JP2002173350A - Aggregate production process utilizing incineration ash and production equipment for the same process - Google Patents
Aggregate production process utilizing incineration ash and production equipment for the same processInfo
- Publication number
- JP2002173350A JP2002173350A JP2000373047A JP2000373047A JP2002173350A JP 2002173350 A JP2002173350 A JP 2002173350A JP 2000373047 A JP2000373047 A JP 2000373047A JP 2000373047 A JP2000373047 A JP 2000373047A JP 2002173350 A JP2002173350 A JP 2002173350A
- Authority
- JP
- Japan
- Prior art keywords
- aggregate
- calcium silicate
- incinerated ash
- ash
- cement
- 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
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/10—Burned or pyrolised refuse
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0231—Carbon dioxide hardening
-
- 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】本発明は焼却灰利用骨材の製
造方法及びその製造設備に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an aggregate utilizing incinerated ash and a production facility therefor.
【０００２】[0002]
【従来の技術】現在、火力発電所や、製鉄所をはじめと
して種々の産業において石炭の燃焼エネルギーが利用さ
れている。しかし、石炭は燃焼時に灰を発生し、その利
用手段が十分見出されていないことから有効に利用され
る用途が求められている。また、石炭以外でも可燃物の
焼却時に発生する焼却灰に関しては、同様の問題を抱え
ている。また、石炭のような化石エネルギーや可燃物の
燃焼により発生する二酸化炭素は地球温暖化の一因とな
るため、発生の抑制が求められている。2. Description of the Related Art At present, coal combustion energy is used in various industries such as thermal power plants and steel mills. However, coal generates ash at the time of combustion and its use has not been found sufficiently. In addition to coal, incineration ash generated when combustible materials are incinerated has a similar problem. Further, carbon dioxide generated by burning fossil energy or combustibles such as coal contributes to global warming, and therefore, suppression of the generation is required.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記問題点に
鑑みてなされたものであり、可燃物の燃焼時に発生する
焼却灰と二酸化炭素を利用して有効資源化することが可
能である、焼却灰利用骨材の製造方法、及びその製造設
備を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to use incinerated ash and carbon dioxide generated when combustible materials are burned to make it an effective resource. It is an object of the present invention to provide a method of manufacturing aggregate using incinerated ash and a manufacturing facility thereof.
【０００４】[0004]
【課題を解決するための手段】請求項１記載の本発明
は、可燃物を燃焼させて得られた焼却灰に対して、珪酸
カルシウム材料を混合する第一の工程、前記第一の工程
で得られた混合物に対して、水を添加して造粒する第二
の工程、前記第二の工程で得られた造粒物を、前記焼却
灰を生成する際に発生した二酸化炭素を利用することに
よって炭酸化処理する第三の工程からなる焼却灰利用骨
材の製造方法である。According to the first aspect of the present invention, there is provided a first step of mixing a calcium silicate material with incinerated ash obtained by burning a combustible material; For the obtained mixture, the second step of granulating by adding water, the granulated substance obtained in the second step, utilizing carbon dioxide generated when generating the incinerated ash This is a method for producing an aggregate utilizing incinerated ash, comprising a third step of carbonation.
【０００５】上記焼却灰は、可燃物を燃焼させた際に発
生する灰であり、細粒状であれば特に限定されず例え
ば、石炭を燃焼させた際に発生する石炭灰等が好ましく
挙げられる。The above-mentioned incinerated ash is ash generated when combustible materials are burned, and is not particularly limited as long as it is fine-grained. For example, coal ash generated when burning coal is preferably exemplified.
【０００６】上記珪酸カルシウム材料とは、カルシウム
とシリカが化合した材料であり、例えばセメント、ワラ
ストナイト等の天然鉱物；製鉄所で発生するスラグ等が
挙げられるが、セメントが安価で造粒が容易という点で
好ましい。The above-mentioned calcium silicate material is a material obtained by combining calcium and silica, and includes, for example, natural minerals such as cement and wollastonite; slag generated in steel works; It is preferable in that it is easy.
