JP3190209B2 - Method for making ash molten slag transparent - Google Patents
Method for making ash molten slag transparentInfo
- Publication number
- JP3190209B2 JP3190209B2 JP19265294A JP19265294A JP3190209B2 JP 3190209 B2 JP3190209 B2 JP 3190209B2 JP 19265294 A JP19265294 A JP 19265294A JP 19265294 A JP19265294 A JP 19265294A JP 3190209 B2 JP3190209 B2 JP 3190209B2
- Authority
- JP
- Japan
- Prior art keywords
- molten slag
- transparent
- ash
- ash molten
- slag
- 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 - Fee Related
Links
- 239000002893 slag Substances 0.000 title claims description 27
- 238000000034 method Methods 0.000 title claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 150000004767 nitrides Chemical class 0.000 claims description 9
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 239000000654 additive Substances 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002699 waste material Substances 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
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
- C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えばごみ焼却灰を溶
融した際に生じる灰溶融スラグの透明化方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for making ash molten slag transparent when, for example, incinerated ash is melted.
【０００２】[0002]
【従来の技術】従来、製鉄所で発生するスラグの有効利
用を図るために、その色調が変えられている。2. Description of the Related Art Conventionally, in order to effectively use slag generated in a steel mill, its color tone has been changed.
【０００３】例えば、製鉄所で発生するスラグは、その
鉄の含有量が２％程度であり、その色調は、特開昭６３
−１３９０３７号公報、または特開昭６３−７９７４２
号公報に開示されているように、ＭｎＯ2またはＣｒ2Ｏ
3の添加により、色調が変えられていた。[0003] For example, slag generated in steel works has an iron content of about 2%, and its color tone is disclosed in
JP-A-139037 or JP-A-63-79742
MnO 2 or Cr 2 O as disclosed in
The color tone was changed by the addition of 3 .
【０００４】[0004]
【発明が解決しようとする課題】しかし、上述したよう
に、ごみ焼却灰における溶融スラグは、製鉄所で発生す
るスラグとは異なり、鉄成分の含有量が５〜１５％と多
く、茶褐色を呈している。このように、鉄成分が多い
と、ＭｎＯ2などを添加しても、その色調を変えること
ができないという問題があった。However, as described above, the molten slag in the incinerated ash differs from the slag generated in steelworks in that the iron content is as high as 5 to 15%, and it is brownish. ing. As described above, when the iron content is large, there is a problem that the color tone cannot be changed even when MnO 2 or the like is added.
【０００５】そこで、本発明は上記問題を解消し得る灰
溶融スラグの透明化方法を提供することを目的とする。Accordingly, an object of the present invention is to provide a method for making ash molten slag transparent, which can solve the above problems.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するた
め、本発明の灰溶融スラグの透明化方法は、酸化鉄に換
算して５〜２０重量％の鉄分を含有する溶融スラグに、
炭素およびガラス構成元素の窒化物若しくは炭化物を添
加した後、不活性ガス雰囲気下で、加熱・溶融させる方
法である。Means for Solving the Problems In order to solve the above-mentioned problems, the method for making ash molten slag transparent according to the present invention comprises:
After addition of nitride or carbide of carbon and glass construction elements, in an inert gas atmosphere, a method of heating and melting.
【０００７】また、本発明の他の灰溶融スラグの透明化
方法は、酸化鉄に換算して５〜２０重量％の鉄分を含有
する溶融スラグに、ガラス構成元素の窒化物若しくは炭
化物を添加した後、不活性ガス雰囲気下で、加熱・溶融
させる方法である。 [0007] Another ash-melting slag of the present invention is made transparent.
The method contains 5 to 20% by weight of iron in terms of iron oxide
Molten slag to be added
Heating and melting under an inert gas atmosphere
It is a way to make it.
【０００８】[0008]
【作用】上記の構成によると、高濃度のＦｅ成分を含む
灰溶融スラグを透明化することができ、したがって廃棄
されていた灰溶融スラグを再利用することができる。According to the above arrangement, the ash molten slag containing a high concentration of Fe component can be made transparent, and thus the ash molten slag that has been discarded can be reused.
