JPH08108162A - Granular material produced from waste and waste treatment method - Google Patents
Granular material produced from waste and waste treatment methodInfo
- Publication number
- JPH08108162A JPH08108162A JP24519294A JP24519294A JPH08108162A JP H08108162 A JPH08108162 A JP H08108162A JP 24519294 A JP24519294 A JP 24519294A JP 24519294 A JP24519294 A JP 24519294A JP H08108162 A JPH08108162 A JP H08108162A
- Authority
- JP
- Japan
- Prior art keywords
- waste
- limestone
- municipal waste
- slurry
- municipal
- 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
- 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
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は廃棄物より製造した粒状
物及び廃棄物処理方法に係り、特に、都市ゴミや水処理
汚泥を処理してコンクリート骨材、路盤材、埋め戻し材
等としての有効利用を図る、廃棄物より製造した粒状物
及び廃棄物処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granular material produced from waste and a method for treating the waste, and more particularly, as a concrete aggregate, a roadbed material, a backfill material, etc. by treating municipal waste and water treatment sludge. The present invention relates to a granular material produced from waste and a waste treatment method for effective utilization.
【０００２】[0002]
【従来の技術及び先行技術】都市ゴミは焼却処理後、或
いは焼却処理されることなくそのまま埋め立て処分され
ている。近年、都市ゴミの発生量は増々増加する傾向に
あり、焼却コストの高騰、埋立地の不足が問題視されて
いる。2. Description of the Related Art Municipal solid waste is either disposed of in landfill after incineration or without being incinerated. In recent years, the amount of municipal waste generated has been increasing, and soaring incineration costs and shortage of landfills have become a problem.
【０００３】一方、下水処理汚泥や上水処理汚泥等の水
処理汚泥は、各水処理場から大量に排出される。これら
水処理汚泥は、脱水後焼却され、或いは焼却処理される
ことなく埋め立て処分されており、その発生量が莫大な
量であることから、埋立地の不足が問題となっている。On the other hand, a large amount of water treatment sludge such as sewage treatment sludge and tap water treatment sludge is discharged from each water treatment plant. These water-treated sludges are dehydrated and then incinerated, or they are disposed of in landfill without being incinerated, and the amount of the generated sludge is enormous. Therefore, the shortage of landfill is a problem.
【０００４】そこで、最近になって、都市ゴミや水処理
汚泥の有効再利用を図るための研究開発がなされるよう
になり、特に下水汚泥焼却灰については、これを成形、
焼成して軽量骨材等を製造する方法が提案されている
（特公昭６１−１４０９９号、同６１−１４１００
号）。Therefore, recently, research and development have been carried out for the effective reuse of municipal waste and water-treated sludge. Particularly, for sewage sludge incineration ash, this is molded,
A method of producing a lightweight aggregate by firing has been proposed (Japanese Patent Publication Nos. 61-14099 and 61-14100).
issue).
【０００５】しかしながら、上記従来の方法では、下水
汚泥を脱水、焼成して焼却灰とする必要があり、下水汚
泥をそのまま用いることはできない。However, in the above conventional method, it is necessary to dehydrate and sinter the sewage sludge to produce incinerated ash, and the sewage sludge cannot be used as it is.
【０００６】一方、都市ゴミについては、一部肥料化な
どが提案されているが、大量の都市ゴミを有効再利用す
るための実用的な方法が提案されていないのが現状であ
る。都市ゴミや水処理汚泥を容易かつ効率的に処理して
コンクリート骨材、路盤材、埋め戻し材等として有効再
利用する技術として、本出願人は、先に、都市ゴミ及び
／又は水処理汚泥と石灰石とを混合粉砕した後、回転式
焼成炉にて焼成して粒状物とする方法を提案した（特願
平６−１１５１２５号、以下「先願」という。）。[0006] On the other hand, with respect to municipal waste, some proposals such as fertilization have been proposed, but at present, no practical method has been proposed for effectively reusing a large amount of municipal waste. As a technology for easily and efficiently treating municipal waste and water treatment sludge and effectively reusing it as concrete aggregate, roadbed material, backfill material, etc., the present applicant has previously proposed that the municipal waste and / or water treatment sludge be reused. And a limestone were mixed and pulverized, and then the mixture was calcinated in a rotary calcination furnace to form a granular material (Japanese Patent Application No. 6-115125, hereinafter referred to as "prior application").
【０００７】上記先願の方法によれば、廃棄物から十分
な強度を有する粒状物を容易に製造することができ、こ
れを骨材や路盤材等として有効再利用することができ
る。According to the method of the above-mentioned prior application, it is possible to easily produce a granular material having sufficient strength from a waste material, and it can be effectively reused as an aggregate or a roadbed material.
【０００８】[0008]
【発明が解決しようとする課題】ところで、このように
して得られる粒状物については、その骨材や路盤材等と
しての用途の面から、より一層高強度であることが常に
要求されている。By the way, the granular material thus obtained is always required to have higher strength in terms of its use as an aggregate or a roadbed material.