【０００７】上記セメントは、水和に伴い水酸化カルシ
ウムが生成するセメントであれば特に限定されず、例え
ば、普通ポルトランドセメント、特殊ポルトランドセメ
ント等を使用することが出来るが、炭酸化処理時の緻密
化効果が大きいという点でポルトランド系セメントが好
ましい。[0007] The above cement is not particularly limited as long as calcium hydroxide is generated with hydration. For example, ordinary portland cement, special portland cement and the like can be used. Portland cement is preferred in that it has a large effect on the formation.
【０００８】上記ポルトランド系セメントとは、一般に
エーライト（Ｃ３Ｓ：３ＣａＯ・ＳｉＯ2 ）或いはビー
ライト（Ｃ２Ｓ：２ＣａＯ・ＳｉＯ2 ）と呼ばれる未水
和珪酸カルシウム化合物を主成分とするセメントであ
り、普通ポルトランドセメント、早強ポルトランドセメ
ント、超早強ポルトランドセメント、中庸熱ポルトラン
ドセメント、低熱ポルトランドセメント、耐硫酸塩ポル
トランドセメント、各種低アルカリ型ポルトランドセメ
ント等のポルトランドセメント；高炉セメント、シリカ
セメント、フライアッシュセメント等の混合セメント；
白色セメント等が挙げられる。The Portland cement is a cement mainly composed of an unhydrated calcium silicate compound generally called alite (C3S: 3CaO.SiO 2 ) or belite (C2S: 2CaO.SiO 2 ). Portland cements such as ordinary Portland cement, early-strength Portland cement, ultra-high-strength Portland cement, moderate-heat Portland cement, low-heat Portland cement, sulfate-resistant Portland cement, various low-alkali-type Portland cements, etc .; blast furnace cement, silica cement, fly ash cement Mixed cement such as;
White cement and the like.
【０００９】上記焼却灰と珪酸カルシウム材料は、骨材
としての目的の物性を発現するために任意の配合として
良いが、好ましくは焼却灰１００重量部に対して、珪酸
カルシウム材料２０〜１０００重量部の範囲が好まし
い。珪酸カルシウム材料が２０重量部より少ないと、圧
縮強度等の物性が十分に発現されず、１０００重量部を
超えると有害物の抑制には問題はないものの、焼却灰の
有効利用という観点から有効性が少ないものとなる。よ
り好ましくは、焼却灰１００重量部に対して珪酸カルシ
ウム材料は５０〜３００重量部である。The incineration ash and the calcium silicate material may be arbitrarily mixed in order to exhibit the desired physical properties as an aggregate. Preferably, the calcium silicate material is 20 to 1000 parts by weight with respect to 100 parts by weight of the incineration ash. Is preferable. When the amount of the calcium silicate material is less than 20 parts by weight, physical properties such as compressive strength are not sufficiently exhibited, and when the amount exceeds 1000 parts by weight, there is no problem in controlling harmful substances, but the effectiveness from the viewpoint of effective utilization of incinerated ash. Will be less. More preferably, the calcium silicate material is 50 to 300 parts by weight based on 100 parts by weight of the incinerated ash.
【００１０】第二工程は、上記第一工程で得られた混合
物に対して、水を添加して造粒する工程である。この造
粒工程は、材料の分散が均一に行えることから、焼却灰
と珪酸カルシウム材料の混合を乾式で混合して均質化し
た後に水を添加して造粒することが好ましい。具体的な
造粒方法としては例えば、転動、押し出し、打錠、一軸
攪拌等が挙げられる。The second step is a step of adding water to the mixture obtained in the first step and granulating the mixture. In this granulation step, since the materials can be dispersed uniformly, it is preferable to granulate by adding water after mixing the incineration ash and the calcium silicate material by dry mixing and homogenizing. Specific granulation methods include, for example, tumbling, extrusion, tableting, uniaxial stirring, and the like.
【００１１】特に、珪酸カルシウム材料がセメントであ
る場合、上記水の添加量は焼却灰と珪酸カルシウム材料
の混合粉体１００重量部に対して、１０〜３００重量部
が好ましい。In particular, when the calcium silicate material is cement, the amount of the water is preferably 10 to 300 parts by weight based on 100 parts by weight of the mixed powder of the incinerated ash and the calcium silicate material.
