JPH10259053A - Ceramic product - Google Patents
Ceramic productInfo
- Publication number
- JPH10259053A JPH10259053A JP9068468A JP6846897A JPH10259053A JP H10259053 A JPH10259053 A JP H10259053A JP 9068468 A JP9068468 A JP 9068468A JP 6846897 A JP6846897 A JP 6846897A JP H10259053 A JPH10259053 A JP H10259053A
- Authority
- JP
- Japan
- Prior art keywords
- fly ash
- ceramic product
- slag
- slug
- kiln
- 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
-
- 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
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、廃棄物の焼却飛灰
や固体燃料の燃焼飛灰及び窯炉溶融スラグを用いた、タ
イル、ブロック、煉瓦、瓦等の窯業製品に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to ceramic products such as tiles, blocks, bricks, and tiles using incineration fly ash of waste, combustion fly ash of solid fuel, and furnace slag.
【０００２】[0002]
【従来の技術】従来、石炭灰やスラグを利用して、タイ
ルやブロック等の窯業製品を製造する方法は既に知られ
ている。例えば、特開昭５８−３２０５９号公報には、
スラグ又はフライアッシュと粘土及び天然ガラスからな
る陶磁器用素地組成物が開示されている。この方法で
は、８００〜１１００℃の低温で焼成することができる
が、粘土及び天然ガラスが主成分となっているため、コ
ストが高くなり、またスラグ又はフライアッシュの混合
割合は、１〜１５％と少なく、廃棄物の減量化はあまり
望めない。また、特開平５−５８７０７号公報には、焼
却灰等の廃棄物にガラス粉等を混合し、１１００℃以上
で焼成してタイル等とする方法が開示されている。しか
しながら、この方法では、１１００℃以上で焼成しなけ
ればならないため、熱効率、省エネルギ−の面からは不
十分であり、また廃棄物の使用割合も７０％までであ
り、廃棄物の活用面からも不十分である。2. Description of the Related Art Conventionally, methods for producing ceramic products such as tiles and blocks using coal ash and slag are already known. For example, JP-A-58-32059 discloses that
A ceramic body composition comprising slag or fly ash, clay and natural glass is disclosed. In this method, firing can be performed at a low temperature of 800 to 1100 ° C. However, since clay and natural glass are the main components, the cost is high, and the mixing ratio of slag or fly ash is 1 to 15%. The amount of waste is not so much expected. Japanese Patent Application Laid-Open No. 5-58707 discloses a method in which glass powder or the like is mixed with waste such as incineration ash and fired at 1100 ° C. or more to form a tile or the like. However, this method must be fired at 1100 ° C. or more, which is insufficient from the viewpoint of thermal efficiency and energy saving. Further, the usage ratio of waste is up to 70%, and from the viewpoint of utilization of waste. Is also inadequate.
【０００３】[0003]
【発明が解決しようとする課題】タイル、ブロック、煉
瓦、瓦等の窯業製品は、その製造原料が豊富で、かつ低
廉であることが求められている。しかも、その製造工程
での焼成に当たっても、より熱効率をよくする省エネル
ギ−化を求められている。一方、石炭灰やスラグ等は、
従来産業廃棄物として、その処理に困っており、無機質
粉体の代替使用が進められ、その際の利用効率の向上が
求められている。本発明の目的は、窯業製品の主原料と
してフライアッシュ及び窯炉溶融スラグの冷却固化後の
粉砕物を使用することにより、廃棄物の利用率を９５％
以上とすることができ、かつ窯業製品を製造する際に８
００〜１０００℃の極めて低い温度で焼成することがで
きて省エネルギ−化が図れる窯業製品を提供することに
ある。Ceramic products such as tiles, blocks, bricks, and tiles are required to be rich in raw materials for production and to be inexpensive. In addition, even when firing in the manufacturing process, there is a demand for energy saving for improving thermal efficiency. On the other hand, coal ash and slag
Conventionally, as industrial waste, it has been difficult to treat it, and alternative use of inorganic powder has been promoted, and improvement in utilization efficiency at that time has been demanded. An object of the present invention is to reduce the waste utilization rate by 95% by using fly ash and pulverized material obtained by cooling and solidifying the furnace slag as a main raw material of ceramic products.
And 8 when producing ceramic products.
An object of the present invention is to provide a ceramic product which can be fired at an extremely low temperature of 00 to 1000 ° C. and can save energy.
【０００４】[0004]
【課題を解決するための手段】本発明は、フライアッシ
ュ及び窯炉溶融スラグの冷却固化後の粉砕物から構成さ
れてなることを特徴とする窯業製品に関するものであ
る。SUMMARY OF THE INVENTION The present invention relates to a ceramic product comprising fly ash and a crushed product of a furnace slag that has been cooled and solidified.