【０００９】一方、一般に、焼結体の強度を向上させる
ためには、焼結助剤等の微量成分を添加して焼結性を高
める方法があるが、上記先願の方法は、都市ゴミや石灰
石を乾式にて混合粉砕するものであるため、この乾式処
理時にある種の成分を微量添加しても、混合状態が良く
ない。このため、添加効果が充分に発揮されないという
問題があった。また、乾式処理のため、処理時の発塵の
問題があり、作業環境が不良となるという不具合もあっ
た。On the other hand, in general, in order to improve the strength of the sintered body, there is a method of adding a trace amount of components such as a sintering aid to enhance the sinterability. Since limestone and limestone are mixed and pulverized by a dry method, even if a small amount of a certain component is added during the dry processing, the mixed state is not good. Therefore, there is a problem that the effect of addition is not sufficiently exhibited. Further, since it is a dry process, there is a problem that dust is generated during the process and the working environment becomes poor.
【００１０】本発明は上記先願の問題点を解決し、製造
時の発塵を防止して、都市ゴミや水処理汚泥から、より
高強度で、骨材や路盤材等としての用途に好適な粒状物
を製造する技術を提供することを目的とする。The present invention solves the problems of the above-mentioned prior application, prevents dust generation during manufacturing, has higher strength from municipal waste and water treatment sludge, and is suitable for use as aggregate or roadbed material. It is an object of the present invention to provide a technique for producing a fine granular material.
【００１１】[0011]
【課題を解決するための手段】請求項１の廃棄物より製
造した粒状物は、都市ゴミ及び／又は都市ゴミ焼却灰に
水を添加して得られる都市ゴミスラリーと、水処理汚泥
との少なくとも一方と、石灰石に水を添加して得られる
石灰石スラリーと、焼結助剤とを湿式粉砕混合した後、
回転式焼成炉にて焼成して得られる粒状物よりなる廃棄
物より製造したことを特徴とする。The particulate matter produced from the waste according to claim 1 is at least a municipal waste slurry obtained by adding water to municipal waste and / or incinerated urban ash, and a water treatment sludge. On the other hand, after wet-milling and mixing limestone slurry obtained by adding water to limestone and a sintering aid,
It is characterized in that it is manufactured from a waste material consisting of granular materials obtained by baking in a rotary baking furnace.
【００１２】請求項２の廃棄物より製造した粒状物は、
請求項１の粒状物において、焼結助剤がホウ酸、酸化リ
チウム、フッ化カルシウム及びガラスカレット粉砕物よ
りなる群から選ばれる１種又は２種以上であることを特
徴とする。The granular material produced from the waste of claim 2 is
The granular material according to claim 1, wherein the sintering aid is one or more selected from the group consisting of boric acid, lithium oxide, calcium fluoride and crushed glass cullet.
【００１３】請求項３の廃棄物より製造した粒状物は、
請求項１又は２の粒状物において、焼結助剤の添加量
が、都市ゴミスラリー及び／又は水処理汚泥と、石灰石
スラリーとの合計に対して乾物割合で０．０５〜５．０
重量％であることを特徴とする。The granular material produced from the waste of claim 3 is
The granular material according to claim 1 or 2, wherein the amount of the sintering aid added is 0.05 to 5.0 in terms of dry matter with respect to the total of the municipal waste slurry and / or the water treatment sludge and the limestone slurry.
It is characterized in that it is wt%.
【００１４】請求項４の廃棄物処理方法は、都市ゴミ及
び／又は都市ゴミ焼却灰に水を添加して得られる都市ゴ
ミスラリーと、水処理汚泥との少なくとも一方と、石灰
石に水を添加して得られる石灰石スラリーと、焼結助剤
とを湿式粉砕混合した後、回転式焼成炉にて焼成して粒
状物とすることを特徴とする。According to a fourth aspect of the waste treatment method of the present invention, at least one of municipal waste slurry obtained by adding water to municipal waste and / or municipal waste incineration ash and water treatment sludge, and water added to limestone. The limestone slurry thus obtained and the sintering aid are wet-pulverized and mixed, and then fired in a rotary firing furnace to obtain a granular material.
【００１５】請求項５の廃棄物処理方法は、請求項４の
方法において、焼結助剤がホウ酸、酸化リチウム、フッ
化カルシウム及びガラスカレット粉砕物よりなる群から
選ばれる１種又は２種以上であることを特徴とする。The waste treatment method of claim 5 is the method of claim 4, wherein the sintering aid is one or two selected from the group consisting of boric acid, lithium oxide, calcium fluoride and crushed glass cullet. The above is characterized.
【００１６】請求項６の廃棄物処理方法は、請求項４又
は５の方法において、焼結助剤の添加量が、都市ゴミス
ラリー及び／又は水処理汚泥と、石灰石スラリーとの合
計に対して乾物割合で０．０５〜５．０重量％であるこ
とを特徴とする。The waste treatment method according to claim 6 is the method according to claim 4 or 5, wherein the amount of the sintering aid added is based on the total amount of the municipal waste slurry and / or water treatment sludge and the limestone slurry. The dry matter ratio is 0.05 to 5.0% by weight.
