JPS63154967A - Combustion improver for gas analysis - Google Patents
Combustion improver for gas analysisInfo
- Publication number
- JPS63154967A JPS63154967A JP30158386A JP30158386A JPS63154967A JP S63154967 A JPS63154967 A JP S63154967A JP 30158386 A JP30158386 A JP 30158386A JP 30158386 A JP30158386 A JP 30158386A JP S63154967 A JPS63154967 A JP S63154967A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- combustion improver
- particle size
- combustion
- pelletized
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 24
- 238000004868 gas analysis Methods 0.000 title claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 18
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 13
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000011593 sulfur Substances 0.000 claims abstract description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000010937 tungsten Substances 0.000 claims abstract description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000843 powder Substances 0.000 abstract description 53
- 238000004458 analytical method Methods 0.000 abstract description 20
- 229910052718 tin Inorganic materials 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 238000005204 segregation Methods 0.000 abstract description 2
- 238000005453 pelletization Methods 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 239000000446 fuel Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000008188 pellet Substances 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000011812 mixed powder Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000538 analytical sample Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は鉄鋼中の硫黄（Ｓ）、炭素（Ｃ）のガス分析を
行なう際に用いる助燃剤に関し、更に詳しくは、測定値
のバラツキを小たらしめて測定精度の向上を可能たらし
めるタングステン（Ｗ）−スズ（Ｓ ｎ）系のガス分析
用助燃剤に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a combustion improver used when performing gas analysis of sulfur (S) and carbon (C) in steel, and more specifically, The present invention relates to a tungsten (W)-tin (Sn)-based combustion improver for gas analysis, which makes it possible to improve measurement accuracy by reducing variations in measured values.
（従来の技術）
鉄鋼中の不純物１例えばＳ、Ｃのガス分析は概ね次のよ
うにして行なわれている。まず、ブロック、粉末の形態
は問わず所定量の分析試料がルツボ、ポートのような容
器に採取される。ついで、これらを燃焼炉内にセットし
、所定温度に加熱して分析試料を燃焼せしめる。そして
、発生した燃焼ガスを所定の分析装置にかけて、Ｓ、Ｃ
などの不純物を測定するのである。(Prior Art) Gas analysis of impurities such as S and C in steel is generally carried out as follows. First, a predetermined amount of an analysis sample, regardless of whether it is in the form of a block or powder, is collected into a container such as a crucible or port. Next, these are placed in a combustion furnace and heated to a predetermined temperature to burn the analysis sample. Then, the generated combustion gas is passed through a predetermined analyzer to
It measures impurities such as
この場合、分析試料を完全燃焼せしめるために、分析試
料は助燃剤と一緒に燃焼処理に付される。助燃剤として
は各種の金属又はそれらの酸化物が多用されるが、最近
では概ね高純度、とりわけ分析対象物であるＳ、Ｃの含
有量が少なく、粒径が０．３〜１．５ｍｍ程度のＷ粉粒
と同じく高純度で粒径が１〜２＋ｕ＋程度のＳｎ粉粒と
が同時に用いられている。In this case, the analysis sample is subjected to a combustion treatment together with a combustion improver in order to completely burn the analysis sample. Various metals or their oxides are often used as combustion improvers, but recently they are generally of high purity, with a particularly low content of S and C, which are the analytes, and a particle size of about 0.3 to 1.5 mm. Similarly to the W powder, Sn powder having a high purity and a particle size of about 1 to 2+u+ is used at the same time.
このとき、助燃剤は次のように取扱われている。例えば
、上記したＷ粉粒とＳｎ粉粒を諸定量混合し、この混合
粉を分析試料とともに容器内に収容したり、または、容
器内に収容しである分析試料に上記各粉末を別々に添加
したのち全体を簡単に混合するという操作である。いず
れにしても、Ｗ粉粒とＳｎ粉粒とは簡単に混合して燃焼
処理に付されているにすぎない。At this time, combustion improvers are handled as follows. For example, the W powder and Sn powder described above may be mixed in various amounts and the mixed powder may be placed in a container together with the analysis sample, or each of the above powders may be separately added to the analysis sample contained in the container. After that, the whole thing is simply mixed. In any case, W powder and Sn powder are simply mixed and subjected to combustion treatment.
（従来技術の問題点）
しかしながら、上記した従来操作のようにＷ粉粒とＳｎ
粉粒を分析試料に添加する方法では次のような問題が生
じている。すなわち、Ｗ粉粒とＳｎ粉粒との均一混合が
不充分であるという問題である。(Problems with the prior art) However, as in the conventional operation described above, W powder particles and Sn
The following problems arise with the method of adding powder particles to an analytical sample. That is, the problem is that uniform mixing of W powder and Sn powder is insufficient.
Ｗ粉粒とＳｎ粉粒とが不均一な混合状態にあると１分析
試料には燃焼ムラが発生し易くなり、その結果、Ｓ、Ｃ
の抽出率は低下し、しかも測定値がバランいて測定精度
の低下を招く。If W powder and Sn powder are in a non-uniform mixed state, uneven combustion is likely to occur in one analysis sample, and as a result, S, C
The extraction rate of is reduced, and the measured values become unbalanced, leading to a decrease in measurement accuracy.
本発明は、ＷとＳｎを所定の量比関係で予め均一に一体
化した混合粉粒であり、そのため１分析試料に燃焼ムラ
が生ずることのない助燃剤の提供を目的とする。The present invention aims to provide a combustion improver that is a mixed powder in which W and Sn are uniformly integrated in advance in a predetermined quantitative ratio, and therefore does not cause uneven combustion in one analysis sample.
［発明の構成］
（問題点を解決するための手段・作用）本発明者らは上
記問題点を解決すべく鋭意研究を重ねるなかで、この問
題点が上記した操作ではＷ粉粒とＳｎ粉粒との不均一混
合に基因すること、したがって、予めＷとＳｎが均一に
混合した状態の粉粒体を助燃剤として用いれば上記問題
点は解消し得ること、を想到し、この着想に基づいて更
に種々の研究を重ねた結果その着想の正しさを確認し本
発明の助燃剤を開発するに到った。[Structure of the invention] (Means/effects for solving the problem) The inventors of the present invention have conducted extensive research to solve the above problem, and have found that this problem has been solved by the above-mentioned operation. Based on this idea, we realized that the above problem is caused by uneven mixing with grains, and that the above problem can be solved by using powder and granules in which W and Sn are uniformly mixed in advance as a combustion improver. As a result of further various studies, the correctness of the idea was confirmed and the combustion improver of the present invention was developed.
すなわち、本発明の助燃剤は、Ｓｎ １０〜３５重量
％、ＳおよびＣがそれぞれ１０ｐｐｍ以下であり、残部
が実質的にＷであることを特徴とする。That is, the combustion improver of the present invention is characterized in that Sn is 10 to 35% by weight, S and C are each 10 ppm or less, and the balance is substantially W.
本発明の助燃剤はＷ粉とＳｎ粉を造粒したものである。The combustion improver of the present invention is made by granulating W powder and Sn powder.
この場合、造粒粉の平均粒径はＯ０１〜２ｍｍ程度に整
粒することが好ましい。In this case, the average particle size of the granulated powder is preferably sized to about 001 to 2 mm.
Ｓｎ粉の割合いが少なすぎると分析試料が完全に溶融し
ない等の問題が生じ、また逆に多すぎると体積が増加す
るため偏析が起こりやすくなるような問題が生じはじめ
るので、１０〜３５重量％に設定する。好ましくは２０
〜３０重量％であり、更に好ましくは２０〜２５重量％
である。If the proportion of Sn powder is too small, problems such as the analysis sample not being completely melted will occur, while if it is too large, the volume will increase, making segregation more likely. Set to %. Preferably 20
-30% by weight, more preferably 20-25% by weight
It is.
また、この造粒粉において、Ｓ、Ｃの含有量が多い場合
は、分析精度の信頼性が落ちるので、それぞれの含有量
はｌｏｐｐｍ以下に設定される。このためには、造粒に
用いるＷ粉、Ｓｎ粉の純度をそれぞれ高めると同時に造
粒時の外部からの不純物混入を抑制することが必要であ
る。Moreover, in this granulated powder, if the content of S and C is large, the reliability of analysis accuracy decreases, so the content of each is set to loppm or less. To this end, it is necessary to increase the purity of the W powder and Sn powder used for granulation, and at the same time to suppress the contamination of external impurities during granulation.
このような造粒粉は例えば次のようにして製造すること
ができる０例えばまず、平均粒径１．０〜１０μｍ程度
のＷ微粉を一旦水素炉中において１４００−１８５０℃
で熱処理する。この熱処理によりＷ微粉中のＳ、Ｃを揮
散せしめ、その含有量を１０ｐｐｍ以下に減少せしめる
のである。その後、得られたＷ微粉、に高純度のＳｎ粉
を所定量混合し、両者を例えばＷの内張りが施されてい
る混合機の中で所定時間混合し、成形・粉砕し、所定粒
径の造粒粉に整粒するのである。Such granulated powder can be produced, for example, as follows. For example, first, fine W powder with an average particle size of about 1.0 to 10 μm is heated in a hydrogen furnace at 1400 to 1850°C.
Heat treated with This heat treatment volatilizes S and C in the fine W powder and reduces the content to 10 ppm or less. Thereafter, a predetermined amount of high-purity Sn powder is mixed with the obtained W fine powder, and both are mixed for a predetermined time in a mixer lined with W, for example, and then shaped and pulverized to form a predetermined particle size. It is sized into granulated powder.
このときに、Ｗ微粉の代りに、予め０、ｌ〜１．５ｍｍ
程度に整粒された造粒Ｗ粉を用いてもよい、又、均一に
混合されたＷ−３ｎ粉を成形のみで整粒しても良い。At this time, instead of W fine powder, 0.1 to 1.5 mm of
Granulated W powder that has been sized to a certain degree may be used, or W-3n powder that has been uniformly mixed may be sized by only molding.
（発明の実施例）
実施例１．実施例２
平均粒径７戸のＷ微粉を１８００″Ｃの水素炉中で１時
間熱処理した。得られたＷ微粉のＳ、Ｃ含有量はそれぞ
れ５ｐｐｍ 、 ８ｐｐｍであった。(Embodiments of the invention) Example 1. Example 2 W fine powder having an average particle size of 7 units was heat treated in a hydrogen furnace at 1800''C for 1 hour. The S and C contents of the obtained W fine powder were 5 ppm and 8 ppm, respectively.
ついで、このＷ微粉に、ｓ、ｃ含有量がそれぞれ５ｐｐ
ｍ 、 ５ｐｐｍであるＳｎ粉（１００メツシユ以下）
を表示の割合で混合し、Ｗ内張りのポットで１時間混合
した。得られた造粒粉を粒径０．１〜２Ｉに整粒した。Next, the s and c contents were added to this W fine powder at 5 ppp each.
m, 5ppm Sn powder (100 mesh or less)
were mixed at the indicated ratio and mixed in a W-lined pot for 1 hour. The obtained granulated powder was sized to a particle size of 0.1 to 2I.
これを第１の実施例粉とする。This is referred to as the first example powder.
得られた各造粒粉つき無作為にサンプル３種をとりだし
、それぞれＳｎＭを分析した。その結果（平均値及び最
大値−最小値）を表に示した。Three types of samples were randomly taken out from each of the obtained granulated powders, and SnM was analyzed for each sample. The results (average value and maximum value - minimum value) are shown in the table.
また、これら各造粒粉を用い、分析試料としてＮｉ系鉄
鋼を選び、常法によりＳ、Ｃの同時定量分析を行なった
。その結果を表に示した。Further, using each of these granulated powders, Ni-based steel was selected as an analysis sample, and simultaneous quantitative analysis of S and C was conducted by a conventional method. The results are shown in the table.
また、上記したＷ微粉を−Ｈ直径０．１−０．８ｆｆ１
ｍの造粒粉に整粒したのち、上記と同様にしてＷ−３ｎ
造粒粉（これを第２の実施例粉とする）を調製した場合
のＳｎ量、Ｓ、Ｃの同時分析の結果も示した。In addition, the above-mentioned W fine powder -H diameter 0.1-0.8ff1
After grading into W-3n granulated powder in the same manner as above,
The results of simultaneous analysis of the amount of Sn, S, and C in the case of preparing granulated powder (this is referred to as the second example powder) are also shown.