【００１２】又、上記焼却灰、セメント、及び水の混合
物を造粒する場合、一般的な転動式の造粒方法でも良い
が、一軸式攪拌機（例：「ヘンシェルミキサー」三井鉱
山社製）で造粒することにより、物性の良好な骨材を得
ることが出来る。When the mixture of incinerated ash, cement and water is granulated, a general rolling granulation method may be used, but a single-shaft agitator (eg, "Henschel mixer" manufactured by Mitsui Mining Co., Ltd.) By agglomerating with, an aggregate having good physical properties can be obtained.
【００１３】第三工程は、上記焼却灰を生成する際に発
生した二酸化炭素を利用することによって、上記第二工
程で得られた造粒物を炭酸化処理する。上記二酸化炭素
は燃焼ガスをそのまま利用しても良いし、燃焼ガス中か
ら分離抽出して高濃度の二酸化炭素として利用しても良
い。In the third step, the granulated product obtained in the second step is subjected to a carbonation treatment by utilizing carbon dioxide generated when the incinerated ash is produced. The carbon dioxide may use the combustion gas as it is, or may be separated and extracted from the combustion gas and used as high-concentration carbon dioxide.
【００１４】上記炭酸化処理とは、上記珪酸カルシウム
材料のカルシウム成分の少なくとも一部が炭酸化された
状態にする処理を意味する。特に珪酸カルシウム材料が
セメントである場合、セメントの水和初期段階が好まし
く、具体的にはセメント中に含まれる珪酸カルシウム化
合物の水和率が３０％となるまでに、３０％以上の濃度
の二酸化炭素を用い、高温高圧条件下で作用させること
が好ましい。The above-mentioned carbonation treatment means a treatment for making at least a part of the calcium component of the above-mentioned calcium silicate material into a carbonated state. In particular, when the calcium silicate material is cement, the initial stage of hydration of the cement is preferable. Specifically, the concentration of the carbon dioxide is 30% or more until the hydration rate of the calcium silicate compound contained in the cement becomes 30%. It is preferable to use carbon under high temperature and high pressure conditions.
【００１５】上記珪酸カルシウム化合物の水和率とは、
セメント原料中に含まれる未水和珪酸カルシウム化合物
量をＡ、水和率測定時の残存未水和珪酸カルシウム化合
物量をＢとすると、〔（Ａ−Ｂ）／Ａ〕×１００で示さ
れる値をいう。セメント中の未水和珪酸カルシウム化合
物（エーライト及びビーライト）量の測定方法として
は、Ｘ線回折測定装置や核磁気共鳴装置（２９Ｓｉ−Ｎ
ＭＲ）を利用する公知の方法を用いることが出来る（Ｎ
ＭＲを利用した方法の参考文献：Ｇ．Ｐａｒｒｙ−Ｊｏ
ｎｅｓ，Ｃｅｍｅｎｔａｎｄ Ｃｏｎｃｒｅｔｅ Ｒｅ
ｓｅａｒｃｈ，Ｖｏｌ．１９，ｐ２２８−２３４，１９
８９参照）。The hydration rate of the calcium silicate compound is as follows:
Assuming that the amount of the unhydrated calcium silicate compound contained in the cement raw material is A and the amount of the remaining unhydrated calcium silicate compound at the time of measuring the hydration ratio is B, a value represented by [(AB) / A] × 100 Say. As a method for measuring the amount of unhydrated calcium silicate compound (alite and belite) in cement, an X-ray diffractometer or a nuclear magnetic resonance apparatus (29Si-N
A known method utilizing MR) can be used (N
References for methods utilizing MR: Parry-Jo
nes, Cementand Concrete Re
search, Vol. 19, p228-234,19
89).
【００１６】上記炭酸化処理温度としては、３０℃〜２
００℃であることが好ましく、より高温で反応させる方
が炭酸化反応が迅速に進行する。加温温度が３０℃より
低いと炭酸化反応が充分に起こるには大きな時間を要す
る。加温温度の上限としては特に限定されないが、２０
０℃より高いと炭酸化反応は迅速になるものの大きなエ
ネルギーが必要になる。また、炭酸化処理に必要な熱を
可燃物の焼却時に発生する熱から得ることによって、効
率的に炭酸化を進めることが可能である。The carbonation temperature is 30 ° C. to 2
The temperature is preferably 00 ° C., and the carbonation reaction proceeds more rapidly at a higher temperature. If the heating temperature is lower than 30 ° C., it takes a long time for the carbonation reaction to occur sufficiently. The upper limit of the heating temperature is not particularly limited.