【００１７】以下に本発明を詳細に説明する。The present invention will be described in detail below.
【００１８】本発明においては、まず、石灰石に水を添
加して石灰石スラリーとする。また、都市ゴミ及び／又
は都市ゴミ焼却灰を用いる場合には、これに水を添加し
て都市ゴミスラリーとする。In the present invention, first, water is added to limestone to prepare a limestone slurry. When using municipal waste and / or municipal waste incineration ash, water is added to this to obtain municipal waste slurry.
【００１９】石灰石スラリーは、６０〜７０重量％程度
の濃度であることが好ましく、これよりも石灰石が多い
と十分な均一混合効果が得られず、逆に水が多いと焼成
コストが高くつき不経済である。It is preferable that the limestone slurry has a concentration of about 60 to 70% by weight. If the amount of limestone is larger than this, a sufficient uniform mixing effect cannot be obtained. It is an economy.
【００２０】都市ゴミスラリーについても同様な理由か
ら、都市ゴミ及び／又は都市ゴミ焼却灰濃度が６０〜７
０重量％のものが好ましい。For the same reason, the concentration of municipal waste and / or incinerated ash of municipal waste is 60 to 7 for the municipal waste slurry.
It is preferably 0% by weight.
【００２１】なお、本発明において、都市ゴミとは、台
所ゴミ、紙ゴミ、木片、布、その他の可燃ゴミである
が、プラスチック、発泡スチロール、金属等の不燃ゴミ
が若干含まれていても支障はない。都市ゴミ焼却灰は、
このような都市ゴミを７００〜９００℃で０．５〜１．
０時間程度焼成して得られるものである。[0021] In the present invention, the municipal waste refers to kitchen waste, paper waste, wood chips, cloth, and other combustible waste. However, even if a small amount of non-combustible waste such as plastic, styrofoam, and metal is contained, no problem occurs. Absent. Urban refuse incineration ash
Such municipal waste is stored at 700 to 900 ° C. for 0.5 to 1.
It is obtained by firing for about 0 hours.
【００２２】一方、水処理汚泥とは、下水処理場、上水
処理場等の水処理場から排出される下水処理汚泥、上水
処理汚泥等の水処理汚泥である。On the other hand, the water treatment sludge is a water treatment sludge such as a sewage treatment sludge or a water treatment sludge discharged from a water treatment plant such as a sewage treatment plant or a water treatment plant.
【００２３】本発明においては、このような都市ゴミス
ラリー及び／又は水処理汚泥と、石灰石スラリーと、焼
結助剤とを湿式ミル等で湿式粉砕混合する。In the present invention, such municipal waste slurry and / or water treatment sludge, limestone slurry, and sintering aid are wet pulverized and mixed by a wet mill or the like.
【００２４】ここで、都市ゴミスラリー及び／又は水処
理汚泥と、石灰石スラリーとの混合割合は、各々の乾燥
重量比で都市ゴミ（及び／又は都市ゴミ焼却灰）及び／
又は水処理汚泥に対して石灰石が等量以上、好ましくは
１〜２０倍となるようにするのが望ましい。石灰石の割
合が都市ゴミ（及び／又は都市ゴミ焼却灰）及び／又は
水処理汚泥の乾燥重量の等量未満であると後工程の焼成
により生成するクリンカー鉱物の生成量が少なくなり、
得られる粒状物が脆くなって、コンクリート骨材、路盤
材、埋め戻し材等の用途に適さなくなる。石灰石の混合
割合が多過ぎても添加による効果に大差はなく、都市ゴ
ミや水処理汚泥の処理量当りの石灰石使用量が増え、処
理コストが高くつき好ましくない。Here, the mixing ratio of the municipal waste slurry and / or the water treatment sludge and the limestone slurry is municipal waste (and / or municipal refuse incinerated ash) and / or dry weight ratio.
Alternatively, it is desirable that the amount of limestone is equal to or more than that of the water-treated sludge, preferably 1 to 20 times. If the proportion of limestone is less than the equivalent amount of the dry weight of municipal waste (and / or municipal waste incinerated ash) and / or water-treated sludge, the amount of clinker mineral produced by firing in the subsequent step is reduced,
The obtained granular material becomes brittle and is not suitable for applications such as concrete aggregate, roadbed material and backfill material. Even if the mixing ratio of limestone is too large, the effect of the addition is not so different, the amount of limestone used per amount of treated municipal waste or water-treated sludge increases, and the treatment cost becomes high, which is not preferable.
