JPH0830227B2 - Vacuum suction type degasser - Google Patents
Vacuum suction type degasserInfo
- Publication number
- JPH0830227B2 JPH0830227B2 JP2158324A JP15832490A JPH0830227B2 JP H0830227 B2 JPH0830227 B2 JP H0830227B2 JP 2158324 A JP2158324 A JP 2158324A JP 15832490 A JP15832490 A JP 15832490A JP H0830227 B2 JPH0830227 B2 JP H0830227B2
- Authority
- JP
- Japan
- Prior art keywords
- melt
- porous member
- gas
- porous
- vacuum
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/04—Refining by applying a vacuum
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は多孔質部材を介して、溶融金属、溶融マット
及び溶融スラグ等の融体から、ガス相を生成する溶質成
分を除去し、又は回収する真空吸引式脱ガス装置に関
し、特に融体浴の深さが浅い場合に好適の真空吸引式脱
ガス装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention removes a solute component that generates a gas phase from a melt such as a molten metal, a molten mat and a molten slag via a porous member, or The present invention relates to a vacuum suction type degassing device, and particularly to a vacuum suction type degassing device suitable when the depth of the melt bath is shallow.
［従来の技術］ 溶融金属、溶融マット及び溶融スラグ等の融体から、
ガス相を生成する溶質成分を除去し、又は回収する技術
として、従来、RH法及びDH法等の脱ガス法がある。この
RH法及びDH法は、真空下又は減圧下において溶湯中に大
量のアルゴンガスを吹き込み、溶湯中のガス成分の分圧
を低下させてこのガス成分を除去している。[Prior Art] From melts such as molten metal, molten mat and molten slag,
Conventionally, there are degassing methods such as the RH method and the DH method as a technology for removing or recovering a solute component that produces a gas phase. this
In the RH method and the DH method, a large amount of argon gas is blown into the molten metal under vacuum or reduced pressure to reduce the partial pressure of the gas component in the molten metal to remove this gas component.
［発明が解決しようとする課題］ しかしながら、この従来のRH法及びDH法による脱ガス
法は、大量のアルゴンガスを使用するため、ランニング
コストが高いという欠点がある。また、大量のアルゴン
ガスを溶湯中に吹き込むので、溶湯からスプラッシュが
発生し易く、装置の壁面等に地金が付着し、その除去作
業が煩雑である。更に、このスプラッシュが発生するた
め、装置を大型にせざるを得ず、装置コストも高い。[Problems to be Solved by the Invention] However, the conventional degassing method using the RH method and the DH method has a drawback that the running cost is high because a large amount of argon gas is used. In addition, since a large amount of argon gas is blown into the molten metal, splash is likely to occur from the molten metal, and the metal is attached to the wall surface of the apparatus and the removal work thereof is complicated. Further, since this splash occurs, the device has to be large in size, and the device cost is high.
本発明はかかる問題点に鑑みてなされたものであっ
て、融体中のガス成分を大量のアルゴンガスを使用する
ことなく、容易に除去することができ、融体の脱ガスを
簡素な装置で低コストで実施することができる真空吸引
式脱ガス装置を提供することを目的とする。The present invention has been made in view of such problems, and the gas component in the melt can be easily removed without using a large amount of argon gas, and the degassing of the melt is a simple apparatus. It is an object of the present invention to provide a vacuum suction type degassing device that can be implemented at low cost.
［課題を解決するための手段］ 本発明に係る真空吸引式脱ガス装置は、融体を収納し
た収納容器と、融体中の不純物元素と反応してガスを生
じる成分を含有する材料であってガスを透過するが融体
は透過しない多孔質材料により形成されその１部分が前
記収納容器内の前記融体に浸漬された多孔質部材と、前
記融体の湯面上の部分の前記多孔質部材を真空又は減圧
状態におき前記融体中の不純物成分と前記多孔質部材の
成分との反応により生じたガスを前記多孔質部材を介し
て吸引する吸引手段とを有することを特徴とする。[Means for Solving the Problems] A vacuum suction type degassing apparatus according to the present invention is a material containing a container for housing a melt and a component that reacts with an impurity element in the melt to generate gas. And a porous member formed of a porous material that allows gas to pass therethrough but does not allow the melt to pass, and one portion of which is immersed in the melt in the storage container, and the porosity of a portion on the molten metal surface of the melt. A vacuum member or a vacuum member, and a suction means for sucking a gas generated by a reaction between an impurity component in the melt and a component of the porous member through the porous member. .
