JPH039440B2 - - Google Patents

Info

Publication number
JPH039440B2
JPH039440B2 JP59272066A JP27206684A JPH039440B2 JP H039440 B2 JPH039440 B2 JP H039440B2 JP 59272066 A JP59272066 A JP 59272066A JP 27206684 A JP27206684 A JP 27206684A JP H039440 B2 JPH039440 B2 JP H039440B2
Authority
JP
Japan
Prior art keywords
microwave
particles
incinerating
absorption properties
stirrer
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.)
Expired - Lifetime
Application number
JP59272066A
Other languages
Japanese (ja)
Other versions
JPS61153308A (en
Inventor
Mitsuhiko Nomi
Junichi Yamaji
Toyoji Mizushima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebara Corp
Original Assignee
Ebara Corp
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 Ebara Corp filed Critical Ebara Corp
Priority to JP59272066A priority Critical patent/JPS61153308A/en
Priority to EP85114782A priority patent/EP0185931B1/en
Priority to DE8585114782T priority patent/DE3583595D1/en
Priority to CN85109267A priority patent/CN1008396B/en
Priority to KR1019850008987A priority patent/KR930010859B1/en
Publication of JPS61153308A publication Critical patent/JPS61153308A/en
Priority to US06/893,461 priority patent/US4718358A/en
Publication of JPH039440B2 publication Critical patent/JPH039440B2/ja
Priority to KR1019930013040A priority patent/KR930010860B1/en
Priority to KR1019930013041A priority patent/KR930010861B1/en
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/64Heating using microwaves
    • H05B6/80Apparatus for specific applications
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/085High-temperature heating means, e.g. plasma, for partly melting the waste
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F23G5/165Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber arranged at a different level
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/24Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a vertical, substantially cylindrical, combustion chamber
    • F23G5/28Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a vertical, substantially cylindrical, combustion chamber having raking arms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/063Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating electric heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/12Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of plastics, e.g. rubber
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21FPROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28Treating solids
    • G21F9/30Processing
    • G21F9/32Processing by incineration
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2204/00Supplementary heating arrangements
    • F23G2204/20Supplementary heating arrangements using electric energy
    • F23G2204/203Microwave
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00Specific waste
    • F23G2209/18Radioactive materials
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/04Heating using microwaves
    • H05B2206/045Microwave disinfection, sterilization, destruction of waste...

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • Gasification And Melting Of Waste (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、新規なマイクロ波焼却炉を用いて、
使用済イオン交換樹脂、使用済活性炭、セルロー
ス系繊維、合成繊維、プリコート材、或いは粉末
合成繊維からなる廃棄物を焼却減容する方法に関
する。
[Detailed description of the invention] [Industrial application field] The present invention uses a novel microwave incinerator to
The present invention relates to a method for incinerating and reducing the volume of waste consisting of used ion exchange resins, used activated carbon, cellulose fibers, synthetic fibers, precoat materials, or powdered synthetic fibers.

〔従来の技術及びその問題点〕[Conventional technology and its problems]

従来、例えば原子力施設から排出される使用済
イオン交換樹脂、各種の使用済過助材等の廃棄
物は、その大部分が原子力施設のタンク内に貯蔵
されており、これ等の廃棄物の量は次第に増加し
て来ており、その有効な処理方法の開発が急がれ
ている。
Conventionally, most of the waste such as used ion exchange resins and various used supercharging materials discharged from nuclear facilities has been stored in the tanks of the nuclear facilities, and the amount of these wastes has increased significantly. are gradually increasing, and there is an urgent need to develop effective treatment methods.

この処理方法の一手段として、従来よりマイク
ロ波エネルギを廃棄物に直接照射して加熱し焼却
する方法が提案されている。
As one means of this treatment method, a method has been proposed in the past in which waste is directly irradiated with microwave energy to heat and incinerate it.

しかしながら、従来のマイクロ波焼却炉を用い
て前記の如き廃棄物(以下、被燃物という)を焼
却する方法においては次の如き問題点がある。
However, the method of incinerating the above-mentioned waste (hereinafter referred to as combustible material) using a conventional microwave incinerator has the following problems.

(1) 乾燥した被燃物はマイクロ波の吸収特性が悪
い。
(1) Dry combustible materials have poor microwave absorption characteristics.

(2) イオン交換樹脂の如き高分子量のプラスチツ
クを焼却する場合には、高温で十分な酸素補給
ができる雰囲気でないとタール分、未燃カーボ
ンが多量に発生し、十分な燃焼が行われ難い。
(2) When incinerating high-molecular-weight plastics such as ion exchange resins, unless the atmosphere is high and provides sufficient oxygen supply, a large amount of tar and unburned carbon will be generated, making it difficult to achieve sufficient combustion.

(3) 炉床全面に被燃物ならびにマイクロ波を均一
に分散ならびに照射させないと局部燃焼を起し
良好な燃焼状態を保つことができず、局部過熱
の心配も生ずる。
(3) If the combustible materials and microwaves are not uniformly distributed and irradiated over the entire surface of the hearth, local combustion will occur, making it impossible to maintain good combustion conditions and causing concerns about local overheating.

(4) 特に高分子プラスチツクを焼却する場合に
は、熔融して団塊化し、内部は空気との接触が
悪く、カーボン化してしまい、燃焼がスムース
に行われ難い。
(4) In particular, when incinerating polymeric plastics, they melt and form into agglomerates, and the interior has poor contact with air and turns into carbon, making it difficult to burn smoothly.

〔発明の構成〕[Structure of the invention]

本発明は、マイクロ波を加熱源とするマイクロ
波焼却炉により被燃物を焼却する方法において、
マイクロ波の照射により加熱され、且つ、撹拌機
により加熱されているマイクロ波吸収特性の優れ
ている粒子よりなる層上に被燃物を投入して焼却
する方法であつて、炉底部に充填した粒状のマイ
クロ波吸収材にマイクロ波を照射し、500℃以上
に加熱し、撹拌機で粒状のマイクロ波吸収材充填
層を撹拌しながら、かつ、充填層下部より十分な
燃焼用空気を供給しながら被燃物を連続的に供給
しつつ焼却することにより、前記従来技術におけ
る問題点を解決したものである。
The present invention provides a method for incinerating a combustible material using a microwave incinerator using microwaves as a heating source.
A method of incineration by placing the material to be burned on a layer of particles with excellent microwave absorption properties that is heated by microwave irradiation and a stirrer, and is incinerated at the bottom of the furnace. The granular microwave absorbing material is irradiated with microwaves, heated to 500℃ or higher, and the granular microwave absorbing material packed bed is stirred with a stirrer while sufficient combustion air is supplied from the bottom of the packed bed. However, by incinerating the combustible material while continuously supplying it, the problems in the prior art described above are solved.

即ち、高温に加熱された充填材層上に被燃物が
供給されるため、被燃物は高温の充填粒子上にま
ぶされる形となり、該充填粒子上に薄く、万べん
なく分散されるため、加熱速度が早く、且つ、充
填層下部より均一に供給される空気との接触効率
も高く、従つて従来法に比し遥かに少量の空気で
効率良く焼却することができ、被燃物が放射性を
帯びている場合、燃焼用空気が少量ですむため焼
却廃ガスの発生量も従来法に比し少く、廃ガスの
処理も容易となる。
That is, since the combustible material is supplied onto the filler layer that has been heated to a high temperature, the combustible material is sprinkled on the high-temperature filler particles and is thinly and evenly dispersed on the filler particles. Therefore, the heating rate is fast, and the contact efficiency with the air uniformly supplied from the bottom of the packed bed is also high. Therefore, compared to conventional methods, it is possible to incinerate efficiently with a much smaller amount of air, and the incineration material is If the incinerator is radioactive, only a small amount of combustion air is required, so the amount of incineration waste gas generated is smaller than in conventional methods, and the waste gas can be easily disposed of.

本発明で用いるマイクロ波吸収材粒子の構成素
材としては、SiC、TiO2、イルメナイト、
BaTiO3、Fe2O3、SiC+Si3N4、ZrO2、CaO、砂
等マイクロ波吸収特性と共に耐熱性を有するもの
なら何れを使用してもよいが、マイクロ波吸収特
性等からみてSiC、TiO2、イルメナイト、
BaTiO3、Fe2O3特にSiC、TiO2が好ましく、ま
た粒子径としては1〜7mm程度のもの、特に2〜
5mmの範囲のものが好ましい。
The constituent materials of the microwave absorber particles used in the present invention include SiC, TiO 2 , ilmenite,
BaTiO 3 , Fe 2 O 3 , SiC + Si 3 N 4 , ZrO 2 , CaO, sand, etc. Any material that has microwave absorption properties and heat resistance may be used, but from the viewpoint of microwave absorption properties, SiC, TiO 2 , ilmenite,
BaTiO 3 , Fe 2 O 3 , especially SiC, TiO 2 are preferable, and the particle size is about 1 to 7 mm, especially 2 to 7 mm.
Preferably, the diameter is in the range of 5 mm.

