JP2000335955A - Production of hydrothermally solidified article - Google Patents
Production of hydrothermally solidified articleInfo
- Publication number
- JP2000335955A JP2000335955A JP15010399A JP15010399A JP2000335955A JP 2000335955 A JP2000335955 A JP 2000335955A JP 15010399 A JP15010399 A JP 15010399A JP 15010399 A JP15010399 A JP 15010399A JP 2000335955 A JP2000335955 A JP 2000335955A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- strength
- hydrothermally solidified
- substance
- calcareous
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/18—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
-
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は水熱固化体の製造方
法に係り、特に砕石集塵粉を有効利用するための方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a hydrothermally solidified product, and more particularly to a method for effectively utilizing crushed stone dust.
【０００２】[0002]
【従来の技術】砕石集塵粉は、利用用途が無く埋め戻し
処理されており、この有効利用法が期待されている。2. Description of the Related Art Crushed stone dust has no purpose of use and is backfilled, and this method of effective use is expected.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、砕石集塵粉
を有効利用する方法を提供することを目的とする。ま
た、本発明は、強度の高い水熱固化体を製造する方法を
提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for effectively utilizing crushed stone dust. Another object of the present invention is to provide a method for producing a high-strength hydrothermally solidified body.
【０００４】[0004]
【課題を解決するための手段】本発明の水熱固化体の製
造方法は、砕石集塵粉と石灰質物質とを含む原料を形成
し、オートクレーブ処理するものである。According to the present invention, there is provided a method for producing a hydrothermally solidified body, comprising forming a raw material containing crushed stone dust and a calcareous substance, and subjecting the raw material to autoclave treatment.
【０００５】この砕石集塵粉は安価であり、また、Ｓｉ
Ｏ2分に富む微粉であるため反応性が高く、水熱固化体
の強度が高い。この原料に多糖類以外の糖類及び／又は
糖アルコールよりなる強度増大剤を含有させた場合、水
熱固化体の強度が著しく増大するものである。[0005] This crushed stone dust is inexpensive.
Since it is a fine powder rich in O 2 , the reactivity is high and the strength of the hydrothermally solidified product is high. When this raw material contains a strength enhancer comprising a saccharide and / or a sugar alcohol other than the polysaccharide, the strength of the hydrothermally solidified product is significantly increased.
【０００６】なお、土の感触を有する水熱固化体を得る
ために、土と石灰質原料とを成形し、オートクレーブ処
理する技術は公知である。しかし、この技術では、反応
性に乏しい土を原料に使用しているので、固化体の強度
が低いという問題がある。本発明では、土の替わりに砕
石集塵粉を使用しているので、高強度の水熱固化体が得
られる。また、製造された水熱固化体は土の質感を有し
ていることが観察された。[0006] In order to obtain a hydrothermally solidified material having the feel of soil, a technique of shaping the soil and calcareous raw material and performing autoclave treatment is known. However, this technique has a problem that the strength of the solidified body is low because the soil having low reactivity is used as a raw material. In the present invention, since crushed stone dust is used instead of soil, a high-strength hydrothermally solidified body can be obtained. In addition, it was observed that the manufactured hydrothermally solidified product had a texture of soil.
【０００７】[0007]
【発明の実施の形態】本発明に用いられる砕石集塵粉
は、粒度調整された砕石を製造するプラントにおいて、
粉砕工程で発生した微粉を集塵したものである。この砕
石集塵粉の平均粒径は通常１０〜１００μｍ、好ましく
は２０〜５０程度μｍである。BEST MODE FOR CARRYING OUT THE INVENTION The crushed stone dust used in the present invention is used in a plant for producing crushed stone having a controlled particle size.
This is a collection of fine powder generated in the grinding process. The average particle size of the crushed stone dust is usually 10 to 100 μm, preferably about 20 to 50 μm.
