生硬化は自然養生、あ
るいは蒸気養生のいずれの方法を用いても良い。 Next, the original plate is cured and cured, and a product is obtained by cutting it to a specified length. The original plate may be cured by either natural curing or steam curing.
原板の養生の間に、スラグ，セメント，製紙ス
ラツジ焼却灰中の酸化カルシウム（CaO），酸化
アルミニウム（Al2O3）と石膏との反応によりエ
トリンジヤイト（3CaO，Al2O3，3CaSO4，
32H2O）が生成され、またスラグとセメントと
の水和反応によりケイ酸カルシウム水和物が生成
される。更にスラグ，セメント，製紙スラツジ焼
却灰の水硬性も硬化体の形成に寄与する。該硬化
体の強度は初期材令では、セメントの水和物，上
記エトリンジヤイト，ケイ酸カルシウム水和物が
主として寄与し、長期材令ではスラグ，製紙スラ
ツジ焼却灰の水硬性、ケイ酸カルシウム水和物が
更に強度の増加に寄与し、しかも耐水性の向上に
寄与する。 During the curing of the original board, ettringite (3CaO, Al 2 O 3 , 3CaSO 4 ,
32H 2 O) is produced, and calcium silicate hydrate is produced by the hydration reaction between the slag and cement. Furthermore, the hydraulic properties of slag, cement, and paper sludge incineration ash also contribute to the formation of hardened materials. The strength of the hardened material is mainly contributed by cement hydrate, the above-mentioned ettringite, and calcium silicate hydrate in the early wood age, and in the long-term wood age, it is mainly due to the hydraulic properties of slag, papermaking sludge incineration ash, and calcium silicate hydrate. This material further contributes to an increase in strength and, moreover, to an improvement in water resistance.
本発明によれば製紙スラツジ焼却灰の無機質建
材への軽量骨材として有効利用がなれると共に、
それ自体の水硬性により製品の機械的強度の改善
の効果が得られる。又安価な焼却灰を使用するこ
とで廉価に軽量無機質建材を提供できる。 According to the present invention, paper sludge incineration ash can be effectively used as lightweight aggregate for inorganic building materials, and
Its own hydraulic properties have the effect of improving the mechanical strength of the product. Furthermore, by using inexpensive incineration ash, lightweight inorganic building materials can be provided at low cost.
Claims (1)
する水性スラリーを抄造して得られる生マツトを
原板とし、該原板を養生硬化させる無機質建材の
製造方法において、上記水性スラリーが製紙スラ
ツジを焼却して得られる焼却灰と石膏とを含有す
る軽量無機質建材の製造方法。 ３ スラグとセメントとを重量比５：60ないし
60：５の割合で混合したものに、繊維質原料を10
―50重量％添加し、更に上記混合物に対して製紙
スラツジを焼却して得られる焼却灰を10〜100重
量％、石膏を0.5―10重量％添加した後、水を加
え得られる水性スラリーを抄造して生マツトの原
板とし、該原板を養生硬化する軽量無機質建材の
製造方法。[Scope of Claims] 1. A method for producing an inorganic building material in which green pine obtained by paper-making an aqueous slurry mainly composed of slag, cement, and fibrous raw materials is used as a base plate, and the base plate is cured and hardened. A method for producing a lightweight inorganic building material containing gypsum and incineration ash obtained by incinerating paper sludge. 3 The weight ratio of slag and cement is 5:60 or
Add 10% of the fibrous material to the mixture at a ratio of 60:5.
-50% by weight is added, and then 10-100% by weight of incinerated ash obtained by incinerating paper sludge and 0.5-10% by weight of gypsum are added to the above mixture, and then water is added to make the resulting aqueous slurry. A method for producing a lightweight inorganic building material, in which raw pine is used as a raw board and the raw board is cured and hardened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57233235A JPS59128256A (en) | 1982-12-30 | 1982-12-30 | Manufacture of lightweight inorganic construction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57233235A JPS59128256A (en) | 1982-12-30 | 1982-12-30 | Manufacture of lightweight inorganic construction material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59128256A JPS59128256A (en) | 1984-07-24 |
| JPH0215501B2 true JPH0215501B2 (en) | 1990-04-12 |
Family
ID=16951872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57233235A Granted JPS59128256A (en) | 1982-12-30 | 1982-12-30 | Manufacture of lightweight inorganic construction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59128256A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63236744A (en) * | 1987-03-26 | 1988-10-03 | 松下電工株式会社 | Manufacture of inorganic hardened body |
| DE502004000404D1 (en) * | 2004-01-20 | 2006-05-18 | Partlic Georg | Light aggregate for concrete production and process for its production |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5095322A (en) * | 1973-12-25 | 1975-07-29 | ||
| JPS5110833A (en) * | 1974-07-16 | 1976-01-28 | Hiromitsu Katsuta |
-
1982
- 1982-12-30 JP JP57233235A patent/JPS59128256A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59128256A (en) | 1984-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO1994010099A1 (en) | Process for treating fly ash and bottom ash and the resulting product | |
| CN101113090A (en) | A method for manufacturing unburned bricks from sewage plant sludge that is odorless and waste-free | |
| EP0047158B2 (en) | A process for the manufacture of fibre reinforced shaped articles | |
| JPH0254290B2 (en) | ||
| JPH0215501B2 (en) | ||
| JPH0254293B2 (en) | ||
| JPH0555460B2 (en) | ||
| CN111995304A (en) | Method for preparing foam concrete by utilizing solid sulfur ash | |
| JPH0215500B2 (en) | ||
| JPH07101767A (en) | Lightweight inorganic building material | |
| JP2002362959A (en) | Manufacturing method of ceramic wall materials | |
| JPS60176976A (en) | Manufacture of inorganic cured body | |
| JPH0327507B2 (en) | ||
| JP4213405B2 (en) | Fiber-containing gypsum board and manufacturing method thereof | |
| JPH0525825B2 (en) | ||
| KR100263949B1 (en) | A gypsum cement plate without asbestos | |
| JP2002362962A (en) | Manufacturing method of ceramic wall materials | |
| JPH0569787B2 (en) | ||
| JP4008171B2 (en) | Inorganic board and method for producing the same | |
| JP4249833B2 (en) | Method for producing calcium silicate molded body | |
| JPS6172668A (en) | Extrusion molded product and manufacture | |
| SU1678797A1 (en) | Concrete mixture | |
| JPH03177349A (en) | Preparation of inorganic molded product | |
| JPS62191455A (en) | Anhydrous gypsum papered board and manufacture | |
| JPH0211545B2 (en) |