JPH0377267B2 - - Google Patents
Info
- Publication number
- JPH0377267B2 JPH0377267B2 JP9532383A JP9532383A JPH0377267B2 JP H0377267 B2 JPH0377267 B2 JP H0377267B2 JP 9532383 A JP9532383 A JP 9532383A JP 9532383 A JP9532383 A JP 9532383A JP H0377267 B2 JPH0377267 B2 JP H0377267B2
- Authority
- JP
- Japan
- Prior art keywords
- manganese
- iron
- flux
- ultra
- metal
- 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.)
- Expired
Links
- 230000004907 flux Effects 0.000 claims description 17
- AMWRITDGCCNYAT-UHFFFAOYSA-L manganese oxide Inorganic materials [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 15
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 14
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 14
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000007800 oxidant agent Substances 0.000 claims description 4
- 150000004820 halides Chemical class 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims 1
- 150000008041 alkali metal carbonates Chemical class 0.000 claims 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims 1
- 150000001340 alkali metals Chemical class 0.000 claims 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 claims 1
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 claims 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 1
- PPNAOCWZXJOHFK-UHFFFAOYSA-N manganese(2+);oxygen(2-) Chemical class [O-2].[Mn+2] PPNAOCWZXJOHFK-UHFFFAOYSA-N 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- 239000011572 manganese Substances 0.000 description 13
- 229910052748 manganese Inorganic materials 0.000 description 7
- 239000002893 slag Substances 0.000 description 7
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 6
- 229910000616 Ferromanganese Inorganic materials 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- -1 aluminum iron-manganese Chemical compound 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- YTNIXZGTHTVJBW-SCRDCRAPSA-N FMNH2 Chemical compound OP(=O)(O)OC[C@@H](O)[C@@H](O)[C@@H](O)CN1C=2C=C(C)C(C)=CC=2NC2=C1NC(=O)NC2=O YTNIXZGTHTVJBW-SCRDCRAPSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010436 fluorite Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Inorganic materials [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- IWTGVMOPIDDPGF-UHFFFAOYSA-N [Mn][Si][Fe] Chemical compound [Mn][Si][Fe] IWTGVMOPIDDPGF-UHFFFAOYSA-N 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
