JP2002116199A - Slag sampler for analysis and method of sampling slag - Google Patents
Slag sampler for analysis and method of sampling slagInfo
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- JP2002116199A JP2002116199A JP2000305229A JP2000305229A JP2002116199A JP 2002116199 A JP2002116199 A JP 2002116199A JP 2000305229 A JP2000305229 A JP 2000305229A JP 2000305229 A JP2000305229 A JP 2000305229A JP 2002116199 A JP2002116199 A JP 2002116199A
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- slag
- sampler
- analysis
- analytical
- slag sampler
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- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、金属の精錬過程に
おいて生ずるスラグの分析試料の調整方法に係り、特に
鉄鋼の精錬工程において生ずるスラグをオンラインで分
析するために採取する分析用スラグサンプラおよびスラ
グ採取方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preparing an analytical sample of slag generated in a metal refining process, and more particularly to an analytical slag sampler and a slag sampled for online analysis of slag generated in a steel refining process. Regarding the sampling method.
【０００２】[0002]
【従来の技術】鉄鋼などの精錬制御精度向上に伴い、目
標組成の金属を得るためスラグの組成を制御する技術が
重要である。そのため精錬過程で迅速に且つ精度良くス
ラグを分析できる技術の開発が重要である。従来、この
スラグ分析用試料の調整方法として信頼性の高い方法
は、ＪＩＳＭ ８２０５に規定されるガラスビード試料
調整法がある。これは、試料をホウ酸ソーダやホウ酸リ
チウムの溶融剤をスラグなど酸化物と混合し、白金ルツ
ボ中で１０００〜１１５０℃の範囲で所定の時間攪拌し
ながら、均一に確実に溶解せしめ、その後、冷却するこ
とにより平坦面を有するガラスビード試料を調整するも
のである。2. Description of the Related Art As the refining control of steel or the like is improved, a technique for controlling the composition of slag to obtain a metal having a target composition is important. Therefore, it is important to develop a technology that can quickly and accurately analyze slag in the refining process. Conventionally, a highly reliable method for preparing a slag analysis sample is a glass bead sample preparation method defined in JIS M8205. This means that the sample is mixed with a sodium borate or lithium borate flux and an oxide such as slag, and uniformly and reliably dissolved in a platinum crucible while stirring at a temperature of 1000 to 1150 ° C. for a predetermined time. By cooling, a glass bead sample having a flat surface is prepared.
【０００３】この方法は、試料を一旦溶解するため、元
々の試料の粒径や共存元素の影響などマトリックス効果
を除去できるため、十分な精度で分析結果を得ることが
できる。しかしながら、試料の粉砕、溶融剤秤量、混
合、そして上述した加熱溶融過程、冷却過程など複数の
過程を経るため分析結果が得られるまで４０分から６０
分近く必要となるため、通常の精錬工程の十分〜数十分
の間に情報を返すことができない。In this method, since the sample is once dissolved, matrix effects such as the influence of the particle size of the original sample and the coexisting elements can be removed, and the analysis result can be obtained with sufficient accuracy. However, since the sample is subjected to a plurality of processes such as pulverization of the sample, weighing of the melt, mixing, and the above-mentioned heating / melting process and cooling process, it takes 40 minutes to 60 minutes until the analysis result is obtained.
Since information is required in about a minute, it is not possible to return information during a period of enough to several tens of minutes in a normal refining process.
【０００４】そのため、より迅速に分析値を得るため
に、試料を溶解せず、粉砕した形で圧縮成型する粉末ブ
リケット法などが用いられる。この方法は、溶解過程な
どがないため、分析時間は２０分ほどにまで短縮できる
が、通常の精錬工程にかかる時間内に分析情報を返すの
は困難であり、分析精度、分析時間の点で工程管理分析
手法としては不充分であった。[0004] Therefore, in order to obtain an analysis value more quickly, a powder briquette method in which a sample is not dissolved but compression-molded in a pulverized form is used. In this method, the analysis time can be reduced to about 20 minutes because there is no dissolution process, but it is difficult to return the analysis information within the time required for a normal refining process, and the analysis accuracy and the analysis time are low. The process control analysis method was insufficient.
【０００５】このような問題を解決するために、特開平
１０‐２６７９１５号公報には、長さが１５０ｍｍ以上
で、且つ、容積Ｖ、表面積Ａとして、Ｖ／Ａが１０以上
の容積を持つ柱状体サンプラをスラグ層に浸漬し引き上
げた後、固化したスラグを剥がし取り、スラグサンプラ
に接していた面を蛍光Ｘ線分析に供する技術が開示され
ている。In order to solve such a problem, Japanese Patent Application Laid-Open No. Hei 10-267915 discloses a columnar shape having a length of 150 mm or more and a volume V and a surface area A having a volume of V / A of 10 or more. A technique is disclosed in which a body sampler is immersed in a slag layer and pulled up, then the solidified slag is peeled off, and a surface in contact with the slag sampler is subjected to X-ray fluorescence analysis.
【０００６】また、特開平１１‐３０４６７５号公報に
は、急冷体の長さとして５００ｍｍ以上を好ましいとす
る平滑な面を有する中空角柱状急冷体を用いて溶融スラ
グから蛍光Ｘ線分析用試料を採取する技術が開示されて
いる。特開平１１‐３０４６７５号および前述した特開
平１０‐２６７９１５号の両方法とも精錬過程で激しく
揺動しているスラグを確実にサンプリングするために、
急冷体の上方一部を溶融スラグ面から出すことにより、
スラグの初期凝固点をつくることを推奨しており、必然
的にサンプラの長さを、１５０ｍｍ以上、好ましくは５
００ｍｍとせざるを得なくなる。Japanese Unexamined Patent Application Publication No. 11-304675 discloses that a sample for fluorescent X-ray analysis is obtained from a molten slag using a hollow prismatic quenching body having a smooth surface, which is preferably 500 mm or more in length. A technique for sampling is disclosed. In both methods of JP-A-11-304675 and JP-A-10-267915 described above, in order to reliably sample slag that violently swings in the refining process,
By taking out the upper part of the quenched body from the molten slag surface,
It is recommended that an initial freezing point of the slag be created, and the length of the sampler must be at least 150 mm, preferably 5 mm.
It must be set to 00 mm.
【０００７】そのため、スラグサンプラ重量が大となり
作業性に支障を来すとともに、スラグサンプラの上下間
での急冷効果に差が発生し、引いては同一面内での繰り
返し分析誤差が拡大する一因となる。また、スラグサン
プラサイズが大きいために、従来使用されている溶鋼採
取用のサンプラとは別に専用のサンプリングを行なわざ
るを得なくなり、時間短縮、コスト改善を行う上で問題
となる。[0007] Therefore, the weight of the slag sampler increases, which impairs the workability, and a difference occurs in the quenching effect between the upper and lower sides of the slag sampler, thereby increasing the repetitive analysis error in the same plane. Cause. In addition, since the size of the slag sampler is large, dedicated sampling must be performed separately from the sampler used for collecting molten steel, which is conventionally used, which is a problem in reducing time and improving cost.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、このような
従来技術の有する問題点を解決し、鉄鋼など溶融金属の
製錬工程において、スラグを確実、迅速、正確に採取
し、分析に供することを可能にする分析用スラグサンプ
ラおよびスラグ採取方法の提供を課題とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art. In the smelting process of molten metal such as iron and steel, slag is reliably, quickly and accurately sampled and provided for analysis. An object of the present invention is to provide a slag sampler for analysis and a slag sampling method that enable the analysis.
【０００９】[0009]
【課題を解決するための手段】本発明は、上記課題を解
決するために、スラグを付着採取する冷却面に、穴部、
凸部の一方もしくは両方および平滑部を有することを特
徴とするスラグサンプラを溶融スラグに浸漬後、直ちに
引き上げることにより、穴部または凸部に生じた凝固開
始点を起点として多くのスラグを平坦面に確実に付着せ
しめ、これで得られた平滑急冷面を分析面として供する
こととするものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a cooling surface on which slag is adhered and collected, wherein a hole,
Immediately after immersing the slag sampler having one or both of the convex portions and the smooth portion in the molten slag, the slag sampler is immediately pulled up, so that many slags are formed on the flat surface starting from the solidification starting point generated in the holes or the convex portions. And the smooth and quenched surface obtained in this manner is used as an analysis surface.
【００１０】すなわち、本発明がその要旨とするところ
は以下の通りである。 （１）スラグを付着採取する冷却面に、穴部、凸部の一
方もしくは両方および平滑部を有することを特徴とする
分析用スラグサンプラ。 （２）穴部または凸部の大きさが、分析用スラグサンプ
ラの長さ方向に３〜２０ｍｍ、分析用スラグサンプラの
幅方向に３ｍｍ〜分析用スラグサンプラの幅未満である
ことを特徴とする前記（１）に記載の分析用スラグサン
プラ。That is, the gist of the present invention is as follows. (1) A slag sampler for analysis characterized in that one or both of a hole and a convex portion and a smooth portion are provided on a cooling surface on which slag is attached and collected. (2) The size of the hole or the projection is 3 to 20 mm in the length direction of the analysis slag sampler, and 3 mm in the width direction of the analysis slag sampler to less than the width of the analysis slag sampler. The analytical slag sampler according to (1).
【００１１】（３）平滑部が直径５ｍｍ以上の円を内在
できることを特徴とする前記（１）または（２）に記載
の分析用スラグサンプラ。 （４）分析用スラグサンプラの長さが５〜５００ｍｍで
あることを特徴とする前記（１）〜（３）のいずれか１
つに記載の分析用スラグサンプラ。 （５）分析用スラグサンプラの厚さが３〜５ｍｍである
ことを特徴とする前記（１）〜（４）のいずれか１つに
記載の分析用スラグサンプラ。(3) The analytical slag sampler according to (1) or (2), wherein the smooth portion can include a circle having a diameter of 5 mm or more. (4) Any one of the above (1) to (3), wherein the length of the slag sampler for analysis is 5 to 500 mm.
The slag sampler for analysis described in any one of the above. (5) The analytical slag sampler according to any one of (1) to (4), wherein the analytical slag sampler has a thickness of 3 to 5 mm.
【００１２】（６）前記（１）〜（５）のいずれか１つ
に記載の分析用スラグサンプラを使用し、該スラグサン
プラを溶融スラグに浸漬して、１０秒以内に引き上げ、
付着した凝固スラグを剥離して、急冷された平滑面を分
析面として供することを特徴とする分析用スラグ採取方
法。(6) Using the analytical slag sampler according to any one of the above (1) to (5), immersing the slag sampler in the molten slag and pulling it up within 10 seconds;
A method for collecting slag for analysis, characterized in that solidified slag adhered is peeled off and a quenched smooth surface is used as an analysis surface.
【００１３】[0013]
【発明の実施の形態】以下本発明をさらに詳細に説明す
る。本発明では、スラグを付着採取する冷却面に、穴
部、凸部の一方もしくは両方および平滑部を有する分析
用スラグサンプラを溶融スラグに浸漬後、直ちに引き上
げて分析用スラグを採取する。穴部に侵入し、または、
凸部に接触して、凝固したスラグが初期凝固点として、
多くのスラグを平滑部に確実に付着せしめ、付着したス
ラグの該平滑部に接する平滑な急冷面を分析面として使
用する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. In the present invention, an analysis slag sampler having one or both of a hole and a projection and a smooth portion is immersed in a molten slag on a cooling surface to which the slag is attached and collected, and then immediately pulled up to collect the analysis slag. Penetrate the hole, or
The solidified slag that comes into contact with the protrusions as the initial solidification point,
A large amount of slag is securely attached to the smooth portion, and the smooth quenched surface of the attached slag that is in contact with the smooth portion is used as an analysis surface.
【００１４】図１は本発明に係る分析用スラグサンプラ
の一例を示した斜視図で、図２は図１に示す分析用スラ
グサンプラの模式図である。穴部３を有するスラグサン
プラ１は、凸部となる取付ボルト４を用いて溶鋼サンプ
ラ本体５の中央部位に付属させることが可能である。ス
ラグサンプラ本体のみでスラグを採取することも可能で
あるが、スラグサンプラをコンパクト化することによ
り、このように従来使用されている溶鋼サンプラに付属
させて使用することが可能となり、溶鋼採取とは別に分
析用スラグのみを採取する必要がなくなる。FIG. 1 is a perspective view showing an example of an analytical slag sampler according to the present invention, and FIG. 2 is a schematic view of the analytical slag sampler shown in FIG. The slag sampler 1 having the hole 3 can be attached to the central portion of the molten steel sampler main body 5 by using a mounting bolt 4 serving as a projection. It is possible to collect slag only with the slag sampler itself, but by making the slag sampler compact, it becomes possible to attach it to the conventionally used molten steel sampler and use it. There is no need to separately collect only slag for analysis.
【００１５】図３は、穴部３に凝固スラグ７が保持され
る様子を示す断面図である。スラグサンプラ１に貫通さ
せた穴部３の中に溶融スラグが侵入すると、この中から
凝固が開始し、この凝固開始点８を起点として鍵穴状に
入りこんだスラグが下方の平滑部２に接触した急冷面９
を形成しつつ、穴部３から垂れ下がる形となる結果、凝
固スラグ７全体が支持され、脱落することなく確実に採
取される。穴部３ではなく凸部４を設けた場合も、凸部
４を起点に凝固し凝固スラグ７は凸部４に垂れ下がって
支持されることになるので全く同様の効果が得られる。
穴部３は必ずしも貫通していなくてもよく凹部としても
よい。FIG. 3 is a sectional view showing a state in which the solidified slag 7 is held in the hole 3. When molten slag enters the hole 3 penetrated through the slag sampler 1, solidification starts from inside the slag, and the slag that has entered the keyhole shape starting from the solidification start point 8 contacts the lower smooth portion 2. Quench surface 9
As a result, the solidified slag 7 is supported as a whole and hangs down from the hole 3 so that the solidified slag 7 is collected without falling off. Also in the case where the convex portion 4 is provided instead of the hole portion 3, the same effect can be obtained because the solidified slag 7 is solidified from the convex portion 4 as a starting point and hangs down on the convex portion 4 to be supported.
The hole 3 does not necessarily have to penetrate and may be a recess.
【００１６】図４は、平滑部２に設けた穴部３が、スラ
グ採取量増加に及ぼす影響を示した図である。縦軸は、
同一面積の平滑部２のみによるスラグ採取重量に対する
比率である。図に示したように、穴部３を持たない平坦
な平滑面２のみの場合と比較して、穴部３を設けること
によりスラグ採取重量を約２倍に増加させることができ
ている。同様に凸部を設けてもスラグ採取重量は約２倍
となる。このように本発明のスラグサンプラ１は平滑部
２のみの場合に比べて、面積当たり倍量のスラグを付着
させることができるので、コンパクトな構造で確実にス
ラグを採取することが可能となる。FIG. 4 is a diagram showing the effect of the hole 3 provided in the smoothing portion 2 on the increase in slag collection amount. The vertical axis is
It is a ratio to the slag collection weight by only the smooth portion 2 having the same area. As shown in the drawing, the provision of the holes 3 allows the slag collection weight to be increased about twice as compared with the case of only the flat smooth surface 2 having no holes 3. Similarly, even if the projections are provided, the slag collection weight is about twice as large. As described above, the slag sampler 1 of the present invention can apply twice the amount of slag per area as compared with the case where only the smooth portion 2 is used, so that slag can be reliably collected with a compact structure.
【００１７】この穴部または凸部の大きさはスラグサン
プラの長さ方向すなわち垂直方向に３〜２０ｍｍ、スラ
グサンプラの幅方向すなわち水平方向に３ｍｍ〜スラグ
サンプラ幅未満とすることが好ましい。スラグサンプラ
の垂直方向の穴の直径が３ｍｍ未満では、溶融スラグが
短時間に容易に穴部中に侵入することは難しい。穴の直
径が２０ｍｍを超過しても、凝固スラグの上方に空隙を
作るためスラグ採取量増加に寄与しない。凸部の場合
は、３ｍｍ未満では熱により容易に変形が生じ、２０ｍ
ｍを超過してもスラグサンプラ内で面積を占めるだけで
平滑面を持つスラグ採取量に寄与しない。It is preferable that the size of the hole or the protrusion is 3 to 20 mm in the length direction of the slag sampler, that is, the vertical direction, and 3 mm to less than the width of the slag sampler, that is, the horizontal direction. If the diameter of the vertical hole of the slag sampler is less than 3 mm, it is difficult for the molten slag to easily enter the hole in a short time. If the diameter of the hole exceeds 20 mm, a void is formed above the solidified slag, so that it does not contribute to an increase in the amount of slag collected. In the case of a convex part, if it is less than 3 mm, it is easily deformed by heat,
Even if it exceeds m, it only occupies the area in the slag sampler and does not contribute to the amount of slag having a smooth surface.
【００１８】スラグサンプラの水平方向の穴の直径が３
ｍｍ未満では、溶融スラグが短時間に容易に穴中に侵入
することは難しい。凸部の場合は熱により容易に変形が
生じる。スラグサンプラの水平方向の穴の大きさは、分
析用平滑面の増加に寄与するためスラグサンプラの幅未
満まで大きくすることができる。ただし、穴部の左右の
部位が極端に細くなると変形しやすくなるので、水平方
向の直径はスラグサンプラ幅−３ｍｍを限度とすること
が好ましい。また、穴部もしくは凸部の形状は丸である
必要はなく、楕円、多角形、スリット状など形状は特に
限定しない。The horizontal hole diameter of the slag sampler is 3
If it is less than mm, it is difficult for the molten slag to easily enter the hole in a short time. In the case of a convex portion, deformation easily occurs due to heat. The size of the horizontal holes in the slag sampler can be increased to less than the width of the slag sampler to contribute to an increase in the smooth surface for analysis. However, when the left and right portions of the hole are extremely thin, the hole is easily deformed. Therefore, the horizontal diameter is preferably limited to a slag sampler width of -3 mm. In addition, the shape of the hole or the protrusion does not need to be round, and the shape such as an ellipse, a polygon, or a slit is not particularly limited.
【００１９】スラグの分析面を汎用的な分析方法に供す
ることを考慮すると、スラグサンプラの平滑面は直径５
ｍｍ以上の円を内在できることが望ましい。スラグの分
析に用いる蛍光エックス線分析などの汎用的な分析方法
において使用される分析面として直径５ｍｍφ以上が望
ましいからである。直径５ｍｍφ以上の平滑面があれ
ば、ほとんどの汎用的な分析方法に問題なく供すること
ができ、高精度な分析が可能である。なお、以上の限定
を満せば、穴部もしくは凸部の個数については特に限定
するものではなく、１個又は２個以上でもかまわない。Considering that the analysis surface of the slag is subjected to a general-purpose analysis method, the smooth surface of the slag sampler has a diameter of 5 mm.
It is desirable that a circle of not less than mm can be included. This is because a diameter of 5 mmφ or more is desirable as an analysis surface used in a general-purpose analysis method such as fluorescent X-ray analysis used for slag analysis. If there is a smooth surface with a diameter of 5 mmφ or more, it can be used for most general analysis methods without any problem, and high-precision analysis is possible. In addition, if the above limitation is satisfied, the number of holes or protrusions is not particularly limited, and may be one or two or more.
【００２０】スラグサンプラの長さは５〜５００ｍｍが
望ましい。スラグサンプラ長さを５ｍｍ未満にすると分
析面が確保できなくなる。また、長さが５００ｍｍを超
えると面内繰り返し分析誤差が拡大する。より望ましく
は、分析の再現性が良好であり、かつ、十分な分析面積
を確保できる５０〜２００ｍｍとするのがよい。図５
は、スラグサンプラ長さと同一面内繰り返し分析誤差の
関係を示したものであるが、長さ３００ｍｍのものと１
５０ｍｍに示した結果からわかるように、長さは１５０
ｍｍタイプのほうが、同一面内での繰り返し分析誤差は
小さくなる。この理由は、長さが長くなるほど、スラグ
サンプラの上下面での熱の伝達具合に差が発生し、急冷
効果の均一性を悪化させているためである。The length of the slag sampler is preferably 5 to 500 mm. If the length of the slag sampler is less than 5 mm, the analysis surface cannot be secured. If the length exceeds 500 mm, the in-plane repetitive analysis error increases. More preferably, the thickness is set to 50 to 200 mm so that the reproducibility of the analysis is good and a sufficient analysis area can be secured. FIG.
Shows the relationship between the slag sampler length and the in-plane repetition analysis error.
As can be seen from the results shown at 50 mm, the length is 150 mm.
The mm type has a smaller repeated analysis error in the same plane. The reason for this is that as the length increases, the degree of heat transfer between the upper and lower surfaces of the slag sampler is different, and the uniformity of the quenching effect is deteriorated.
【００２１】スラグサンプラの厚みは、発明者らの検討
の結果より、３ｍｍ未満では板の反りが発生するため平
滑面を得ることが困難である。３ｍｍ以上の厚みがあれ
ば、１０秒程度のスラグへの浸漬には十分に耐えられ
る。５ｍｍの厚みがあれば急冷効果が向上するが、これ
を超える厚みは急冷効果ひいては分析精度の向上には寄
与しないため、厚みは３〜５ｍｍの厚みがよい。According to the results of studies by the present inventors, if the thickness of the slag sampler is less than 3 mm, it is difficult to obtain a smooth surface due to warpage of the plate. If it has a thickness of 3 mm or more, it can sufficiently withstand immersion in slag for about 10 seconds. If the thickness is 5 mm, the quenching effect is improved. However, since the thickness exceeding this does not contribute to the improvement of the quenching effect and thus the analysis accuracy, the thickness is preferably 3 to 5 mm.
【００２２】スラグサンプラの素材はスラグとの接触に
より溶融や変形が生じない必要があるが、溶鋼の中では
最も温度の低いスラグに高々１０秒程度接触するだけで
あり、特に荷重がかかるわけでもないから、耐熱性を考
慮するに越したことはないが通常の鉄鋼材料でも十分に
使用に耐える。スラグ採取方法としては、前記（１）〜
（５）のいずれか１つに記載の分析用スラグサンプラを
使用し、該スラグサンプラを溶融スラグ層に浸漬して、
１０秒以内に引き上げ、付着したスラグを衝撃剥離し
て、急冷された平滑面を分析面として供することを特徴
とする。It is necessary that the material of the slag sampler does not melt or deform due to contact with the slag. However, it only contacts the slag with the lowest temperature among molten steel for at most 10 seconds, and especially when a load is applied. There is no need to consider heat resistance, but ordinary steel materials can withstand use. As the slag collecting method, the above (1) to
(5) using the slag sampler for analysis according to any one of (1) and (2), immersing the slag sampler in a molten slag layer;
It is characterized in that it is pulled up within 10 seconds, the attached slag is impact-peeled, and the quenched smooth surface is used as an analysis surface.
【００２３】スラグサンプラをスラグに浸漬するとき
は、１０秒を超えるとスラグサンプラ本体が完全に熱せ
られて急冷効果を得ることが困難となる。望ましくは数
秒以内で引き上げることにより、急冷効果を最大限とす
ることができる。引き上げた後凝固スラグを剥離させ
る。剥離の方法はハンマーなどによる打撃を与え、衝撃
により剥離させる方法がよい。衝撃の加え方としては、
スラグサンプラの側面から平滑面に平行方向に衝撃を与
えれば、スラグとスラグサンプラ表面にズレを生じさせ
ることにより、容易に平滑スラグ面を得ることができ
る。また、この場合、穴部に侵入したスラグは横方向の
力を受けるため採取スラグから切り離され、採取スラグ
に付着したままとなることは少ない。もし、一部、凸部
として残っても容易に除去できるため、分析平滑面とし
て供するときの障害とはならない。When the slag sampler is immersed in the slag, if it exceeds 10 seconds, the slag sampler body is completely heated, and it is difficult to obtain a rapid cooling effect. Preferably, the quenching effect can be maximized by pulling up within a few seconds. After lifting, the solidified slag is peeled off. As a method of peeling, a method of giving a hit with a hammer or the like and peeling by impact is preferable. As a way to apply a shock,
If an impact is applied from the side surface of the slag sampler in a direction parallel to the smooth surface, the slag and the surface of the slag sampler are displaced to easily obtain a smooth slag surface. Further, in this case, the slag that has entered the hole receives a lateral force, and is thus separated from the collected slag and rarely remains attached to the collected slag. If a part remains as a convex part, it can be easily removed, so that it does not become an obstacle when used as an analysis smooth surface.
【００２４】[0024]
【実施例】以下本発明を実施例により、さらに説明す
る。本発明に係る分析用スラグサンプラおよびサンプル
採取方法を用いてスラグ分析を実際に行った。実験の詳
細な実施条件は、図１に示したように、溶鋼サンプラ本
体に本発明のスラグサンプラを付属させて実施した。ス
ラグサンプラの材質は熱延鋼鈑、形状としては、厚み５
ｍｍ、横幅８０ｍｍ、垂直方向長さ１５０ｍｍとして、
上端より１０ｍｍ下方に凸部となるボルトで溶鋼サンプ
ラ本体に取り付けた。EXAMPLES The present invention will be further described below with reference to examples. Slag analysis was actually performed using the analytical slag sampler and sample collection method according to the present invention. As shown in FIG. 1, the detailed conditions of the experiment were performed by attaching the slag sampler of the present invention to the molten steel sampler body. The material of the slag sampler is hot rolled steel plate, and the shape is thickness 5
mm, width 80 mm, vertical length 150 mm,
It was attached to the molten steel sampler main body with a bolt that became a projection 10 mm below the upper end.
【００２５】また、凸部より下方に直径１０ｍｍの穴部
を４箇所に配置した。該スラグサンプラを溶融スラグ層
に浸漬して、１０秒以内に引き上げ、付着したスラグ層
を衝撃剥離して、急冷された平滑面を分析面として供し
た。本発明により採取したスラグサンプル（縦軸）と標
準値としてガラスビードを作成して分析したもの（横
軸）を、蛍光Ｘ線分析によって組成分析した塩基度（Ｃ
ａＯ／ＳｉＯ２）の値を図６に示す。傾きが１の直線に
近いほど分析精度がよい。In addition, four holes having a diameter of 10 mm were arranged below the protrusions. The slag sampler was immersed in the molten slag layer, pulled up within 10 seconds, and the attached slag layer was impact-peeled off, and the rapidly cooled smooth surface was used as an analysis surface. A slag sample (vertical axis) collected according to the present invention and a glass bead prepared as a standard value and analyzed (horizontal axis) were analyzed for basicity (C) by X-ray fluorescence analysis.
FIG. 6 shows the value of (aO / SiO2). The closer the slope is to the straight line of 1, the better the analysis accuracy.
【００２６】本発明の実施例によるスラグサンプラを用
いた時の急冷面の分析値および比較例として、急冷面の
反対側となる、スラグサンプラとの非接触面（放冷面）
を分析した場合の結果を比較すると、本発明での急冷面
の分析結果は、標準法であるガラスビード法と良好に一
致しているのがわかる。また、本発明のスラグサンプラ
を用いてもスラグサンプラに接触していない放冷面の分
析値は、偏析の影響によってＣａＯは高く、Ｓｉ０２は
低値を示すため、塩基度（ＣａＯ／ＳｉＯ２）は高めの
値となり誤差を示すことがわかる。The analysis value of the quenched surface when the slag sampler according to the embodiment of the present invention is used, and as a comparative example, the non-contact surface with the slag sampler opposite to the quenched surface (cooling surface)
Comparing the results of the analysis of, it can be seen that the analysis result of the quenched surface in the present invention is in good agreement with the glass bead method which is the standard method. In addition, even when the slag sampler of the present invention is used, the analysis value of the cooling surface that is not in contact with the slag sampler shows that CaO is high due to the influence of segregation and Si02 shows a low value, so that the basicity (CaO / SiO2) is It can be seen that the value becomes a higher value, indicating an error.
【００２７】また、本発明の方法を用いることにより、
従来少なくとも２０分を要していたスラグの組成分析を
３分以内で行うことが可能となった。Further, by using the method of the present invention,
A slag composition analysis, which conventionally required at least 20 minutes, can be performed within 3 minutes.
【００２８】[0028]
【発明の効果】本発明は溶融スラグから、操業性よく、
確実に偏析のない試料を迅速に調整できる。これによ
り、鉄鋼などの製錬工程における精錬課程のコントロー
ルをスラグ組成をもとにして行うことが可能となり精錬
精度を向上に寄与するので、本発明は産業上の価値の極
めて高い発明であるといえる。According to the present invention, the molten slag can be used with good operability.
Samples without segregation can be reliably prepared quickly. Thereby, it is possible to control the smelting process in the smelting process of steel and the like based on the slag composition, which contributes to the improvement of the smelting accuracy, so that the present invention is an invention having extremely high industrial value. I can say.
【図１】本発明に係る分析用スラグサンプラの一例を示
す斜視図である。FIG. 1 is a perspective view showing an example of an analytical slag sampler according to the present invention.
【図２】図１に示す分析用スラグサンプラの模式図であ
る。FIG. 2 is a schematic view of the analytical slag sampler shown in FIG.
【図３】本発明に係る分析用スラグサンプラの一例にお
いて、穴部に凝固スラグが保持される様子を示す断面図
である。FIG. 3 is a cross-sectional view showing a state in which solidified slag is held in a hole in an example of the analytical slag sampler according to the present invention.
【図４】穴部の有無のスラグ採取量増加に及ぼす効果を
示した図である。FIG. 4 is a view showing the effect of the presence or absence of a hole on the increase in slag collection amount.
【図５】サンプラ長さの同一面内繰り返し分析誤差に及
ぼす影響を示した図である。FIG. 5 is a diagram showing an influence of a sampler length on an in-plane repeated analysis error.
【図６】実施例における分析結果を示したものである。FIG. 6 shows an analysis result in an example.
１…スラグサンプラ ２…平滑部 ３…穴部 ４…取付ボルト（凸部） ５…溶鋼サンプラ本体 ６…紙管 ７…凝固スラグ ８…凝固開始点 ９…急冷面（分析面） DESCRIPTION OF SYMBOLS 1 ... Slag sampler 2 ... Smooth part 3 ... Hole 4 ... Mounting bolt (convex part) 5 ... Molten steel sampler main body 6 ... Paper tube 7 ... Solidified slag 8 ... Solidification start point 9 ... Quench surface (analytical surface)
フロントページの続き (72)発明者 浜田 直也 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 (72)発明者 近藤 裕之 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 Ｆターム(参考） 2G055 AA21 DA04 EA02 Continued on the front page (72) Inventor Naoya Hamada 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation Technology Development Division (72) Inventor Hiroyuki Kondo 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation F-term in the Technology Development Division (reference) 2G055 AA21 DA04 EA02
Claims (6)
凸部の一方もしくは両方および平滑部を有することを特
徴とする分析用スラグサンプラ。The cooling surface for attaching and collecting slag has a hole,
An analytical slag sampler having one or both convex portions and a smooth portion.
グサンプラの長さ方向に３〜２０ｍｍ、分析用スラグサ
ンプラの幅方向に３ｍｍ〜分析用スラグサンプラ幅未満
であることを特徴とする請求項１に記載の分析用スラグ
サンプラ。2. The size of the hole or the projection is 3 to 20 mm in the longitudinal direction of the analytical slag sampler, and 3 mm in the width direction of the analytical slag sampler to less than the analytical slag sampler width. The analytical slag sampler according to claim 1.