【０００８】石灰質物質としては消石灰、生石灰、ポル
トランドセメントなどを使用することができる。砕石集
塵粉と石灰質物質との使用割合はＣａＯ、ＳｉＯ2に換
算したモル比即ちＣａ／Ｓｉ比が０．０５〜３とくに
０．１〜１となるようにするのが好ましい。[0008] As the calcareous substance, slaked lime, quick lime, Portland cement and the like can be used. It is preferable that the usage ratio of the crushed stone dust to the calcareous substance is such that the molar ratio in terms of CaO and SiO 2 , that is, the Ca / Si ratio is 0.05 to 3, particularly 0.1 to 1.
【０００９】強度増大剤としては環状構造を有したキシ
ロース、グルコース、フルクトース等の単糖類及びサッ
カロース等の二糖類が好ましく、とくにキシロース、グ
ルコース、フルクトースが好ましく、キシロースが最も
好ましい。なお、鎖状構造のマンニトール、ソルビトー
ルなどの糖アルコールも用いることができるが、効果は
単糖類や二糖類ほどではない。縮合度の大きいシクロデ
キストリンやセルロース等の多糖類は強度向上には効果
が殆ど無い。原料中の砕石集塵粉と石灰質物質との合量
に対する強度増大剤の割合は０．１〜１ｗｔ％とくに
０．２〜１ｗｔ％とりわけ０．３〜０．８ｗｔ％である
ことが好ましい。As the strength-enhancing agent, monosaccharides such as xylose, glucose and fructose having a cyclic structure and disaccharides such as saccharose are preferred, and xylose, glucose and fructose are particularly preferred, and xylose is most preferred. In addition, sugar alcohols such as mannitol and sorbitol having a chain structure can be used, but the effect is not as great as that of monosaccharides and disaccharides. Polysaccharides such as cyclodextrin and cellulose having a high degree of condensation have little effect on improving strength. The ratio of the strength increasing agent to the total amount of the crushed stone dust and the calcareous substance in the raw material is preferably 0.1 to 1 wt%, more preferably 0.2 to 1 wt%, and particularly preferably 0.3 to 0.8 wt%.
【００１０】これらの原料物質１００重量部に対し水３
〜２０重量部好ましくは５〜１０重量部程度を添加し、
混合及び成形後、好ましくは１１０〜２２０℃とくに１
５０〜１８０℃で１〜２０ｈｒとくに２〜１０ｈｒオー
トクレーブ処理し、水熱固化体を製造する。成形法とし
ては、プレス成形、押出成形など各種の方法を採用する
ことができる。For 100 parts by weight of these raw materials, water 3
About 20 parts by weight, preferably about 5 to 10 parts by weight,
After mixing and molding, preferably at 110 to 220 ° C.
The mixture is subjected to autoclave treatment at 50 to 180 ° C. for 1 to 20 hr, particularly 2 to 10 hr to produce a hydrothermally solidified product. As the molding method, various methods such as press molding and extrusion molding can be adopted.
【００１１】なお、本発明では上記の原料の他に加飾材
料として各種繊維、あるいは珪砂などの骨材などを用い
ることもできる。この繊維材としては植物繊維、石綿、
耐アルカリ性ガラス繊維、ロックウール、スラグウー
ル、炭素繊維、合成繊維、パルプ、金属繊維、有機繊維
などやウイスカー類が挙げられる。これら繊維材は石灰
質原料や砕石集塵粉等に配合して使用され、その配合量
は通常、石灰質原料と砕石集塵粉の合計に対して３０％
以下とくに５％以下とするのが良い。In the present invention, in addition to the above-mentioned raw materials, various fibers or aggregates such as silica sand can be used as a decorating material. As this fiber material, vegetable fiber, asbestos,
Examples include alkali-resistant glass fibers, rock wool, slag wool, carbon fibers, synthetic fibers, pulp, metal fibers, organic fibers, and whiskers. These fibrous materials are used by being mixed with calcareous raw materials and crushed stone dust, etc., and the compounding amount is usually 30% of the total of the calcareous raw materials and crushed stone dust.
The content is particularly preferably 5% or less.