本発明は超低珪素、超低アルミニウム鉄−マン
ガン合金の精製法であつて、その目的とする処
は、簡単な方法で、鉄−マンガン合金中のSi，
Al等の不純物を簡単に除去する方法を提供する
ことにある。
茲に、鉄−マンガン合金とは、通常電気炉で鉄
鉱石とマンガン鉱石を電気炉或いは高炉で製錬さ
れるMn20〜90％、C8％以下残余主としてFeから
なる合金であつて、具体的には、FMnH，
FMnM，FMnL、スピーゲルを指称するもので
あつて、一般にSi8〜1.5％程度含有しているもの
である。
即ち、鉄−マンガン合金は溶鉱炉又は電気炉中
でマンガン鉱石、鉄鉱石、還元剤及び造滓剤等の
原料を投入して溶融還元により製造しているが、
炉内では還元剤で製造された溶融メタル層と溶融
スラグ層とが平衡関係にあり、一定時間毎に炉か
ら出湯し、メタル部とスラグ部とを分離して製造
している。
前記における炉内で平衡関係にある溶融メタル
層中のマンガン、〔Mn〕及び珪素〔Si〕と溶融ス
ラグ中の珪素、（SiO2）とマンガン酸化物
（MnO）との間には次の如き平衡関係がある。
〔Si〕＋２（MnO）＝（SiO2）＋２〔Mn〕
前記式からメタル層中の〔Si〕を除去するため
にはスラグ中に（MnO）が必要であるから、そ
のためにはスラグ中の（MnO）の濃度を極めて
高くする必要があり、この事は必然的にMnの歩
留の低下を生じ、実操業では到底採用することが
不可能である。
その為従来市販されている鉄−マンガン合金
は、高炭素フエロマンガンでは、たかだかSi0.1
〜0.3％、中炭素フエロマンガンでは0.4〜1.0％、
低炭素フエロマンガンでは0.8〜1.3％、スピーゲ
ルでは0.5％程度が限度であつて、さらにSiの低
い製品を得るためには電解金属マンガン又は蒸溜
マンガン等に求めざるを得ないが、これら電解マ
ンガン、蒸溜マンガンは高価となる欠点がある。
本発明者等は以上の如き実情からフエロマンガ
ンの脱珪につき研究の結果、特許請求の範囲に記
載した構成とすることによつて、簡単に鉄−マン
ガン合金の脱珪のみならず同時に脱アルミニウム
を達成し、超低珪素、超低アルミニウム鉄−マン
ガン合金の精製法を得ることができた。
本発明で使用するフラツクスは、酸化剤と融剤
とからなるものであつて、酸化剤としてはアルカ
リ金属の炭酸塩又は鉄若しくはマンガンの酸化物
の１種以上であり、また融剤としてはアルカリ金
属若しくはアルカリ土類金属の酸化物又はハロゲ
ン化物の１種以上からなるものである。
前記フラツクスを具体的に例示すれば、
Na2CO3−NaCl系；K2CO3−KCl系；K2CO3−
NaCl系；MnO2−CaO−CaF2系等であつて、何
れも高塩基度の酸化性フラツクスである。
フラツクスの所要添加量は処理するメタル中の
Si％により異るが、一般的には３〜35％、好まし
くは５〜15％とする。即ち、合金中のSi％が低い
場合フラツクスの添加量は３％で充分効果を発揮
することができ、他方フラツクスの添加量が35％
以上添加しても顕著な効果がなく、徒らにフラツ
クス量が増えると処理が難しくなるばかりか、処
理費が上昇するためである。
前記の如きフラツクスを溶融合金に撹拌混合す
ることによつて、メタル中のSiは殆んど酸化され
てSiO2となり、これがフラツクス中に移行し、
メタル中のSiは0.01％以下の鉄−マンガン合金を
精製することができる。その際メタル中のMnの
歩留は殆んど低下しない。
さらに本発明ではメタル層中に存在するSiのみ
でなく、メタル層中に存在するAlも同時に酸化
されて超低アルミニウム鉄−マンガン合金が精製
できる。
本発明の適用に当り、炉より出湯しスラグを分
離直後の溶湯に適用できることは勿論、鉄−マン
ガン合金を別途溶解炉等で溶融して使用すること
もできる。
また、前記高塩基度の酸化性フラツクスの混合
撹拌に当り、鍋底にポーラスプラグを埋設し、エ
アーブローによつて撹拌混合することによつても
達成できる。
以上の如く本発明は、鉄−マンガン合金の脱珪
に当り、これらの溶湯に高塩基度の酸化性フラツ
クスを撹拌混合すると言う簡単な手段でメタル中
のMnの歩留に影響を与えることなく脱珪するこ
とによつて超低珪素鉄−マンガン合金を精製する
ことができるという効果がある。
また、本発明はメタル中のSiのみならずメタル
中のAlも同時に除去することができ、しかも低
コストで精製することができると言う効果があ
る。
実施例 １
実施方法はフエロマンガン100ｇをアルミナル
ツボを用い20KVA高周波炉で溶解し、1350〜
1400℃迄昇温、所定量のフラツクスを添加し、此
の温度で時々撹拌しながら５分間保持し、此の後
溶解物をアルミナルツボと共に炉外に取出し固
化、冷却後メタルとスラグを分離して分析に供し
た処、表−１の通りである。
The present invention is a method for refining ultra-low silicon and ultra-low aluminum iron-manganese alloys.
