JPS62172262A - Method for directly analyzing molten metal of refining furnace out of inert gas introducing furnace - Google Patents
Method for directly analyzing molten metal of refining furnace out of inert gas introducing furnaceInfo
- Publication number
- JPS62172262A JPS62172262A JP61015419A JP1541986A JPS62172262A JP S62172262 A JPS62172262 A JP S62172262A JP 61015419 A JP61015419 A JP 61015419A JP 1541986 A JP1541986 A JP 1541986A JP S62172262 A JPS62172262 A JP S62172262A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- gas
- furnace
- inert gas
- halide
- 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.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 47
- 239000002184 metal Substances 0.000 title claims abstract description 47
- 239000011261 inert gas Substances 0.000 title claims abstract description 16
- 238000007670 refining Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 title description 29
- 239000007789 gas Substances 0.000 claims abstract description 37
- 150000004820 halides Chemical class 0.000 claims abstract description 13
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 11
- 150000002367 halogens Chemical class 0.000 claims abstract description 11
- 238000004458 analytical method Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 239000008246 gaseous mixture Substances 0.000 abstract 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000000523 sample Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000011088 calibration curve Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 150000001805 chlorine compounds Chemical class 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 229910052789 astatine Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- -1 iron halides Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000011002 quantification Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- NJYFRQQXXXRJHK-UHFFFAOYSA-N (4-aminophenyl) thiocyanate Chemical compound NC1=CC=C(SC#N)C=C1 NJYFRQQXXXRJHK-UHFFFAOYSA-N 0.000 description 1
- 101001024418 Arabidopsis thaliana Gamma carbonic anhydrase 3, mitochondrial Proteins 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- 229910021550 Vanadium Chloride Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical class Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- RPESBQCJGHJMTK-UHFFFAOYSA-I pentachlorovanadium Chemical compound [Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[V+5] RPESBQCJGHJMTK-UHFFFAOYSA-I 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000363 spectroscopic quantification Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- AXZWODMDQAVCJE-UHFFFAOYSA-L tin(II) chloride (anhydrous) Chemical group [Cl-].[Cl-].[Sn+2] AXZWODMDQAVCJE-UHFFFAOYSA-L 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
溶鋼や溶銑（本明細書ではこれらを一括して「溶湯」と
いう。）の成分分析を迅速に行なうことは生産能率の向
上あるいは各処理工程における迅速な対応が可能となっ
て生産コストを低減させることができるため非常に重要
である。[Detailed Description of the Invention] [Field of Industrial Application] Rapid component analysis of molten steel and hot metal (herein collectively referred to as "molten metal") is useful for improving production efficiency or for each processing process. This is very important because it allows for rapid response in the field and reduces production costs.
この発明は分析用試料を溶湯から取り出すことなく製鋼
現場において溶湯成分を迅速に分析できる方法を提供す
るものである。The present invention provides a method that allows rapid analysis of molten metal components at a steelmaking site without removing samples for analysis from the molten metal.
溶湯の迅速分析法が最近種々開発されているが（例えば
、鉄と鋼「第１０９回討論会講演概要；オンライン分析
技術の最近の進歩Ｊｖｏｔ、７１、扁２、Ｐ１２５〜（
１９８５）、特開昭５７−１１９２４１号公報、特開昭
５９−１４５９３２号公報、特開昭５９−２１０３３０
号公報、特開昭５９−２１０３４９号公報など）、これ
らの方法は２つに大別される。その−は溶湯面をレーザ
ー、アーク等で励起し、分析情報としての光を伝送し、
分光定量する方法である。Recently, various rapid analysis methods for molten metal have been developed (for example, "Tetsu to Hagane" 109th Symposium Lecture Summary; Recent Advances in Online Analysis Technology Jvot, 71, Bian 2, P125~ (
1985), JP-A-57-119241, JP-A-59-145932, JP-A-59-210330
(Japanese Patent Laid-Open No. 59-210349, etc.), these methods are roughly divided into two. - Excites the molten metal surface with a laser, arc, etc., transmits light as analytical information,
This is a method of spectroscopic quantification.
もうひとつは溶湯面をやはυレーザー、アーク等で励起
し、その除光とともに生成する微細粒子を搬送してキャ
ピラリーアーク、高周波誘導プラズマ発光（ＩＣＰ ）
等による発光分析法で定量する方法である。The other method is to excite the molten metal surface with a υ laser, arc, etc., and transport the fine particles generated as the light is removed to produce capillary arc or high-frequency induced plasma emission (ICP).
This is a method of quantitative determination using luminescence spectrometry.
そのほかプローブを使用する方法もある。例えば鋼中の
アルミニウム成分の分析は製鋼工程の管理上最も重要で
あシ、従来溶湯中のアルミニウム含有量の推定はほとん
どが酸素グローブによっていた。また、本発明者らは溶
湯中にプローブを挿入して溶湯をグローブ内に取シ入れ
該グローブにハロゲンガスと不活性ガスの混合ガスを導
入してハロゲン化物ガスを生成させてこれを分析する方
法を先に開発している（特願昭６０−１３２０５５号）
。Another method is to use a probe. For example, analysis of the aluminum content in steel is most important in controlling the steelmaking process, and conventionally the aluminum content in molten metal has mostly been estimated using oxygen globes. In addition, the present inventors insert a probe into the molten metal, take the molten metal into a globe, and introduce a mixed gas of halogen gas and inert gas into the globe to generate halide gas and analyze it. The method has been developed first (Patent Application No. 132055/1983)
.
前記の溶湯面を励起する方法はいずれも長所及び短所を
有しているが、次のような共通の短所がある。すなわち
、溶湯の励起を行なうためには溶湯面に原理的に空間が
必要であるが、スラグが浮き流動が激しい溶η面におい
てスラグ等の混入がなくかつ安定した溶湯面を常に確保
することが容易でなく、この方法による迅速分析の実施
を難しくしている。また、溶湯を励起するためにレーデ
−やアーク等といった特別な設備が必要とな）システム
全体が非常に高価になるということも問題であった。All of the above methods of exciting the molten metal surface have advantages and disadvantages, but they have the following common disadvantages. In other words, in principle, a space is required on the molten metal surface in order to excite the molten metal, but it is necessary to always ensure a stable molten metal surface without any slag mixed in on the molten metal surface where slag floats and flows rapidly. This makes it difficult to perform rapid analysis using this method. Another problem was that the entire system was very expensive (necessitating special equipment such as radar and arc to excite the molten metal).
また、酸素グローブを使用する方法はアルミニウムに限
られ、かつ１回の測定ごとに１本のプローブを必要とす
るためプローブが高価なこともありて測定回数が制限さ
れていた。このプローブのコストの問題は本発明者らが
先に開発した方法においても同様であった。Furthermore, the method of using an oxygen glove is limited to aluminum and requires one probe for each measurement, which limits the number of measurements due to the high cost of the probe. This probe cost problem was also the same in the method previously developed by the present inventors.
Ｃ問題点を解決するための手段〕
本発明は、このような問題点を解決して、溶湯のす／ブ
リングや反応プローブの挿入等を行なうことなく、操業
中に迅速かつ連続的に微量元素を分析しうる手段を提供
するものである。すなわち、本発明は、溶湯を不活性ガ
スで攪拌しながら炉外精錬するに当り、前記不活性ガス
中にハロゲンガスを混合することにより溶湯中の成分を
ハロゲン化物に変え、溶湯から放出される該ハロゲン化
物ガスを定量することを特徴とする、不活性ガス導入炉
外精錬炉における溶湯中の成分の直接分析方法に関する
ものである。Means for Solving Problem C] The present invention solves these problems and quickly and continuously extracts trace elements during operation without molten metal bathing/bling or insertion of reaction probes. It provides a means to analyze the That is, in the present invention, when refining the molten metal outside the furnace while stirring it with an inert gas, by mixing halogen gas into the inert gas, the components in the molten metal are converted to halides, which are released from the molten metal. The present invention relates to a method for directly analyzing components in molten metal in an inert gas-introduced external refining furnace, which is characterized by quantifying the halide gas.
本発明の方法を適用できるのは炉外精錬炉でおって溶湯
に不活性ガスを導入して攪拌するタイプである。このよ
うな炉の例として真空脱ガス炉（ＲＨ炉）、バブリング
アロイプロセスＦ （ＢＡＰ炉）などが挙げることがで
きる。不活性ガスは従来使用されているもの例えばアル
ゴンなどをそのまま使用すればよい。The method of the present invention can be applied to an external refining furnace of the type in which an inert gas is introduced into the molten metal and stirred. Examples of such a furnace include a vacuum degassing furnace (RH furnace) and a bubbling alloy process F (BAP furnace). As the inert gas, conventionally used gases such as argon may be used as they are.
本発明の方法は不活性ガスにハロゲンガスを混入して用
いるところに特徴がある。ハロゲンガスは塩素ガス、フ
ッ素がス、臭素ガスなどである。The method of the present invention is characterized in that a halogen gas is used mixed with an inert gas. Halogen gases include chlorine gas, fluorine gas, and bromine gas.
例えば、表１に示すように、ハロゲンに塩素ガスを用い
れば通常測定される溶湯成分のうち炭素以外のすべてを
塩化物に変えることができる。For example, as shown in Table 1, if chlorine gas is used as the halogen, all of the normally measured molten metal components other than carbon can be converted to chlorides.
表１ 各塩化物の生成自由エネルギー
Ｍ （ｓ 、 ｔ １ｇ ） 十ＸＣＬ２ （ｇ）→Ｍ
Ｃ１ｘ／２（ｔ、ｇ）そして、各塩化物の飽和蒸気圧と
温度の関係を第３図に示すように、溶湯温度（通常１６
００〜１７００℃程度）ではすべての塩化物をガスとし
て取シ出すことが可能である。図中、Ａは５ｉｃｚ４、
Ｂはｐｃｔ、、ＣはＡｔＣＡ３、Ｄは５ｂｃｚ、、Ｅは
Ｓ ｎＣｌ２、ＦはＰｂＣ２２、ＧはＦｅＣｌ２− Ｈ
はＮ Ｉ Ｃｌ２、ＩはＣｕ ２ Ｃｔ ２そしてＪは
ｖＣｔ２をそれぞれ表わしている。同図に示すように、
鉄の塩化物は好都合なことに比較的蒸気圧が低い。また
、塩化バナジウムの蒸気圧も低いが、溶湯中のバナジウ
ムの含有率は通常０．１チ以下であるから、この蒸気の
回収は充分に可能である。Table 1 Free energy of formation of each chloride M (s, t 1g) 1XCL2 (g) → M
C1x/2 (t, g) Then, as shown in Figure 3, the relationship between the saturated vapor pressure and temperature of each chloride is determined by the molten metal temperature (usually 16
(about 00 to 1700°C), it is possible to extract all the chlorides as gas. In the figure, A is 5icz4,
B is pct, C is AtCA3, D is 5bcz, E is SnCl2, F is PbC22, G is FeCl2-H
represents N I Cl2, I represents Cu 2 Ct 2 and J represents vCt2, respectively. As shown in the figure,
Iron chlorides advantageously have relatively low vapor pressures. Further, although the vapor pressure of vanadium chloride is low, since the content of vanadium in the molten metal is usually 0.1 h or less, it is possible to sufficiently recover this vapor.
ハロゲノがスの混合比率は溶湯の種類、溶湯への影響、
へロダン化物を分析する機器の感度、精錬条件、炉の種
類などから適当になるように設定され、通常混合ガス全
体の０．０１〜ｌ容ｉ％程度の範囲から選択される。The mixing ratio of halogen gas depends on the type of molten metal, its influence on the molten metal,
It is set appropriately depending on the sensitivity of the equipment for analyzing helodanide, refining conditions, type of furnace, etc., and is usually selected from a range of about 0.01 to 1% by volume of the entire mixed gas.
この混合ガスには内部標準として適当なガスを一定割合
で混合させることもできる。この内部標準には鉄のハロ
ゲン化物も利用できることはいうまでもない。A suitable gas can also be mixed in this mixed gas at a constant ratio as an internal standard. Needless to say, iron halides can also be used as this internal standard.
不活性ガスを吹き込むタイプの炉においては一般に溶湯
から放出されるガスは捕集される構造になっているので
生成したハロゲン化物ガスはその排出管の途中から分取
することができる。この分岐管は測定対象元素の沸点が
高い混合には凝縮しないように加熱する必要がある場合
もある。Furnaces of the type in which inert gas is blown generally have a structure in which the gas released from the molten metal is collected, so the generated halide gas can be collected from the middle of the exhaust pipe. This branch pipe may need to be heated to prevent condensation when a mixture of the elements to be measured has a high boiling point.
・−ロダン化物は、反応温度等の条件によシ２・−ロダ
ン化物、３−・ロダン化物、４−・ロダン化物などの混
合物が得られることがあるが、その場合にはこれらのす
べてを定量してもよく、また条件が一定の場合には１種
を定量して全体の量を算出してもよい。・-Rhodanide may be obtained as a mixture of 2-rhodanide, 3-rhodanide, 4-rhodanide, etc. depending on conditions such as reaction temperature, but in that case, all of these may be obtained. It may be quantified, or if the conditions are constant, one species may be quantified to calculate the total amount.
検出器は測定対象成分の種類と数を考慮して選択され、
例えば高周波銹導プラズマ発光分光分析装置、質量分析
装置、赤外線分光光度計などをオリ用しうる。定量は各
成分の既知の濃度のものについて測定して検量線を作成
しておきこれと参照させることによって行なうことがで
きる。この検量線をコンピュータに記憶させておけば各
成分の濃度への変換を自動的に行なわせることもできる
。The detector is selected considering the type and number of components to be measured.
For example, a high frequency induction plasma emission spectrometer, a mass spectrometer, an infrared spectrophotometer, etc. can be used. Quantification can be carried out by measuring known concentrations of each component, creating a calibration curve, and referring to this. If this calibration curve is stored in a computer, it can be automatically converted into concentrations of each component.
ハロゲン化物の生成量は導入ガス量その他の反応条件に
よって多少変動するのでハロ２ン化鉄、アルゴン等を内
部標準に用いて算出することが好ましい。Since the amount of halide produced varies somewhat depending on the amount of introduced gas and other reaction conditions, it is preferable to calculate using iron halide, argon, etc. as an internal standard.
この定量は反応論に立脚して行なうこともできる。すな
わち、塩化物の生成反応は一般式としてｙ＋αＣｔ２
→ＭＣ２２（ｘ’ （Ｍ；Ｆ ｅ ｒ Ｓ ｌ ＋ Ｍ
ｎ ＊ Ｐ ｔ Ａｔ＋ ｅ ｔｃ ）で示され、平衡
時は
ＫＭ−２ＭＣ７／（ａＭ−ｐ″ｃ１２）・・・（１）が
成立する。こ２α
こでＫＭは平衡定数で６シ、
多成分の平衡時Ｐｃｔ２は各成分に同一であるから定量
の必要のない鉄に関し
ＫＦ＊＝ Ｐｒａｃｅ□／（”Ｆ＊ ”Ｃｌ２）のＰｃ
ｌ□ を（１）式に導入し、（２）式を得る。This quantification can also be performed based on reaction theory. In other words, the general formula for the chloride production reaction is y+αCt2
→MC22(x'(M; F e r S l + M
n * P t At+ e tc ), and at equilibrium, KM-2MC7/(aM-p″c12)...(1) holds.2α Here, KM is an equilibrium constant of 6, and is multicomponent. Since Pct2 at equilibrium is the same for each component, it is not necessary to quantify iron, and Pc of KF* = Place
Introducing l□ into equation (1) to obtain equation (2).
”Ｍ ／”Ｆ ｅ −Ｃｘ２ＭＣｌ２ａ／ＰＦｅ”Ｃ７
０） ”” （２）（ここでＣ！ Ｋ”、。／ＫＭ）
す、中１とし、その他の成分の活量を相互作用動係ａａ
）を用いて他元素の補正を行なってＨｅｎｒｙ基準の
活量で示すとａＭぼＰＭＣｌ ／ｐ、。′ｏ６に対し
一２α ２
次式では示されるのでこれにょシ定量化することができ
る。"M/"Fe-Cx2MCl2a/PFe"C7
0) ”” (2) (Here, C! K”, ./KM) Let the activity of the other components be the interaction coefficient aa.
