JP3319346B2 - Hydraulic composition using steelmaking slag - Google Patents
Hydraulic composition using steelmaking slagInfo
- Publication number
- JP3319346B2 JP3319346B2 JP17940897A JP17940897A JP3319346B2 JP 3319346 B2 JP3319346 B2 JP 3319346B2 JP 17940897 A JP17940897 A JP 17940897A JP 17940897 A JP17940897 A JP 17940897A JP 3319346 B2 JP3319346 B2 JP 3319346B2
- Authority
- JP
- Japan
- Prior art keywords
- steelmaking slag
- chelating agent
- slag
- hydraulic composition
- cement
- 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
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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0086—Chelating or complexing agents
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、製鉄所から廃棄さ
れる製鋼系スラグの利用技術、特に、製鋼系スラグを用
いたセメントなどの水硬性組成物に関する。The present invention relates to a technology for utilizing steelmaking slag discarded from an ironworks, and more particularly to a hydraulic composition such as cement using the steelmaking slag.
【０００２】[0002]
【従来の技術】製鋼系スラグは、化学組成が高炉スラグ
ほど安定してない、使用中に膨張・粉化するなどの問題
があるため、埋立用材料や道路路盤材などの一部に利用
されているに過ぎない。2. Description of the Related Art Steelmaking slag is used as a part of landfill materials and road subgrade materials because of its chemical composition, which is not as stable as blast furnace slag, and has problems such as expansion and powdering during use. It's just that.
【０００３】一方、文献１〔坪井ら：セメント技術年
報、２８、９８（１９７４）〕などに見られるように、
古くから製鋼系スラグには水硬性があることが知られて
おり、文献２〔野村ら：鉄と鋼、６６（１９８０）Ｓ１
４７〕では、製鋼系スラグの用途拡大を目的として水硬
性の促進方法が検討されている。文献２によれば、転炉
スラグの粉末に水砕スラグ粉末、石膏、ＣａＣｌ2 を加
えると水硬性が促進され、その強度発現機構は粗粒の転
炉スラグが骨材として作用していることによると考察し
ている。On the other hand, as shown in Document 1 [Tsuboi et al .: Annual Cement Technology Report, 28, 98 (1974)] and the like,
It has been known that steelmaking slag has hydraulic properties for a long time.
47], a method of promoting hydraulicity is being studied for the purpose of expanding the use of steelmaking slag. According to Document 2, adding granulated slag powder, gypsum, and CaCl 2 to converter slag powder promotes hydraulicity, and the mechanism of strength development is that coarse converter slag acts as aggregate. According to the study.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、この製
鋼系スラグの水硬性を利用した実際の用途については言
及されていない。However, there is no mention of an actual application utilizing the hydraulic property of the steelmaking slag.
【０００５】本発明は、製鋼系スラグを用いたセメント
などの水硬性組成物を提供することを目的とする。An object of the present invention is to provide a hydraulic composition such as cement using steelmaking slag.
【０００６】[0006]
【課題を解決するための手段】上記課題は、製鋼系スラ
グとキレート化剤を含む水溶液とが混練された製鋼系ス
ラグを用いた水硬性組成物により解決される。The above object is achieved by a hydraulic composition using a steelmaking slag in which a steelmaking slag and an aqueous solution containing a chelating agent are kneaded.
【０００７】一般に、製鋼系スラグの水硬性の反応速度
は非常に遅いため、そのままではセメントなどの水硬性
組成物として利用できない。そこで、何らかの方法で水
硬性を促進させる必要がある。上記文献２のように水砕
スラグ粉末、石膏、ＣａＣｌ 2 の副原料を合計で２０％
近く添加して促進する方法もあるが、製鋼系スラグの利
用率が低下するので好ましくない。Generally, the reaction rate of hydraulicity of steelmaking slag
Is very slow, so as it is
Not available as a composition. So, somehow water
It is necessary to promote hardness. Water granulation as described in Reference 2 above
Slag powder, gypsum, CaCl Two20% in total
There is a method to promote the addition of steel slag, but the use of steelmaking slag is
It is not preferable because the usage rate decreases.
