JP2748206B2 - Method for producing hydrated cured product - Google Patents
Method for producing hydrated cured productInfo
- Publication number
- JP2748206B2 JP2748206B2 JP4040191A JP4019192A JP2748206B2 JP 2748206 B2 JP2748206 B2 JP 2748206B2 JP 4040191 A JP4040191 A JP 4040191A JP 4019192 A JP4019192 A JP 4019192A JP 2748206 B2 JP2748206 B2 JP 2748206B2
- Authority
- JP
- Japan
- Prior art keywords
- cured product
- sio
- hydrated cured
- pressure
- waste
- 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
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- Processing Of Solid Wastes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は水和硬化体の製造方法
に関し、詳しくは産業廃棄物を用いた水和硬化体の製造
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a hydrated cured product, and more particularly to a method for producing a hydrated cured product using industrial waste.
【０００２】[0002]
【発明の背景】近年、各種分野で産業廃棄物が多く発生
し、その処理が問題となっている。BACKGROUND OF THE INVENTION In recent years, a large amount of industrial waste has been generated in various fields, and its disposal has become a problem.
【０００３】これら産業廃棄物の中にはＳｉＯ2を主成
分として含有するものも多く含まれている。例えばキ
ラ，硝子屑，タイル屑，火力発電所等から発生する石炭
灰，鋳込砂屑，汚泥焼却灰等である。Many of these industrial wastes contain SiO 2 as a main component. For example, there are ash, glass dust, tile waste, coal ash generated from thermal power plants, cast sand debris, sludge incineration ash, and the like.
【０００４】ここでキラとは、粘土山から採取した粘土
から硝子産業分野で利用される珪砂分を除き、更に窯業
分野で利用される粒子の細かい蛙目粘土を除いた後に残
る粒子の大きな粘土から成るものであって現在特別の利
用用途がなく、産業廃棄物として捨てられるものであ
る。このキラは通常ＳｉＯ2を８０％以上の量で含有し
ている。[0004] Here, the term "kira" refers to a clay having a large particle size remaining after removing silica sand used in the glass industry from fine clay collected in a clay hill and removing fine-grained Frogme clay used in the ceramic industry. Which has no special use at present and is discarded as industrial waste. This Kira is normally SiO 2 in an amount of 80% or more.
【０００５】また硝子屑は硝子工場等で硝子を加工した
とき等に発生するものであって、同じくＳｉＯ2分に富
んでいる。これもまた特別の利用用途がなく、捨てられ
ているのが実情である。[0005] Glass dust is generated when glass is processed at a glass factory or the like, and is also rich in SiO 2 . This is also abandoned because it has no special use.
【０００６】同様にタイル屑はタイル工場等で発生する
屑であって、同じくＳｉＯ2を多く含有している。Similarly, tile waste is waste generated in a tile factory or the like, and similarly contains a large amount of SiO 2 .
【０００７】一方石炭灰は、石炭火力発電所において石
炭の微粉末を火炎中に投入して一挙に燃焼させたとき等
に生じる灰であって、ＳｉＯ2を主成分とするものであ
る。[0007] On the other hand, coal ash is ash generated when fine powder of coal is put into a flame and burned at once in a coal-fired power plant, and has SiO 2 as a main component.
【０００８】この石炭灰は道路用の骨材とか埋立用の材
料としての用途の外に特別の用途をもたない産業廃棄物
である。[0008] This coal ash is an industrial waste having no special use other than its use as an aggregate for roads or a material for landfill.
【０００９】他方、鋳込砂は鋳造用に用いられた鋳型の
屑で、また汚泥焼却灰は下水等で発生する汚泥を焼却し
たもので、何れもＳｉＯ2を主成分とする産業廃棄物で
ある。On the other hand, casting sand is waste of mold used for casting, and sludge incineration ash is incineration of sludge generated in sewage and the like, and both are industrial wastes mainly composed of SiO 2. is there.
【００１０】その他、釉汚泥は窯業等の分野で用いられ
る釉薬廃棄物を濃縮したものであり、珪質粘土は粒度，
ＳｉＯ2含有量等が不安定で鉄分，ＴｉＯ2分を含むため
利用価値の低い産業廃棄物としての粘土である。In addition, glaze sludge is a concentrate of glaze waste used in the field of ceramics and the like, and siliceous clay has a particle size,
The clay is an industrial waste of low utility because it has an unstable content of SiO 2 and contains iron and TiO 2 .