) is used to correct for other elements and expressed as Henry standard activity: aM PMCl /p. 'o6 can be expressed as a -2α quadratic equation, so it can be quantified.
不活性ガスにハロゲンガスを混入してこれを溶湯に反応
させることによシ溶湯中の測定対象成分をハロゲン化物
に変えてガス化させる。そして、この反応ガス生成物を
取シ出して分析することにより溶湯中の各成分を定量す
ることができる。By mixing halogen gas into the inert gas and reacting it with the molten metal, the component to be measured in the molten metal is converted into a halide and gasified. By extracting and analyzing this reaction gas product, each component in the molten metal can be quantified.
例１
本発明の方法をＲＨ炉に適用した例を第１図に示す。Ｒ
Ｈ炉は、同図に示すように、取鍋１及びその上に配設さ
れた真空槽２よりなっている。真空槽２の底部には溶湯
の吸上管３と吐出管４が設けられ、吸上管３の途中には
アルゴンガスの通気管５が接続されている。一方、真空
槽の上部には大径の排気管６が接続されている。本発明
の方法を適用するにあたっては、このようなＲＨ炉の通
気管５の途中にハロゲンガスを設定した比率で混合する
装置（図示されていない。）を設けるとともに排気管６
にはガス取出管７を接続し、これを質量分析計８に接続
した。Example 1 An example in which the method of the present invention is applied to an RH furnace is shown in FIG. R
As shown in the figure, the H furnace consists of a ladle 1 and a vacuum chamber 2 disposed above it. A molten metal suction pipe 3 and a discharge pipe 4 are provided at the bottom of the vacuum chamber 2, and an argon gas ventilation pipe 5 is connected to the middle of the suction pipe 3. On the other hand, a large diameter exhaust pipe 6 is connected to the upper part of the vacuum chamber. When applying the method of the present invention, a device (not shown) for mixing halogen gas at a set ratio is provided in the middle of the vent pipe 5 of such an RH furnace, and the exhaust pipe 6
A gas take-off tube 7 was connected to the tube, and this was connected to a mass spectrometer 8.
このような装置を用い、アルゴンガスに塩素ガスを０．
１容積チになるように混合して真空槽に通気して排出ガ
スのｈｔｃｔ３とＦ ｅ Ｃ１０を内標準としてＡｔ／
Ｆｅに対し、溶湯中のアルミニウムの含有量を変えて検
量線を求めた。Using such a device, add 0.0% chlorine gas to argon gas.
Mix the mixture to 1 volume, ventilate it in a vacuum chamber, and use the exhaust gas htct3 and FeC10 as internal standards to At/
A calibration curve was determined for Fe by varying the content of aluminum in the molten metal.
その結果、Ａｔ／ＦｅとＡｔ含有量は第４図に示すよう
に良好な直線関係にあシ、本法によって溶鋼中Ａｔが、
迅速に、かつ正確に定量できることを確認した。As a result, At/Fe and At content have a good linear relationship as shown in Figure 4, and by this method, At in molten steel can be
It was confirmed that it could be quantified quickly and accurately.
例２ 本発明の方法をＢＡＰ炉に適用した例を第２図に示す。Example 2 FIG. 2 shows an example in which the method of the present invention is applied to a BAP furnace.
ＲＡＰ炉は同図に示すように、取＠１の底面にはポージ
スレンガよりなる不活性ガス導入口９が設けられ、そこ
にはアルゴンガスの通気管５が接続されている。一方、
取鍋１の上部には排出ガスの集気のために開口部が大径
になった排気管６が配設されている。このよりなりＡＰ
炉に例１と同様に−・ログンガス混合装置及び質量分析
計８を取り付けて実施例１と同様な手法によシ検量線を
求め、アルミニウムを定量したところ溶湯を汲取シ化学
分析した結果とよく一致した結果が得られた。As shown in the figure, the RAP furnace is provided with an inert gas inlet 9 made of Poges brick at the bottom of the tray 1, to which an argon gas vent pipe 5 is connected. on the other hand,
An exhaust pipe 6 having a large diameter opening is provided at the top of the ladle 1 to collect exhaust gas. AP from this
In the same manner as in Example 1, a log gas mixing device and a mass spectrometer 8 were attached to the furnace, and a calibration curve was determined using the same method as in Example 1.The amount of aluminum was determined. Consistent results were obtained.
