JPH02172540A - Crucible for chemical analysis - Google Patents
Crucible for chemical analysisInfo
- Publication number
- JPH02172540A JPH02172540A JP32834188A JP32834188A JPH02172540A JP H02172540 A JPH02172540 A JP H02172540A JP 32834188 A JP32834188 A JP 32834188A JP 32834188 A JP32834188 A JP 32834188A JP H02172540 A JPH02172540 A JP H02172540A
- Authority
- JP
- Japan
- Prior art keywords
- crucible
- chemical analysis
- flux
- alkali
- crystal grains
- 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
- 239000000126 substance Substances 0.000 title claims abstract description 19
- 230000004907 flux Effects 0.000 claims abstract description 21
- 229910001260 Pt alloy Inorganic materials 0.000 claims abstract description 5
- 239000013078 crystal Substances 0.000 abstract description 8
- 239000003513 alkali Substances 0.000 abstract description 5
- 238000010828 elution Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 229910052763 palladium Inorganic materials 0.000 abstract description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 3
- 239000011707 mineral Substances 0.000 abstract 3
- 238000007788 roughening Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 239000000155 melt Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、アルカリ融剤を用いて鉱石の化学分析（成分
分析）を行うるつぼに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a crucible for chemical analysis (component analysis) of ores using an alkaline flux.
（従来の技術）
従来より鉱石の成分分析を行うには、鉱石をＰするつぼ
内に入れて、酸又はアルカリの融剤を加え、加熱して鉱
石を融成し、その後冷却させて融成物を取り出し、成分
分析を行っている。(Prior art) Traditionally, in order to analyze the components of ores, the ore is placed in a P crucible, an acid or alkali flux is added, the ore is heated to melt it, and then it is cooled to melt the ore. We take things out and analyze their components.
（発明が解決しようとする課題）
ところで、鉱石の酸敗剤による溶解は４００〜８００℃
であるが、アルカリ融剤による溶解は１０００〜１２０
０℃である。この為、Ｐするつぼは、アルカリ融剤によ
る鉱石の溶解中、結晶粒が粗大化し、るつぼが変形して
、融成物が結晶粒の荒れとの食い付きが発生し、剥離が
悪くなる。またアルカリ融剤に侵蝕され且つ高温で揮発
、溶出して、るつぼ重量が著しく減少する。(Problem to be solved by the invention) By the way, ore is dissolved at 400 to 800°C by a rancidizing agent.
However, the dissolution with an alkaline flux is 1000 to 120
It is 0°C. For this reason, in the P crucible, during the melting of the ore with the alkaline flux, the crystal grains become coarse, the crucible is deformed, the melt bites into the roughness of the crystal grains, and peeling becomes difficult. Furthermore, it is corroded by the alkaline flux and volatilized and eluted at high temperatures, resulting in a significant reduction in the weight of the crucible.
そこで本発明は、アルカリ融剤により鉱石を溶解中、結
晶粒が粗大化せず、しかもるつぼが変形せず、またアル
カリ融剤に侵蝕されに＜＜、高温で揮発、溶出しにくい
化学分析用るつぼを提供しようとするものである。Therefore, the present invention is designed to prevent crystal grains from becoming coarse while melting the ore with an alkaline flux, and also prevent the crucible from deforming. It seeks to provide a melting pot.
（課題を解決するための手段）
上記課題を解決するための本発明の化学分析用るつぼは
、アルカリ融剤を用いて鉱石の化学分析を行うるつぼが
、ＰｔにＰｄを５〜９０ｗｔ％添加して成るＰｔ合金に
て作られていることを特徴とするものである。(Means for Solving the Problems) A crucible for chemical analysis of the present invention for solving the above problems is a crucible for chemically analyzing ores using an alkaline flux, in which 5 to 90 wt% of Pd is added to Pt. It is characterized by being made of a Pt alloy.
本発明の化学分析用るつぼの成分組成を、ＰｔにＰｄを
５〜９０ｗｔ％添加して成るＰｔ合金とした理由は、ア
ルカリ融剤により鉱石を溶解中、結晶粒の粗大化を防止
し、しかも変形させず、またアルカリ融剤に侵蝕されに
＜クシ、高温で揮発、溶出しにくくする為で、Ｐｄ５ｗ
ｔ％未満ではその効果が無く、Ｐ ｄ ９０ｗｔ％を超
えると融点が低くなり、揮発減量が多くなり、また結晶
粒が粗大化し、変形も起すようになるものである。The reason why the composition of the crucible for chemical analysis of the present invention is a Pt alloy made by adding 5 to 90 wt% of Pd to Pt is that it prevents coarsening of crystal grains while dissolving the ore with an alkaline flux, and This is to prevent deformation, to prevent corrosion by alkaline flux, to prevent volatilization and elution at high temperatures, and to prevent Pd5w from being eroded by alkaline flux.
If the P d content is less than t %, there is no effect, and if the P d content exceeds 90 wt %, the melting point becomes low, the amount of loss by volatilization increases, and the crystal grains become coarse and deformation occurs.
（作用）
上記成分組成の本発明の化学分析用るつぼ内に鉱石を入
れて、アルカリ融剤を加え、加熱して鉱石を融成すると
、鉱石の溶解中、るつぼは結晶粒が粗大化せず、変形も
しないものである。また融成物がるつぼ内面に食い付く
ことが無いので、剥離性が良いものである。またアルカ
リ融剤に侵蝕されにくく、高温でも揮発、溶出が抑えら
れて、るつぼ重量の減少が抑制されるものである。(Function) When ore is placed in the crucible for chemical analysis of the present invention having the above-mentioned composition, an alkaline flux is added, and the ore is melted by heating, the crucible does not cause coarse grains while the ore is melting. , which does not undergo any deformation. Furthermore, since the melt does not stick to the inner surface of the crucible, it has good peelability. It is also less likely to be corroded by alkaline fluxes, suppresses volatilization and elution even at high temperatures, and suppresses a decrease in the weight of the crucible.
（実施例）
本発明の化学分析用るつぼの実施例を従来例と共に説明
する。下記の表の実施例１．２の成分組成のロ径φ３６
ｍｍ、高さ４０ｍｍ、底径φ２２ｍａ＋、肉厚０．３ｍ
ｍの化学分析用るつぼ内にアルカリ融剤としてＮａｉＣ
Ｏｓ５ｇを入れ、１２００℃に加熱して１５分間耐薬品
試験を行い、るつぼの減量を測定した処、下記の表の左
欄に示すような結果を得た。また融成物が冷却する迄の
収縮によるるつぼ底面の凹みの表われる融解回数を測定
した処、下記の表の中央欄に示すような結果を得た。さ
らに大気中で１１００℃、１００時間加熱評価した時の
るつぼの減量を測定した処、下記の表の右欄に示すよう
な結果を得た。(Example) An example of the crucible for chemical analysis of the present invention will be described together with a conventional example. Diameter φ36 of the component composition of Example 1.2 in the table below
mm, height 40mm, bottom diameter φ22ma+, wall thickness 0.3m
NaiC as an alkaline flux in a crucible for chemical analysis of
5 g of Os was added to the crucible, heated to 1200° C., a chemical resistance test was conducted for 15 minutes, and the weight loss of the crucible was measured, and the results shown in the left column of the table below were obtained. We also measured the number of melting times at which dents appeared on the bottom of the crucible due to shrinkage until the melt cooled, and the results shown in the center column of the table below were obtained. Furthermore, the weight loss of the crucible was measured when it was evaluated by heating at 1100° C. for 100 hours in the air, and the results shown in the right column of the table below were obtained.
（以下余白）
上記の表で明らかなように従来例の化学分析用るつぼは
、Ｎａ２ＣＯｓ５ｇで１２００℃、１５分間の耐薬品試
験後のるつぼの減量が３７ｍｇもあるのに対し、実施例
１．２の化学分析用るつぼのそれは２５ｍｇ。(Left below) As is clear from the above table, the weight loss of the conventional chemical analysis crucible after the chemical resistance test with 5 g of Na2COs at 1200°C for 15 minutes was 37 mg, whereas in Example 1.2 The amount in the crucible for chemical analysis is 25 mg.