［作用］ 第３図は本発明の原理を示す模式図である。多孔質部
材１は、ガスのみを透過し、溶融金属、溶融マット及び
溶融スラグ等の融体は透過しない多孔質材料からなる部
材である。そして、この多孔質部材１の一方の面に前記
融体２を接触させ、他方の面を真空又は減圧雰囲気３に
した場合に、融体２と接触した壁面では融体２の静圧に
無関係に圧力が低下する。[Operation] FIG. 3 is a schematic view showing the principle of the present invention. The porous member 1 is a member made of a porous material that allows only gas to pass therethrough and does not allow a molten material such as molten metal, molten mat and molten slag to pass through. When the melt 2 is brought into contact with one surface of the porous member 1 and the other surface is placed in a vacuum or reduced pressure atmosphere 3, the static pressure of the melt 2 is irrelevant on the wall surface in contact with the melt 2. The pressure drops to.
このため、融体２中の不純物成分又は回収する価値が
ある有価成分であって、ガス相を生成するものは、容易
に多孔質部材１の壁面で核生成し、生成したガス４は多
孔質部材１を透過して融体２から分離される。Therefore, an impurity component in the melt 2 or a valuable component that has a value to be recovered and that produces a gas phase easily nucleates on the wall surface of the porous member 1, and the produced gas 4 is porous. It penetrates through the member 1 and is separated from the melt 2.
本願発明者等はこのような原理に基づいて融体中から
ガス成分を除去できることに想到し、本発明を完成させ
るに至ったものである。The inventors of the present application have realized that the gas component can be removed from the melt based on such a principle, and have completed the present invention.
而して、融体中に溶解しているガス生成成分は下記の
反応式により、ガスとなって除去される。N ＋N→N2 …（１）H ＋H→H2 …（２）C ＋O→CO …（３） S＋２O→SO2 …（４） また、融体中の不純物が多孔質部材の成分と反応して
ガスとなった後、前記多孔質部材を透過して除去される
こともある。Thus, the gas generating component dissolved in the melt is removed as a gas by the following reaction formula. N + N → N 2 ... (1) H + H → H 2 ... (2) C + O → CO ... (3) S + 2 O → SO 2 ... (4) Moreover, impurities in the melt are porous members. After reacting with the component to form a gas, it may be removed by permeating through the porous member.
多孔質部材が酸化物（MXOY）の場合には、融体中の炭
素は下記反応式によりガスとなって除去される。When the porous member is an oxide (M X O Y ), carbon in the melt is removed as a gas by the following reaction formula.
ｙC＋MXOY（固体）→ｘM＋yCO …（５） また、多孔質部材が炭素で構成されているか、又は炭
素を１成分として含有している場合には、下記反応式に
より融体中の酸素が除去される。O ＋Ｃ（固体）→CO …（６） 更に、融体中の蒸気圧が高い有価成分（Ｍ）の分離回
収は下記反応式により前記有価成分をガス化することに
より行なわれる。y C + M X O Y (solid) → x M + yCO (5) Further, when the porous member is composed of carbon or contains carbon as one component, the melt is obtained by the following reaction formula. The oxygen inside is removed. O + C (solid) → CO (6) Further, the valuable component (M) having a high vapor pressure in the melt is separated and recovered by gasifying the valuable component according to the following reaction formula.
xM→MX（ガス） …（７） MOY→MOY（ガス） …（８） MSY→MSY（ガス） …（９） このようにして、融体中のN,H,C,O及びＳ等の不純物
成分及び有価成分が融体中から除去され、又は回収され
る。xM → M X (gas)… (7) MO Y → MO Y (gas)… (8) MS Y → MS Y (gas)… (9) Thus, N, H, C, Impurity components such as O and S and valuable components are removed or recovered from the melt.
