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WO1997012697A1 - Agent et procede de solidification de residus d'incineration - Google Patents

Agent et procede de solidification de residus d'incineration Download PDF

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Publication number
WO1997012697A1
WO1997012697A1 PCT/JP1996/002733 JP9602733W WO9712697A1 WO 1997012697 A1 WO1997012697 A1 WO 1997012697A1 JP 9602733 W JP9602733 W JP 9602733W WO 9712697 A1 WO9712697 A1 WO 9712697A1
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WIPO (PCT)
Prior art keywords
incineration
solidifying
residue
cement
incineration residue
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.)
Ceased
Application number
PCT/JP1996/002733
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English (en)
Japanese (ja)
Inventor
Kunitoshi Suzuki
Shigeru Yamazaki
Youhei Hisada
Shuji Murai
Takehiko Iizuka
Yasuhiko Hata
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Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Publication of WO1997012697A1 publication Critical patent/WO1997012697A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • 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

Definitions

  • the present invention relates to a solidifying agent for solidifying incineration residues such as incineration ash and dust generated in an incinerator such as a waste incineration plant and a method for solidifying incineration residues.
  • Cadmium (Cd) and lead (Pb) are included in the incineration residue such as incineration ash generated when industrial waste and municipal garbage are incinerated and dust collected by electric dust collectors. ) And other harmful heavy metals, especially when the amount of harmful substances eluted is higher than the standard value when landfilled. It is stipulated by law that it must be disposed of before it is dissolved.
  • incineration residue generated when incinerating industrial waste and municipal trash is landfilled at a managed final disposal site. It is enormous and is said to be 500,000-600,000 tons per year nationwide, and the shortage of disposal sites is a problem. Therefore, one of the solutions is to use incineration residue as a solidifying agent. There is a growing demand for recycling and reusing it in civil engineering materials. Conventional techniques for solidifying such incineration residues include, for example, JP-A-61-133186, JP-A-5-309358, and JP-A-5-33956. There is one disclosed in Japanese Patent Application Publication No. 1118087.
  • Japanese Patent Application Laid-Open No. 5-309356 discloses a method of treating incinerated ash which is stabilized with sulfuric acid and then solidified with cement such as blast furnace cement.
  • cement such as blast furnace cement.
  • the purpose of the treatment is landfill disposal at the final disposal site, the strength of the solidified material and the ability to prevent heavy metals from eluting are extremely low (the elution amount of? 1: 2111).
  • blast furnace cement mixed with blast furnace slag has been used as a solidifying agent as a solidifying agent instead of cement because of cost reduction, heat generation during hydration, and low corrosion.
  • the strength necessary for landfill disposal landfill (uniaxial compressive strength 1 0 kg / cm 2 or higher) and elution preventing property (the landfill reference P b
  • the purpose is to obtain solidified solids of 3 ppm or less. Even if recycling of civil engineering materials is required, the soil environmental standards (0.0 ppm in the case of Pb) ) And high strength (uniaxial compressive strength of 50 to 100 kg / cm 2 or more) were not found.
  • incineration residues especially incineration ash, contain organic impurities such as tannic acid and humic acid.
  • incinerated ash containing organic impurities is solidified by cement, amorphous substances are formed around the unhydrated particles, and these substances are adsorbed on the surface of the cement particles by polarity. Or a bond with Ca ++ to form a coating, which inhibits the hydration reaction of the cement and lowers the strength after solidification, so that a high-strength solid could not be obtained.
  • the Hei 5 - 3 1 7 8 3 the prior art shown in 0 JP, heated over 1 minute baked ⁇ at 4 0 0 e C or higher, or in pairs to 5 to 1 5 weight ash % Water is added, kneaded, and then cooled.
  • the reaction is terminated in advance to suppress the heat generated during solidification. As a result, heat generation during cement solidification and generation of cracks due to the heat generation are prevented, and the effect of obtaining a high-strength solidified body is obtained.
  • Japanese Patent Publication No. 58-49319 discloses a method in which water and caustic aluminum are added to incinerated ash to cause a pressurized contact reaction, resulting in a temperature of 100 ° C or more. This causes a hydrothermal reaction, which generates slurries and thereby slurries and expands, thereby solidifying the cement contained in the incineration ash. It emits and inactivates components (mainly hydrogen and carbon monoxide) that interfere with the environment.