１８ｍｇと著しく抑制されていることが判る。また従来
例の化学分析用るつぼは、融成物が冷却する迄の収縮に
よるるつぼ底面の凹みの表われる融解回数が８回である
のに対し、実施例１．２の化学分析用るつぼのそれは１
６回、２０回と変形しにくいことが判る。さらに従来例
の化学分析用るつぼは、大気中で１１００℃、１００時
間加熱評価した時のるつぼの減量が２．５ｍｇあるのに
対し、実施例１．２の化学分析用るつぼは全く減量せず
、むしろＰｄの酸化により１．０ｍｇ５１．８■増量し
ていた。18 mg, which shows that it is significantly suppressed. In addition, in the conventional chemical analysis crucible, the number of times the molten material is melted is 8 times, when a depression appears on the bottom of the crucible due to contraction until it cools, whereas in the chemical analysis crucible in Example 1.2, 1
It can be seen that it is difficult to deform after 6 or 20 times. Furthermore, the crucible for chemical analysis of the conventional example lost 2.5 mg when heated and evaluated in the atmosphere at 1100°C for 100 hours, whereas the crucible for chemical analysis of Example 1.2 did not lose weight at all. However, the amount increased by 1.0mg51.8cm due to the oxidation of Pd.
（発明の効果）
以上詳記した通り本発明の化学分析用るつぼは、Ｐｔに
Ｐｄ５〜９０ｗｔ％の添加により高温で結晶粒が粗大化
せず、内面が荒れず変化もしないのであるから、アルカ
リ融剤による鉱石の融成において融成物が、るつぼ内面
に食い付くことが無く、剥離性が良好であり、またアル
カリ融剤に侵蝕されにくく、高温でも揮発溶出が抑えら
れてるつぼ重量の減少が抑制される等の効果がある。(Effects of the Invention) As detailed above, in the chemical analysis crucible of the present invention, the crystal grains do not become coarse at high temperatures due to the addition of 5 to 90 wt% Pd to Pt, and the inner surface does not become rough or change. When melting ore with a flux, the melt does not stick to the inner surface of the crucible and has good peelability, is not easily corroded by alkaline flux, and suppresses volatilization and elution even at high temperatures, reducing crucible weight. This has the effect of suppressing
Claims (1)
が、ＰｔにＰｄを５〜９０ｗｔ％添加して成るＰｔ合金
にて作られていることを特徴とする化学分析用るつぼ。1. A crucible for chemical analysis, characterized in that the crucible for chemically analyzing ores using an alkaline flux is made of a Pt alloy made by adding 5 to 90 wt% of Pd to Pt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32834188A JPH02172540A (en) | 1988-12-26 | 1988-12-26 | Crucible for chemical analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32834188A JPH02172540A (en) | 1988-12-26 | 1988-12-26 | Crucible for chemical analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02172540A true JPH02172540A (en) | 1990-07-04 |
Family
ID=18209154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32834188A Pending JPH02172540A (en) | 1988-12-26 | 1988-12-26 | Crucible for chemical analysis |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02172540A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007138768A1 (en) | 2006-05-26 | 2007-12-06 | Nippon Mining & Metals Co., Ltd. | Zirconium crucible for analytical sample melting, method of preparing analytical sample and method of analysis |
| WO2010110064A1 (en) | 2009-03-23 | 2010-09-30 | 日鉱金属株式会社 | Zirconium crucible |
| CN112415049A (en) * | 2020-11-09 | 2021-02-26 | 辽宁红银金属有限公司 | Method for measuring oxygen content in metal rhenium |
-
1988
- 1988-12-26 JP JP32834188A patent/JPH02172540A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007138768A1 (en) | 2006-05-26 | 2007-12-06 | Nippon Mining & Metals Co., Ltd. | Zirconium crucible for analytical sample melting, method of preparing analytical sample and method of analysis |
| WO2010110064A1 (en) | 2009-03-23 | 2010-09-30 | 日鉱金属株式会社 | Zirconium crucible |
| CN112415049A (en) * | 2020-11-09 | 2021-02-26 | 辽宁红银金属有限公司 | Method for measuring oxygen content in metal rhenium |
| CN112415049B (en) * | 2020-11-09 | 2024-03-29 | 辽宁红银金属有限公司 | Method for measuring oxygen content in metal rhenium |
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