【０００９】[0009]
【実施例】以下、本発明の灰溶融スラグの透明化方法の
一実施例について説明する。本発明は、酸化鉄に換算し
て５〜２０重量％の鉄分を含むものに、ＣおよびＳｉ，
Ｂ，Ａｌ，Ｔｉなどのガラス構成元素の窒化物若しくは
炭化物を添加した後、またはＳｉ，Ｂ，Ａｌ，Ｔｉなど
のガラス構成元素の窒化物若しくは炭化物を添加した
後、不活性ガスの雰囲気下で、加熱・溶融することによ
り、溶融スラグを透明化させる方法である。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for making ash molten slag transparent according to the present invention will be described below. The present invention is, in terms of iron oxide which contains 5 to 20 wt% of iron, C and Si,
After adding nitride or carbide of glass constituent elements such as B, Al, Ti, or Si, B, Al, Ti, etc.
Added nitride or carbide of glass constituent element
Thereafter, the molten slag is heated and melted in an inert gas atmosphere to make the molten slag transparent.
【００１０】以下、焼却灰の溶融スラグとして、ＳｉＯ
2；３３重量％，Ａｌ2Ｏ3；１７重量％，ＣａＯ；２４
重量％，Ｆｅ2Ｏ3；１１重量％，Ｎａ2Ｏ；３重量％，
ＭｇＯ；４重量％，Ｋ2Ｏ；２重量％，ＴｉＯ2；２重量
％，およびその他４重量％（蛍光Ｘ線による成分分析に
基づく）から成るものを使用し、このものに、上述した
ように、ＣおよびＳｉ，Ｂ，Ａｌ，Ｔｉなどのガラス構
成元素の窒化物若しくは炭化物を、またはＳｉ，Ｂ，Ａ
ｌ，Ｔｉなどのガラス構成元素の窒化物若しくは炭化物
を、所定の条件で添加した結果を、下記の［表１］に示
す。Hereinafter, SiO 2 is used as a molten slag of incinerated ash.
2 ; 33% by weight, Al 2 O 3 ; 17% by weight, CaO;
% By weight, Fe 2 O 3 ; 11% by weight, Na 2 O: 3% by weight,
MgO; 4% by weight, K 2 O; 2% by weight, TiO 2 ; 2% by weight, and 4% by weight (based on component analysis by fluorescent X-ray) were used, which were described above.
Thus, nitrides or carbides of C and glass constituent elements such as Si , B, Al, Ti, or Si, B, A
Nitride or carbide of glass constituent elements such as l and Ti
And the result of addition by a predetermined condition, shown in [Table 1] below.
【００１１】なお、各表中、添加量が基本条件であると
いうのは、これは、例えばＣを添加した場合、 Ｆｅ2Ｏ3＋３／２Ｃ→２Ｆｅ＋３／２ＣＯ2↑ ・・・・(1) (1) 式の反応で得られる量を表している。In each table, the addition amount is a basic condition because, for example, when C is added, Fe 2 O 3 + 3 / 2C → 2Fe + 3 / 2CO 2 ↑ (1) It represents the amount obtained by the reaction of equation (1).
【００１２】また、試料番号９に示すように、添加物を
２種にした場合の割合とは、例えばスラグ中に、１０ｇ
のＦｅ2Ｏ3があったとした場合、６０：４０では、６ｇ
が１方の添加物と反応し、残りの４ｇが他方の添加物と
反応するように、配合することを意味している。さら
に、加熱温度は１５００℃である。Further, as shown in Sample No. 9 , the ratio when two kinds of additives are used is, for example, 10 g in slag.
If there is Fe 2 O 3 of 6:40, 6 g
Means reacting with one additive and the remaining 4 g reacting with the other additive. Further, the heating temperature is 1500 ° C.
【００１３】[0013]
【表１】 ［表１］において、試料番号１は、添加物をＣだけとし
た場合を示しており、大気中では、添加したＣが優先的
に酸化されるため、褐色となり透明にはならなかった。[Table 1] In [Table 1], sample No. 1 has only C as an additive.
In the air, since added C was preferentially oxidized, the carbon became brown and did not become transparent.
【００１４】試料番号２〜６は、添加物がＢ，Ｓｉ，Ａ
ｌなどの炭化物または窒化物で、加熱雰囲気が不活性ガ
スの場合を示しており、これらの色調は透明であった。
試料番号７は、試料番号２における添加量を基本条件の
２倍にした場合を示しており、この場合でも、十分な効
果が得られているのが分かる。Sample Nos. 2 to 6 have additives B, Si, A
1 shows a case where the heating atmosphere is an inert gas, such as a carbide or nitride such as 1 and the color tone thereof was transparent.