  • components mainly hydrogen and carbon monoxide
  • FIG. 1 shows an example of the relationship between the pH of a solidified product in a solution and the solubility of the heavy metal.
  • a shows the relationship between Cd and b, the solubility of Pb with respect to pH. From this figure, it can be seen that the solubility of Pb in the range of pH 9.5 to 11.5 is It can be seen that the solubility is small, but large before and after this, especially the solubility on the alkaline side where the pH exceeds about 12 is markedly large.
  • the solidified solution When the incineration residue is solidified with a cement-based solidifying agent, the solidified solution generally shows strong alkali, so elution of amphoteric heavy metals such as Pb may occur.
  • the main problem is that if there is a solidifying agent that exhibits mechanical strength while keeping the pH low, it is possible to achieve both the above-mentioned mechanical strength and anti-elution properties.
  • the present inventors have found that an admixture exhibiting latent hydraulic properties, such as blast furnace slag, fly ash, and pozzolan, or pozzolanic activity has the effect of reducing hydroxide ions (OH-) during hardening by adding water. Attention was paid to mixing hydraulic cement and these admixtures in a certain ratio, adding an appropriate amount of water, kneading the mixture, and then molding at room temperature by a molding method such as extrusion molding or compression molding. Thus, it has been found that a solidified body that can prevent the dissolution of Cd and Pb and the like at the same time and has a mechanical strength that can be recycled for civil engineering materials and the like can be obtained.
  • latent hydraulic properties such as blast furnace slag, fly ash, and pozzolan, or pozzolanic activity
  • the first embodiment of the solidifying agent for incineration residues according to the present invention comprises: cement: 0.1 to 29 wt%;
  • the solidifying agent is obtained by mixing the solidifying agent and the incineration residue at a predetermined mixing ratio, kneading the mixture by adding a necessary amount of water, and molding.
  • the pH of the solidifying agent greatly depends on the blending ratio of cement (Portland cement) showing a strong alkali, and therefore, the elution amount of heavy metal is reduced by the incineration residue and solidifying agent.
  • the composition of the incineration residue and the solidifying agent can be considered independently, since the mixing ratio is not significantly affected.
  • an admixture exhibiting latent hydraulic property or pozzolanic activity such as blast furnace slag, does not exhibit curability alone, but calcium hydroxide (C) formed when cement hardens ( C a (OH) 2) shows curability, so a minimum of about 0.1 wt% cement, alkali such as calcium hydroxide, or a curing stimulant such as sulfate is required.
  • the mechanical strength is improved as the amount of cement is increased, but the pH is also increased at the same time, so there is an upper limit to the proportion of cement. According to various experiments by the present inventors, it has been found that when the content exceeds 29 wt%, the amount of heavy metals such as Pb eluted increases in many cases, exceeding the environmental standard.
  • the cement containing the admixture exhibiting latent hydraulic properties or pozzolan activity such as blast furnace slag, fly ash and pozzolan
  • the composition at is as follows.
  • the second embodiment of the solidifying agent for incineration residues according to the present invention has latent hydraulicity or pozzolanic activity.
  • a solidified body is obtained by mixing this solidifying agent with the incineration residue at a predetermined compounding ratio, adding a necessary amount of water, kneading, and molding.
  • the total amount of the admixing agent in the solidifying agent is a problem, and the amount of the admixing agent is determined by the amount of the mixed cell used. It can be obtained by converting to the case where the above Portland cement is used based on the component ratio of the ment.
  • the following shows conversion examples of mixed cement and admixture in the solidifying agent when blast furnace cement is used as the mixed cement.
  • the blast furnace cement is a mixed cement of a boltland cement and a blast furnace slag, and the mixing ratio is determined by JIS as shown in Table 1 below. .
  • composition of the solidifying agent is Portland cement 29 wt% and blast furnace slag 7 iwt%
  • the above Portland cement is replaced with blast furnace cement (class C).
  • the conversion example of the mixing ratio of blast furnace cement and blast furnace slag is shown below.
  • Blast furnace cement (Class C) is, for example, a mixture of 30 wt% of Portland cement and 70 wt% of blast furnace slag, so it is contained in the blast furnace cement. Blast furnace so that the cement By adjusting the ratio of cement, an equivalent solidifying agent can be obtained.
  • the blast furnace slag included in the whole is