【００２５】一方、焼結助剤としては、融点降下作用の
あるホウ酸、ＣａＦ2 （フッ化カルシウム）、酸化リチ
ウム、ガラスカレット粉砕物の１種又は２種以上を用い
ることができ、その添加量は都市ゴミスラリー及び／又
は水処理汚泥と石灰石スラリーとの合計に対して乾物割
合で０．０５〜５．０重量％とするのが好ましい。この
割合が０．０５重量％未満では十分な焼結作用が得られ
ず、得られる粒状物の強度が不足し、５．０重量％を超
えても効果に大差はなく、徒に焼結助剤コストが高騰し
て好ましくない。On the other hand, as the sintering aid, one or more of boric acid, CaF 2 (calcium fluoride), lithium oxide and crushed glass cullet having a melting point lowering action can be used, and the addition thereof. The amount is preferably 0.05 to 5.0% by weight in terms of dry matter with respect to the total of the municipal waste slurry and / or water treatment sludge and the limestone slurry. If this ratio is less than 0.05% by weight, a sufficient sintering action cannot be obtained, the strength of the obtained granules is insufficient, and even if it exceeds 5.0% by weight, there is no great difference in the effect, and there is no sintering aid. The cost of the agent rises undesirably.
【００２６】なお、本発明において、上記湿式混合粉砕
の程度に特に制限はないが、通常の場合、都市ゴミスラ
リー及び／又は水処理汚泥と、石灰石スラリーと、焼結
助剤とを湿式ミルに投入して５〜３０分程度処理し、ス
ラリー中の分散粒子の粒径が２０〜１００μｍ程度とな
るようにするのが好ましい。In the present invention, the degree of wet mixing and pulverization is not particularly limited, but in the usual case, municipal waste slurry and / or water treatment sludge, limestone slurry, and sintering aid are put into a wet mill. It is preferable that the particles are charged and treated for about 5 to 30 minutes so that the particle diameter of the dispersed particles in the slurry becomes about 20 to 100 μm.
【００２７】このような湿式粉砕混合により得られた粉
砕混合物は、次いで、回転型造粒焼成炉等の回転式焼成
炉（ロータリーキルン）に投入して１４００〜１５００
℃で焼成する。The pulverized mixture obtained by such wet pulverization and mixing is then put into a rotary calcination furnace (rotary kiln) such as a rotary granulation calcination furnace or the like and 1400 to 1500.
Bake at ° C.
【００２８】この焼成温度が１４００℃未満では十分に
焼き締った粒状物を得ることができず、コンクリート骨
材、路盤材、埋め戻し材等としての用途に適さなくな
る。また、焼成温度が１５００℃を超えても焼き締り状
態に大差はなく、焼成コストが高くつくことから、焼成
温度は１４００〜１５００℃とする。If the firing temperature is less than 1400 ° C., it is not possible to obtain a sufficiently hardened granular material, which makes it unsuitable for use as a concrete aggregate, a roadbed material, a backfill material and the like. Further, even if the firing temperature exceeds 1500 ° C., there is no great difference in the tightly closed state, and the firing cost is high, so the firing temperature is set to 1400 to 1500 ° C.
【００２９】なお、特に十分に焼き締った粒状物を得る
ためには、焼成温度は１４５０℃以上とするのが好まし
い。The firing temperature is preferably 1450 ° C. or higher in order to obtain a sufficiently hardened granular material.
【００３０】得られた粒状物は、通常の場合、粒径０．
５〜４０ｍｍの範囲で、平均粒径は２５ｍｍのものであ
り、これをそのままコンクリート骨材、路盤材、埋め戻
し材等として用いることができる。The obtained granules usually have a particle size of 0.
In the range of 5 to 40 mm, the average particle diameter is 25 mm, which can be used as it is as a concrete aggregate, a roadbed material, a backfill material, or the like.
【００３１】本発明により得られる粒状物は、粘土系物
質である都市ゴミ（或いは都市ゴミ焼却灰）及び／又は
水処理汚泥と石灰石との焼成物であるため、組成的には
セメント類似物質であり、従って湿潤すると固化する性
状を有し、コンクリート骨材、路盤材、埋め戻し材等と
して極めて有効に使用することができる。即ち、例え
ば、この粒状物を路面等に敷設し、その後水を散布する
と粒状物同志が接合して固化し、歩行又は走行に十分な
強度を有する路面又は下地面を形成することができる。The granular material obtained by the present invention is a cement-like substance in terms of composition because it is a clay-based substance, municipal waste (or municipal waste incineration ash) and / or a calcined product of water treatment sludge and limestone. Therefore, it has a property of solidifying when wet, and can be extremely effectively used as a concrete aggregate, a roadbed material, a backfill material, or the like. That is, for example, when this granular material is laid on a road surface or the like, and then water is sprinkled, the granular materials are joined and solidified to form a road surface or a ground surface having sufficient strength for walking or running.
【００３２】ところで、都市ゴミ及び／又は水処理汚泥
には、一般に揮発性のＰｂ，Ｚｎ，Ｃｄ等の金属化合物
が含有されている。By the way, municipal waste and / or water treatment sludge generally contains volatile metal compounds such as Pb, Zn and Cd.