If the temperature is higher than 0 ° C., the carbonation reaction becomes quick, but large energy is required. Further, by obtaining the heat required for the carbonation treatment from the heat generated during incineration of combustibles, it is possible to efficiently promote carbonation.
【００１７】上記炭酸化処理は、常圧条件下において炭
酸化しても良いが、１５ＭＰａまでの範囲内で加圧する
ことが緻密で高強度の骨材を得られるという点で好まし
い。上記加圧圧力は１５ＭＰａより高くしても炭酸化反
応の速度は大きくは変わらず、逆に、大きなエネルギー
が必要となるだけで、工業生産性や設備の大型化という
観点から不適当である。In the above carbonation treatment, carbonation may be carried out under normal pressure conditions, but it is preferable to pressurize it within a range of up to 15 MPa in that a dense and high-strength aggregate can be obtained. Even if the above-mentioned pressure is higher than 15 MPa, the rate of the carbonation reaction does not change much. Conversely, only a large amount of energy is required, which is unsuitable from the viewpoint of industrial productivity and enlargement of equipment.
【００１８】上記炭酸化処理の時間としては、炭酸化処
理条件、用いる珪酸カルシウム材料や造粒物の組成、粒
径にもよるが２４時間以内であることが好ましく、より
好ましくは５分〜２４時間の範囲内である。処理時間が
５分より短いと、炭酸化反応が充分に起こり難い。一
方、処理時間を２４時間より長くしても、それ以上炭酸
化反応は進まず、炭酸化効果はこれ以上向上し難いだけ
でなく、逆に消費エネルギー、設備の面からも工業的に
みて合理的ではない。The time for the carbonation treatment depends on the conditions of the carbonation treatment, the composition and the particle size of the calcium silicate material and granules to be used, but is preferably within 24 hours, more preferably 5 minutes to 24 hours. Within the time range. If the treatment time is shorter than 5 minutes, the carbonation reaction is unlikely to occur sufficiently. On the other hand, even if the treatment time is longer than 24 hours, the carbonation reaction does not proceed any more, and the carbonation effect is not easily improved anymore, and on the contrary, it is industrially reasonable in terms of energy consumption and equipment. Not a target.
【００１９】又、上記炭酸化処理の際、造粒物における
水／セメント比は骨材の添加量によって異なるが、０．
０７５〜０．５の範囲が好ましい。上記造粒物における
水／セメント比とは、造粒物に含有される水分の重量を
セメント成分の重量で割った値であり、水／セメント比
が０．０７５より低いと炭酸化反応の効率が低下する。
逆に水／セメント比が０．５より高いとセメント粒子間
に存在する余剰水が二酸化炭素の拡散を妨げ、水和反応
の初期段階における炭酸化反応が充分に起こらない。ポ
ルトランド系セメントを用いた場合、水／セメント比は
０．１〜０．４がより好ましい。In the above carbonation treatment, the water / cement ratio in the granulated product varies depending on the amount of the aggregate added.
The range of 075 to 0.5 is preferred. The water / cement ratio in the above granulated material is a value obtained by dividing the weight of water contained in the granulated material by the weight of the cement component. If the water / cement ratio is lower than 0.075, the efficiency of the carbonation reaction is increased. Decrease.
Conversely, if the water / cement ratio is higher than 0.5, excess water existing between the cement particles hinders the diffusion of carbon dioxide, and the carbonation reaction in the initial stage of the hydration reaction does not sufficiently occur. When Portland cement is used, the water / cement ratio is more preferably 0.1 to 0.4.