The object of the present invention is to provide a method for easily removing impurities such as Al. Furthermore, an iron-manganese alloy is an alloy that is made by smelting iron ore and manganese ore in an electric furnace or a blast furnace, usually consisting of 20 to 90% Mn, 8% or less C, and the remainder mainly Fe. is FMnH,
These refer to FMnM, FMnL, and Spiegel, and generally contain about 8 to 1.5% Si. That is, iron-manganese alloys are manufactured by melting and reducing raw materials such as manganese ore, iron ore, reducing agents, and slag-forming agents in a blast furnace or electric furnace.
Inside the furnace, the molten metal layer produced by the reducing agent and the molten slag layer are in an equilibrium relationship, and the metal portion and the slag portion are separated and manufactured by tapping from the furnace at regular intervals. The following relationship exists between manganese, [Mn], and silicon [Si] in the molten metal layer and silicon, (SiO 2 ), and manganese oxide (MnO) in the molten slag, which are in an equilibrium relationship in the furnace. There is an equilibrium relationship. [Si] + 2 (MnO) = (SiO 2 ) + 2 [Mn] From the above formula, in order to remove [Si] from the metal layer, (MnO) is required in the slag. It is necessary to make the concentration of (MnO) extremely high, which inevitably causes a decrease in the yield of Mn, making it impossible to use it in actual operations. Therefore, conventionally commercially available iron-manganese alloys are high carbon ferromanganese with Si0.1 at most.
~0.3%, 0.4-1.0% for medium carbon ferromanganese,
Low carbon ferromanganese has a limit of 0.8 to 1.3%, and spiegel has a limit of about 0.5%, and to obtain products with even lower Si content, electrolytic manganese or distilled manganese must be used. Manganese has the disadvantage of being expensive. Based on the above-mentioned circumstances, the present inventors have conducted research on desiliconization of ferromanganese, and found that by adopting the structure described in the claims, it is possible to not only desiliconize iron-manganese alloys but also dealuminium at the same time. We were able to obtain a method for purifying ultra-low silicon and ultra-low aluminum iron-manganese alloys. The flux used in the present invention consists of an oxidizing agent and a fluxing agent. It consists of one or more oxides or halides of metals or alkaline earth metals. Specific examples of the flux include:
Na 2 CO 3 −NaCl system; K 2 CO 3 −KCl system; K 2 CO 3 −
NaCl-based; MnO 2 -CaO-CaF 2- based, etc., all of which are oxidizing fluxes with high basicity. The amount of flux required depends on the amount of flux in the metal being processed.
Although it varies depending on the Si%, it is generally 3 to 35%, preferably 5 to 15%. In other words, when the Si% in the alloy is low, the added amount of flux can be sufficiently effective with 3%, while on the other hand, when the added amount of flux is 35%,
This is because there is no significant effect even if the amount of flux is added above, and if the amount of flux is increased unnecessarily, the treatment becomes difficult and the treatment cost increases. By stirring and mixing the flux as described above into the molten alloy, most of the Si in the metal is oxidized to SiO 2 , which is transferred into the flux.
It is possible to refine iron-manganese alloys containing less than 0.01% Si in the metal. In this case, the yield of Mn in the metal hardly decreases. Furthermore, in the present invention, not only Si present in the metal layer but also Al present in the metal layer is oxidized at the same time, making it possible to refine an ultra-low aluminum iron-manganese alloy. In applying the present invention, it is possible not only to apply the molten metal immediately after the slag has been extracted from the furnace but also to melt the iron-manganese alloy separately in a melting furnace or the like. The mixing and stirring of the high basicity oxidizing flux can also be achieved by embedding a porous plug in the bottom of the pot and stirring and mixing by air blowing. As described above, the present invention desiliconizes iron-manganese alloys by simply stirring and mixing oxidizing flux with high basicity into the molten metal without affecting the yield of Mn in the metal. By removing silicon, an ultra-low silicon iron-manganese alloy can be purified. Further, the present invention has the effect that not only Si in the metal but also Al in the metal can be removed at the same time, and furthermore, it can be purified at low cost. Example 1 The method was to melt 100g of ferromanganese in an aluminium crucible in a 20KVA high frequency furnace,
The temperature was raised to 1400℃, a predetermined amount of flux was added, and the temperature was maintained for 5 minutes with occasional stirring.After this, the melt was taken out of the furnace together with the aluminum crucible to solidify, and after cooling, the metal and slag were separated. Table 1 shows the results of the analysis.
