JPH02290930A - Method and apparatus for feeding gas into molten metal - Google Patents
Method and apparatus for feeding gas into molten metalInfo
- Publication number
- JPH02290930A JPH02290930A JP2035986A JP3598690A JPH02290930A JP H02290930 A JPH02290930 A JP H02290930A JP 2035986 A JP2035986 A JP 2035986A JP 3598690 A JP3598690 A JP 3598690A JP H02290930 A JPH02290930 A JP H02290930A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- gas
- media distributor
- passageway
- passage
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 56
- 239000002184 metal Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims description 13
- 239000000919 ceramic Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 47
- 238000002347 injection Methods 0.000 description 14
- 239000007924 injection Substances 0.000 description 14
- 239000002585 base Substances 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000005441 aurora Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- -1 freon Chemical compound 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
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
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Mold Materials And Core Materials (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Nozzles (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、ガスを溶融金属の中へ注入する技術に関し、
更に詳細には、通路を通して液送される溶融金属の中へ
ガスを均一に注入する技術に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a technique for injecting gas into molten metal.
More particularly, the present invention relates to techniques for uniformly injecting gas into molten metal being pumped through a passageway.
［従来の技術コ
溶融金属を処理している際、時にはガスでその金属を処
理することが必要である。例えば、水素ガス、非金属含
有物、及びアルカリ金属のような望ま．シ＜ない成分を
除去するために窒素、塩素、及びアルゴンのようなガス
を溶融アルミニウム及び溶融アルミニウム合金の中へ注
入するのが普通である。溶融金属に加えられたガスは、
望ましくない成分と化学的に反応して、これらの成分を
溶融金属の残部から容易に分離できる形態（沈澱物、浮
きかす、或いは不溶性ガス混合物のような）に変換させ
る。[Prior Art] When processing molten metal, it is sometimes necessary to treat the metal with a gas. For example, hydrogen gas, nonmetallic inclusions, and alkali metals. It is common to inject gases such as nitrogen, chlorine, and argon into molten aluminum and molten aluminum alloys to remove undesirable components. The gas added to the molten metal is
It chemically reacts with the undesirable components to convert them into a form (such as a precipitate, float, or insoluble gas mixture) that can be easily separated from the rest of the molten metal.
本明細書で用いられる「溶融金属」は、ガス精製を受け
入れるアルミニウム、マグネシウム、銅、鉄、及びそれ
らの合金のような金属を意味すると理解されよう。更に
、用語「ガス」は、これを混合する溶融金属に精製作用
を及ぼすアルゴン、窒素、塩素、フレオン、六フッ化硫
黄、等を含む任意のガス又はガスの混合物を意味するも
のと理解されよう。As used herein, "molten metal" will be understood to mean metals such as aluminum, magnesium, copper, iron, and alloys thereof that are amenable to gas purification. Furthermore, the term "gas" will be understood to mean any gas or mixture of gases, including argon, nitrogen, chlorine, freon, sulfur hexafluoride, etc., which has a refining effect on the molten metal with which it is mixed. .
溶融金属を反射炉内で溶かす特定の場合には、典型的に
はガスの注入は溶融金属ポンプを溶融金属の中へ沈める
ことにより、そしてガスを導管を通してポンプの出口通
路の中へ注入することにより成し遂げられる。説明した
形式の適当なガス注入ポンプが、モデル名称Ｍ３ ０−
ＣＳＤ−Ｃ Ｌ、等のもとにメタリックスシステムズ（
Ｍｅｔａｕｌｌｉｅｓ Ｓｙｓｔｅｍｓ）３１９３５
オーロラロード、ソロン、オハイオ ４４１３９から商
業的に入手できる。引用したポンプでは、約３８ｍｍ
（約１ ’／２ ！’）の内径を有するいわゆるフラッ
クス管すなわち注入管を通してガスを注入する。In the particular case of melting molten metal in a reverberatory furnace, gas injection is typically by submerging a molten metal pump into the molten metal and injecting the gas through a conduit into the outlet passage of the pump. This is achieved by A suitable gas injection pump of the type described has the model designation M3 0-
Metallics Systems (under CSD-CL, etc.)
Metaullies Systems) 31935
Commercially available from Aurora Road, Solon, Ohio 44139. In the pump quoted, it is about 38mm
The gas is injected through a so-called flux tube or injection tube having an internal diameter of (approximately 1'/2!').