【０００８】本発明者らは、水砕スラグ粉末、石膏、Ｃ
ａＣｌ2 などの副原料を添加せず、製鋼系スラグとキレ
ート化剤を含む水溶液とを混練すれば、その水硬性を促
進でき、しかも水溶液中のキレート化剤の種類、濃度お
よび製鋼系スラグとキレート化剤を含む水溶液との割合
を適宜調整すれば、セメントなどの水硬性組成物として
用いることができることを見出した。その原因は必ずし
も明らかでないが、キレート化剤により製鋼系スラグに
含まれている難溶性の２ＣａＯ・Ｆｅ2 Ｏ3 や２ＣａＯ
・Ｓｉ2 Ｏ3 が溶解し、水和反応が促進されたためと推
察される。[0008] The present inventors have proposed granulated slag powder, gypsum, C
If steelmaking slag and an aqueous solution containing a chelating agent are kneaded without adding an auxiliary material such as aCl 2 , the hydraulic property can be promoted, and the type, concentration, and It has been found that by appropriately adjusting the ratio to an aqueous solution containing a chelating agent, the composition can be used as a hydraulic composition such as cement. Although the cause is not always clear, the poorly soluble 2CaO.Fe 2 O 3 or 2CaO contained in the steelmaking slag by the chelating agent is used.
It is presumed that Si 2 O 3 was dissolved and the hydration reaction was promoted.
【０００９】一般に、製鋼系スラグは経時的に膨張・粉
化するが、セメントなどに利用される場合は、粉状にし
て用いられるので膨張・粉化は起き難い。しかし、膨張
・粉化を完全に抑制するには、エージング処理された製
鋼系スラグを用いる方が好ましい。Generally, steelmaking slag expands and powders with the passage of time, but when it is used for cement or the like, it is hardly expanded and powdered because it is used in powder form. However, in order to completely suppress expansion and powdering, it is preferable to use an aged steelmaking slag.
【００１０】キレート化剤としては、強アルカリ性溶液
中で鉄、アルミニウム、マンガンなどの３価の金属イオ
ンとキレート化合物を形成するトリエタノールアミン、
トリイソプロパノールアミン、フェノールなどが望まし
い。As a chelating agent, triethanolamine which forms a chelate compound with a trivalent metal ion such as iron, aluminum or manganese in a strongly alkaline solution;
Triisopropanolamine, phenol and the like are desirable.
【００１１】キレート化剤を含む水溶液中のキレート化
剤の濃度は、少量でも水硬性を促進する効果を有する
が、０．０００５ｗｔ％以上にすると水硬性の促進が顕
著になる。[0011] The concentration of the chelating agent in the aqueous solution containing the chelating agent has an effect of promoting hydraulic property even if the amount is small, but when the concentration is 0.0005 wt% or more, the promotion of hydraulic property becomes remarkable.
【００１２】セメントの代替材として用いるには、現状
のセメント程度の粉状、すなわちその比表面積が１００
０ｃｍ2 ／ｇ以上であることが望ましい。For use as a substitute for cement, a powdery material equivalent to that of existing cement, that is, having a specific surface area of 100
Desirably, it is 0 cm 2 / g or more.
【００１３】また、製鋼系スラグ１００重量部に対しキ
レート化剤を含む水溶液が５〜５０重量部であることが
望ましい。５重量部未満ではセメントとしての強度が充
分に発現されず、５０重量部を超えると流動性が著しく
増し、セメント代替材として使用できなくなる。The amount of the aqueous solution containing the chelating agent is preferably 5 to 50 parts by weight based on 100 parts by weight of the steelmaking slag. If it is less than 5 parts by weight, the strength as a cement will not be sufficiently exhibited, and if it exceeds 50 parts by weight, the fluidity will remarkably increase, and it will not be possible to use it as a cement substitute.
【００１４】[0014]
【発明の実施の形態】製鋼系スラグとしては、転炉、電
気炉、混銑炉などで発生したスラグのみならず、溶銑予
備処理スラグなども用いることができる。BEST MODE FOR CARRYING OUT THE INVENTION As steelmaking slag, not only slag generated in a converter, an electric furnace, a mixed-iron furnace, etc., but also slag of molten iron pretreatment can be used.