本願の第１発明においては、多孔質部材の１部分を収
納容器内の融体中に浸漬し、湯面上の部分の前記多孔質
部材を真空又は減圧状態におく。そうすると、多孔質部
材は融体を透過しないため、この多孔質部材が有してい
る細孔の内部が真空又は減圧状態になる。そして、多孔
質部材の成分と融体との反応により生成したガスは、多
孔質部材の細孔を通過し、融体から分離される。その
後、このガスは前記多孔質部材を介して、吸引手段によ
り吸引される。このようにして、融体中の脱ガス成分を
融体から分離することができる。In the first invention of the present application, one portion of the porous member is immersed in the melt in the container, and the porous member above the molten metal surface is placed in a vacuum or reduced pressure state. Then, since the porous member does not pass through the melt, the inside of the pores of the porous member is in a vacuum or reduced pressure state. Then, the gas generated by the reaction between the components of the porous member and the melt passes through the pores of the porous member and is separated from the melt. Then, this gas is sucked by the suction means through the porous member. In this way, the degassed components in the melt can be separated from the melt.
また、本願の第２発明においては、筒状の緻密質部材
の下端部に多孔質部材が嵌入されており、この緻密質部
材から露出した部分の多孔質部材が収納容器内の融体中
に浸漬されている。そして、前記緻密質部材の内部を真
空又は減圧状態にすると、多孔質部材の成分と融体との
反応により生成したガスは、多孔質部材の細孔を通過
し、緻密質部材の内部に放出される。その後、このガス
は吸引手段により吸引される。このようにして、融体中
の脱ガス成分を融体から分離することができる。この場
合に、前記多孔質部材は前記緻密質部材から露出した部
分が前記融体中に浸漬されていればよいため、収納容器
内の融体深さが比較的浅くても、融体の脱ガス処理が可
能である。Further, in the second invention of the present application, the porous member is fitted into the lower end portion of the cylindrical dense member, and the portion of the porous member exposed from the dense member is contained in the melt in the storage container. It is immersed. Then, when the inside of the dense member is placed in a vacuum or a reduced pressure state, the gas generated by the reaction between the components of the porous member and the melt passes through the pores of the porous member and is released inside the dense member. To be done. Then, this gas is sucked by the suction means. In this way, the degassed components in the melt can be separated from the melt. In this case, the porous member has only to have the portion exposed from the dense member immersed in the melt, so that even if the melt depth in the storage container is relatively shallow, the melt is removed. Gas processing is possible.
更に、本願第１及び第２発明においては、対象とする
融体中の不純物又は有価成分に応じて、これらの不純物
又は有価成分と反応する多孔質部材中の成分の濃度を調
整することにより、融体中の不純物又は有価成分と多孔
質部材との反応速度を制御することもできる。Furthermore, in the first and second inventions of the present application, according to the impurities or valuable components in the target melt, by adjusting the concentrations of the components in the porous member that react with these impurities or valuable components, It is also possible to control the reaction rate of impurities or valuable components in the melt with the porous member.