【００３３】本発明においては、焼成に当り、プレヒー
タ付ロータリーキルンを用い、これらの揮発性金属化合
物をプレヒータで抽気し、その後温度制御のもとに冷却
して各揮発性金属化合物を濃縮、回収することもでき
る。In the present invention, during firing, a rotary kiln with a preheater is used, and these volatile metal compounds are extracted by the preheater and then cooled under temperature control to concentrate and recover each volatile metal compound. You can also
【００３４】[0034]
【作用】都市ゴミ及び水処理汚泥は粘土系物質であるた
め、これに石灰石を混合して焼成することにより、セメ
ントと同様にクリンカー鉱物が生成してクリンカー状の
粒状物が得られる。Since municipal waste and water-treated sludge are clay-based substances, clinker minerals are produced in the same manner as cement and clinker-like particles are obtained by mixing limestone with this and firing it.
【００３５】得られた粒状物は十分な強度を有し、ま
た、有害物質の溶出の問題もなく、コンクリート骨材、
路盤材、埋め戻し材等として有効に利用できる。特に、
この粒状物は、湿潤すると固化する性状を有し、路面施
工等に極めて有用である。The obtained granules have sufficient strength, and there is no problem of elution of harmful substances.
It can be effectively used as a roadbed material and backfill material. In particular,
This granular material has the property of solidifying when wet, and is extremely useful for road surface construction and the like.
【００３６】本発明においては、このような粒状物の製
造に当り、都市ゴミ及び／又は都市ゴミ焼却灰と、石灰
石と水処理汚泥と、焼結助剤とを湿式混合するため、発
塵の問題が解消すると共に、焼結助剤を均一に混合する
ことができる。なお、水処理汚泥については、本来、ス
ラリー状であるため、そのまま用いることができる。こ
のため、焼結助剤の効果が充分に発揮され、より一層高
強度で、各種用途において、優れた性能を示す粒状物を
得ることができる。In the present invention, when such a granular material is produced, since municipal waste and / or municipal waste incinerated ash, limestone, water treatment sludge and a sintering aid are wet-mixed, no dust is generated. The problem is solved and the sintering aid can be mixed uniformly. Since the water-treated sludge is originally in the form of slurry, it can be used as it is. Therefore, the effect of the sintering aid is sufficiently exhibited, and it is possible to obtain a granular material having higher strength and excellent performance in various applications.
【００３７】本発明において、焼結助剤としてはホウ
酸、酸化リチウム、フッ化カルシウム及びガラスカレッ
ト粉砕物よりなる群から選ばれる１種又は２種以上が好
ましく、また、その添加量は、都市ゴミスラリー及び／
又は水処理汚泥と石灰石スラリーとの合計に対して乾物
割合で０．０５〜５．０重量％であることが好ましい。In the present invention, the sintering aid is preferably one or more selected from the group consisting of boric acid, lithium oxide, calcium fluoride and crushed glass cullet, and the addition amount thereof is urban. Waste slurry and /
Alternatively, the dry matter ratio is preferably 0.05 to 5.0% by weight with respect to the total of the water-treated sludge and the limestone slurry.
【００３８】[0038]
【実施例】以下に実施例及び比較例を挙げて本発明をよ
り具体的に説明する。EXAMPLES The present invention will be described more specifically with reference to Examples and Comparative Examples below.
【００３９】なお、実施例において用いた都市ゴミは、
一般の可燃都市ゴミであり、都市ゴミ焼却灰は、このよ
うな都市ゴミを８００℃程度で３０分間焼成して得られ
たものである。水処理汚泥は通常の下水処理汚泥であ
る。The municipal waste used in the examples is
It is a general combustible municipal waste, and the municipal waste incineration ash is obtained by firing such municipal waste at about 800 ° C. for 30 minutes. Water treatment sludge is normal sewage treatment sludge.
【００４０】また、都市ゴミスラリー及び／又は水処理
汚泥と石灰石スラリーの配合割合は、各々、都市ゴミ、
都市ゴミ焼却灰、水処理汚泥、石灰石の乾燥重量割合で
示す。従って、都市ゴミ及び水処理汚泥については、こ
れを１００℃で３０分間乾燥した後の重量で示す。The mixing ratio of municipal waste slurry and / or water treatment sludge and limestone slurry is respectively municipal waste,
It is shown as the dry weight ratio of municipal waste incineration ash, water treatment sludge, and limestone. Therefore, the weight of municipal solid waste and water-treated sludge after being dried at 100 ° C. for 30 minutes is shown.
【００４１】実施例１〜７ 都市ゴミ及び／又は都市ゴミ焼却灰に水を添加して表１
に示す濃度の都市ゴミスラリーとした。別に石灰石（粒
径３０〜５０ｍｍ）に水を添加して表１に示す濃度の石
灰石スラリーとした。この石灰石スラリーと、都市ゴミ
スラリー及び／又は水処理汚泥と、焼結助剤としてホウ
酸を表１に示す配合で、湿式ミルに投入して３０分湿式
粉砕混合した。これにより、スラリー中の石灰石や都市
ゴミ等は、粒径４０〜７０μｍ程度に粉砕された。な
お、ホウ酸の添加量は石灰石スラリーと、都市ゴミスラ
リー及び／又は水処理汚泥との合計に対して乾物割合で
０．１重量％とした。Examples 1 to 7 Water was added to municipal waste and / or municipal waste incineration ash.