また、粒子マイクロ波吸収材層の厚さは、撹拌
機の大きさによつても異なるが、通常300mm程度
またはそれ以上あれば十分である。
Further, the thickness of the particle microwave absorbing material layer varies depending on the size of the stirrer, but it is usually sufficient if it is about 300 mm or more.

また、撹拌機は、その撹拌羽根の上端が、静止
状態において、粒状マイクロ波吸収材層の表面か
ら1cmまたはそれ以上の深さになる位置に設置す
るのが好ましい。
Further, the stirrer is preferably installed at a position where the upper end of the stirring blade is at a depth of 1 cm or more from the surface of the granular microwave absorbing material layer in a stationary state.

つぎに、図面に基いて本発明を詳しく説明す
る。
Next, the present invention will be explained in detail based on the drawings.

第1図において、符号1は焼却炉、2は焼却廃
ガス出口部、3はマイクロ波導入管、4は被燃物
供給フイーダ、5は炉底板、6はマイクロ波吸収
材よりなる粒状物充填層、7は撹拌機、7′は撹
拌羽根、8は撹拌軸、9は燃焼用空気供給ノズ
ル、10,10′は燃焼用空気供給管、11は焼
却灰排出口を示す。
In Fig. 1, numeral 1 is an incinerator, 2 is an incineration waste gas outlet, 3 is a microwave introduction pipe, 4 is a feeder for supplying combustible materials, 5 is a furnace bottom plate, and 6 is a granular material filling made of microwave absorbing material. 7 is a stirrer, 7' is a stirring blade, 8 is a stirring shaft, 9 is a combustion air supply nozzle, 10 and 10' are combustion air supply pipes, and 11 is an incinerated ash discharge port.

被燃物を焼却する場合、先づモータM1により
撹拌機7を起動し、ついでマイクロ波導入管より
マイクロ波を照射する。粒状物充填層の温度が
500℃以上となつた時点で燃焼用空気供給ノズル
9より空気を供給し、ついで被燃物供給フイーダ
より被燃物を粒状物充填層上に供給し、燃焼させ
る。
When incinerating the combustible material, first the stirrer 7 is started by the motor M1, and then microwaves are irradiated from the microwave introduction pipe. The temperature of the granule packed bed is
When the temperature reaches 500°C or higher, air is supplied from the combustion air supply nozzle 9, and then the combustible material is supplied from the combustible material feeder onto the granular material packed bed and combusted.

このような燃焼方式を採用することにより、被
燃物は高温の充填層の粒子上に燃焼しながら均一
に分散され、高温で十分な酸素雰囲気に保たれる
ため、炉全域で良好に燃焼させることができる。
By adopting this combustion method, the materials to be combusted are evenly dispersed while burning on the particles in the high-temperature packed bed, and a sufficient oxygen atmosphere is maintained at high temperatures, resulting in good combustion throughout the furnace. be able to.

撹拌機の回転速度は、焼却炉の大きさにもよる
が5〜20回/分の範囲が好ましく、また空気供給
ノズルはどのような型のものでもよいが、多孔性
のセラミツクバンドよりなるものが好ましい。
The rotational speed of the stirrer is preferably in the range of 5 to 20 times per minute, depending on the size of the incinerator, and the air supply nozzle may be of any type, but it is preferably made of a porous ceramic band. is preferred.

また、撹拌機の撹拌軸等が炉中に露出している
場合、マイクロ波を反射する原因ともなるので、
撹拌機の駆動部は炉の下部に設けるのが好まし
い。
Also, if the stirring shaft of the stirrer is exposed in the furnace, it may cause microwaves to be reflected.
Preferably, the drive part of the stirrer is provided in the lower part of the furnace.

被燃物の焼却量、空気の供給量等は、被燃物の
種類、炉の大きさ、マイクロ波の強さ、等により
異なるが、これらはテストにより簡単に求めるこ
とができる。
The amount of incineration of the material to be burned, the amount of air supplied, etc. vary depending on the type of material to be burned, the size of the furnace, the strength of the microwave, etc., but these can be easily determined by testing.

〔発明の効果〕〔Effect of the invention〕

本発明方法によれば、マイクロ波エネルギの吸
収性が悪く、燃焼時に多量のタール分、未燃カー
ボンを発生し易い難燃性のイオン交換樹脂廃棄物
を容易に燃焼させ、完全に焼却することができ
る。
According to the method of the present invention, it is possible to easily burn and completely incinerate flame-retardant ion exchange resin waste, which has poor microwave energy absorption properties and tends to generate large amounts of tar and unburned carbon when burned. Can be done.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明方法を説明するためのマイクロ
波焼却炉の断面概略図である。 1……焼却炉、2……焼却廃ガス出口部、3…
…マイクロ波導入管、4……被燃物供給フイー
ダ、5……炉底板、6……マイクロ波吸収材より
なる粒状物充填層、7……撹拌機、9……燃焼用
空気供給ノズル。
FIG. 1 is a schematic cross-sectional view of a microwave incinerator for explaining the method of the present invention. 1...Incinerator, 2...Incineration waste gas outlet, 3...
. . . Microwave introduction pipe, 4 .

Claims (1)

【特許請求の範囲】 1 マイクロ波を加熱源とするマイクロ波焼却炉
により使用済イオン交換樹脂、使用済活性炭、繊
維類、プリコート材或いは粉末合成繊維からなる
廃棄物を焼却減容する方法において、マイクロ波
の照射により高温に加熱され、且つ、撹拌機によ
り撹拌されているマイクロ波吸収特性の優れてい
る粒子よりなる層上に前記廃棄物を投入して焼却
する方法。 2 マイクロ波吸収特性の優れた粒子が、金属又
は非金属の炭化物または酸化物もしくは、これら
の複合体である特許請求の範囲第1項記載の方
法。 3 マイクロ波吸収特性の優れた粒子が炭化ケイ
素又は酸化チタンである特許請求の範囲第2項記
載の方法。
[Scope of Claims] 1. A method for incinerating and reducing the volume of waste consisting of used ion exchange resin, used activated carbon, fibers, precoat material, or powdered synthetic fibers in a microwave incinerator using microwaves as a heating source, A method of incinerating the waste by placing it on a layer of particles with excellent microwave absorption properties that are heated to a high temperature by microwave irradiation and stirred by a stirrer. 2. The method according to claim 1, wherein the particles having excellent microwave absorption properties are metal or nonmetal carbides or oxides, or composites thereof. 3. The method according to claim 2, wherein the particles having excellent microwave absorption properties are silicon carbide or titanium oxide.
JP59272066A 1984-12-25 1984-12-25 Incineration of waste ion exchange resin or the like effected by microwave Granted JPS61153308A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP59272066A JPS61153308A (en) 1984-12-25 1984-12-25 Incineration of waste ion exchange resin or the like effected by microwave
EP85114782A EP0185931B1 (en) 1984-12-25 1985-11-21 Method and apparatus for processing waste matter
DE8585114782T DE3583595D1 (en) 1984-12-25 1985-11-21 METHOD AND DEVICE FOR TREATING WASTE MATERIAL.
CN85109267A CN1008396B (en) 1984-12-25 1985-11-28 Method and apparatus for processing waste matter
KR1019850008987A KR930010859B1 (en) 1984-12-25 1985-11-30 Method and apparatus for processing waste materials
US06/893,461 US4718358A (en) 1984-12-25 1986-08-08 Method and apparatus for processing waste matter
KR1019930013040A KR930010860B1 (en) 1984-12-25 1993-07-12 Method and apparatus for processing waste materials
KR1019930013041A KR930010861B1 (en) 1984-12-25 1993-07-12 Method and apparauts for processing waste material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59272066A JPS61153308A (en) 1984-12-25 1984-12-25 Incineration of waste ion exchange resin or the like effected by microwave

Publications (2)

Publication Number Publication Date
JPS61153308A JPS61153308A (en) 1986-07-12
JPH039440B2 true JPH039440B2 (en) 1991-02-08

Family

ID=17508617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59272066A Granted JPS61153308A (en) 1984-12-25 1984-12-25 Incineration of waste ion exchange resin or the like effected by microwave

Country Status (1)

Country Link
JP (1) JPS61153308A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62169913A (en) * 1986-01-22 1987-07-27 Ebara Res Co Ltd Disposing method and device for organic chlorine series compound or waste containing organic chlorine series compound
US5945342A (en) * 1998-05-18 1999-08-31 Westinghouse Savannah River Company Method for digesting spent ion exchange resins and recovering actinides therefrom using microwave radiation
EP1413826A1 (en) * 2002-10-22 2004-04-28 Institut Francais Du Petrole Process and apparatus for the micro-wave treatment of solid residues from the thermal degradation of a charge containing organic matter

Also Published As

Publication number Publication date
JPS61153308A (en) 1986-07-12

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