  • the composition of the solidifying agent is 0.1 wt% of Portland cement and 99.9 wt% of blast furnace slag
  • the above Portland cement is blast furnace cement (Class A
  • the following is an example of the conversion of the blending ratio of blast furnace cement and blast furnace slag when this is replaced with).
  • Blast furnace cement (species) is a mixture of Portland cement (95 wt%) and blast furnace slag (5 wt%) as an example, so it is contained in the blast furnace cement. If the proportion of the blast furnace cement is adjusted so that the cement content is the same, an equivalent solidifying agent can be obtained.
  • the total cement content is:
  • the blast furnace slag included in the whole is
  • the fly cement is a mixture of Portland cement and fly cement, and the mixing ratio is as shown in Table 2 below in JIS. It is decided.
  • silica cement is a mixed cement of Portland cement and a gay acid admixture from Pozzolan temple, and the compounding ratio is also as shown in Table 3 below. It is decided.
  • the composition of the solidifying agent is Portland cement 29% by weight and gay acid admixture 71% by weight
  • the above Portland cement is silica cement (Class C).
  • the following shows an example of conversion of the ratio of silica cement to a gay acid admixture when replacing with
  • Silicon cement (Class C) is an example of Portland cement. 30 wt% and 70% by weight of gay acid admixture are mixed, so adjust the ratio of silica cement so that the cement content in silica cement is the same. Then, an equivalent solidifying agent can be obtained. In other words, assuming that the silica cement ratio is X wt% and the ratio of the added gaymic admixture is Y wt%, the total cement content is
  • the gay acid admixture contained in the whole is
  • Et al is, the incineration residues, roadbed Ya various blocks, etc., to recycle to the civil engineering materials that require mechanical strength of the uniaxial compressive strength of about 5 0 ⁇ 1 0 0 kg / cm 2
  • the two types of solidifying agent In one of the two types of solidifying agent,
  • the mixture is mixed at the mixing ratio described above, a necessary amount of water is added, the mixture is kneaded, and a solid is obtained by molding.
  • the Pb elution amount was less than 0.01 ppm (soil environmental standard).
  • the compounding ratio of the incineration residue and the solidifying agent is as follows: There is no problem in terms of mechanical strength and elution prevention, but the recycling rate of incineration residue, which is a raw material as a recycled material, decreases, so the processing cost may increase. Even from this point of view, it is generally considered that the upper limit of the compounding ratio of the solidifying agent is about 70 t%.
  • the mechanical strength of the solidified product decreases as the amount of the solidifying agent decreases with respect to the incineration residue as a raw material. According to various experiments by the present inventors, when the mixing ratio of the solidifying agent is 10 wt% or less, the mechanical strength of the solidified material is often reduced to that of recycled materials such as civil engineering materials. island below the uniaxial compression strength 5 0 kg / cm 2 is an eye depreciation of the required mechanical strength Te intends.
  • this incineration residue is eluted with heavy metals that clear environmental standards. It can be made into a solid with prevention.
  • the first embodiment of the method for solidifying incineration residues according to the present invention comprises the following:
  • the incineration residues are adjusted to have a water content of 5 to 35 wt, and then treated at a temperature of 40 to 100 and a humidity of 50 to 50 wt.
  • Steam treatment is performed for 15 minutes to 4 hours in a steam atmosphere controlled to 100%, and then the mixture is kneaded with a solidifying agent such as cement to form and solidify.
  • stirring is not always required during steam treatment, but stirring may provide a higher effect.
  • the incineration residue is subjected to steam treatment to promote the hydration reaction (Pozzolan reaction) of the activated silica in the incineration residue, to increase the particle size of the incineration residue itself, and to increase the aggregate. And the strength is increased.
  • hydration reaction Pozzolan reaction
  • an oxide film is formed on the surface of the reactant to prevent the reaction, or the gas generation reaction between the incineration residue and the alkali is promoted to complete the reaction.
  • the incineration residues are kneaded with a solidifying agent such as cement, molded and cured for a predetermined time.
  • a solidifying agent such as cement
  • resulting et is Ru solidified body Ri
  • uniaxial compressive strength 1 3 0 kg / cm 2
  • the teeth such as the this using a special chemicals
  • H of sufficient strength as the re cycles material such as civil engineering materials You get the body.