なお、雰囲気及び収納容器への放熱による融体の温度
の低下、多孔質部材を融体に浸漬することによる融体の
温度の低下及び多孔質部材の成分と融体との吸熱反応に
よる融体の温度の低下等に起因する不都合の発生を回避
するために、多孔質部材に通電するか、予め多孔質部材
に抵抗線を埋設しこの抵抗線に通電するか又は外部加熱
（例えば、プラズマ加熱）する等の方法により多孔質部
材及び融体を加熱することができる加熱手段を設けてお
いてもよい。It should be noted that the temperature of the melt is lowered due to heat dissipation to the atmosphere and the storage container, the temperature of the melt is lowered by immersing the porous member in the melt, and the melt due to the endothermic reaction between the components of the porous member and the melt. In order to avoid the occurrence of inconvenience due to a decrease in the temperature of the porous member, the porous member is energized, a resistance wire is embedded in the porous member in advance and the resistance wire is energized, or external heating (for example, plasma heating) is performed. A heating means capable of heating the porous member and the melt may be provided by a method such as
多孔質材料としては、Al2O3、MgO、CaO、SiO2、Fe
2O3、Fe3O4、Cr2O3、BN、Si3N4並びにSiC及びＣ等の金属
酸化物、金属非酸化物及び炭素並びにこれらの混合物
等、種々のものを使用することができるが、融体の主成
分と反応しないものが好ましい。このように、主成分と
反応しないことにより、融体と接触する多孔質部材の溶
損が防止される。As the porous material, Al 2 O 3 , MgO, CaO, SiO 2 , Fe
It is possible to use various materials such as 2 O 3 , Fe 3 O 4 , Cr 2 O 3 , BN, Si 3 N 4 and metal oxides such as SiC and C, metal non-oxides, carbon and mixtures thereof. However, those which do not react with the main component of the melt are preferable. In this way, by not reacting with the main component, melting damage of the porous member in contact with the melt is prevented.
また、ガスのみを透過させ、融体は透過させないよう
にするため、融体に濡れにくい多孔質材料の仕切り部材
を使用する。更に、仕切り部材の気孔率は、40％以下に
することが好ましい。更にまた、仕切り部材の融体への
濡れ性によっても異なるが、仕切り部材の気孔径は約20
0μｍ以下とすることが好ましい。Further, in order to allow only the gas to pass through and not the melt to pass through, a partition member made of a porous material that is difficult to wet the melt is used. Further, the porosity of the partition member is preferably 40% or less. Furthermore, although it depends on the wettability of the partition member to the melt, the pore size of the partition member is about 20.
The thickness is preferably 0 μm or less.
更にまた、多孔質浸漬管へ融体が侵入しても、真空系
へ融体が入るのを防止するため、圧力損失が小さいフィ
ルタを多孔質浸漬管上部に設置し、侵入した融体をこの
フィルタで凝固させ、トラップするようにすることが好
ましい。Furthermore, even if the melt enters the porous immersion pipe, in order to prevent the melt from entering the vacuum system, a filter with a small pressure loss is installed above the porous immersion pipe, It is preferable that the filter is solidified and trapped.
次に、本発明を融体からのガス生成成分の除去回収に
適用した用途例について説明する。Next, a description will be given of an application example in which the present invention is applied to the removal and recovery of the gas generating component from the melt.
先ず、本発明を、溶鉄から炭素、窒素又は水素を除
去する脱炭素、脱窒素及び脱水素の工程に使用すること
ができる。First, the present invention can be used in the steps of decarbonization, denitrification and dehydrogenation for removing carbon, nitrogen or hydrogen from molten iron.
溶鉄中の炭素の除去に本法を使用する場合、前記仕切
り部材の主成分はAl2O3又はMgO等とし、溶鉄中の炭素の
主酸化剤としてFe2O3,Fe3O4,MnO,SiO2等を配合する。こ
れらの主酸化剤の配合割合を高くすることにより、溶鉄
中の炭素の除去速度を増加させることができる。しか
し、主酸化剤の配合割合をあまり高くすると、仕切り部
材の融点の低下又は機械的強度の低下等を招き、また特
に溶鉄中の炭素濃度が低い場合には溶鉄中の酸素濃度が
増加するため、目的に応じて主酸化剤の配合割合を既に
確立されている状態図を参考にして決定する。When this method is used to remove carbon in molten iron, the main component of the partition member is Al 2 O 3 or MgO, and Fe 2 O 3 , Fe 3 O 4 , MnO as the main oxidant for carbon in molten iron. , SiO 2 and the like are mixed. By increasing the blending ratio of these main oxidizing agents, the removal rate of carbon in molten iron can be increased. However, if the blending ratio of the main oxidant is too high, the melting point of the partition member or the mechanical strength is lowered, and especially when the carbon concentration in the molten iron is low, the oxygen concentration in the molten iron increases. Depending on the purpose, determine the blending ratio of the main oxidizer with reference to the already established phase diagram.
一方、溶鉄中の窒素の除去に本法を使用する場合、前
記仕切り部材には、安定な酸化物、例えばCaO,Al2O3,Mg
O等を使用する。On the other hand, when this method is used to remove nitrogen in molten iron, the partition member has a stable oxide, such as CaO, Al 2 O 3 , Mg.
Use O etc.
また、溶鉄中の炭素及び窒素を同時に除去するために
本法を使用する場合、溶鉄中の炭素及び窒素の目標濃度
に応じて前記主酸化剤の配合割合を変化させる。When the present method is used to remove carbon and nitrogen in molten iron at the same time, the blending ratio of the main oxidant is changed according to the target concentration of carbon and nitrogen in molten iron.
また、本発明を、溶銅中から酸素を除去する脱酸工
程にも適用することができる。Further, the present invention can also be applied to a deoxidation step of removing oxygen from molten copper.
更に、本発明は溶融アルミニウム中から水素を除去
する脱水素工程にも適用することができる。Furthermore, the present invention can be applied to a dehydrogenation step of removing hydrogen from molten aluminum.
更にまた、本発明を、溶融シリコンの脱炭素、脱窒
素及び脱水素に適用することができる。Furthermore, the present invention can be applied to decarbonization, denitrification and dehydrogenation of molten silicon.
一方、本発明により、溶融鉛中の亜鉛を回収するこ
とができる。On the other hand, according to the present invention, zinc in molten lead can be recovered.
溶融銅マットから硫黄及び酸素を除去する脱硫黄・
脱酸素の工程に本発明を適用することもできる。Desulfurization to remove sulfur and oxygen from molten copper mat
The present invention can also be applied to the deoxidation step.
そして、溶融銅マット又はニッケルマット中の有価
金属（As,Sb,Bi,Se,Te,Pb,Cd等）の回収にも本発明を適
用することができる。The present invention can also be applied to the recovery of valuable metals (As, Sb, Bi, Se, Te, Pb, Cd, etc.) in the molten copper mat or nickel mat.
更に、溶融スラグ中から有価金属（As,Sb,Bi,Se,T
e,Pb,Cd,Zn等）を回収する場合にも、本発明を適用する
ことができる。Furthermore, valuable metals (As, Sb, Bi, Se, T
The present invention can also be applied to the case of recovering e, Pb, Cd, Zn, etc.).
［実施例］ 次に、本発明の実施例について添付の図面を参照して
説明する。[Embodiment] Next, an embodiment of the present invention will be described with reference to the accompanying drawings.
第１図は本願の第１発明の実施例に係る真空吸引式脱
ガス装置を示す模式的断面図である。FIG. 1 is a schematic sectional view showing a vacuum suction type degassing apparatus according to an embodiment of the first invention of the present application.
融体２は収納容器５に収納されており、この融体２内
に多孔質部材６の下半部が浸漬されている。この多孔質
部材８は棒状体であり、この多孔質部材６はガスは透過
するが、溶融金属、溶融スラグ及び溶融マット等の融体
２は侵入できないような細孔を有していて、この融体２
は透過しない多孔質の材料で成形されている。The melt 2 is contained in a container 5, and the lower half of the porous member 6 is immersed in the melt 2. The porous member 8 is a rod-shaped member, and the porous member 6 has pores through which the gas can permeate but the molten material 2 such as molten metal, molten slag, and molten mat cannot penetrate. Melt 2
Is made of a porous material that is impermeable.
この収納容器５は減圧容器（図示せず）内に載置され
ており、この減圧容器内は真空ポンプにより真空吸引さ
れて、真空又は減圧状態になっている。The storage container 5 is placed in a decompression container (not shown), and the decompression container is vacuumed by a vacuum pump to be in a vacuum or decompressed state.
このように構成された真空吸引式脱ガス装置において
は、融体２は多孔質部材６に浸透しないが、多孔質部材
６の細孔に含まれているガスは減圧容器内に放出される
ため、多孔質部材６の細孔内は真空又は減圧状態にな
る。これにより、融体２中のガス又は多孔質部材の成分
と融体との反応により生成したガスは多孔質部材６の細
孔を通過し、減圧容器内の真空又は減圧雰囲気中に放出
される。そして、このガスは前記真空ポンプに吸引され
て、減圧容器内から除去される。In the vacuum suction type degassing device configured as described above, the melt 2 does not permeate into the porous member 6, but the gas contained in the pores of the porous member 6 is released into the decompression container. The inside of the pores of the porous member 6 is in a vacuum or reduced pressure state. As a result, the gas in the melt 2 or the gas generated by the reaction between the components of the porous member and the melt passes through the pores of the porous member 6 and is released into the vacuum or the reduced pressure atmosphere in the decompression container. . Then, this gas is sucked by the vacuum pump and removed from the decompression container.
第２図は本願の第２発明の実施例に係る真空吸引式脱
ガス装置を示す模式的断面図である。FIG. 2 is a schematic sectional view showing a vacuum suction type degassing apparatus according to an embodiment of the second invention of the present application.
融体２は収納容器５に収納されている。多孔質部材6a
は棒状体であり、筒状の緻密質部材８の下端部に液密的
に嵌入されている。多孔質部材6aはガスは透過するが、
溶融金属、溶融スラグ及び溶融マット等の融体２は侵入
できないような細孔を有していて、この融体２は透過し
ない多孔質の材料で成形されている。また、緻密質部材
８はガスを透過しない緻密質の部材により成形されてお
り、適宜の真空ポンプ（図示せず）に接続されている。The melt 2 is stored in a storage container 5. Porous member 6a
Is a rod-shaped body, and is fitted in a liquid-tight manner at the lower end of the cylindrical dense member 8. The porous member 6a is permeable to gas,
The melt 2 such as molten metal, molten slag, and molten mat has pores that cannot penetrate, and the melt 2 is formed of a porous material that does not penetrate. The dense member 8 is formed of a dense member that does not allow gas to permeate, and is connected to an appropriate vacuum pump (not shown).
このように構成された真空吸引式脱ガス装置において
は、緻密質部材８の内部を真空又は減圧状態にすると、
多孔質部材6aの細孔内は真空又は減圧状態になる。これ
により、融体２中のガス生成成分は多孔質部材6aの細孔
を通過して緻密質部材８内に排出される。そして、この
ガス生成成分は前記真空ポンプに吸引されて、回収又は
排気される。In the vacuum suction type degassing apparatus configured as described above, when the inside of the dense member 8 is evacuated or depressurized,
The inside of the pores of the porous member 6a is in a vacuum or reduced pressure state. As a result, the gas generating component in the melt 2 passes through the pores of the porous member 6a and is discharged into the dense member 8. Then, this gas generating component is sucked by the vacuum pump and recovered or exhausted.
本実施例においても、緻密質部材８から露出した部分
の多孔質部材6aが融体２中に浸漬されていればよく、融
体浴の深さが浅い場合も、融体の脱ガス処理が可能であ
る。Also in this embodiment, the porous member 6a of the portion exposed from the dense member 8 may be immersed in the melt 2, and the degassing treatment of the melt may be performed even when the depth of the melt bath is shallow. It is possible.