【００２０】請求項３記載の発明は、可燃物の燃焼装
置、前記燃焼装置から発生する焼却灰と珪酸カルシウム
材料を混合して造粒する混合造粒装置、及び上記燃焼装
置から排出される燃焼ガスを、焼却灰と珪酸カルシウム
からなる造粒物に作用させる炭酸化装置からなることを
特徴とする焼却灰利用骨材の製造装置である。According to a third aspect of the present invention, there is provided a combustion apparatus for combustibles, a mixed granulation apparatus for mixing and granulating incinerated ash generated from the combustion apparatus with a calcium silicate material, and combustion discharged from the combustion apparatus. An apparatus for producing aggregate using incinerated ash, characterized in that the apparatus comprises a carbonator for causing a gas to act on granules made of incinerated ash and calcium silicate.
【００２１】上記可燃物の燃焼装置は、可燃物を燃焼さ
せて熱、二酸化炭素、及び焼却灰を生成させる装置であ
る。又、上記混合造粒装置とは、焼却灰と珪酸カルシウ
ム材料を混合して造粒させる装置である。又、上記炭酸
化装置とは可燃物を燃焼させて生成した二酸化炭素を、
焼却灰と珪酸カルシウム材料よりなる造粒物に作用させ
ることが出来る装置である。又、上記炭酸化装置の前に
は、燃焼ガスから二酸化炭素を分離する二酸化炭素分離
装置を通した方が、炭酸化処理を効率的に行うという点
でより好ましい。The above combustible combustion apparatus is an apparatus for burning combustibles to generate heat, carbon dioxide and incinerated ash. Further, the above-mentioned mixed granulation apparatus is an apparatus for mixing and granulating incinerated ash and a calcium silicate material. In addition, the carbonation device and the carbon dioxide generated by burning combustibles,
This is a device that can act on granules composed of incinerated ash and calcium silicate material. Further, it is more preferable to pass a carbon dioxide separator for separating carbon dioxide from the combustion gas before the carbonator in terms of performing the carbonation treatment efficiently.
【００２２】（作 用）本発明の焼却灰利用骨材の製造
方法、及びその製造装置は、焼却灰の燃焼ガスが骨材の
炭酸化反応に利用されており、廃棄物の有効利用及び二
酸化炭素の固定化という観点で有用である。又、骨材は
珪酸カルシウム材料が炭酸化されることにより、物性の
優れた骨材を得ることが出来る。(Operation) In the method and apparatus for producing incinerated ash aggregate of the present invention, the combustion gas of incinerated ash is used for carbonation of aggregate, and the effective use of waste and It is useful from the viewpoint of immobilizing carbon. In addition, the aggregate can be obtained by carbonating a calcium silicate material, whereby an aggregate having excellent physical properties can be obtained.
【００２３】[0023]
【発明の実施の形態】（実施例１）石炭炊きのボイラー
より得られる石炭灰１００重量部に対して、普通ポルト
ランドセメント１００重量部を加え、ヘンシェルミキサ
ー（三井鉱山社製）で粉体の混合を行った。これに水３
０重量部を添加し、引き続きヘンシェルミキサーにて造
粒を行い、直径１０ｍｍ程度の球状造粒物を得た。得ら
れた造粒物をミキサーより取り出し、６時間室温中で養
生した後に炭酸化装置に入れて、常圧、温度８０℃の条
件で二酸化炭素濃度１５％の燃焼ガスを６時間作用させ
て焼却灰利用骨材とした。上記製造工程、及びその製造
装置の概念を図１に示す。(Example 1) 100 parts by weight of ordinary Portland cement is added to 100 parts by weight of coal ash obtained from a coal-fired boiler, and powder is mixed with a Henschel mixer (Mitsui Mining Co., Ltd.). Was done. And water 3
0 parts by weight were added, and granulation was subsequently performed with a Henschel mixer to obtain a spherical granulated product having a diameter of about 10 mm. The obtained granules are taken out of the mixer, aged for 6 hours at room temperature, put into a carbonation device, and incinerated by operating a combustion gas having a carbon dioxide concentration of 15% at normal pressure and a temperature of 80 ° C. for 6 hours. Ash aggregate was used. FIG. 1 shows the concept of the manufacturing process and the manufacturing apparatus.
【００２４】（比較例１）実施例１の造粒物を炭酸化処
理せずに一週間室温で養生し、骨材とした。(Comparative Example 1) The granulated product of Example 1 was cured at room temperature for one week without carbonation treatment to obtain an aggregate.