フラックス管は、ポンプの吐出通路の上側に沿って通路
に連結される。A flux tube is connected to the passageway along the upper side of the discharge passageway of the pump.
［発明が解決しようとする課題］
引用したポンプは、精製ガスを溶融金属の中へ注入する
のに良く働くが、ある問題は処理されない。この問題の
１つは、液送される溶融金属と精製ガスをできるだけ均
一に混合することに関する。Although the pumps cited work well for injecting purified gas into molten metal, certain problems are not addressed. One of the problems relates to mixing the molten metal being pumped and the purified gas as uniformly as possible.
ガスは単一の注入箇所で比較的大きい管を通して注入さ
れるから、比較的大きいガス泡（初期泡）が溶融金属の
中へ放出される。溶融金属の高速流れだけでこの初期泡
を剪断して極めて多数の微細に分散した、より小さい泡
にする。かくして、ポンプのインペラの回転速度に依存
する溶融金属の速度が、小さい泡で、ガスと金属との反
応速度を制御する。Because the gas is injected through a relatively large tube at a single injection point, relatively large gas bubbles (initial bubbles) are released into the molten metal. The high velocity flow of molten metal alone shears this initial bubble into a large number of finely dispersed smaller bubbles. Thus, the velocity of the molten metal, which depends on the rotational speed of the pump impeller, controls the rate of reaction between the gas and the metal with small bubbles.
ガスと溶融金属とのよく混じった混合ができるだけ早く
起こるように非常に小さい初期泡の形態でガスを溶融金
属の中へ均一に注入するのが好ましい。又、非常に遅い
速度を含むあらゆるポンプ速度で、小さい泡を注入しそ
の泡をできるだけ早く分散させることができることが望
ましい。It is preferred to uniformly inject the gas into the molten metal in the form of very small initial bubbles so that intimate mixing of the gas and molten metal occurs as quickly as possible. It is also desirable to be able to inject small bubbles and disperse the bubbles as quickly as possible at all pump speeds, including very slow speeds.
［課題を解決するための手段］
本発明は、前述の問題を処理する、ガスを溶融金属の中
へ注入するための新規かつ改良された技術を提供する。SUMMARY OF THE INVENTION The present invention provides a new and improved technique for injecting gas into molten metal that addresses the aforementioned problems.
本発明による装置は、溶融金属を通過させる通路を含む
。複数の開口部が、通路の周囲に配置され、開口部を通
してガスを注入するための手段が設けられる。The device according to the invention includes a passage through which molten metal passes. A plurality of openings are arranged around the passageway and means are provided for injecting gas through the openings.
本発明の好ましい実施例では、通路は溶融金属ポンプの
出口を構成し、開口部は、通路の内壁の一部を形成する
ように通路内に配置された多孔質媒体分散器によって構
成される。この媒体分散器は、結合したセラミック粒子
の多孔質媒体から作られるのが好ましいが、この媒体分
散器をグラファイトを含む他の材料で作っても良い。ガ
スを注入するための手段は、媒体分散器のまわりに形成
された周囲溝を含み、この溝は、圧縮ガスの供給源と流
体連通状態にある。In a preferred embodiment of the invention, the passage constitutes the outlet of the molten metal pump, and the opening is constituted by a porous media distributor disposed within the passage so as to form part of the inner wall of the passage. Although the media distributor is preferably made from a porous media of bonded ceramic particles, the media distributor may be made from other materials including graphite. The means for injecting gas includes a circumferential groove formed around the media distributor, the groove being in fluid communication with a source of compressed gas.
本発明は又、溶融金属を所定の断面を有する通路に通し
、複数の開口部を通路の周囲に設け、ガスを通路内の開
口部を通して溶融金属の中へ注入する、ことからなるガ
スを溶融金属の中へ注入する方法を含む。好ましい実施
例では、断面は円形であり、開口部は、多孔質セラミッ
ク媒体分散器によって構成される。The present invention also provides a method for melting gas by passing molten metal through a passageway having a predetermined cross-section, providing a plurality of openings around the passageway, and injecting gas into the molten metal through the openings in the passageway. Including methods of injection into metals. In a preferred embodiment, the cross section is circular and the opening is defined by a porous ceramic media distributor.