比較のために、Ｓ、Ｃ含有量がそれぞれ５ｐｐｍ。For comparison, the S and C contents were each 5 ppm.
８ ｐｐｍであるＷ粒とＳ、Ｃ含有量がそれぞれ５ＰＰ
ＩＩＩ ｌ ５ｐｐｍであるＳｎ粒とを別々に所定量ず
つ今後した場合の混合粉におけるＳｎ量の分析値及びそ
れを用いたときのＮｉ系鉄鋼のＳ、Ｃ同時分析の結果も
表に示した。W grain with 8 ppm and S and C contents of 5PP each
The table also shows the analysis value of the amount of Sn in the mixed powder when a predetermined amount of Sn grains with a concentration of 5 ppm is added separately, and the results of the simultaneous S and C analysis of Ni-based steel using the same.
この結果より明らかなように本発明の実施例である第１
．第２の実施例粉中のＳｎ １０〜３５重量％の助燃
剤はＳｎが均一に混合しており、かつＳ、Ｃ分析値のバ
ラツキが小さい。As is clear from this result, the first example of the present invention
．． In the combustion improver containing 10 to 35% by weight of Sn in the powder of the second example, Sn is mixed uniformly, and the variation in S and C analysis values is small.
［発明の効果］
以上の説明で明らかなように、本発明の助燃剤はＷ粉と
Ｓｎ粉とが均一に今後した状態で造粒されていて分析試
料の完全燃焼を可能たらしめ、Ｓ、Ｃ分析値のバラツキ
が小さくなり分析精度を高めることができて有用である
。[Effects of the Invention] As is clear from the above explanation, the combustion improver of the present invention is granulated with W powder and Sn powder evenly mixed together, making it possible to completely burn the analysis sample. This is useful because it reduces the variation in C analysis values and improves analysis accuracy.
Claims (2)
れ１０ｐｐｍ以下であり、残部が実質的にタングステン
よりなるガス分析用助燃剤。(1) A combustion improver for gas analysis, containing 10 to 35% by weight of tin, 10 ppm or less of each of sulfur and carbon, and the remainder substantially consisting of tungsten.
特許請求の範囲第１項に記載のガス分析用助燃剤。(2) The combustion improver for gas analysis according to claim 1, wherein the average particle size of the combustion improver is 0.1 to 2.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30158386A JPS63154967A (en) | 1986-12-19 | 1986-12-19 | Combustion improver for gas analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30158386A JPS63154967A (en) | 1986-12-19 | 1986-12-19 | Combustion improver for gas analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63154967A true JPS63154967A (en) | 1988-06-28 |
Family
ID=17898693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30158386A Pending JPS63154967A (en) | 1986-12-19 | 1986-12-19 | Combustion improver for gas analysis |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63154967A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0279454A2 (en) * | 1987-02-20 | 1988-08-24 | Horiba, Ltd. | Assistant combustion agent for the use in a high-frequency combustion furnace |
| JP2002243374A (en) * | 2001-02-14 | 2002-08-28 | Mitsubishi Heavy Ind Ltd | Inter-cooler and air conditioner for co2 refrigerant vehicle |
| US11913730B2 (en) | 2019-04-09 | 2024-02-27 | Pfannenberg Gmbh | Heat exchanger arrangement and method for producing a heat exchanger arrangement |
-
1986
- 1986-12-19 JP JP30158386A patent/JPS63154967A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0279454A2 (en) * | 1987-02-20 | 1988-08-24 | Horiba, Ltd. | Assistant combustion agent for the use in a high-frequency combustion furnace |
| JP2002243374A (en) * | 2001-02-14 | 2002-08-28 | Mitsubishi Heavy Ind Ltd | Inter-cooler and air conditioner for co2 refrigerant vehicle |
| US11913730B2 (en) | 2019-04-09 | 2024-02-27 | Pfannenberg Gmbh | Heat exchanger arrangement and method for producing a heat exchanger arrangement |
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