A municipal solid waste slurry having the concentration shown in was prepared. Separately, water was added to limestone (particle size 30 to 50 mm) to obtain a limestone slurry having the concentration shown in Table 1. The limestone slurry, the municipal waste slurry and / or the water-treated sludge, and boric acid as a sintering aid having the composition shown in Table 1 were put into a wet mill and wet-milled and mixed for 30 minutes. As a result, limestone, municipal waste, etc. in the slurry were crushed to a particle size of about 40 to 70 μm. The amount of boric acid added was 0.1% by weight in terms of dry matter with respect to the total of the limestone slurry and the municipal waste slurry and / or the water-treated sludge.
【００４２】得られた混合物をロータリーキルンに投入
して表１に示す温度で表１に示す時間焼成して、表１に
示す平均粒径の粒状物を得た。The obtained mixture was put into a rotary kiln and fired at the temperature shown in Table 1 for the time shown in Table 1 to obtain granules having the average particle size shown in Table 1.
【００４３】得られた各粒状物について、舗装要綱で規
定された方法により一軸圧縮強度及び修正ＣＢＲを測定
し、結果を表１に示した。The uniaxial compressive strength and the modified CBR of each of the obtained granules were measured by the method specified in the paving outline, and the results are shown in Table 1.
【００４４】比較例１ 焼結助剤を添加しなかったこと以外は実施例６と同様に
して粒状物を得、同様に舗装要綱で規定された方法によ
り一軸圧縮強度及び修正ＣＢＲを測定し、結果を表１に
示した。Comparative Example 1 A granular material was obtained in the same manner as in Example 6 except that the sintering additive was not added, and the uniaxial compressive strength and the modified CBR were measured by the same method as specified in the paving outline. The results are shown in Table 1.
【００４５】比較例２ 都市ゴミを１００℃で３０分間各々乾燥し、これに石灰
石と焼結助剤とを添加して実施例６における都市ゴミ、
石灰石及び焼結助剤配合と同配合となるようにして乾式
粉砕混合し、混合物を表１に示す条件で焼成した。得ら
れた粒状物について、舗装要綱で規定された方法により
一軸圧縮強度及び修正ＣＢＲを測定し、結果を表１に示
した。Comparative Example 2 Municipal waste was dried at 100 ° C. for 30 minutes each, and limestone and a sintering aid were added thereto to obtain the municipal waste in Example 6,
Dry pulverization and mixing were performed so as to have the same composition as that of the limestone and the sintering aid, and the mixture was fired under the conditions shown in Table 1. The uniaxial compressive strength and the modified CBR of the obtained granules were measured by the method specified in the paving outline, and the results are shown in Table 1.
【００４６】また、得られた粒状物のうち粒径５ｍｍ以
下を細骨材、粒径５ｍｍ以上を粗骨材とした下記配合の
コンクリート供試体について、下記方法により圧潰強度
を測定すると共に溶出試験を行い、結果を表１に示し
た。Further, among the obtained granular materials, the crush strength was measured by the following method and the elution test was performed on the concrete specimens of the following composition in which the particle size of 5 mm or less was fine aggregate and the particle size of 5 mm or more was coarse aggregate. The results are shown in Table 1.
【００４７】コンクリート配合（重量部） セメント：３００ｋｇ 細骨材（粒径５ｍｍ以下の粒状物）： ７００ｋｇ 粗骨材（粒径５ｍｍ以上の粒状物）：１０５０ｋｇ 水：１６５ｋｇ圧潰強度測定方法 ＪＩＳ Ａ １１０８に規定された方法により実施し
た。Mixing of concrete (parts by weight) Cement: 300 kg Fine aggregate (granular material having a particle size of 5 mm or less): 700 kg Coarse aggregate (granular material having a particle size of 5 mm or more): 1050 kg Water: 165 kg Crush strength measuring method JIS A 1108 It was carried out by the method specified in 1.
【００４８】溶出試験方法 昭和４８年環境庁告示第１３号，産業廃棄物に含まれる
金属等の検定方法により検液を作成し、ＪＩＳ Ｋ ０
１０２工場排水の試験方法により微量成分の溶出量を定
量した。 Dissolution test method [0048] JIS K 0 was prepared by preparing a test solution according to the Environmental Agency Notification No. 13 of 1973, a test method for metals contained in industrial waste.
The amount of trace components eluted was determined by the test method of 102 factory wastewater.