［発明の効果］ 以上説明したように本発明によれば、ガスを透過する
が融体は透過しない多孔質材料により成形された多孔質
部材の１部分を融体中に浸漬し、湯面上の部分の前記多
孔質部材を真空又は減圧下において、前記融体と前記多
孔質部材との反応により生じたガスを前記多孔質部材を
介して吸引手段により吸引するか、又はその下端部に多
孔質部材が嵌入された筒状の緻密質部材の下端部を融体
中に浸漬すると共に前記緻密質部材の内部を真空又は減
圧状態にし、前記融体と前記多孔質部材との反応により
生じたガスを前記多孔質部材を介して吸引手段により吸
引するから、ガス相を生成する融体中の溶質成分を容易
に真空又は減圧雰囲気中に移動させることができる。[Effects of the Invention] As described above, according to the present invention, a portion of a porous member formed of a porous material that is permeable to gas but not permeable to the melt is immersed in the melt, Under a vacuum or reduced pressure of the porous member of the portion, the gas generated by the reaction of the melt and the porous member is sucked by the suction means through the porous member, or the lower end of the porous member The lower end of the cylindrical dense member in which the porous member is inserted is immersed in the melt and the inside of the dense member is placed in a vacuum or reduced pressure state, and the reaction is caused between the melt and the porous member. Since the gas is sucked through the porous member by the suction means, the solute component in the melt that forms the gas phase can be easily moved into a vacuum or reduced pressure atmosphere.
そして、大量のアルゴンガスを吹き込む従来の脱ガス
法と異なり、本発明はアルゴンガスを吹き込まないか、
又は溶湯攪拌用に少量のアルゴンガスを吹き込めば足
り、アルゴンガスの使用原単位を著しく低減することが
できる。また、アルゴンガスの使用量が極めて少ないこ
とから、スプラッシュの発生が抑制され、装置の壁面へ
の地金の付着を低減することができる。従って、本発明
により、装置の小型化により装置コストを低減すること
ができると共に、装置のランニングコストの著しい低減
を実現することができる。And, unlike the conventional degassing method of blowing a large amount of argon gas, the present invention does not blow argon gas,
Alternatively, it is sufficient to blow a small amount of argon gas for stirring the molten metal, and the unit consumption of argon gas can be significantly reduced. Moreover, since the amount of argon gas used is extremely small, the generation of splash is suppressed, and the adhesion of metal to the wall surface of the apparatus can be reduced. Therefore, according to the present invention, the device cost can be reduced by downsizing the device, and the running cost of the device can be significantly reduced.
第１図は本願の第１発明の実施例に係る真空吸引式脱ガ
ス装置を示す模式的断面図、第２図は本願の第２発明の
実施例に係る真空吸引式脱ガス装置を示す模式的断面
図、第３図は本発明の原理を示す模式図である。 1,6,6a;多孔質部材、2;融体、3;真空又は減圧雰囲気、
4;ガス、5;収納容器、8;緻密質部材FIG. 1 is a schematic sectional view showing a vacuum suction type degassing apparatus according to an embodiment of the first invention of the present application, and FIG. 2 is a schematic showing a vacuum suction type degassing apparatus according to the embodiment of the second invention of the present application. FIG. 3 is a schematic view showing the principle of the present invention. 1,6,6a; porous member, 2; melt, 3; vacuum or reduced pressure atmosphere,
4; gas, 5; storage container, 8; dense member
フロントページの続き (72)発明者 山本 君二 岐阜県多治見市旭ケ丘10―２―127 (56)参考文献 特開 昭52−78602（ＪＰ，Ａ)Front Page Continuation (72) Inventor Kimiji Yamamoto 10-2-127 Asahigaoka, Tajimi City, Gifu Prefecture (56) References JP-A-52-78602 (JP, A)
Claims (3)
物元素と反応してガスを生じる成分を含有する材料であ
ってガスを透過するが融体は透過しない多孔質材料によ
り形成されその１部分が前記収納容器内の前記融体に浸
漬された多孔質部材と、前記融体の湯面上の部分の前記
多孔質部材を真空又は減圧状態におき前記融体中の不純
物成分と前記多孔質部材の成分との反応により生じたガ
スを前記多孔質部材を介して吸引する吸引手段とを有す
ることを特徴とする真空吸引式脱ガス装置。1. A container containing a melt, and a material containing a component that reacts with an impurity element in the melt to generate a gas and is permeable to the gas but not to the melt. The porous member whose one part is immersed in the melt in the storage container and the porous member in the portion on the molten metal surface of the melt are placed in a vacuum or a reduced pressure state, and the impurity component in the melt And a suction means for sucking a gas generated by the reaction of the components of the porous member through the porous member, the vacuum suction type degassing device.
