JP2001089203A - Deleading method of molten slag - Google Patents
Deleading method of molten slagInfo
- Publication number
- JP2001089203A JP2001089203A JP26672699A JP26672699A JP2001089203A JP 2001089203 A JP2001089203 A JP 2001089203A JP 26672699 A JP26672699 A JP 26672699A JP 26672699 A JP26672699 A JP 26672699A JP 2001089203 A JP2001089203 A JP 2001089203A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- slag
- molten slag
- iron
- based compound
- 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
- 239000002893 slag Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052742 iron Inorganic materials 0.000 claims abstract description 13
- 150000001875 compounds Chemical class 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 8
- 239000003513 alkali Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000002378 acidificating effect Effects 0.000 claims description 5
- 150000002506 iron compounds Chemical class 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 230000001112 coagulating effect Effects 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 15
- 229910021578 Iron(III) chloride Inorganic materials 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 abstract description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract description 2
- 239000011575 calcium Substances 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 230000003311 flocculating effect Effects 0.000 abstract 1
- 230000016615 flocculation Effects 0.000 abstract 1
- 238000005189 flocculation Methods 0.000 abstract 1
- 238000010828 elution Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000007922 dissolution test Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 239000002956 ash Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910003849 O-Si Inorganic materials 0.000 description 1
- 229910003872 O—Si Inorganic materials 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、溶融スラグの処理
方法に係り、特に、鉛を含有する溶融スラグに溶出防止
処理を施し、鉛の目標基準値をクリアする溶融スラグの
脱鉛処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating molten slag, and more particularly, to a method for deleading molten slag, in which a lead-containing molten slag is subjected to an elution-preventing treatment to meet a target standard value of lead. .
【０００２】[0002]
【従来の技術】鉛の目標基準値とは、平成１０年３月２
６日付けで厚生省から各都道府県知事・政令指定都市市
長宛に通達された、「一般廃棄物の溶融固化物の再利用
の促進ついて」に記載されている、一般廃棄物の溶融固
化物に係わる目標基準値のことであり、その鉛の目標基
準値は０．０１ｍｇ／Ｌ以下となっている。ところが、
これまで、溶融スラグからの鉛溶出防止対策技術は皆無
であった。2. Description of the Related Art The target standard value of lead is March 2, 1998.
The Ministry of Health, Labor and Welfare issued a notice to the prefectural governors and mayor-designated city mayors on the 6th. This is the target reference value concerned, and the target reference value of lead is 0.01 mg / L or less. However,
Until now, there was no technology to prevent lead elution from molten slag.
【０００３】[0003]
【発明が解決しようとする課題】そこで、本発明は、鉛
等重金属を含有する溶融スラグを無害化し、さらにスラ
グの再資源化を図るための鉛の目標基準値をクリアする
ことができる溶融スラグの脱鉛処理方法を提供すること
を課題とする。SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a molten slag which can render molten slag containing heavy metals such as lead harmless and clear the target standard value of lead for recycling slag. It is an object of the present invention to provide a lead removal treatment method.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、鉛を含有する溶融スラグを、ｐＨ９〜
１２のアルカリ条件下で水に浸漬させ、次いで鉄系化合
物を加えてｐＨを８〜１０に調整して鉛を溶出させ、溶
出した鉛を鉄化合物の持つ凝集力で吸着凝集させること
を特徴とする溶融スラグの脱鉛処理方法としたものであ
る。また、本発明では、鉛を含有する溶融スラグを、鉱
酸を加えてｐＨを２〜６に調整した酸性水に浸漬させ、
スラグ中の鉛を溶出させ、次いでアルカリを添加してｐ
Ｈ９〜１２に調整した後、鉄系化合物を加え、溶出した
鉛を鉄化合物の持つ凝集力で吸着凝集させることを特徴
とする溶融スラグの脱鉛処理方法としたものである。In order to solve the above-mentioned problems, the present invention provides a method for producing a lead-containing molten slag having a pH of 9 to 9.
Immersed in water under alkaline conditions of 12, and then adjust the pH to 8 to 10 by adding an iron-based compound to elute the lead, and adsorb and coagulate the eluted lead by the cohesive force of the iron compound. Of the molten slag to be deleaded. In the present invention, the molten slag containing lead is immersed in acidic water adjusted to pH 2 to 6 by adding a mineral acid,
The lead in the slag is eluted and then alkali is added to p
After adjusting to H9 to 12, an iron-based compound is added, and the eluted lead is adsorbed and coagulated by the cohesive force of the iron compound.