Sample No. 7 shows a case where the addition amount in Sample No. 2 was twice the basic condition, and it can be seen that a sufficient effect was obtained also in this case.
【００１５】一方、試料番号８のように、試料番号２に
おける添加量を過剰に（例えば、基本条件の５倍）にし
た場合には、逆効果となり、色調は褐色となった。さら
に、試料番号９〜１３に示すように、添加物を、２種以
上（例えば、Ｃと炭化物またはＣと窒化物）組み合わせ
ても良く、また試料番号１６および１７に示すように、
添加物の添加割合を変化させても、その効果は変わらな
かった。なお、試料番号１４および１５に示すように、
添加成分が、ガラス成分となり難い物質または着色効果
を持つ物質では、透明にならなかった。On the other hand, when the addition amount in Sample No. 2 was excessively increased (for example, five times the basic condition) as in Sample No. 8 , the effect was reversed, and the color tone became brown. Further, as shown in Sample Nos. 9 to 13 , the additives may be used in combination of two or more kinds (for example, C and carbide or C and nitride), and as shown in Sample Nos. 16 and 17 ,
Even if the addition ratio of the additive was changed, the effect was not changed. In addition, as shown in sample numbers 14 and 15 ,
When the additive component is a substance that is unlikely to become a glass component or a substance that has a coloring effect, the composition did not become transparent.
【００１６】また、試料番号１８は、添加物を加えない
場合を示しており、当然ながら、色調は褐色であった。
通常、廃棄物の灰溶融スラグに含まれるＦｅ成分は、最
大、２０％であり、本発明の方法により、十分な効果、
すなわち高濃度のＦｅ成分を含む灰溶融スラグから金属
を分離できるとともに、灰溶融スラグを透明化すること
ができる。Sample No. 18 shows the case where no additive was added, and the color tone was naturally brown.
Usually, the Fe component contained in the ash molten slag of the waste is a maximum of 20%, and the method of the present invention has a sufficient effect,
That is, the metal can be separated from the ash molten slag containing a high concentration of Fe component, and the ash molten slag can be made transparent.
【００１７】[0017]
【発明の効果】以上のように本発明の灰溶融スラグの透
明化方法によると、高濃度のＦｅ成分を含む灰溶融スラ
グを透明化することができるので、従来、利用されてい
なかった灰溶融スラグの再利用を図ることができる。As described above, according to the method for making ash-melted slag transparent according to the present invention, ash-melted slag containing a high concentration of Fe component can be made transparent. The slag can be reused.
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 5/06 Continuation of front page (58) Field surveyed (Int.Cl. 7 , DB name) C04B 5/06
Claims (2)
含有する溶融スラグに、炭素およびガラス構成元素の窒
化物若しくは炭化物を添加した後、不活性ガス雰囲気下
で、加熱・溶融させることを特徴とする灰溶融スラグの
透明化方法。To 1. A molten slag which contains 5 to 20 wt% of iron in terms of iron oxide, after addition of nitride or carbide of carbon and glass construction elements, in an inert gas atmosphere, A method for making ash molten slag transparent, characterized by heating and melting.
含有する溶融スラグに、ガラス構成元素の窒化物若しく
は炭化物を添加した後、不活性ガス雰囲気下で、加熱・
溶融させることを特徴とする灰溶融スラグの透明化方
法。 2. An iron content of 5 to 20% by weight in terms of iron oxide.
In the molten slag containing, the nitride of glass constituent element
After adding carbide, heat and heat in an inert gas atmosphere.
How to make ash molten slag transparent, characterized by melting
Law.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19265294A JP3190209B2 (en) | 1994-08-17 | 1994-08-17 | Method for making ash molten slag transparent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19265294A JP3190209B2 (en) | 1994-08-17 | 1994-08-17 | Method for making ash molten slag transparent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0859308A JPH0859308A (en) | 1996-03-05 |
| JP3190209B2 true JP3190209B2 (en) | 2001-07-23 |
Family
ID=16294807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19265294A Expired - Fee Related JP3190209B2 (en) | 1994-08-17 | 1994-08-17 | Method for making ash molten slag transparent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3190209B2 (en) |
-
1994
- 1994-08-17 JP JP19265294A patent/JP3190209B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0859308A (en) | 1996-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |