JPS63186148A - Testing method for expansion coefficient of slag - Google Patents
Testing method for expansion coefficient of slagInfo
- Publication number
- JPS63186148A JPS63186148A JP1626887A JP1626887A JPS63186148A JP S63186148 A JPS63186148 A JP S63186148A JP 1626887 A JP1626887 A JP 1626887A JP 1626887 A JP1626887 A JP 1626887A JP S63186148 A JPS63186148 A JP S63186148A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- expansion
- lid
- steam
- test
- 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 52
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 7
- 238000010998 test method Methods 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
【発明の詳細な説明】
発明の目的
〔産業上の利用分野〕
本発明はアーク炉等から排出させるスラグの膨張試験方
法の改良に関し、詳細には短時間でスラカ′のＩＩＡ；
２区尤誼穀Ｊブへス贋λＩ仝す辻ノー間ナス〔従来の
技術〕
電気炉から排出されるスラグの多くは適度の大きさに破
砕され、アスフ、アルドの骨材や道路舗装用路盤材とし
て利用されている。[Detailed Description of the Invention] Object of the Invention [Field of Industrial Application] The present invention relates to an improvement in a method for testing the expansion of slag discharged from an arc furnace, etc., and more particularly, it relates to an improvement in a method for testing the expansion of slag discharged from an arc furnace, etc.
Most of the slag discharged from electric furnaces is crushed to a suitable size and used as aggregate for ASF and Aldo and for road paving. It is used as a roadbed material.
前記スラグは鋼の酸化楕棟期に発生する。スラグ（以後
酸化スラグと称す）と還元精錬により発生スラグ（以後
還元スラグと称す）の２種類があり、通常これら２種類
のスラグは混合して利用される。The slag is generated during the oxidation stage of steel. There are two types of slag: slag (hereinafter referred to as oxidized slag) and slag generated by reduction smelting (hereinafter referred to as reduced slag), and these two types of slag are usually used in combination.
しかし還元スラグはフリーＣａＯを少量含み、これが吸
水して体積膨張するから、電気炉から排出され、破砕後
適当な期間屋外へ放置し、（通常エージングと称される
。）体積膨張ないしは体積変化を完了した後に路盤材等
に利用される。However, reduced slag contains a small amount of free CaO, which expands in volume when it absorbs water. Therefore, it is discharged from the electric furnace and left outdoors for an appropriate period of time after being crushed (usually called aging) to allow for volume expansion or volume change. After completion, it will be used as roadbed material, etc.
スラグの膨張を確認する方法として、８０’Ｃの温水中
で行う膨張試験方法（８０°Ｃ水浸膨張試験法）が多用
されている。As a method for checking the expansion of slag, an expansion test method conducted in 80'C hot water (80°C water immersion expansion test method) is often used.
酸化スラグと還元スラグを混合し、たスラグを前記膨張
試験法により試験した場合２〜３ケ月間要する。When oxidized slag and reduced slag are mixed and the resulting slag is tested by the expansion test method described above, it takes 2 to 3 months.
特に取鍋精錬炉（Ｌ、Ｆ、）で鋼の強還元精錬に供され
たスラグは塩基度が高く従ってＣａ０分も多いから、た
とえ酸化スラグとの混合体であっても、８０℃水浸膨張
法により体積変化の終点を確認するためには６ケ月以上
にも及ぶ。In particular, the slag that has been subjected to strong reduction refining of steel in ladle refining furnaces (L, F,) has a high basicity and therefore a high Ca0 content, so even if it is a mixture with oxidized slag, it is difficult to immerse it in water at 80°C. It takes more than 6 months to confirm the end point of volume change using the expansion method.
すなわち少なくとも半年の試験期間を要するわけである
。In other words, a test period of at least half a year is required.
試験期間が長いため、工程管理が煩雑になり、また試験
機の基数も多数備える必要がある。Since the testing period is long, process control becomes complicated and a large number of testing machines must be provided.
従って短時間でスラグ膨張試験を完了する方法の出現が
望まれていた。Therefore, it has been desired to develop a method for completing the slag expansion test in a short period of time.
上記したスラグ膨張試験期間を大巾に短縮するところに
ある。The aim is to significantly shorten the period of the slag expansion test mentioned above.
発明の構成
〔問題を解決するための手段〕
本発明によるスラグ膨張試験は飽和蒸気中で行うことに
意義を有する。Structure of the Invention [Means for Solving the Problem] It is significant that the slag expansion test according to the present invention is conducted in saturated steam.
すなわちスラグ収納容器とスラグを収納した前記容器の
上面に蓋が設けられ、前記蓋に建設され且前記スラグの
膨張を測定可能に配置した測定用具からなるスラグ膨張
試験機を用いて、飽和蒸気中でスラグの膨張試験を行う
ことである。That is, using a slag expansion tester consisting of a slag storage container and a lid provided on the upper surface of the container containing slag, and a measuring tool installed on the lid and arranged to be able to measure the expansion of the slag, The purpose is to conduct a slag expansion test.
また、本発明方法をスラグの塩基度（Ｃａｏ ／ ５ｉ
０２ ）が３．０以上の強還元精錬に供したスラグに適
用した場合意義が大きい。In addition, the method of the present invention can be used to determine the basicity of slag (Cao/5i
02) is significant when applied to slag subjected to strong reduction refining of 3.0 or more.
飽和蒸気を用いるのは水蒸気中の水分量を一定に保つた
めである。The reason why saturated steam is used is to keep the moisture content in the steam constant.
蒸気の圧力は２〜５ｋｇｆ／ｃ＋＋Ｉとすることが好ま
しい、２ｋｇｆ／ｃＪ未満では試験スラグへの蒸気の浸
透がおそく、５ｋｇｆ／ｃｎ！以上としてもさほど効果
が上がらない。The steam pressure is preferably 2 to 5 kgf/c++I; if it is less than 2 kgf/cJ, steam penetration into the test slag is slow, and the pressure is 5 kgf/cn! Even if it is more than that, it will not be very effective.
以下本発明を実施例に基づいて説明する。The present invention will be explained below based on examples.
第１図は本発明に用いた試験Ｒ（１）の１既略図である
。FIG. 1 is a schematic diagram of test R(1) used in the present invention.
スラグ（Ａ）は鉄製からなる容器（２）に収納され、蒸
気浸入穴（３）をもったＭ（４）がされる。前記蓋（４
）はスラグ（Ａ）の膨張・収縮に応じて容器（２）の内
側をスライドして上下する。前記蓋（４）はダイヤルゲ
ージ（５）に連結され、蓋（４）の上下化（スラグ（Ａ
）の膨張又は収縮代）はダイヤルゲージ（５）により読
み取る。パイプ（６）は図示しない蒸気供給源に連絡さ
れ、スラグ（Ａ）の膨張試験中は飽和蒸気が供給される
。パイプ（７）は水滴排出口であり、（８）は前記蒸気
の圧力測定用ゲージである。The slag (A) is stored in a container (2) made of iron, and an M (4) with a steam infiltration hole (3) is formed. The lid (4
) slides inside the container (2) and moves up and down according to the expansion and contraction of the slug (A). The lid (4) is connected to a dial gauge (5), and the lid (4) is raised and lowered (slug (A)
) is read by the dial gauge (5). The pipe (6) is connected to a steam supply source (not shown), and saturated steam is supplied during the expansion test of the slag (A). Pipe (7) is a water droplet outlet, and (8) is a gauge for measuring the pressure of the steam.
第２図に前記した試験方法を用いて実施したスラグ膨張
試験結果を示す。第２図から明らかなように、水浸膨張
法（８０℃）では試験期間６ケ月を要するような高塩基
度スラグを混合したもの（図中Ｏ印）でも本発明法によ
れば試験期間はほぼ１０日（図中・印）である。FIG. 2 shows the results of a slag expansion test conducted using the test method described above. As is clear from Fig. 2, even when mixed with high basicity slag (marked O in the figure), which would require a test period of 6 months using the water immersion expansion method (80°C), the test period according to the method of the present invention is It is approximately 10 days (marked in the figure).
尚本発法に用いた蒸気の圧力は２．５ ｋｇ ｆ ／
ｃｔａである。The pressure of the steam used in this method was 2.5 kgf/
It is cta.
本発明を用いてスラグの膨張試験を行えば試験期間は大
巾に短縮される。If a slag expansion test is performed using the present invention, the test period can be greatly shortened.
特に高塩基度スラグを混合したスラグに適用した場合意
義は大きい。This is particularly significant when applied to slag mixed with high basicity slag.
第１図は本発明に用いた試験機であり、第２図は本発明
の実施例における効果を示す図である。
Ａニスラグ、 １：試験機、 ２ニスラグ宕器４：
蓋 、 ５：ダイヤルゲージ、
６：蒸気供給用パイプFIG. 1 shows a test machine used in the present invention, and FIG. 2 is a diagram showing the effects of an embodiment of the present invention. A Nislug, 1: Testing machine, 2 Nislug tester 4:
Lid, 5: Dial gauge, 6: Steam supply pipe
Claims (2)
面に蓋が設けられ、前記蓋に連設され且前記スラグの膨
張を測定可能に配置した測定用具からなるスラグ膨張試
験機を用いて、飽和蒸気中でスラグの膨張試験を行うこ
とを特徴とするスラグ膨張試験方法。(1) Using a slag expansion tester consisting of a slag storage container, a lid provided on the top surface of the container containing slag, and a measuring tool connected to the lid and arranged to be able to measure the expansion of the slag, A slag expansion test method characterized by conducting a slag expansion test in saturated steam.
＿２）が３．０以上の強還元精錬に供したスラグを混合
したものである特許請求の範囲第１項の試験方法。(2) Basicity of slag to be tested for expansion (Cao/Sio
_2) is a mixture of slag subjected to strong reduction refining of 3.0 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1626887A JPS63186148A (en) | 1987-01-28 | 1987-01-28 | Testing method for expansion coefficient of slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1626887A JPS63186148A (en) | 1987-01-28 | 1987-01-28 | Testing method for expansion coefficient of slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63186148A true JPS63186148A (en) | 1988-08-01 |
Family
ID=11911801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1626887A Pending JPS63186148A (en) | 1987-01-28 | 1987-01-28 | Testing method for expansion coefficient of slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63186148A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590476A (en) * | 2012-02-10 | 2012-07-18 | 浙江大学 | Vertisol expansion coefficient measurement device and application thereof |
| CN102621293A (en) * | 2012-03-29 | 2012-08-01 | 吉林省交通科学研究所 | Test instrument for shrinkage deformation of pavement semi-rigid material |
| WO2012104653A1 (en) * | 2011-02-03 | 2012-08-09 | Harsco Metals Group Limited | Slag expansion testing machine and related method |
| KR101262368B1 (en) * | 2004-12-20 | 2013-05-08 | 재단법인 포항산업과학연구원 | Apparatus for simulating steam aging and for testing expansion ratio of slag aggregate |
| CN105334306A (en) * | 2015-10-23 | 2016-02-17 | 西安近代化学研究所 | Detachable sample cage for explosive volume expansion coefficient measuring device |
-
1987
- 1987-01-28 JP JP1626887A patent/JPS63186148A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101262368B1 (en) * | 2004-12-20 | 2013-05-08 | 재단법인 포항산업과학연구원 | Apparatus for simulating steam aging and for testing expansion ratio of slag aggregate |
| WO2012104653A1 (en) * | 2011-02-03 | 2012-08-09 | Harsco Metals Group Limited | Slag expansion testing machine and related method |
| CN102590476A (en) * | 2012-02-10 | 2012-07-18 | 浙江大学 | Vertisol expansion coefficient measurement device and application thereof |
| CN102590476B (en) * | 2012-02-10 | 2014-06-25 | 浙江大学 | Vertisol expansion coefficient measurement device and application thereof |
| CN102621293A (en) * | 2012-03-29 | 2012-08-01 | 吉林省交通科学研究所 | Test instrument for shrinkage deformation of pavement semi-rigid material |
| CN105334306A (en) * | 2015-10-23 | 2016-02-17 | 西安近代化学研究所 | Detachable sample cage for explosive volume expansion coefficient measuring device |
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