【０００５】このように本発明では、鉛を含有する溶融
スラグの脱鉛処理方法において、前記溶融スラグを水に
浸漬しアルカリ条件でスラグの結晶構造を不安定化させ
て鉛を溶出させるか、鉱酸を加えてｐＨ２〜６に調整し
た酸性水に浸漬して鉛を溶出させる。この際、アルカリ
剤には、ＮａＯＨ、ＫＯＨ、Ｃａ（ＯＨ）2等を用い、
ｐＨ９〜１２で鉛の溶出を行う。この時には、緩速攪拌
を行うのが好ましい。次に、鉄系化合物の無機凝集剤を
ｐＨ８〜１０になるまで加えるか、アルカリでｐＨ９〜
１２に調整後鉄系化合物を加え、スラグの結晶構造内の
鉛を溶出することによる脱鉛処理方法としたものであ
る。As described above, according to the present invention, in the method for deleading molten slag containing lead, the molten slag is immersed in water to destabilize the crystal structure of the slag under alkaline conditions to elute lead. The lead is eluted by immersing in acidic water adjusted to pH 2 to 6 by adding a mineral acid. At this time, NaOH, KOH, Ca (OH) 2 or the like is used as the alkaline agent,
Elution of lead is carried out at pH 9-12. At this time, it is preferable to perform slow stirring. Next, an inorganic coagulant of an iron-based compound is added until the pH becomes 8 to 10, or the pH is adjusted to 9 to 9 with an alkali.
In this method, an iron-based compound was added to 12 and the lead in the crystal structure of the slag was eluted to remove lead.
【０００６】[0006]
【発明の実施の形態】本発明は、鉛を含有する溶融スラ
グ（下水汚泥、焼却主灰、焼却主灰+焼却飛灰等を由来
とするもの）の処理方法であり、溶融スラグの無害化と
再資源化を図るための目標基準値をクリアするためのス
ラグ処理方法である。鉛を含有する溶融スラグを酸及び
／又はアルカリ水に浸漬し、スラグの結晶構造を不安定
化させることで鉛を溶出し易くさせた後、ｐＨ調整剤を
添加してｐＨ９〜１２にし、そこに鉄系化合物を加え
て、スラグの結晶構造を打開して、鉛を溶出させること
を特徴とする処理方法である。なお、上記酸及び／又は
アルカリ水は用意しておいても、スラグ浸漬後、該浸漬
水のｐＨを調整して酸性やアルカリ性にしても良い。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is a method for treating molten slag containing lead (derived from sewage sludge, incinerated primary ash, incinerated primary ash + incinerated fly ash, etc.), and makes the molten slag harmless. And a slag processing method for clearing a target reference value for recycling. The molten slag containing lead is immersed in acid and / or alkaline water to destabilize the crystal structure of the slag to facilitate the elution of the lead. This is a treatment method characterized by adding an iron compound to the slag to break down the crystal structure of the slag and elute the lead. The acid and / or alkaline water may be prepared, or after slag immersion, the pH of the immersion water may be adjusted to make it acidic or alkaline.
【０００７】次に本発明を詳細に説明する。まず、都市
ゴミ焼却工場における焼却灰を溶融処理したスラグを、
水中でＮａＯＨ等のアルカリ剤もしくは鉱酸を添加して
アルカリ性又は酸性とし、スラグとアルカリ又は酸が十
分に接触するように攪拌する。好ましくは攪拌時間を３
０分以上とするのが良い。この段階では、スラグのＳｉ
−Ｏ−Ｓｉ網目構造のうち、不完全な結合状態の酸素橋
がＮａ+、Ｈ+やＯＨ-イオンによって打開され、網目構
造の空孔が押し広げられ、Ｓｉ−Ｏ−Ｓｉ網目構造に包
含されている鉛が溶出、もしくは溶出しやすくなる。Next, the present invention will be described in detail. First, the slag obtained by melting the incineration ash at the municipal waste incineration plant,
An alkaline agent such as NaOH or a mineral acid is added in water to make it alkaline or acidic, and the slag is stirred so that the alkali or acid is sufficiently contacted. Preferably, the stirring time is 3
It is good to set it to 0 minutes or more. At this stage, the slag Si
Of the -O-Si network structure, the imperfectly bonded oxygen bridge is broken by Na + , H + and OH - ions, and the pores of the network structure are expanded to be included in the Si-O-Si network structure. Lead that has been eluted or is easily eluted.