【０００５】本発明の窯業製品は、フライアッシュ及び
窯炉溶融スラグの冷却固化後の粉砕物から構成されてな
る。フライアッシュとしては、一般廃棄物の焼却飛灰、
下水汚泥等の産業廃棄物の焼却飛灰及び石炭、石油コー
クス、ＣＷＭ又はこれらの混合物である固体燃料の燃焼
飛灰から選択される一種以上が好ましい。窯炉溶融スラ
グとしては、固体燃料ガス化炉スラグ及び／又は金属溶
融精錬炉スラグが好ましい。固体燃料ガス化炉スラグ
は、石炭、石油コークス、ＣＷＭ又はこれらの混合物を
噴流床で酸素及び／又は空気を酸化剤としてガス化させ
た場合に発生するスラグであり、金属溶融精錬炉スラグ
は、高炉又は製鋼用電気炉等で発生するスラグである。
本発明においては、前記スラグの冷却固化後の粉砕物が
用いられ、粉砕物の粒度は、５００μｍ以下、好ましく
は、１５０μｍ以下が望ましい。粉砕物の粒度が５００
μｍよりも大きくなると、成形性が悪くなるので好まし
くない。[0005] The ceramic product of the present invention is composed of pulverized product after cooling and solidifying fly ash and kiln molten slag. As fly ash, incineration fly ash of general waste,
At least one selected from incineration fly ash of industrial waste such as sewage sludge and combustion fly ash of solid fuel which is coal, petroleum coke, CWM or a mixture thereof is preferable. As the kiln slag, a solid fuel gasifier slag and / or a metal smelting furnace slag are preferable. The solid fuel gasifier slag is slag generated when coal, petroleum coke, CWM or a mixture thereof is gasified in a spouted bed with oxygen and / or air as an oxidant. Slag generated in a blast furnace or an electric furnace for steelmaking.
In the present invention, a pulverized product after cooling and solidifying the slag is used, and the particle size of the pulverized product is 500 μm or less, preferably 150 μm or less. 500 ground particles
If it is larger than μm, the moldability is deteriorated, which is not preferable.
【０００６】本発明の窯業製品における各構成成分の割
合は、フライアッシュ１０〜８０重量部、好ましくは、
２０〜７０重量部、及び窯炉溶融スラグ９０〜２０重量
部、好ましくは、８０〜３０重量部であることが望まし
い。フライアッシュが少なく、窯炉溶融スラグが多いほ
ど、得られる窯業製品の仕上がり強度は高くなるが、フ
ライアッシュを１０重量部よりも少なく、窯炉溶融スラ
グを９０重量部よりも多くしても、仕上がり強度は変わ
らず、増加分の窯炉溶融スラグを粉砕する動力が増すの
で好ましくない。また、フライアッシュが８０重量部よ
りも多く、窯炉溶融スラグが２０重量部よりも少ないと
仕上がり強度が小さくなるので好ましくない。また、本
発明においては、フライアッシュと窯炉溶融スラグの冷
却固化後の粉砕物の割合を調整することにより、得られ
る窯業製品の仕上がり強度、見掛け密度を調整すること
ができ、目的に応じた製品とすることができる。The proportion of each component in the ceramic product of the present invention is 10 to 80 parts by weight of fly ash, preferably
It is desirable that the amount be 20 to 70 parts by weight, and 90 to 20 parts by weight, preferably 80 to 30 parts by weight of the furnace slag. The less the fly ash, the more the furnace melting slag, the higher the finished strength of the resulting ceramic product, but even if the fly ash is less than 10 parts by weight and the furnace melting slag is more than 90 parts by weight, The finished strength is not changed, and the power for pulverizing the furnace slag is increased, which is not preferable. On the other hand, if the amount of fly ash is more than 80 parts by weight and the amount of the furnace slag is less than 20 parts by weight, the finished strength is undesirably reduced. Further, in the present invention, by adjusting the ratio of the crushed material after cooling and solidification of fly ash and kiln melting slag, the finished strength of the resulting ceramic product, the apparent density can be adjusted, according to the purpose Products.