【００２５】（実施例２）石炭炊きのボイラーより得ら
れる石炭灰１００重量部に対して、ワラストナイト１０
０重量部、水４５重量部をミキサーにて混合し、打錠機
により造粒を行い、直径１０ｍｍ程度の円筒状造粒物を
得た。得られた造粒物を炭酸化装置に入れ、燃焼ガスか
ら分離した濃度９８％の二酸化炭素を１ＭＰａ、温度１
００℃の条件で２０分作用させて焼却灰利用骨材とし
た。上記製造工程、及びその製造装置の概念を図２に示
す。Example 2 Wollastonite 10 was added to 100 parts by weight of coal ash obtained from a coal-fired boiler.
0 parts by weight and 45 parts by weight of water were mixed by a mixer and granulated by a tableting machine to obtain a cylindrical granulated product having a diameter of about 10 mm. The obtained granules were put into a carbonator, and 98% of carbon dioxide separated from the combustion gas was subjected to 1 MPa at a temperature of 1 MPa.
It was made to act for 20 minutes at the condition of 00 ° C. to obtain an aggregate using incinerated ash. FIG. 2 shows the manufacturing process and the concept of the manufacturing apparatus.
【００２６】（比較例２）実施例２の造粒物を炭酸化処
理せずに一週間室温で養生したが、固化せず崩壊した。(Comparative Example 2) The granulated product of Example 2 was cured at room temperature for one week without carbonation, but collapsed without solidification.
【００２７】［骨材の圧縮強度試験］実施例及び比較例
で得られた骨材を使用し、５ｍｍ／ｍｉｎの試験速度で
骨材の圧縮破壊時の最大強度を測定した。実施例１及び
比較例１の骨材強度は最大荷重を骨材の断面積で除する
ことによって算出した。骨材の比重、吸水率と併せて結
果を表１に示す。[Aggregate Compressive Strength Test] Using the aggregates obtained in Examples and Comparative Examples, the maximum strength of the aggregate at the time of compressive fracture was measured at a test speed of 5 mm / min. The aggregate strength in Example 1 and Comparative Example 1 was calculated by dividing the maximum load by the cross-sectional area of the aggregate. Table 1 shows the results together with the specific gravity and the water absorption of the aggregate.
【００２８】[0028]
【表１】 [Table 1]
【００２９】表１から判る通り、実施例１で製造した焼
却灰利用骨材は、比較例１の骨材と較べて機械強度、緻
密性（吸水率）に優れており、実施例２の骨材と共に、
コンクリート用の骨材として好適な結果になっている。As can be seen from Table 1, the aggregate using incinerated ash produced in Example 1 is superior in mechanical strength and denseness (water absorption) as compared with the aggregate of Comparative Example 1, and the aggregate of Example 2 Along with the materials,
The result is favorable as an aggregate for concrete.
【００３０】[0030]
【発明の効果】本発明の焼却灰利用骨材の製造方法は、
焼却灰の燃焼ガスが骨材の炭酸化反応に利用されてお
り、コンクリート用部材として好適な物性の骨材が得ら
れる上、廃棄物の有効利用及び二酸化炭素の固定化とい
う観点で有用である。また、本発明の製造装置は、焼却
灰が発生する焼却装置から焼却灰、反応熱、及び二酸化
炭素を得、それらを利用して効率的に焼却灰を利用した
高性能な人工骨材を製造可能することが可能である。The method of the present invention for producing incinerated ash-based aggregates comprises:
The combustion gas of the incinerated ash is used for the carbonation reaction of the aggregate, so that the aggregate having suitable physical properties as a concrete member can be obtained, and it is useful from the viewpoint of effective use of waste and immobilization of carbon dioxide. . In addition, the manufacturing apparatus of the present invention obtains incinerated ash, heat of reaction, and carbon dioxide from an incinerator that generates incinerated ash, and uses them to efficiently manufacture high-performance artificial aggregates using the incinerated ash. It is possible to do it.
【図１】実施例１における焼却灰利用骨材の製造工程、
及びその製造装置の概念図である。FIG. 1 is a production process of incinerated ash-based aggregate in Example 1,
And a conceptual diagram of the manufacturing apparatus.