【００４９】[0049]
【表１】 [Table 1]
【００５０】表１より、本発明によれば、焼結助剤の添
加効果により、高強度粒状物が得られ、この粒状物は、
微量成分の溶出の問題もなく、コンクリート骨材、路面
材等として有効に使用でき、高強度コンクリート或いは
高耐久性の路面を形成できることが明らかである。From Table 1, according to the present invention, high-strength granules can be obtained by the effect of adding the sintering aid.
It is clear that it can be effectively used as a concrete aggregate, a road surface material, etc. without the problem of elution of trace components, and can form a high-strength concrete or a highly durable road surface.
【００５１】これに対して、焼結助剤を用いない比較例
１では、高強度粒状物を得ることはできない。また、焼
結助剤を用いた場合であっても、乾式粉砕混合を行う比
較例２では、焼結助剤が十分な均一分散状態で混合され
ないため、十分な添加効果が得られず、粒状物の強度は
劣るものとなる。On the other hand, in Comparative Example 1 in which the sintering aid is not used, high-strength particles cannot be obtained. In addition, even in the case where the sintering aid is used, in Comparative Example 2 in which the dry pulverization and mixing are performed, the sintering aid is not mixed in a sufficiently uniformly dispersed state, so that a sufficient addition effect cannot be obtained, and thus the granular material cannot be mixed. The strength of the product is inferior.
【００５２】実施例８〜１４ 焼結助剤として、表２に示すものを、石灰石スラリー
と、都市ゴミスラリー及び／又は水処理汚泥との合計に
対して、表２に示す割合で添加したこと以外は実施例６
と同様にして粒状物を製造し、得られた粒状物につい
て、舗装要綱で規定された方法により一軸圧縮強度及び
修正ＣＢＲを測定し、結果を表２に示した。Examples 8 to 14 As sintering aids, those shown in Table 2 were added in a ratio shown in Table 2 with respect to the total of the limestone slurry and the municipal solid waste slurry and / or the water treatment sludge. Example 6 except for
Granules were produced in the same manner as in, and the uniaxial compressive strength and modified CBR of the obtained granules were measured by the method specified in the pavement summary, and the results are shown in Table 2.
【００５３】[0053]
【表２】 [Table 2]
【００５４】表２より、焼結助剤としては、ホウ酸以外
に酸化リチウム等も使用可能であり、その添加量は乾物
割合で０．０５〜５．０重量％が好適であることがわか
る。From Table 2, it is understood that lithium oxide or the like can be used as the sintering aid in addition to boric acid, and the addition amount thereof is preferably 0.05 to 5.0% by weight in terms of dry matter. .
【００５５】実施例１５〜１８ 石灰石スラリーの配合量を表３に示す割合としたこと以
外は、実施例６と同様にして粒状物を製造し、得られた
粒状物について、舗装要綱で規定された方法により一軸
圧縮強度及び修正ＣＢＲを測定し、結果を表３に示し
た。Examples 15 to 18 Granules were produced in the same manner as in Example 6 except that the blending amount of the limestone slurry was changed to the ratio shown in Table 3, and the obtained granules were specified in the paving outline. The uniaxial compressive strength and the modified CBR were measured by the above methods, and the results are shown in Table 3.
【００５６】[0056]
【表３】 [Table 3]
【００５７】表３より、都市ゴミ、都市ゴミ焼却灰又は
水処理汚泥に対する石灰石の割合は、各々乾燥重量比で
１：１〜２０の範囲が好適であることがわかる。From Table 3, it can be seen that the ratio of limestone to the municipal solid waste, the municipal solid waste incineration ash, or the water-treated sludge is preferably in the range of 1: 1 to 20 in terms of dry weight ratio.
【００５８】[0058]
【発明の効果】以上詳述した通り、本発明の廃棄物より
製造した粒状物及び廃棄物処理方法によれば、都市ゴミ
や水処理汚泥から、コンクリート骨材、路盤材、埋め戻
し材等として有用な高強度粒状物を、発塵の問題もな
く、容易かつ効率的に、安価に得ることができる。As described above in detail, according to the granular material and the waste treatment method produced from the waste of the present invention, it can be used as concrete aggregate, roadbed material, backfill material, etc. from municipal waste and water treatment sludge. Useful high-strength particles can be obtained easily, efficiently, and inexpensively without the problem of dusting.
【００５９】本発明の廃棄物より製造した粒状物及び廃
棄物処理方法は廃棄物の減量化及び有効再利用に有効で
あり、省資源のための技術としてその工業的、社会的有
用性は極めて大である。The granular material produced from waste and the method for treating waste according to the present invention are effective for reducing the amount of waste and for effective reuse, and are extremely industrially and socially useful as a resource-saving technique. Is large.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 18/10 Ｚ 18/30 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display area C04B 18/10 Z 18/30
Claims (6)
を添加して得られる都市ゴミスラリーと、水処理汚泥と
の少なくとも一方と、石灰石に水を添加して得られる石
灰石スラリーと、焼結助剤とを湿式粉砕混合した後、回
転式焼成炉にて焼成して得られる粒状物よりなる廃棄物
より製造した粒状物。1. At least one of a municipal waste slurry obtained by adding water to municipal waste and / or incinerated municipal ash, and a water treatment sludge, and a limestone slurry obtained by adding water to limestone, and fired. Granules produced from waste consisting of granules obtained by wet pulverizing and mixing with a co-agent and then firing in a rotary firing furnace.