【００１５】[0015]
【実施例】製鋼系スラグとして、蒸気エージングにより
ＪＩＳ Ａ ５０１５に規定された水浸膨張比を０．５
％とした転炉スラグを用いた。この転炉スラグを比表面
積３０００ｃｍ2 ／ｇに粉砕し、トリエタノールアミ
ン、トリイソプロパノールアミン、フェノールのいずれ
か１種のキレート化剤が１ｗｔ％含まれる水溶液をスラ
グ１００重量部に対し２０重量部混練してペースト状の
セメント代替材の試料を作成した。EXAMPLE As a steelmaking slag, the water immersion expansion ratio specified in JIS A 5015 by steam aging was 0.5.
% Converter slag was used. The converter slag was pulverized to a specific surface area of 3000 cm 2 / g, and 20 parts by weight of an aqueous solution containing 1 wt% of any one chelating agent of triethanolamine, triisopropanolamine and phenol was mixed with 100 parts by weight of the slag. As a result, a paste-like cement substitute sample was prepared.
【００１６】そして、ＪＩＳ Ｒ ５２０１「セメント
の物理試験方法」に従い材令９１日後の圧縮強度を測定
した。Then, the compressive strength after 91 days of material age was measured according to JIS R 5201 “Physical test method of cement”.
【００１７】また、トリエタノールアミンについて、そ
の水溶液中の濃度を変えて、経時的に圧縮強度を測定し
た。The compressive strength of triethanolamine was measured over time while changing the concentration in the aqueous solution.
【００１８】材令９１日後の圧縮強度を表１に示す。比
較として、文献３〔秋山 桂一著：「セメント・コンク
リートの化学」堀越研究所発行（１９８４）〕にある普
通ポルトランドセメントのデータも示してある。Table 1 shows the compressive strength after 91 days of material age. For comparison, data of ordinary Portland cement in Reference 3 [Keiichi Akiyama: “Chemistry of Cement and Concrete”, published by Horikoshi Research Institute (1984)] is also shown.
【００１９】トリエタノールアミンでは３９０ｋｇｆ／
ｃｍ2 、トリイソプロパノールアミンでは３５０ｋｇｆ
／ｃｍ2 、フェノールでは３２０ｋｇｆ／ｃｍ2 と、普
通ポルトランドセメントの４００ｋｇｆ／ｃｍ2 に匹敵
あるいはそれに近い強度が得られることがわかる。With triethanolamine, 390 kgf /
cm 2 , 350 kgf for triisopropanolamine
/ Cm 2 , 320 kgf / cm 2 for phenol, and a strength comparable to or close to 400 kgf / cm 2 for ordinary Portland cement.
【００２０】[0020]
【表１】 [Table 1]
【００２１】図１に、トリエタノールアミンを用いたと
きの圧縮強度の経時変化を示す。文献３にある普通ポル
トランドセメントの結果も合わせて示した。FIG. 1 shows the change over time of the compressive strength when using triethanolamine. The results of ordinary Portland cement in Reference 3 are also shown.
【００２２】普通ポルトランドセメントでは、材令２８
日前後で強度発現が飽和するが、トリエタノールアミン
の場合は、いずれの濃度においても材令とともに強度が
増加する。また、トリエタノールアミンでは、普通ポル
トランドセメントに比べ初期の強度発現が遅いが、濃度
が１ｗｔ％以上の場合は、材令９１日前後で、また、
０．０１ｗｔ％の場合は、材令１８０日前後で普通ポル
トランドセメントの強度を超え、高い強度を発現でき
る。For ordinary Portland cement, material age 28
The strength expression saturates around the day, but in the case of triethanolamine, the strength increases with age at any concentration. In addition, triethanolamine has a lower initial strength development than ordinary Portland cement, but when the concentration is 1 wt% or more, around 91 days before the material age,
In the case of 0.01 wt%, the strength exceeds the strength of ordinary Portland cement around 180 days before the material age, and high strength can be exhibited.
【００２３】[0023]
【発明の効果】本発明は以上説明したように構成されて
いるので、製鋼系スラグを用いたセメントなどの水硬性
組成物を提供できる。According to the present invention, as described above, a hydraulic composition such as cement using steelmaking slag can be provided.
【００２４】本発明の水硬性組成物は従来のセメント以
上の強度を発現できる。また、ダムなどの大型構造物の
用途に適し、従来のセメントに混合して使用することも
できる。The hydraulic composition of the present invention can exhibit strength higher than that of conventional cement. Further, it is suitable for use in large structures such as dams, and can be used by mixing with conventional cement.