【００１１】[0011]
【課題を解決するための手段】本発明は、このようなＳ
ｉＯ 2 を成分とする含有する産業廃棄物を用いて有用な
水和硬化体を得ることを目的としてなされたものであっ
て、その要旨は、キラ，硝子屑，タイル屑，石炭灰，鋳
込砂屑，汚泥焼却灰，釉汚泥，スラグ，珪質粘土等Ｓｉ
Ｏ 2 を成分として含有する産業廃棄物の１種又は２種以
上を主材とし、該主材のＳｉＯ2成分と反応して水和硬
化性成分を生成するＣａＯ，Ｃａ（ＯＨ）2の何れか一
方若しくは両方を加えてこれら混合物を圧力窯内で高温
・高圧下で水分と所定時間水熱硬化反応させて水和硬化
体を得ることにある。SUMMARY OF THE INVENTION The present invention provides such an S
The iO 2 with industrial waste containing a component which has been made for the purpose of obtaining a useful hydration cured product and has as its gist, Kira, cullet, tile dust, coal ash, cast
Inclusion sand, sludge incineration ash, glaze sludge, slag, siliceous clay, etc.
Any one of CaO and Ca (OH) 2 , which comprises one or more industrial wastes containing O 2 as a main component and which reacts with the SiO 2 component of the main material to form a hydration-curable component One or both of them are added, and the mixture is subjected to a hydrothermal curing reaction with water at a high temperature and a high pressure in a pressure kiln for a predetermined time to obtain a hydrated cured product.
【００１２】[0012]
【作用及び発明の効果】従来、水和硬化体を得るための
材料として一般的に用いられているのはセメント材料で
ある。Functions and effects of the invention Conventionally, a cement material is generally used as a material for obtaining a hydrated cured product.
【００１３】このセメント材料には、一般に、ＳｉＯ2
とＣａＯとの化合物であるＣ2Ｓ，Ｃ3Ｓが含まれており
（但しＣはＣａＯ，ＳはＳｉＯ2）、これを水と混ぜる
と水と反応して水和生成物を生じてゲル化し、硬化す
る。The cement material generally includes SiO 2
Contains C 2 S and C 3 S, which are compounds of CaO and CaO (where C is CaO and S is SiO 2 ), and when this is mixed with water, it reacts with water to produce a hydration product and gel. And harden.
【００１４】本発明者は上記キラ，硝子屑，タイル屑，
石炭灰，汚泥焼却灰等の産業廃棄物がＳｉＯ2を主成分
として含んでいることに着眼し、そしてこれにライム
（ＣａＯ）を加えて水と反応を行わせたところ、特定条
件の下においてこれらＳｉＯ2，ＣａＯ，水が反応して
水和硬化する事実を確認し、本発明を完成させた。The present inventor has proposed the above-mentioned killer, glass dust, tile waste,
Focusing on the fact that industrial waste such as coal ash and sludge incineration ash contains SiO 2 as a main component, and adding lime (CaO) to this and reacting with water, under specific conditions The fact that these SiO 2 , CaO, and water react and undergo hydration hardening was confirmed, and the present invention was completed.
【００１５】即ちこれらＳｉＯ2，ＣａＯは単にこれを
混ぜ合わせて水と反応させても反応は進行しないが、あ
る条件の下におくと反応が進行し、セメント硬化体と同
様の水和硬化体を生成するのである。That is, these SiO 2 and CaO do not proceed even if they are simply mixed and reacted with water, but the reaction proceeds under a certain condition, and the hydrated cured product similar to the cement cured product is obtained. Is generated.
【００１６】而してＳｉＯ2，ＣａＯと水との反応生成
物、即ち本発明の水和硬化体は、セメント硬化体と同程
度の強度を有することも併せて確認し得た。Thus, it was also confirmed that the reaction product of SiO 2 and CaO with water, ie, the hydrated cured product of the present invention, had the same strength as the cured cement product.
【００１７】本発明によれば、従来これといった用途が
なく、処理に困っていた産業廃棄物を有効に活用してセ
メント硬化体と同様の強度を有する水和硬化体を得るこ
とができる。According to the present invention, a hydrated cured product having the same strength as a cured cement product can be obtained by effectively utilizing industrial waste which has not been conventionally used and which has been difficult to treat.
【００１８】しかも本発明によれば、セメントの硬化反
応に際して障害となるアルカリ分が材料中に含まれてい
てもこれを水和硬化させることが可能であり、また鋳込
砂等炭素分が所定量含有されていても硬化させることが
可能である。Further, according to the present invention, even if the material contains an alkali which is an obstacle to the hardening reaction of cement, it can be hydrated and hardened. Even if it is contained in a fixed amount, it can be cured.