【０００８】次に、塩化第二鉄、ポリ鉄等の鉄系無機凝
集剤単独もしくはアルカリ剤を併用しながら、ｐＨを最
適凝集域に下げ、攪拌する。攪拌時間を３０分以上とす
るのが好ましい。この操作では、イオンによって押し広
げられた網目構造の空孔にＦｅ2+又はＦｅ3+が入り込
み、Ｆｅの凝集力でスラグ中の鉛と結合し、化合物を形
成して沈殿となる。これら一連の処理を施すことで、脱
鉛された溶融スラグと、鉛を含んだスラリーに分離回収
できる。Next, the pH is lowered to an optimum coagulation range while stirring with an iron-based inorganic coagulant such as ferric chloride or polyiron alone or in combination with an alkali agent, followed by stirring. The stirring time is preferably 30 minutes or more. In this operation, Fe 2+ or Fe 3+ enters the pores of the network structure expanded by the ions and combines with the lead in the slag by the cohesive force of Fe to form a compound and precipitate. By performing these series of treatments, it is possible to separate and collect the lead slag and the lead-containing slurry.
【０００９】[0009]
【実施例】以下に本発明を実施例により具体的に説明す
る。 実施例１ この実施例は、人工的に作成した溶融スラグを処理した
ものである。純水１５０ｍＬに溶融スラグ５０．００ｇ
を入れ、ＮａＯＨ（ＩＮ溶液）でｐＨを９〜１２．Oに
調整後、３０分緩速攪拌させ、スラグ表面と液が十分に
接触するようにする（溶出段階）。次に、１０ｇ／Ｌ溶
液の塩化第二鉄を滴下してｐＨ８〜１Oに調整し緩速攪
拌して鉛を沈殿させた（抽出段階）。スラグと鉛沈殿物
を溶液から回収し、このスラグを環境庁告示４６号法に
基づいて溶出試験に供した。表１に、一連の試験に供し
た人工スラグ組成と鉛溶出試験結果を記す。The present invention will be specifically described below with reference to examples. Example 1 In this example, an artificially produced molten slag was treated. 50.00g of molten slag in 150mL of pure water
And adjust the pH to 9-12 with NaOH (IN solution). After adjusting to O, the mixture is gently stirred for 30 minutes so that the slag surface and the liquid are sufficiently contacted (elution step). Next, a 10 g / L solution of ferric chloride was added dropwise to adjust the pH to 8 to 10 and stirred slowly to precipitate lead (extraction step). The slag and the lead precipitate were recovered from the solution, and the slag was subjected to a dissolution test based on the Environmental Agency Notification No. 46 method. Table 1 shows the composition of the artificial slag subjected to the series of tests and the results of the lead elution test.
【００１０】[0010]
【表１】 [Table 1]
【００１１】溶出試験の結果は、前処理無しスラグで
は、Ｐｂ溶出濃度が０．０６９ｍｇ／Ｌ〜０,０９５ｍ
ｇ／Ｌと、いずれも鉛目標基準値０．０１ｍｇ／Ｌを超
えていた。ところが、本方法で処理すると０．００５ｍ
ｇ／Ｌ〜０．０８ｍｇ／Ｌとなり、鉛目標基準値をクリ
アーでき、スラグを舗装用骨材等に再利用するのに十分
可能な値となった。The results of the dissolution test show that the slag without pretreatment has a Pb dissolution concentration of 0.069 mg / L to 0.095 m
g / L, both of which exceeded the lead target standard value of 0.01 mg / L. However, when treated by this method, 0.005 m
From g / L to 0.08 mg / L, the lead target standard value could be cleared, and the value was sufficiently possible to reuse slag for pavement aggregate and the like.
【００１２】実施例２ この実施例は、人工的に作成した溶融スラグを処理した
ものである。純水１５０ｍＬに溶融スラグ５０．００g
を入れ、塩酸（１Ｎ溶液)でｐＨを２〜６に調整後、３
０分緩速攪拌させ、スラグ表面と液が十分に接触するよ
うにする（溶出段階）。次に、ＮａＯＨを用いてｐＨ８
〜１０に調整した後、１０ｇ／Ｌ溶液の塩化第二鉄を滴
下して、緩速攪拌して鉛を沈殿させた（抽出段階）。ス
ラグと鉛沈殿物を溶液から回収し、このスラグを環境庁
告示４６号法に基づいて溶出試験に供した。表２に、一
連の試験に供した人工スラグ組成と鉛溶出試験結果を記
す。Example 2 In this example, an artificially produced molten slag was treated. 50.00g of molten slag in 150mL of pure water
And adjust the pH to 2 to 6 with hydrochloric acid (1N solution).
The mixture is gently stirred for 0 minutes so that the slag surface and the liquid come into sufficient contact (elution step). Next, using NaOH to adjust the pH to 8.
After adjusting to -10, a 10 g / L solution of ferric chloride was added dropwise and stirred slowly to precipitate lead (extraction step). The slag and lead precipitate were recovered from the solution, and the slag was subjected to a dissolution test based on the Environment Agency Notification No. 46 method. Table 2 shows the composition of the artificial slag subjected to a series of tests and the results of the lead elution test.
【００１３】[0013]
【表２】 [Table 2]
【００１４】溶出試験の結果は、前処理無しスラグでは
Ｐｂ溶出濃度が０．１０３ｍｇ／Ｌ〜０．０４６ｍｇ／
Ｌと、いずれも鉛目標基準値０．０１ｍｇ／Ｌを超えて
いた。ところが、本方法で処理すると０．００５ｍｇ／
Ｌ〜０．００７ｍｇ／Ｌとなり、鉛目標基準値をクリア
ーでき、スラグを舗装用骨材等に再利用するのに十分可
能な値となった。The results of the dissolution test show that the slag without pretreatment has a Pb dissolution concentration of 0.103 mg / L to 0.046 mg / L.
L, and both exceeded the lead target standard value of 0.01 mg / L. However, when treated by this method, 0.005 mg /
It became L-0.007 mg / L, and the lead target standard value was able to be cleared, and it was a value sufficiently possible to reuse slag for pavement aggregate and the like.
【００１５】[0015]
【発明の効果】本発明によれば、スラグ中の鉛含有量に
左右されること無く、「一般廃棄物の溶融固化物の再利
用の促進ついて」に記載されている、一般廃棄物の溶融
固化物に係わる鉛の目標基準値をクリアーできるスラグ
を提供できる。According to the present invention, regardless of the lead content in the slag, the melting of general waste described in "Promotion of Reuse of Solidified Molten Waste" is described. It is possible to provide a slag capable of meeting a target standard value of lead relating to solidified matter.
Claims (2)
２のアルカリ条件下で水に浸漬させ、次いで鉄系化合物
を加えてｐＨを８〜１０に調整して鉛を溶出させ、溶出
した鉛を鉄化合物の持つ凝集力で吸着凝集させることを
特徴とする溶融スラグの脱鉛処理方法。1. A molten slag containing lead having a pH of 9-1.
Characterized in that it is immersed in water under alkaline conditions of 2, and then the pH is adjusted to 8 to 10 by adding an iron-based compound to elute lead, and the eluted lead is adsorbed and coagulated by the cohesive force of the iron compound. Method for de-leading molten slag.
てｐＨを２〜６に調整した酸性水に浸漬させ、スラグ中
の鉛を溶出させ、次いでアルカリを添加してｐＨ９〜１
２に調整した後、鉄系化合物を加え、溶出した鉛を鉄化
合物の持つ凝集力で吸着凝集させることを特徴とする溶
融スラグの脱鉛処理方法。2. A molten slag containing lead is immersed in acidic water adjusted to a pH of 2 to 6 by adding a mineral acid to elute the lead in the slag, and then an alkali is added to adjust the pH to 9 to 1.
2. A method for removing lead from molten slag, comprising adding an iron-based compound after adjusting to 2, and adsorbing and coagulating the eluted lead by the cohesive force of the iron compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26672699A JP2001089203A (en) | 1999-09-21 | 1999-09-21 | Deleading method of molten slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26672699A JP2001089203A (en) | 1999-09-21 | 1999-09-21 | Deleading method of molten slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001089203A true JP2001089203A (en) | 2001-04-03 |
Family
ID=17434841
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26672699A Pending JP2001089203A (en) | 1999-09-21 | 1999-09-21 | Deleading method of molten slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001089203A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105897A (en) * | 2006-10-25 | 2008-05-08 | Takuma Co Ltd | Molten slag treatment equipment and molten slag treatment method using the equipment |
| JP2008168289A (en) * | 2006-12-11 | 2008-07-24 | Sumitomo Metal Ind Ltd | Detoxification method for heavy metal-containing basic waste |
| JP2012224506A (en) * | 2011-04-20 | 2012-11-15 | Pan Pacific Copper Co Ltd | Method for circulating slag water-granulating water, and its installation |
-
1999
- 1999-09-21 JP JP26672699A patent/JP2001089203A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105897A (en) * | 2006-10-25 | 2008-05-08 | Takuma Co Ltd | Molten slag treatment equipment and molten slag treatment method using the equipment |
| JP2008168289A (en) * | 2006-12-11 | 2008-07-24 | Sumitomo Metal Ind Ltd | Detoxification method for heavy metal-containing basic waste |
| JP2012224506A (en) * | 2011-04-20 | 2012-11-15 | Pan Pacific Copper Co Ltd | Method for circulating slag water-granulating water, and its installation |
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