  • the incineration residues are heated to a treatment temperature of 250 to 900 to decompose organic impurities in the incineration residues, and then the The moisture of the incineration residue is adjusted to a water content of 5 to 3 ⁇ wt ° o, and then the steam atmosphere is controlled at a treatment temperature of 40 to 100% and a humidity of 50 to 100%.
  • the mixture is steamed for 15 minutes to 4 hours while being stirred at, and then kneaded with a solidifying agent such as cement to form and solidify.
  • the organic residue in the incineration residue is removed by decomposition or the like by subjecting the combustion residue to heat treatment at 250 to 900. Then, by steaming the incineration residue, the hydration reaction (Pozzolan reaction) of activated silica in the incineration residue is promoted, and the particle size of the incineration residue itself and the strength as aggregate are increased. Will be increased. And At this time, an oxide film is formed on the surface of the reactant to prevent the reaction, or the gas generation reaction between the incineration residue and the alkali is promoted to complete the reaction.
  • the hydration reaction Puzzolan reaction
  • the water content has been adjusted, and then the steam treatment has been performed, even if the incineration residue containing organic impurities is used for civil engineering materials, etc.
  • a high-strength solid can be obtained as a recycled material.
  • FIG. 1 is a diagram showing the relationship between pH and the solubility of heavy metals (: C d, P b).
  • FIG. 2 is an explanatory view showing a second embodiment of the method for solidifying incineration residues according to the present invention.
  • FIG. 3 is an explanatory view showing a third embodiment of the method for solidifying incineration residues according to the present invention.
  • Figure 4 is a diagram showing the uniaxial compression strength against the initial moisture content of incinerated ash during steam treatment.
  • Figure 5 is a graph showing the uniaxial compressive strength of incinerated ash against the steam treatment temperature.
  • Fig. 6 is a graph showing the uniaxial compressive strength of incinerated ash against steam treatment humidity.
  • Fig. 7 is a graph showing the uniaxial compressive strength of incinerated ash against steaming time.
  • FIG. 8 is a diagram showing the uniaxial compressive strength of incinerated ash with respect to the heat treatment temperature.
  • FIG. 9 is a graph showing the uniaxial compressive strength of incinerated ash with respect to the heat treatment time.
  • Solidifying agent 100 wt 3 ⁇ 4 Composition Portland cement 28 wt ° o Blast furnace slag 72 2 wt% Add an appropriate amount of water to the above mixture, knead, and add 100 kg / cm 2 Press molding under pressure
  • a lead elution amount of 0.011 ppm ( : a dissolution test based on the Environment Agency Notification No. 13) was obtained.
  • Solidifying agent 30 wt ⁇ ⁇ Composition Portland cement 1 wt%
  • Solidifying agent 35 wt ⁇ % Composition silica cement (: Class C) 40 wt% silica fume 60 wt% To the above mixture, add an appropriate amount of water and knead. this filtrate and was press-molded by applying a pressure of kg / cm 2
  • Solidifying agent 20 wt% Composition Portland cement 0.3 wt% Blast furnace slag 99.7 wt% Add an appropriate amount of water to the above mixture, knead, and add 100 kg / cm Two Press molding
  • a lead elution amount of 0.02 ppm (a dissolution test based on the Notification of the Environment Agency No. 13) was obtained.
  • the mixing ratio of solidifying agent against the ash to 1 0 wt% or is less than 8 wt 0, the mixing ratio Pol preparative run-de Se e n t in solidifying agent 3
  • the strength of the solidified body did not reach 50 kg / cm 2 and there was a problem in strength.
  • the elution prevention of lead slightly exceeded the standard.
  • the mixing ratio of the solidifying agent is set to 10 wt% or more (that is, In the first embodiment of the method for solidifying incineration residues according to the present invention, wherein the mixing ratio of the incinerator residue and the incineration residue is 30 to 90 wt% of the incineration residue and 10 to 70 wt% of the solidifying agent).
  • the mixing ratio of Portland cement in the solidifying agent was set to 29 wt% or less
  • the mechanical strength of the solidified body exceeded 50 kg / cm-
  • the expected strength was obtained.
  • the elution amount of lead (heavy metal) was less than the environmental standard value, respectively, and the elution prevention of heavy metal was confirmed.
  • the latent water A small amount of admixture showing hard or pozzolanic activity
  • cement admixtures such as gypsum and water reducing agents are often added in small amounts to improve workability and improve the quality of solidified products. Even in the solidifying agent according to the present invention, the desired performance of the solidifying agent can be obtained even if these cement admixtures are added within the range of the present invention.
  • gypsum may generate ettringite when the cement undergoes a hydration reaction, thereby improving strength. Gypsum also has the effect of delaying the hydration of cement.