【００１２】[0012]
【実施例】以下に実施例及び比較例により本発明を更に
詳しく説明する。The present invention will be described in more detail with reference to the following Examples and Comparative Examples.
【００１３】実施例１、比較例１ 粒径２００μｍ以下（平均粒径３０μｍ）の砕石集塵粉
８０重量部と試薬消石灰２０重量部に対し水７重量部を
加え、さらに糖類としてキシロース、グルコース、フル
クトース、サッカロース、マンニトール、ソルビトー
ル、シクロデキストリン又はメチルセルロースを添加し
（ただし比較例では添加せず。）、３００ｋｇｆ／ｃｍ
2で１１×１１×１．５ｃｍの大きさの成形体を成形し
た。Example 1, Comparative Example 1 To 80 parts by weight of crushed stone dust having a particle size of 200 μm or less (average particle size of 30 μm) and 20 parts by weight of slaked lime reagent, 7 parts by weight of water were added. Add fructose, saccharose, mannitol, sorbitol, cyclodextrin or methylcellulose (but not in comparative examples), 300 kgf / cm
In step 2 , a molded article having a size of 11 × 11 × 1.5 cm was formed.
【００１４】次いで、この成形体を１７０℃×６ｈｒオ
ートクレーブ処理し、その後８０℃で４８ｈｒ乾燥して
水熱固化体を製造した。この水熱固化体の曲げ強度を測
定した。結果を表１に示す。Next, the molded body was subjected to an autoclave treatment at 170 ° C. for 6 hours and then dried at 80 ° C. for 48 hours to produce a hydrothermally solidified body. The bending strength of this hydrothermally solidified product was measured. Table 1 shows the results.
【００１５】なお、この場合、Ｃａ／Ｓｉ比は０．２５
である。In this case, the Ca / Si ratio is 0.25
It is.
【００１６】表１より、キシロース、グルコース、フル
クトース、サッカロースの添加により曲げ強度が向上す
ること、とくにキシロースが効果的であり次にグルコー
ス及びフルクトースが効果的であることが認められる。
また、マンニトール、ソルビトール、シクロデキストリ
ン、メチルセルロースは効果が少ないか又は殆どない。From Table 1, it can be seen that the addition of xylose, glucose, fructose and saccharose improves the bending strength, in particular that xylose is effective, followed by glucose and fructose.
Also, mannitol, sorbitol, cyclodextrin and methylcellulose have little or no effect.
【００１７】実施例２、比較例２ 原料配合を珪砂８５重量部、消石灰１５重量部とし、糖
類としてグルコースを添加したほかは上記実施例と同様
にして水熱固化体を製造し、その曲げ強度を測定した。
結果を表２に示す。Example 2, Comparative Example 2 A hydrothermally solidified product was produced in the same manner as in the above Example except that the raw materials were 85 parts by weight of silica sand and 15 parts by weight of slaked lime, and glucose was added. Was measured.
Table 2 shows the results.
【００１８】なお、この場合、Ｃａ／Ｓｉ比は０．１８
である。In this case, the Ca / Si ratio is 0.18
It is.
【００１９】実施例３、比較例３ 原料配合を珪砂９０重量部、消石灰１０重量部とし、糖
類としてグルコースを添加したほかは上記実施例と同様
にして水熱固化体を製造し、その曲げ強度を測定した。
結果を表３に示す。Example 3 and Comparative Example 3 A hydrothermally solidified product was produced in the same manner as in the above example except that the raw materials were 90 parts by weight of silica sand and 10 parts by weight of slaked lime, and glucose was added. Was measured.
Table 3 shows the results.
【００２０】なお、この場合、Ｃａ／Ｓｉ比は０．１１
である。In this case, the Ca / Si ratio is 0.11
It is.
【００２１】実施例４、比較例４ 原料配合を珪砂７０重量部、消石灰３０重量部とし、糖
類としてグルコースを添加したほかは上記実施例と同様
にして水熱固化体を製造し、その曲げ強度を測定した。
結果を表４に示す。Example 4, Comparative Example 4 A hydrothermally solidified product was produced in the same manner as in the above Example except that the raw materials were 70 parts by weight of silica sand and 30 parts by weight of slaked lime, and glucose was added as a saccharide. Was measured.