ることを特徴とする請求項１または２に記載の分析用ス
ラグサンプラ。3. The slag sampler for analysis according to claim 1, wherein the smooth portion can include a circle having a diameter of 5 mm or more.
０ｍｍであることを特徴とする請求項１〜３のいずれか
１項に記載の分析用スラグサンプラ。4. The slag sampler for analysis has a length of 5 to 50.
The analytical slag sampler according to any one of claims 1 to 3, wherein the slag sampler is 0 mm.
ｍであることを特徴とする請求項１〜４のいずれか１項
に記載の分析用スラグサンプラ。5. The slag sampler for analysis has a thickness of 3 to 5 m.
The analytical slag sampler according to any one of claims 1 to 4, wherein m is m.
析用スラグサンプラを使用し、該スラグサンプラを溶融
スラグに浸漬して、１０秒以内に引き上げ、付着した凝
固スラグを剥離して、急冷された平滑面を分析面として
供することを特徴とする分析用スラグ採取方法。6. The slag sampler for analysis according to claim 1, wherein the slag sampler is immersed in molten slag, pulled up within 10 seconds, and exfoliated solidified slag is removed. And providing a quenched smooth surface as an analysis surface.
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|---|---|---|---|
| JP2000305229A JP4071925B2 (en) | 2000-10-04 | 2000-10-04 | Analytical slag sampler and slag collection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000305229A JP4071925B2 (en) | 2000-10-04 | 2000-10-04 | Analytical slag sampler and slag collection method |
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| JP2002116199A true JP2002116199A (en) | 2002-04-19 |
| JP4071925B2 JP4071925B2 (en) | 2008-04-02 |
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| JP2000305229A Expired - Fee Related JP4071925B2 (en) | 2000-10-04 | 2000-10-04 | Analytical slag sampler and slag collection method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005043852B3 (en) * | 2005-09-13 | 2006-12-21 | Heraeus Electro-Nite International N.V. | Immersible probe, for use in steel processing, has sample-taking elements which have flat or concave surface facing away from immersion end and inclined to longitudinal axis in direction of end of probe body opposite immersion end |
| JP2008216171A (en) * | 2007-03-07 | 2008-09-18 | Ihi Corp | Sampling vessel and method for using the same |
| KR101185331B1 (en) | 2010-11-29 | 2012-09-26 | 현대제철 주식회사 | Method for testing slag characteristics using slag characteristics testing apparatus |
| KR20170075949A (en) * | 2015-12-24 | 2017-07-04 | 주식회사 포스코 | Protective cap of sampler and sampler for molten steel |
| KR102306120B1 (en) * | 2021-03-15 | 2021-09-28 | 장윤희 | Sampler for slag sample analysis |
| CN116698502A (en) * | 2023-06-29 | 2023-09-05 | 广东赛威赢环境技术工程有限公司 | Sampling equipment for sewage treatment |
-
2000
- 2000-10-04 JP JP2000305229A patent/JP4071925B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005043852B3 (en) * | 2005-09-13 | 2006-12-21 | Heraeus Electro-Nite International N.V. | Immersible probe, for use in steel processing, has sample-taking elements which have flat or concave surface facing away from immersion end and inclined to longitudinal axis in direction of end of probe body opposite immersion end |
| EP1762834A1 (en) * | 2005-09-13 | 2007-03-14 | Heraeus Electro-Nite International N.V. | Immersion probe for molten metal sampling |
| US7621191B2 (en) | 2005-09-13 | 2009-11-24 | Heraeus Electro-Nite International N.V. | Immersion probe |
| JP2008216171A (en) * | 2007-03-07 | 2008-09-18 | Ihi Corp | Sampling vessel and method for using the same |
| KR101185331B1 (en) | 2010-11-29 | 2012-09-26 | 현대제철 주식회사 | Method for testing slag characteristics using slag characteristics testing apparatus |
| KR20170075949A (en) * | 2015-12-24 | 2017-07-04 | 주식회사 포스코 | Protective cap of sampler and sampler for molten steel |
| KR102512878B1 (en) | 2015-12-24 | 2023-03-23 | 주식회사 포스코 | Protective cap of sampler and sampler for molten steel |
| KR102306120B1 (en) * | 2021-03-15 | 2021-09-28 | 장윤희 | Sampler for slag sample analysis |
| CN116698502A (en) * | 2023-06-29 | 2023-09-05 | 广东赛威赢环境技术工程有限公司 | Sampling equipment for sewage treatment |
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