【図２】実施例２における焼却灰利用骨材の製造工程、
及びその製造装置の概念図である。FIG. 2 shows a manufacturing process of incinerated ash-based aggregate in Example 2.
And a conceptual diagram of the manufacturing apparatus.
Claims (3)
て、珪酸カルシウム材料を混合する 第一の工程、前記第一の工程で得られた混合物に対し
て、水を添加して造粒する 第二の工程、前記第二の工程で得られた造粒物を、前記
焼却灰を生成する際に発生した二酸化炭素を利用するこ
とによって炭酸化処理する第三の工程からなる、焼却灰
利用骨材の製造方法。1. A first step of mixing a calcium silicate material with incinerated ash obtained by burning combustibles, and adding water to the mixture obtained in the first step. Granulating the second step, the granulated material obtained in the second step, the carbonation generated by utilizing the carbon dioxide generated when generating the incinerated ash, comprising a third step, Manufacturing method of aggregate using incinerated ash.
る請求項１記載の焼却灰利用骨材の製造方法。2. The method according to claim 1, wherein the calcium silicate material is cement.
する焼却灰と珪酸カルシウム材料を混合して造粒する混
合造粒装置、及び上記燃焼装置から排出される燃焼ガス
を、焼却灰と珪酸カルシウムからなる造粒物に作用させ
る炭酸化装置からなることを特徴とする焼却灰利用骨材
の製造装置。3. A combustion device for combustibles, a mixing granulator for mixing and granulating incineration ash generated from the combustion device and a calcium silicate material, and a combustion gas discharged from the combustion device is converted into incineration ash. An apparatus for manufacturing an aggregate using incinerated ash, characterized by comprising a carbonation apparatus for acting on granules made of calcium silicate.
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|---|---|---|---|
| JP2000373047A JP2002173350A (en) | 2000-12-07 | 2000-12-07 | Aggregate production process utilizing incineration ash and production equipment for the same process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000373047A JP2002173350A (en) | 2000-12-07 | 2000-12-07 | Aggregate production process utilizing incineration ash and production equipment for the same process |
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|---|---|
| JP2002173350A true JP2002173350A (en) | 2002-06-21 |
Family
ID=18842495
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006263651A (en) * | 2005-03-25 | 2006-10-05 | Osaka Gas Co Ltd | Carbonated carbide, production method therefor, method for collecting zinc from fly ash from incinerator, and method for treating acidic gas in exhaust gas in incinerator |
| CN102060485A (en) * | 2010-12-02 | 2011-05-18 | 济南大学 | Cement concrete, and preparation method and recycling method thereof |
| JP2014162716A (en) * | 2013-02-28 | 2014-09-08 | Denki Kagaku Kogyo Kk | Concrete composition and method for producing the same |
| JP2016042076A (en) * | 2015-07-24 | 2016-03-31 | 株式会社神鋼環境ソリューション | Method and system for removing radioactive substances |
| CN108218272A (en) * | 2016-12-22 | 2018-06-29 | 纳米及先进材料研发院有限公司 | Derived from the environmentally friendly artificial aggregate of waste（Aggregate） |
-
2000
- 2000-12-07 JP JP2000373047A patent/JP2002173350A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006263651A (en) * | 2005-03-25 | 2006-10-05 | Osaka Gas Co Ltd | Carbonated carbide, production method therefor, method for collecting zinc from fly ash from incinerator, and method for treating acidic gas in exhaust gas in incinerator |
| JP4731190B2 (en) * | 2005-03-25 | 2011-07-20 | 大阪瓦斯株式会社 | Method for recovering zinc from incinerator fly ash |
| CN102060485A (en) * | 2010-12-02 | 2011-05-18 | 济南大学 | Cement concrete, and preparation method and recycling method thereof |
| JP2014162716A (en) * | 2013-02-28 | 2014-09-08 | Denki Kagaku Kogyo Kk | Concrete composition and method for producing the same |
| JP2016042076A (en) * | 2015-07-24 | 2016-03-31 | 株式会社神鋼環境ソリューション | Method and system for removing radioactive substances |
| CN108218272A (en) * | 2016-12-22 | 2018-06-29 | 纳米及先进材料研发院有限公司 | Derived from the environmentally friendly artificial aggregate of waste（Aggregate） |
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