【００１９】さらに石英等の結晶質のものでなく、硝子
等の非晶質の材料でも硬化が可能であるし、ＳｉＯ2分
が少ない材料であっても硬化が可能である。Further, it is possible to cure not only a crystalline material such as quartz but also an amorphous material such as glass, and it is possible to cure even a material having a small amount of SiO 2 .
【００２０】但し硬化反応を円滑に行わせるためには、
ＳｉＯ2分を３０％以上含有していることが望ましく、
より望ましくは５０％以上である。However, in order for the curing reaction to proceed smoothly,
It is desirable to contain at least 30% of SiO 2 ,
More preferably, it is 50% or more.
【００２１】また硬化剤としては酸化カルシウム（Ｃａ
Ｏ）の外、水酸化カルシウム（Ｃａ（ＯＨ）2）を用い
ることができる。As a curing agent, calcium oxide (Ca)
In addition to O), calcium hydroxide (Ca (OH) 2 ) can be used.
【００２２】更にこのカルシウム系硬化剤のＳｉＯ2に
対する比率は、ＳｉＯ2１００に対して、カルシウム系
硬化剤をモル比で３０〜３００とすることが望ましく、
より望ましくは５０〜２００である。Furthermore ratio SiO 2 of the calcium-based curing agent with respect to SiO 2 100, it is desirable to 30-300 in a molar ratio of calcium-based curing agent,
More preferably, it is 50 to 200.
【００２３】本発明は、このようなＣａＯ，Ｃａ（Ｏ
Ｈ）2とＳｉＯ2とを高温・高圧下で水と反応させるもの
であり、その条件としては圧力を１kgf／cm2以上，温度
を９０〜３００℃，反応時間を３０分以上とすることが
望ましく、より望ましくは圧力６kgf／cm2以上，温度１
６０℃以上，反応時間２時間以上である。The present invention relates to such CaO, Ca (O
H) is 2 to that it is reacted with water and a SiO 2 under high temperature and pressure, pressure 1 kgf / cm 2 or greater in conditions, the temperature 90 to 300 ° C., that the reaction time is 30 minutes or more Desirable, more desirably, pressure 6 kgf / cm 2 or more, temperature 1
The reaction time is 60 ° C. or more and the reaction time is 2 hours or more.
【００２４】以上の条件を採用することにより、水和硬
化反応を良好に進行させることができる。By employing the above conditions, the hydration hardening reaction can be favorably advanced.
【００２５】[0025]
【実施例】次に本発明の特徴を更に明確にすべく、以下
にその実施例を詳述する。Next, in order to further clarify the features of the present invention, examples thereof will be described in detail below.
【００２６】［実施例１］ 表１に示す各種割合で石炭灰とＣａＯとを調合してこれ
をＡｌ2Ｏ3乳鉢で混練し、その混合物８ｇを１軸加圧成
形機にて面圧３００kgf/ｃｍ2でプレス成形し、１０×
１０×４０ｍｍ，１０×１０×１０ｍｍの成形体を得
た。Example 1 Coal ash and CaO were mixed at various ratios shown in Table 1, kneaded in an Al 2 O 3 mortar, and 8 g of the mixture was pressed with a uniaxial pressing machine at a surface pressure of 300 kgf. press molding at 10 / cm 2
A molded body of 10 × 40 mm and 10 × 10 × 10 mm was obtained.
【００２７】この成形体をオートクレーブにより１８０
℃飽和水蒸気圧（１０kgf/ｃｍ2）で５時間処理した。
そして得られた水和硬化体の曲げ強度及び圧縮強度を測
定したところ、表２の如き結果を得た。The molded product was subjected to autoclave 180
The treatment was carried out at a saturated steam pressure of 10 ° C. (10 kgf / cm 2 ) for 5 hours.
When the bending strength and the compressive strength of the obtained hydrated cured product were measured, the results shown in Table 2 were obtained.
【００２８】尚曲げ試験は１０×１０×４０ｍｍの供試
体を用いて３点曲げを行い、また圧縮試験は１０×１０
×１０ｍｍの供試体を用いて行った。In the bending test, three-point bending was performed using a test specimen of 10 × 10 × 40 mm.
The test was performed using a specimen of × 10 mm.
【００２９】[0029]
【表１】 [Table 1]
【００３０】[0030]
【表２】 [Table 2]
【００３１】尚、表２においてＮｏ＊２については測定
不可と表示しているが、これは水和硬化反応が進まず、
測定できるような強度が出なかったことを意味してい
る。以上の結果から、本発明に従って処理することによ
り産業廃棄物としての石炭灰を用いても有用な水和硬化
体を得ることができること、またこの水和硬化体はセメ
ント硬化体と同等程度の強度を有することが分かる。In Table 2, it is indicated that No * 2 cannot be measured, but this indicates that the hydration hardening reaction does not proceed.