【図１】トリエタノールアミンを用いたときの圧縮強度
の経時変化を示す図である。FIG. 1 is a view showing a change with time in compressive strength when using triethanolamine.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平９−110510（ＪＰ，Ａ) 特開 平７−81987（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 7/147 C04B 7/153 C09K 3/00 108 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-110510 (JP, A) JP-A-7-81987 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C04B 7/147 C04B 7/153 C09K 3/00 108
Claims (6)
液とが混練された製鋼系スラグを用いた水硬性組成物。1. A hydraulic composition using a steelmaking slag obtained by kneading a steelmaking slag and an aqueous solution containing a chelating agent.
た製鋼系スラグである請求項１に記載の製鋼系スラグを
用いた水硬性組成物。2. The hydraulic composition according to claim 1, wherein the steelmaking slag is an aged steelmaking slag.
ミン、トリイソプロパノールアミン、フェノールの１種
または２種以上の混合物である請求項１または請求項２
に記載の製鋼系スラグを用いた水硬性組成物。3. The chelating agent according to claim 1, wherein the chelating agent is one or a mixture of two or more of triethanolamine, triisopropanolamine, and phenol.
2. A hydraulic composition using the steelmaking slag according to 1.).
ート化剤の濃度が０．０００５ｗｔ％以上である請求項
１から請求項３のいずれか１項に記載の製鋼系スラグを
用いた水硬性組成物。4. The hydraulic property using the steelmaking slag according to claim 1, wherein the concentration of the chelating agent in the aqueous solution containing the chelating agent is 0.0005 wt% or more. Composition.
ｃｍ2 ／ｇ以上である請求項１から請求項４のいずれか
１項に記載の製鋼系スラグを用いた水硬性組成物。5. The specific surface area of the steelmaking slag is 1000.
hydraulic composition using steel slag according to any one of claims 1 to 4 is cm 2 / g or more.
レート化剤を含む水溶液が５〜５０重量部である請求項
１または請求項５のいずれか１項に記載の製鋼系スラグ
を用いた水硬性組成物。6. The water using the steelmaking slag according to claim 1, wherein the aqueous solution containing a chelating agent is 5 to 50 parts by weight based on 100 parts by weight of the steelmaking slag. Hard composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17940897A JP3319346B2 (en) | 1997-07-04 | 1997-07-04 | Hydraulic composition using steelmaking slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17940897A JP3319346B2 (en) | 1997-07-04 | 1997-07-04 | Hydraulic composition using steelmaking slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1121154A JPH1121154A (en) | 1999-01-26 |
| JP3319346B2 true JP3319346B2 (en) | 2002-08-26 |
Family
ID=16065352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17940897A Expired - Fee Related JP3319346B2 (en) | 1997-07-04 | 1997-07-04 | Hydraulic composition using steelmaking slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3319346B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI555587B (en) * | 2014-09-18 | 2016-11-01 | 呂東璇 | A method of solving the expansion of reductive slag |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100451821B1 (en) * | 1999-11-12 | 2004-10-08 | 주식회사 포스코 | Improvement Method of Incipient Strength of Concrete Using BF Slag Cement |
| CN100344569C (en) * | 2005-12-22 | 2007-10-24 | 武汉理工大学 | High efficient wide-spectrum sulfide resistant gelled material and preparation process thereof |
| KR20210142121A (en) * | 2019-03-21 | 2021-11-24 | 타타 스틸 이즈무이덴 베.뷔. | Method for manufacturing high-performance steel slag-based building products |
| CN110183120B (en) * | 2019-05-13 | 2021-08-17 | 中冶武汉冶金建筑研究院有限公司 | Method for producing cement active admixture by using undisturbed electrolytic manganese slag and steel slag tail mud |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0781987A (en) * | 1993-09-17 | 1995-03-28 | Mitsubishi Materials Corp | Production of color aggregate |
| JP3549644B2 (en) * | 1995-10-17 | 2004-08-04 | 電気化学工業株式会社 | Cement composition |
-
1997
- 1997-07-04 JP JP17940897A patent/JP3319346B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI555587B (en) * | 2014-09-18 | 2016-11-01 | 呂東璇 | A method of solving the expansion of reductive slag |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1121154A (en) | 1999-01-26 |
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