本発明の使用によって、ガスは通路の周囲で溶融金属の
中へ均一に注入される。その上、ガスは多孔質媒体分散
器を通過するため、非常に小さいガス泡が溶融金属の中
へ放出される。非常に小さい泡を注入することにより、
及びその泡を通路の周囲に均一に注入することにより、
ガスは非常に短時間に溶融金属とよく混合される。優れ
た結果があらゆるポンプ速度で得られる。By use of the present invention, gas is uniformly injected into the molten metal around the passageway. Moreover, as the gas passes through the porous media distributor, very small gas bubbles are released into the molten metal. By injecting very small bubbles,
and by injecting the foam uniformly around the passage,
The gas mixes well with the molten metal in a very short time. Excellent results are obtained at all pump speeds.
本発明の前述及び他の特徴と利点を、添付図面に示し、
かつ明細書及び特許請求の範囲により詳細に説明する。The foregoing and other features and advantages of the invention are illustrated in the accompanying drawings,
It will be explained in more detail in the specification and claims.
［実施例］
第１図から第３図を参照すると、本発明によるガス注入
装置が、全体的に参照番号１０で指示されている。装置
ＩＯは、容器１４内に入れられた溶融金属１２の中に沈
められるようになっているポンプの形態のものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1-3, a gas injection device according to the present invention is generally designated by the reference numeral 10. The device IO is in the form of a pump intended to be submerged into molten metal 12 contained within a container 14.
容器ｌ４は、反射炉の外部溜めであることが予想される
けれども、容器ｌ４は精製されるように望む溶融金属を
入れるどんな容器であっても良い。Although vessel l4 is expected to be an external sump of the reverberatory furnace, vessel l4 may be any vessel containing the molten metal desired to be purified.
ポンプは、溶融金属を液送するのに適したどんな形式の
ポンプであっても良いことが理解されるべきである。し
かし、一般的には、第２図及び第３図に詳しく示すよう
に、ポンプはベース部材ｌ６を有し、この中にインペラ
ｌ８が配置される。It should be understood that the pump may be any type of pump suitable for pumping molten metal. Generally, however, as shown in more detail in FIGS. 2 and 3, the pump has a base member l6 in which an impeller l8 is disposed.
ベース部材ｌ６は、出口通路２０を含む。継手２２がベ
ース部材１６に固着され、この継手２２は出口通路２０
と整合した通路２４を含む。スリーブ２６が、２８で示
すねじ連結で継手２２に固着される。流体密シールが、
参照番号２９で示す耐火接着剤で達成される。スリーブ
２６は、長さ方向に延びたボア３０を構成するように中
空である。ボア３０は、通路２４と軸方向に整合する。Base member l6 includes an outlet passageway 20. A fitting 22 is secured to the base member 16, and the fitting 22 is connected to the outlet passageway 20.
including a passageway 24 aligned with the . A sleeve 26 is secured to the fitting 22 with a threaded connection indicated at 28. A fluid-tight seal
This is accomplished with a fire-resistant adhesive designated by reference number 29. Sleeve 26 is hollow so as to define a longitudinally extending bore 30 . Bore 30 is axially aligned with passageway 24 .
第３図を詳しく参照すると、リングの形態の多孔質セラ
ミック媒体分散器３２が継手２２内に配置され、この媒
体分散器３２はスリーブ２６でそこに正しく保持される
。この媒体分散器３２は、継手２２内に形成された肩３
４に対して圧縮され、この圧縮は、スリーブ２６の端部
で行われる。環状溝３６が媒体分散器３２の外周のまわ
りで継手２２内に形成される。継手２２は、溝３６と流
体連通状態にある通路３８を含む。同様に、ベース部材
ｌ６は、通路３８と流体連通状態にある通路４０を含む
。ガス注入導管４２がベース部材１６に連結される。導
管４２は、通路４０及び圧縮ガスの供給源（示さず）と
流体連通状態にある内部通路４４を含む。導管４２は又
、ベース部材１６用の支持体として働く。With particular reference to FIG. 3, a porous ceramic media distributor 32 in the form of a ring is disposed within the fitting 22 and is held securely therein by the sleeve 26. This media distributor 32 has a shoulder 3 formed in the fitting 22.
4, and this compression takes place at the end of the sleeve 26. An annular groove 36 is formed in the fitting 22 around the outer periphery of the media distributor 32. Fitting 22 includes a passageway 38 in fluid communication with groove 36 . Similarly, base member l6 includes a passageway 40 in fluid communication with passageway 38. A gas injection conduit 42 is connected to base member 16 . Conduit 42 includes an internal passageway 44 in fluid communication with passageway 40 and a source of compressed gas (not shown). Conduit 42 also serves as a support for base member 16.