【０００７】本発明では、フライアッシュ及び窯炉溶融
スラグの冷却固化後の粉砕物からなる主原料に、成形性
を高めたり、成形物の強度を高めるためにバインダーを
配合してもよい。バインダーの配合量は、主原料１００
重量部に対し、５重量部以下が好ましい。配合量が５重
量部よりも多くなると、主原料の利用率が低くなるので
好ましくない。バインダーとしては、有機系結合剤及び
／又は無機系結合剤が用いられる。有機系結合剤として
は、ポリビニルアルコール、カルボキシメチルセルロー
ス、澱粉、デキストリン、リグニン等が挙げられる。無
機系結合剤としては、カオリン系又はベントナイト等の
粘土鉱物や水ガラス等が挙げられる。[0007] In the present invention, a binder may be blended with the main raw material consisting of the crushed material obtained by cooling and solidifying the fly ash and the furnace slag after cooling and solidifying in order to enhance the formability and the strength of the molded product. The amount of the binder is 100
It is preferably 5 parts by weight or less based on parts by weight. If the amount is more than 5 parts by weight, the utilization rate of the main raw material is lowered, which is not preferable. As the binder, an organic binder and / or an inorganic binder is used. Examples of the organic binder include polyvinyl alcohol, carboxymethyl cellulose, starch, dextrin, lignin and the like. Examples of the inorganic binder include clay minerals such as kaolin or bentonite and water glass.
【０００８】本発明においては、フライアッシュ及び窯
炉溶融スラグの冷却固化後の粉砕物を水と混合し、成形
後、焼成することにより、窯業製品を製造することがで
きる。混合物の成形は、湿式法、乾式法のいずれでも行
える。例えば、湿式法では、スラリー状の混合物を通常
の成形法と同様に型枠に流し込み、風乾する。また、乾
式法では、成形に適した水分に調整したパサパサ状の混
合物を通常の成形法と同様に型枠に充填し、所定の圧力
で圧縮成形し、風乾する。次いで、風乾された成形物を
焼成することにより、窯業製品が得られる。焼成は、流
体燃料を熱源としても、電気加熱でもよく、方法も回分
操作でも連続操作でもよい。焼成温度は８００〜１００
０℃の範囲が好ましい。望ましくは、成形物全体が３０
〜６０分間８５０℃前後に保持されるとよい。焼成温度
が８００℃よりも低くなると、得られる窯業製品の強度
が低くなるので好ましくない。また、１０００℃よりも
高くなると熱効率が悪くなり、省エネルギ−化が図れな
いので好ましくない。In the present invention, a ceramic product can be manufactured by mixing the crushed material of the fly ash and the furnace slag after cooling and solidification with water, molding and firing. The mixture can be formed by either a wet method or a dry method. For example, in a wet method, a slurry-like mixture is poured into a mold as in a normal molding method, and air-dried. In the dry method, a mold-like mixture prepared to have a moisture content suitable for molding is filled in a mold in the same manner as in a usual molding method, compression-molded at a predetermined pressure, and air-dried. Next, the air dried product is fired to obtain a ceramic product. The calcination may be performed using a fluid fuel as a heat source or electric heating, and the method may be a batch operation or a continuous operation. Firing temperature is 800-100
A range of 0 ° C. is preferred. Desirably, the entire molded product is 30
The temperature is preferably maintained at about 850 ° C. for about 60 minutes. If the firing temperature is lower than 800 ° C., the strength of the obtained ceramic product is lowered, which is not preferable. On the other hand, if the temperature is higher than 1000 ° C., the thermal efficiency deteriorates and energy saving cannot be achieved, which is not preferable.
【０００９】[0009]
【発明の効果】本発明の窯業製品は、主原料としてフラ
イアッシュ及び窯炉溶融スラグの冷却固化後の粉砕物を
使用するので、廃棄物の利用率を９５％以上とすること
ができる。本発明における窯炉溶融スラグの冷却固化後
の粉砕物は、非晶質であることが特徴である。窯炉溶融
スラグを構成する主成分のＳｉＯ2がＳｉＯ4四面体のネ
ットワークを構成し、比較的低い温度で軟化、流動化を
呈するため、８００〜１０００℃の極めて低い温度でも
高強度の窯業製品を製造することができ、熱効率が良
く、省エネルギ−化が図れる。According to the ceramic product of the present invention, fly ash and the crushed material obtained by cooling and solidifying the furnace slag are used as the main raw material, so that the utilization rate of the waste can be 95% or more. The pulverized product after cooling and solidifying the kiln melt slag in the present invention is characterized by being amorphous. Since the main component SiO 2 constituting the kiln melting slag forms a SiO 4 tetrahedral network and exhibits softening and fluidization at a relatively low temperature, a ceramic product with high strength even at an extremely low temperature of 800 to 1000 ° C. Can be manufactured, the thermal efficiency is good, and energy saving can be achieved.