  • FIG. 2 shows a second embodiment of the method for solidifying incineration residues according to the present invention.
  • this if it is solidified by untreated or or cell e n t, using the uniaxial compressive strength of 5 kg / cm 2 (2 8 days curing) there is only ash (original ash), this Put it into hopper 1, apply it to grizzly feeder 2, and remove large metal such as empty cans with primary magnetic separator 3.
  • small metals are removed by the secondary magnetic separator 4, and then the non-ferrous metals are removed by a non-ferrous separator 5 such as an aluminum separator, and the particle size is adjusted by passing through a 4 mm sieve 6. I do.
  • water is added by a water conditioner 7 to adjust the water content to 10%. Then, let it stand for 24 hours to allow the water to adjust to the ash.
  • the mixture is stirred for 2 hours in a steam atmosphere at a temperature of 100 and a humidity of 98% by a rotary steam processor 8.
  • the incinerated ash subjected to the steam heating treatment is mixed in a kneader 9 with 80 wt% of the incinerated ash and 20 wt% of the solidifying agent (composition: 50 wt% of blast furnace cement B, 50 wt%, blast furnace slurry).
  • the mixture is kneaded at a ratio of 50 wt% j, and the mixture is applied to a molding machine 10 and compression molded at a surface pressure of 100 kg / cm 2 to obtain a solid 11.
  • the unconfined compressive strength was measured to be 130 kg / cm 2 .
  • FIG. 3 shows a third embodiment of the method for solidifying incineration residues according to the present invention. This is due to the fact that it contains organic impurities, so that the treatment according to the second embodiment, that is, the steam treatment and then the solidification in cement
  • incineration ash with a uniaxial compressive strength of 5 kg / cm 2 or less was pretreated as follows and then solidified with a solidifying agent.
  • the same portions as those of the second embodiment shown in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted.
  • the above incinerated ash is put into the hopper 1, passed through the grizzly feeder 2, and the large metal is removed by the primary magnetic separator 3. Then, the incinerated ash is removed by the tiller type heat treatment machine 12. Is heated at 400 for 2 hours.
  • the small metal is removed by the secondary magnetic separator 4, then the non-ferrous metal is removed by the non-ferrous separator 5, and the particle size is adjusted by passing through a 4 mm sieve 6. Then, after the incinerated ash whose particle size has been adjusted cools down, water is added by a water content adjuster 7 so that the moisture content of the incinerated ash becomes 10%.
  • the mixture is stirred for 2 hours in a steam atmosphere at a temperature of 100 and a humidity of 98% in a rotary steam processor 8.
  • the incinerated ash subjected to the steam heating treatment is mixed in a kneader 9 with 80 wt% of incinerated ash and 20 w% of solidifying agent (composition: 50 wt% of blast furnace cement, class 50 wt%, blast furnace slag).
  • the mixture is kneaded at a ratio of 50 t% j, and the mixture is applied to a molding machine 10 and compression molded at a contact pressure of 100 kg / cm 2 to obtain a solid 11.
  • the unconfined compressive strength was measured to be 13.6 kg / cm 2 .
  • reaction mechanism of the incinerated ash in the rotary steam processor 8 is not necessarily clear, but it is considered that the following reactions are mainly involved.
  • the condition range refers to a range in which the unconfined compressive strength of the solidified body is 50 kg / cm 2 or more
  • the experimentally preferable range refers to a range in which the highest strength is obtained.
  • the initial moisture content of the incineration ash during steam treatment is 5 to 35%, and the experimentally preferred range is 10 to 20%.
  • Fig. 5 shows the uniaxial compressive strength of the incinerated ash against the steam treatment temperature.After heating the incinerated ash at 400 ° C for 2 hours, the moisture content was adjusted to 10% and the steam temperature was adjusted to 20%.
  • 40, 85, and 100 respectively, show the uniaxial compressive strength of the solidified material when steamed at 98% humidity for 2 hours.
  • the condition range of the steam temperature during steam processing is 40 or more, and the experimentally preferable range is 60 to 100.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention concerne un procédé ainsi qu'un agent de solidification de résidus d'incinération, tels que les cendres et la suie subsistant dans un incinérateur d'une usine d'incinération de déchets. Cet agent de solidification comprend 0,1-29 % en poids de ciment et 71-99,9 % en poids de mélange présentant une hydraulicité ou une pouzzolanicité latentes. Le procédé de solidification consiste à mélanger 10-70 % en poids de cet agent de solidification avec 30-90 % en poids de résidus d'incinération, et à mouler ce mélange en y ajoutant la quantité d'eau nécessaire.
PCT/JP1996/002733 1995-09-29 1996-09-20 Agent et procede de solidification de residus d'incineration Ceased WO1997012697A1 (fr)