媒体分散器３２は、オハイオ州サロンのメタリックスシ
ステムズから商業的に入手できる結合したセラミック粒
子の多孔質媒体で作られるのが好ましい。種々の材料を
用いて媒体分散器３２を作ることができる。ガラスフリ
ット結合酸化アルミニウム又はガラスフリット結合炭化
珪素が窒素、アルゴン、或いは六フッ化硫黄のような不
活性ガスを溶融アルミニウム、マグネシウム、銅、或い
はこれらの合金の中へ注入させるときに特に良く働くこ
とがわかった。変形例として、注入されるガスが塩素で
あるときに、多孔質グラファイト媒体分散器又は焼結酸
化物セラミック媒体分散器を用いても良い。媒体分散器
３２の開口の寸法と数は、これらがポンプ１０によって
放出される溶融金属の中へ注入される泡の寸法を大いに
決定するから、重要である。許容できるガス流量と小さ
い泡寸法をもつ商業的に入手できる多孔質媒体分散器は
、１０−１００ミクロンの範囲に空孔径を有する。ガス
流量とガス体積は、媒体分散器の寸法と適用する圧力に
依存する。当業者は、当業者の特定の必要性に合う適当
な媒体分散器を選択することができるだろう。The media distributor 32 is preferably made of a porous media of bonded ceramic particles, commercially available from Metallics Systems, Salon, Ohio. A variety of materials can be used to make the media distributor 32. Glass-fritted aluminum oxide or glass-fritted silicon carbide work particularly well when inert gases such as nitrogen, argon, or sulfur hexafluoride are injected into molten aluminum, magnesium, copper, or alloys thereof. I understand. Alternatively, a porous graphite media distributor or a sintered oxide ceramic media distributor may be used when the gas injected is chlorine. The size and number of openings in the media distributor 32 are important because they largely determine the size of the bubbles that are injected into the molten metal discharged by the pump 10. Commercially available porous media dispersers with acceptable gas flow rates and small bubble sizes have pore sizes in the range of 10-100 microns. The gas flow rate and gas volume depend on the dimensions of the media distributor and the applied pressure. A person skilled in the art will be able to select an appropriate media distributor to suit his or her particular needs.
本発明の別の実施例を第４図に示す。本発明のこの実施
例では、継手２２の代りに、継手５０が用いられる。継
手５０は、継手２２とほぼ同様であり、同じエレメント
を、第２図及び第３図におけるのと同じ参照番号で示す
。しかし、第４図で示す実施例では、通路３８を用いる
代わりに、端ぐり部分５４に通じる通路５２が用いられ
る。内通路５８を有するガス注入導管５６が、端ぐり部
分５４内に固着され、従って通路５２、５８は互いに流
体連通状態にある。かくして、第４図に示す本発明の実
施例は、もし継手５０をポンプの出口に固着できるなら
ば、実質的にあらゆる形式の溶融金属ポンプに用いるこ
とができる。Another embodiment of the invention is shown in FIG. In this embodiment of the invention, joint 22 is replaced by joint 50. Fitting 50 is generally similar to fitting 22, and like elements are designated by the same reference numerals as in FIGS. 2 and 3. However, in the embodiment shown in FIG. 4, instead of using passageway 38, passageway 52 leading to counterbore portion 54 is used. A gas injection conduit 56 having an internal passageway 58 is secured within counterbore portion 54 such that passageways 52, 58 are in fluid communication with each other. Thus, the embodiment of the invention shown in FIG. 4 can be used with virtually any type of molten metal pump if the fitting 50 can be secured to the outlet of the pump.
本発明の使用によって、ガスは通路２４の周囲で溶融金
属の中へ均一に注入される。注入される泡は、非常に小
さく、この泡は、通路２４とボア３０を通して流れる溶
融金属とよ《混合される。Through use of the present invention, gas is uniformly injected into the molten metal around the passageway 24. The injected bubbles are very small and are well mixed with the molten metal flowing through passageway 24 and bore 30.