Table 4 shows the results.
【００２２】なお、この場合、Ｃａ／Ｓｉ比は０．４３
である。In this case, the Ca / Si ratio is 0.43
It is.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【表２】 [Table 2]
【００２５】[0025]
【表３】 [Table 3]
【００２６】[0026]
【表４】 [Table 4]
【００２７】[0027]
【発明の効果】以上の通り、本発明によると従来は利用
されていなかった砕石集塵粉を用いて、水熱固化体を製
造することができる。本発明方法は原料に特定の糖類を
加えることにより、高強度の水熱固化体の製造が可能で
ある。As described above, according to the present invention, a hydrothermally solidified body can be produced using crushed stone dust powder which has not been conventionally used. According to the method of the present invention, a high-strength hydrothermally solidified product can be produced by adding a specific saccharide to a raw material.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 北村 和子 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 (72)発明者 関 一登 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 Ｆターム(参考） 4G012 PA25 PB19 PE06 PE08 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kazuko Kitamura 5-1-1 Koiehoncho, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Ichito Seki 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Co., Ltd. F-term (reference) in Inax 4G012 PA25 PB19 PE06 PE08
Claims (4)
形成し、オートクレーブ処理する水熱固化体の製造方
法。1. A method for producing a hydrothermally solidified body, comprising forming a raw material containing crushed stone dust and a calcareous substance and subjecting the raw material to autoclave treatment.
の糖類及び／又は糖アルコールよりなる強度増大剤を含
有することを特徴とする水熱固化体の製造方法。2. The method for producing a hydrothermally solidified product according to claim 1, wherein the raw material contains a strength enhancer comprising a saccharide other than a polysaccharide and / or a sugar alcohol.
造を有した単糖類及び／又は二糖類であることを特徴と
する水熱固化体の製造方法。3. The method for producing a hydrothermally solidified product according to claim 2, wherein the strength-increasing agent is a monosaccharide and / or a disaccharide having a cyclic structure.
質物質と石灰質物質との合計に対する強度増大剤の割合
が０．１〜１ｗｔ％であることを特徴とする水熱固化体
の製造方法。4. The production of a hydrothermally solidified product according to claim 2, wherein the ratio of the strength increasing agent to the total of the siliceous substance and the calcareous substance in the raw material is 0.1 to 1 wt%. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15010399A JP3724258B2 (en) | 1999-05-28 | 1999-05-28 | Method for producing hydrothermal solidified body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15010399A JP3724258B2 (en) | 1999-05-28 | 1999-05-28 | Method for producing hydrothermal solidified body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000335955A true JP2000335955A (en) | 2000-12-05 |
| JP3724258B2 JP3724258B2 (en) | 2005-12-07 |
Family
ID=15489580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15010399A Expired - Fee Related JP3724258B2 (en) | 1999-05-28 | 1999-05-28 | Method for producing hydrothermal solidified body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3724258B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03275134A (en) * | 1990-03-23 | 1991-12-05 | Nippon Jiryoku Senko Kk | Utilization of coal ash |
| JPH07126083A (en) * | 1993-10-28 | 1995-05-16 | Kuraray Co Ltd | Production of formed inorganic article |
| JP2000256055A (en) * | 1999-03-11 | 2000-09-19 | Kobe Steel Ltd | Treatment of silica-containing mud sludge |
-
1999
- 1999-05-28 JP JP15010399A patent/JP3724258B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03275134A (en) * | 1990-03-23 | 1991-12-05 | Nippon Jiryoku Senko Kk | Utilization of coal ash |
| JPH07126083A (en) * | 1993-10-28 | 1995-05-16 | Kuraray Co Ltd | Production of formed inorganic article |
| JP2000256055A (en) * | 1999-03-11 | 2000-09-19 | Kobe Steel Ltd | Treatment of silica-containing mud sludge |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3724258B2 (en) | 2005-12-07 |
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