部材と、融体中の不純物元素と反応してガスを生じる成
分を含有する材料であってガスを透過するが融体は透過
しない多孔質材料により形成され前記緻密質部材の下端
部に嵌入されて前記収納容器内の前記融体中に浸漬され
る多孔質部材と、前記緻密質部材の内側を真空又は減圧
状態にし前記融体中の不純物成分と前記多孔質部材の成
分との反応により生じたガスを前記多孔質部材を介して
吸引する吸引手段とを有することを特徴とする真空吸引
式脱ガス装置。2. A material containing a container for containing a melt, a cylindrical dense member, and a component which reacts with an impurity element in the melt to generate a gas, which is permeable to the gas, Is a porous material that is formed of a non-permeable porous material, is fitted into the lower end of the dense member and is immersed in the melt in the storage container, and the inside of the dense member is placed in a vacuum or reduced pressure state. A vacuum suction type degassing apparatus comprising: a suction means for sucking a gas generated by a reaction between an impurity component in the melt and a component of the porous member through the porous member.
段を有することを特徴とする請求項１又は２に記載の真
空吸引式脱ガス装置。3. The vacuum suction type degassing apparatus according to claim 1, further comprising heating means for electrically heating the porous member.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2158324A JPH0830227B2 (en) | 1990-06-16 | 1990-06-16 | Vacuum suction type degasser |
| CA 2044725 CA2044725A1 (en) | 1990-06-16 | 1991-06-17 | Vacuum-suction degassing apparatus |
| EP91109888A EP0462537A1 (en) | 1990-06-16 | 1991-06-17 | Vacuum-suction degassing apparatus |
| US08/073,660 US5346185A (en) | 1990-06-16 | 1993-06-08 | Vacuum-suction degassing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2158324A JPH0830227B2 (en) | 1990-06-16 | 1990-06-16 | Vacuum suction type degasser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0448025A JPH0448025A (en) | 1992-02-18 |
| JPH0830227B2 true JPH0830227B2 (en) | 1996-03-27 |
Family
ID=15669154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2158324A Expired - Lifetime JPH0830227B2 (en) | 1990-06-16 | 1990-06-16 | Vacuum suction type degasser |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0462537A1 (en) |
| JP (1) | JPH0830227B2 (en) |
| CA (1) | CA2044725A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007016891A (en) * | 2005-07-07 | 2007-01-25 | Noritz Corp | Air vent valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2752233A (en) * | 1948-03-08 | 1956-06-26 | Saint Gobain | Method for extracting simple elements from fusible materials containing them |
| AT188038B (en) * | 1954-09-11 | 1956-12-27 | Roland Dr Mitsche | Process for degassing liquids, in particular metallic melts |
| GB829777A (en) * | 1955-08-09 | 1960-03-09 | Fischer Ag Georg | Improvements in or relating to processes for refining liquid melts by degasification, and to apparatus for carrying such processes into effect |
| JPS5278602A (en) * | 1975-12-25 | 1977-07-02 | Toyota Motor Corp | Vacuum degassing of molten metal |
-
1990
- 1990-06-16 JP JP2158324A patent/JPH0830227B2/en not_active Expired - Lifetime
-
1991
- 1991-06-17 CA CA 2044725 patent/CA2044725A1/en not_active Abandoned
- 1991-06-17 EP EP91109888A patent/EP0462537A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CA2044725A1 (en) | 1991-12-17 |
| EP0462537A1 (en) | 1991-12-27 |
| JPH0448025A (en) | 1992-02-18 |
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