本発明の方法は不活性ガスに−・ロダンガスを混入する
とともにハロゲン化物の分析装置を取シ付けるだけでよ
く、迅速に多成分の分析を容易に行なうことができる。The method of the present invention requires only mixing rodan gas with an inert gas and attaching a halide analyzer, making it possible to quickly and easily analyze multiple components.
そして、特別な励起源らるいは安定湯面の確保等の配慮
が一切必要なく、安定して測定を行なうことができる。Furthermore, measurements can be carried out stably without the need for any special excitation source or consideration for ensuring a stable hot water level.
また、製鋼プロセスにおいては常に全成分の分析を要求
されるわけではなく、例えば溶銑脱Ｓ１プロセスではＳ
ｌ、脱ＰプロセスではＰの分析を中心に行なえば足シる
が、本発明の方法はこのような要求にも容易に適応でき
るものである。本発明の方法においてはプローブ等を使
用しないでよいところからコストの問題なく任意回数あ
るいは連続的に測定することができ、その結果精錬工程
管理を適切に行なうことができる。In addition, analysis of all components is not always required in the steelmaking process; for example, in the hot metal desaturation S1 process, S
l. In the P removal process, it would be difficult to focus on analyzing P, but the method of the present invention can be easily adapted to such requirements. Since the method of the present invention does not require the use of probes or the like, it is possible to perform measurements any number of times or continuously without any cost problems, and as a result, the refining process can be appropriately controlled.
第１図及び第２図はいずれも本発明の方法の実施に利用
される装置の一例を示すものである。第３図は各種塩化
物の温度と蒸気圧の関係を示すものである。第４図は溶
湯中のＡｔ／ＦｅとＡｔ含有量との関係を示すグラフで
ちる。1 and 2 both show an example of an apparatus used to carry out the method of the present invention. FIG. 3 shows the relationship between temperature and vapor pressure of various chlorides. FIG. 4 is a graph showing the relationship between At/Fe and At content in the molten metal.
Claims (1)
前記不活性ガス中にハロゲンガスを混合することにより
溶湯中の成分をハロゲン化物に変え、溶湯から放出され
る該ハロゲン化物ガスを定量することを特徴とする、不
活性ガス導入炉外精錬炉における溶湯中の成分の直接分
析方法When refining molten metal outside the furnace while stirring it with inert gas,
In an inert gas introduction external refining furnace, characterized in that a component in the molten metal is changed to a halide by mixing a halogen gas in the inert gas, and the halide gas released from the molten metal is quantified. Direct analysis method for components in molten metal
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61015419A JPS62172262A (en) | 1986-01-27 | 1986-01-27 | Method for directly analyzing molten metal of refining furnace out of inert gas introducing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61015419A JPS62172262A (en) | 1986-01-27 | 1986-01-27 | Method for directly analyzing molten metal of refining furnace out of inert gas introducing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62172262A true JPS62172262A (en) | 1987-07-29 |
| JPH0521506B2 JPH0521506B2 (en) | 1993-03-24 |
Family
ID=11888238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61015419A Granted JPS62172262A (en) | 1986-01-27 | 1986-01-27 | Method for directly analyzing molten metal of refining furnace out of inert gas introducing furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62172262A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58218650A (en) * | 1982-06-15 | 1983-12-19 | Showa Alum Ind Kk | Method and apparatus for measuring hydrogen content in molten aluminum base metal |
| JPS59211521A (en) * | 1983-05-16 | 1984-11-30 | Japan Metals & Chem Co Ltd | Manufacture of low aluminum ferroboron |
-
1986
- 1986-01-27 JP JP61015419A patent/JPS62172262A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58218650A (en) * | 1982-06-15 | 1983-12-19 | Showa Alum Ind Kk | Method and apparatus for measuring hydrogen content in molten aluminum base metal |
| JPS59211521A (en) * | 1983-05-16 | 1984-11-30 | Japan Metals & Chem Co Ltd | Manufacture of low aluminum ferroboron |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0521506B2 (en) | 1993-03-24 |
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