ホウ酸、酸化リチウム、フッ化カルシウム及びガラスカ
レット粉砕物よりなる群から選ばれる１種又は２種以上
であることを特徴とする廃棄物より製造した粒状物。2. The granular material according to claim 1, wherein the sintering aid is one or more selected from the group consisting of boric acid, lithium oxide, calcium fluoride and crushed glass cullet. Granules made from waste that is produced.
助剤の添加量が、都市ゴミスラリー及び／又は水処理汚
泥と、石灰石スラリーとの合計に対して乾物割合で０．
０５〜５．０重量％であることを特徴とする廃棄物より
製造した粒状物。3. The granular material according to claim 1 or 2, wherein the amount of the sintering aid added is 0.1% by dry matter ratio with respect to the total of the municipal solid waste slurry and / or water treatment sludge and the limestone slurry.
Granules produced from waste, characterized in that it is from 05 to 5.0% by weight.
を添加して得られる都市ゴミスラリーと、水処理汚泥と
の少なくとも一方と、石灰石に水を添加して得られる石
灰石スラリーと、焼結助剤とを湿式粉砕混合した後、回
転式焼成炉にて焼成して粒状物とすることを特徴とする
廃棄物処理方法。4. A municipal waste slurry obtained by adding water to municipal waste and / or incinerated municipal ash, and at least one of water treatment sludge, and a limestone slurry obtained by adding water to limestone. A method of treating wastes, which comprises wet-grinding and mixing with a co-agent and then firing in a rotary firing furnace to obtain granules.
ウ酸、酸化リチウム、フッ化カルシウム及びガラスカレ
ット粉砕物よりなる群から選ばれる１種又は２種以上で
あることを特徴とする廃棄物処理方法。5. The method according to claim 4, wherein the sintering aid is one or more selected from the group consisting of boric acid, lithium oxide, calcium fluoride and ground glass cullet. Waste treatment method.
剤の添加量が、都市ゴミスラリー及び／又は水処理汚泥
と、石灰石スラリーとの合計に対して乾物割合で０．０
５〜５．０重量％であることを特徴とする廃棄物処理方
法。6. The method according to claim 4 or 5, wherein the addition amount of the sintering aid is 0.0 in terms of a dry matter ratio with respect to the total of the municipal waste slurry and / or the water treatment sludge and the limestone slurry.
A waste treatment method, characterized in that it is 5 to 5.0% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24519294A JP3261604B2 (en) | 1994-10-11 | 1994-10-11 | Waste treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24519294A JP3261604B2 (en) | 1994-10-11 | 1994-10-11 | Waste treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08108162A true JPH08108162A (en) | 1996-04-30 |
| JP3261604B2 JP3261604B2 (en) | 2002-03-04 |
Family
ID=17129993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24519294A Expired - Fee Related JP3261604B2 (en) | 1994-10-11 | 1994-10-11 | Waste treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3261604B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007277048A (en) * | 2006-04-07 | 2007-10-25 | Taiheiyo Cement Corp | Method for manufacturing burned material |
| JP2008030027A (en) * | 2006-06-28 | 2008-02-14 | Mitsubishi Materials Corp | Method for treating asbestos-containing material using cement production process |
| JP2017077551A (en) * | 2015-10-22 | 2017-04-27 | 太平洋セメント株式会社 | Manufacturing method of earthwork material |
| CN110746795A (en) * | 2019-11-04 | 2020-02-04 | 安徽工业大学 | Antirust-flame retardant-physique integrated solid waste resource utilization type pigment and filler and preparation thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2760634C1 (en) * | 2020-11-03 | 2021-11-29 | Федеральное государственное бюджетное учреждение науки Институт физики металлов имени М.Н. Михеева Уральского отделения Российской академии наук (ИФМ УрО РАН) | Method for estimating the impact strength of products made of bainitically quenched construction steel |
-
1994
- 1994-10-11 JP JP24519294A patent/JP3261604B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007277048A (en) * | 2006-04-07 | 2007-10-25 | Taiheiyo Cement Corp | Method for manufacturing burned material |
| JP2008030027A (en) * | 2006-06-28 | 2008-02-14 | Mitsubishi Materials Corp | Method for treating asbestos-containing material using cement production process |
| JP2017077551A (en) * | 2015-10-22 | 2017-04-27 | 太平洋セメント株式会社 | Manufacturing method of earthwork material |
| CN110746795A (en) * | 2019-11-04 | 2020-02-04 | 安徽工业大学 | Antirust-flame retardant-physique integrated solid waste resource utilization type pigment and filler and preparation thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3261604B2 (en) | 2002-03-04 |
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