Applications Claiming Priority (2)

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JP7/252611 1995-09-29
JP25261195A JPH0994548A (ja) 1995-09-29 1995-09-29 焼却残渣用固化剤及び焼却残渣の固化方法

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Cited By (1)

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CN112777971A (zh) * 2021-01-29 2021-05-11 广东中翔环保建材有限公司 一种垃圾焚烧炉渣重金属固化方法

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Publication number Priority date Publication date Assignee Title
JP4217202B2 (ja) * 2004-10-04 2009-01-28 株式会社金沢舗道 重金属含有焼却灰の再資源化方法
JP5558027B2 (ja) * 2009-05-08 2014-07-23 株式会社東芝 放射性廃棄物の固化処理方法

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JPH05317830A (ja) * 1992-05-27 1993-12-03 Mitsui Eng & Shipbuild Co Ltd 焼却灰の前処理方法
JPH06304544A (ja) * 1993-04-06 1994-11-01 Sol Cie 汚染廃棄物の処理方法、該方法により得られる生成物及び汚染廃棄物を凝固するための生成物
JPH0796263A (ja) * 1992-07-27 1995-04-11 Masuo Sekizai Kogyo Kk 廃棄物焼却灰の処理方法および装置
JPH07328587A (ja) * 1994-05-31 1995-12-19 Teruo Takei セメント系廃棄物処理用組成物
JPH08276167A (ja) * 1995-04-06 1996-10-22 Tatsuro Momo 焼却灰の硬化剤並びに焼却灰の硬化方法及び焼却灰の硬化体

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05261356A (ja) * 1991-12-18 1993-10-12 Sol Cie 厨芥焼却により得られる生成物、例えばドロス、フライアッシュ、煤煙浄化残渣を安定化および固化する方法、この方法により得られる生成物およびこの方法を実施するための物質
JPH05317830A (ja) * 1992-05-27 1993-12-03 Mitsui Eng & Shipbuild Co Ltd 焼却灰の前処理方法
JPH0796263A (ja) * 1992-07-27 1995-04-11 Masuo Sekizai Kogyo Kk 廃棄物焼却灰の処理方法および装置
JPH06304544A (ja) * 1993-04-06 1994-11-01 Sol Cie 汚染廃棄物の処理方法、該方法により得られる生成物及び汚染廃棄物を凝固するための生成物
JPH07328587A (ja) * 1994-05-31 1995-12-19 Teruo Takei セメント系廃棄物処理用組成物
JPH08276167A (ja) * 1995-04-06 1996-10-22 Tatsuro Momo 焼却灰の硬化剤並びに焼却灰の硬化方法及び焼却灰の硬化体

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* Cited by examiner, † Cited by third party
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