This means that no measurable strength was obtained. From the above results, it is possible to obtain a useful hydrated cured product even by using coal ash as industrial waste by treating according to the present invention, and this hydrated cured product has a strength equivalent to that of a cement cured product. It can be seen that
【００３２】［実施例２］ 表３に示す各種産業廃棄物とＣａＯとを調合して、実施
例１と同様の手順で成形体の製造及び水和硬化反応を行
い、得られた水和硬化体の曲げ強度，圧縮強度を測定し
た。結果が表３に併せて示してある。Example 2 Various industrial wastes shown in Table 3 were mixed with CaO, and a molded article was produced and subjected to a hydration hardening reaction in the same procedure as in Example 1, and the obtained hydration hardening was obtained. The flexural strength and compressive strength of the body were measured. The results are also shown in Table 3.
【００３３】[0033]
【表３】 [Table 3]
【００３４】この結果から、石炭灰以外の各種産業廃棄
物を用いることによっても強度に優れた水和硬化体の得
られることが分かる。From these results, it is understood that a hydrated cured product having excellent strength can be obtained by using various industrial wastes other than coal ash.
【００３５】以上本発明の実施例を詳述したがこれはあ
くまで一例示であり、本発明はその主旨を逸脱しない範
囲において、当業者の知識に基づき様々な変更を加えた
態様で実施可能である。Although the embodiment of the present invention has been described in detail above, this is merely an example, and the present invention can be implemented in various modified forms based on the knowledge of those skilled in the art without departing from the gist of the present invention. is there.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山▲崎▼ 悟 愛知県常滑市鯉江本町５丁目１番地 株 式会社 イナックス内 (56)参考文献 特開 昭57−201576（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Satoru Yamazaki 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Inax Corporation (56) References JP-A-57-201576 (JP, A)
Claims (2)
砂屑，汚泥焼却灰，釉汚泥，スラグ，珪質粘土等ＳｉＯ
2 を成分として含有する産業廃棄物の１種又は２種以上
を主材とし、該主材のＳｉＯ2成分と反応して水和硬化
性成分を生成するＣａＯ，Ｃａ（ＯＨ）2の何れか一方
若しくは両方を加えてこれら混合物を圧力窯内で高温・
高圧下で水分と所定時間水熱硬化反応させて水和硬化体
を得ることを特徴とする水和硬化体の製造方法。1. Kira, glass waste, tile waste, coal ash, casting
Debris, sludge incineration ash, glaze sludge, slag, siliceous clay, SiO
One or more industrial waste containing 2 as component as a main material, CaO which reacts with the SiO 2 component of the main material to produce a wettable curable component, any of Ca (OH) 2 Add one or both and heat the mixture in a pressure kiln
A method for producing a hydrated cured product, comprising obtaining a hydrated cured product by performing a hydrothermal curing reaction with water under high pressure for a predetermined time.
／cm2以上，温度９０〜３００℃，時間３０分以上の条
件で行うことを特徴とする請求項１に記載の水和硬化体
の製造方法。2. The reaction in the pressure kiln is performed at a pressure of 1 kgf.
The method for producing a hydrated cured product according to claim 1, wherein the method is performed under the conditions of at least / cm 2 , a temperature of 90 to 300 ° C, and a time of 30 minutes or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4040191A JP2748206B2 (en) | 1992-01-30 | 1992-01-30 | Method for producing hydrated cured product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4040191A JP2748206B2 (en) | 1992-01-30 | 1992-01-30 | Method for producing hydrated cured product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05208182A JPH05208182A (en) | 1993-08-20 |
| JP2748206B2 true JP2748206B2 (en) | 1998-05-06 |
Family
ID=12573888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4040191A Expired - Lifetime JP2748206B2 (en) | 1992-01-30 | 1992-01-30 | Method for producing hydrated cured product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2748206B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0749818A3 (en) * | 1995-06-19 | 1997-12-03 | Ein Engineering Co., Ltd. | Reprocessed thermoset resin, method for reprocessing thermoset resin foamed material and method for molding the reprocessed resin |
| JP2016169132A (en) * | 2015-03-13 | 2016-09-23 | 住友金属鉱山シポレックス株式会社 | Manufacturing method of cement-based cured body |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57201576A (en) * | 1981-05-30 | 1982-12-10 | Osamu Kurachi | Chemical treatment of industrial waste |
-
1992
- 1992-01-30 JP JP4040191A patent/JP2748206B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05208182A (en) | 1993-08-20 |
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