【００１０】[0010]
【実施例】以下に実施例を示す。 実施例１ 主原料として表１に示したフライアッシュ及び窯炉溶融
スラグの冷却固化後の粉砕物を所定割合で混合し、主原
料１００重量部に対し、水２５重量部及び所定量のバイ
ンダーを加えて混練した。この混合物を径１３ｍｍφ、
高さ４０ｍｍの型枠に充填し、加圧してペレットを成形
した。ペレットを風乾後、所定温度条件で４０分間焼成
し、試験体を調製した。得られた試験体の圧縮強度、見
掛け密度を測定した結果を表１に示す。Examples are shown below. Example 1 As a main material, fly ash shown in Table 1 and a crushed material after cooling and solidification of a kiln melting slag were mixed in a predetermined ratio, and 25 parts by weight of water and a predetermined amount of a binder were mixed with 100 parts by weight of the main material. In addition, it was kneaded. This mixture is 13 mm in diameter,
A 40 mm height mold was filled and pressed to form a pellet. After air-drying the pellets, the pellets were fired at a predetermined temperature condition for 40 minutes to prepare a test body. Table 1 shows the results of measuring the compressive strength and apparent density of the obtained test specimens.
【００１１】[0011]
【表１】 [Table 1]
Claims (7)
却固化後の粉砕物から構成されてなることを特徴とする
窯業製品。1. A ceramic product comprising a fly ash and a crushed material of a furnace furnace molten slag after cooling and solidification.
炉溶融スラグ９０〜２０重量部から構成されてなる請求
項１記載の窯業製品。2. The ceramic product according to claim 1, comprising 10 to 80 parts by weight of fly ash and 90 to 20 parts by weight of furnace slag.
灰、産業廃棄物の焼却飛灰及び固体燃料の燃焼飛灰から
選択される一種以上である請求項１記載の窯業製品。3. The ceramic product according to claim 1, wherein the fly ash is at least one selected from incineration fly ash of general waste, incineration fly ash of industrial waste, and combustion fly ash of solid fuel.
ラグ及び／又は金属溶融精錬炉スラグである請求項１記
載の窯業製品。4. The ceramic product according to claim 1, wherein the kiln slag is a solid fuel gasifier slag and / or a metal smelting furnace slag.
０重量部に対し、バインダーが５重量部以下の割合で配
合されてなる請求項１記載の窯業製品。5. Fly ash and kiln melting slag 10
The ceramic product according to claim 1, wherein the binder is blended in an amount of 5 parts by weight or less with respect to 0 parts by weight.
却固化後の粉砕物に水を混合し、成形後、焼成してなる
ことを特徴とする窯業製品。6. A ceramic product obtained by mixing water after cooling and solidifying a fly ash and a furnace slag melt slag, molding, and firing.
とを特徴とする請求項６記載の窯業製品。7. The ceramic product according to claim 6, wherein the firing temperature is 800 to 1000 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06846897A JP3719304B2 (en) | 1997-03-21 | 1997-03-21 | Ceramic products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06846897A JP3719304B2 (en) | 1997-03-21 | 1997-03-21 | Ceramic products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10259053A true JPH10259053A (en) | 1998-09-29 |
| JP3719304B2 JP3719304B2 (en) | 2005-11-24 |
Family
ID=13374560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06846897A Expired - Lifetime JP3719304B2 (en) | 1997-03-21 | 1997-03-21 | Ceramic products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3719304B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002527334A (en) * | 1998-10-15 | 2002-08-27 | リー，キ−ガン | Ceramic composition using solid waste as raw material and method for producing the same |
| CN110002844A (en) * | 2019-04-12 | 2019-07-12 | 东南大学 | A kind of municipal sludge heat-preserving sintered brick and preparation method thereof |
| JP2020138888A (en) * | 2019-02-28 | 2020-09-03 | 日鉄日新製鋼株式会社 | Ceramics production method and ceramics |
| IT202100028286A1 (en) * | 2021-11-05 | 2023-05-05 | Lamberti Spa | PROCESS FOR PRODUCING TILES |
| CN116396060A (en) * | 2022-12-30 | 2023-07-07 | 姚胜南 | Steel slag ceramic material and preparation method thereof |
-
1997
- 1997-03-21 JP JP06846897A patent/JP3719304B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002527334A (en) * | 1998-10-15 | 2002-08-27 | リー，キ−ガン | Ceramic composition using solid waste as raw material and method for producing the same |
| JP2020138888A (en) * | 2019-02-28 | 2020-09-03 | 日鉄日新製鋼株式会社 | Ceramics production method and ceramics |
| CN110002844A (en) * | 2019-04-12 | 2019-07-12 | 东南大学 | A kind of municipal sludge heat-preserving sintered brick and preparation method thereof |
| IT202100028286A1 (en) * | 2021-11-05 | 2023-05-05 | Lamberti Spa | PROCESS FOR PRODUCING TILES |
| WO2023078973A1 (en) | 2021-11-05 | 2023-05-11 | Lamberti Spa | Process for making tiles |
| CN116396060A (en) * | 2022-12-30 | 2023-07-07 | 姚胜南 | Steel slag ceramic material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3719304B2 (en) | 2005-11-24 |
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