【表】【table】
【表】
実施例 ２
フラツクスは、試薬１級のMnO2，CaO，CaF2
を用い、これらの試薬粉末を良く混合し、メタル
に添加した処、表−２の通りである。其の他は実
施例１と全く同様に処理した。[Table] Example 2 The fluxes were MnO 2 , CaO, CaF 2 of first grade reagent.
These reagent powders were mixed well using a , and added to the metal as shown in Table 2. Other than that, the treatment was carried out in exactly the same manner as in Example 1.
【表】【table】
【表】
実施例 ３
酸化剤として高品位マンガン鉱石、融剤として
生石灰及び浮選螢石を使用したほかは実施例１に
準じて処理した。フラツクスの組成を表−３に、
結果を表−４に示す。[Table] Example 3 The procedure of Example 1 was repeated except that high-grade manganese ore was used as the oxidizing agent and quicklime and flotated fluorite were used as the fluxing agent. The composition of the flux is shown in Table 3.
The results are shown in Table 4.
【表】【table】
【表】【table】
【表】
実施例 ４
空気ブロー可能な状態に鍋底にポーラスプラグ
を埋設した高アルミナライジングを施工した5t鍋
に、1450℃に余熱したFMnH約5tを受湯後、900
〜1000℃に予熱したMn鉱−生石灰−螢石系クラ
ツクス500Kgを添加し、約10分間エアーブローし、
除滓後カーボンレンガ鋳床に鋳造した。結果を表
−５に示す。[Table] Example 4 After receiving approximately 5 tons of FMnH preheated to 1450°C into a 5t pot with high aluminization with a porous plug buried in the bottom of the pot so that it can be blown with air, the water was heated to 900℃.
Add 500 kg of Mn ore-quicklime-fluorite-based cracks preheated to ~1000℃, air blow for about 10 minutes,
After removing the slag, it was cast in a carbon brick cast bed. The results are shown in Table-5.
【表】【table】
Claims (1)
しくはマンガンの酸化物の１種以上、融剤として
アルカリ金属若しくはアルカリ土類金属の酸化物
又はハロゲン化物の１種以上からなる前記酸化剤
と融剤とから構成するフラツクスを、鉄−マンガ
ン合金溶湯と撹拌接触して、鉄−マンガン合金中
のSi0.01％以下、Al0.001％以下とすることを特
徴とする超低珪素、超低アルミニウム鉄−マンガ
ン合金の精製法。1. The oxidizing agent and the fluxing agent are composed of one or more alkali metal carbonates or iron or manganese oxides as the oxidizing agent, and one or more alkali metal or alkaline earth metal oxides or halides as the fluxing agent. Ultra-low silicon, ultra-low aluminum iron, characterized in that the flux consisting of is brought into stirring contact with a molten iron-manganese alloy to reduce Si to 0.01% or less and Al to 0.001% or less in the iron-manganese alloy. A method for refining manganese alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9532383A JPS59222551A (en) | 1983-05-30 | 1983-05-30 | Method for refining iron-manganese alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9532383A JPS59222551A (en) | 1983-05-30 | 1983-05-30 | Method for refining iron-manganese alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59222551A JPS59222551A (en) | 1984-12-14 |
| JPH0377267B2 true JPH0377267B2 (en) | 1991-12-10 |
Family
ID=14134525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9532383A Granted JPS59222551A (en) | 1983-05-30 | 1983-05-30 | Method for refining iron-manganese alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59222551A (en) |
-
1983
- 1983-05-30 JP JP9532383A patent/JPS59222551A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59222551A (en) | 1984-12-14 |
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