スリーブ２６の唯一重要な制限は、ガスと溶融金属との
完全な混合を確保するためにスリーブ２６を十分長くす
べき″ことである。その上、媒体分散器３２は、セラミ
ック材料で作られるので、媒体分散器３２は溶融金属の
腐食作用に大変良く耐える。その上、スリーブ２６は継
手２２の中へねじ込まれるので、媒体分散器３２は必要
なときに都合良く交換することができる。The only important limitation of the sleeve 26 is that it should be long enough to ensure complete mixing of the gas and molten metal.Moreover, the media distributor 32 is made of ceramic material. , the media distributor 32 resists the corrosive effects of molten metal very well.Moreover, since the sleeve 26 is screwed into the fitting 22, the media distributor 32 can be conveniently replaced when necessary.
本発明を好ましい形態で詳しく説明したが、好ましい実
施例のこの開示は、単なる例示としてなされたものであ
り、種々の変更を本発明の精神と範囲から逸脱すること
なく行うことができることが、理解されよう。本発明は
、特許請求の範囲の適切な表現によって、開示された本
発明に存在する特許性のある新規な特徴を包含するもの
である。Although the invention has been described in detail in a preferred form, it is understood that this disclosure of preferred embodiments is made by way of example only and that various changes can be made without departing from the spirit and scope of the invention. It will be. The invention is intended to encompass the patentable novel features residing in the invention as disclosed by the proper phrasing of the claims.
第１図は、溶融金属を入れ、その中にガス注入装置を沈
めた容器の斜視図であり、
第２図は、説明をわかりやすくするためにガス注入導管
を正しい位置からずらして示した、第１図のガス注入装
置の断面図であり、
第３図は、第２図の３−３線で示す平面における第１図
の装置の断面図であり、
第４図は、本発明の別の実施例を示す、第３図と同様の
図である。
１０・・・ガス注入装置、ｌ２・・・溶融金属、ｌ４Φ
・●容器、 １６・・・ベース部材、１８・・・
インペラ、 ２０・・・出口通路、２２・・・継手、
２４・・・通路、２６・・・スリーブ、
３２・・・媒体分散器、
４２・・・ガス注入導管。
３０・・・ボア、
３６・・・環状溝、1 is a perspective view of a vessel containing molten metal and a gas injection device submerged therein; FIG. 2 shows the gas injection conduit offset from its correct position for clarity; FIG. 3 is a cross-sectional view of the gas injection device of FIG. 1 taken along the plane indicated by line 3--3 in FIG. 2; and FIG. 4 is a cross-sectional view of the gas injection device of FIG. FIG. 4 is a diagram similar to FIG. 3, showing an embodiment of the present invention. 10... Gas injection device, l2... Molten metal, l4Φ
・●Container, 16...Base member, 18...
impeller, 20... outlet passage, 22... joint,
24... Passage, 26... Sleeve, 32... Media distributor, 42... Gas injection conduit. 30...Bore, 36...Annular groove,
Claims (1)
、 複数の開口部を通路（２４）の周囲に設け、ガスを開口
部を通して通路（２４）内の金属の中へ注入する、 ことからなるガスを溶融金属の中へ注入する方法。 ２、開口部は、多孔質媒体分散器によって構成される、
請求項第１項の方法。 ３、媒体分散器（３２）は、セラミック又はグラファイ
トの多孔質体の形態である、請求項第２項の方法。 ４、所定断面の出口通路（２４）を有する溶融金属ポン
プ（１０）を設け、 溶融金属を圧力下で出口通路（２４）に通し、複数の開
口部を通路（２４）の周囲に設け、ガスを開口部を通し
て通路（２４）を通過する溶融金属の中へ注入する、 ことからなる、ガスを溶融金属の中へ注入する方法。 ５、開口部は、多孔質媒体分散器（３２）によって構成
される、請求項第４項の方法。 ６、媒体分散器（３２）は、セラミック又はグラファイ
トの多孔質体の形態である、請求項第５項の方法。 ７、開口部は、多孔質媒体分散器（３２）によって構成
され、媒体分散器（３２）の内径部は、通路（２４）の
一部の内径部を構成する、請求項第４項の方法。 ８、溶融金属の流れる通路（２４）と、 通路（２４）の周囲で通路（２４）内に配置された多孔
質媒体分散器（３２）と、 多孔質媒体分散器（３２）を通して通路 （２４）を通れる溶融金属の中へガスを注入する手段と
、 からなる溶融金属の中へガスを注入する装置。 ９、通路（２４）は継手（２２）によって構成され、そ
の継手（２２）にスリーブ（２６）が固着され、スリー
ブ（２６）は、媒体分散器 （３２）に係合し、媒体分散器（３２）を継手（２２）
内に正しく保持する、請求項第８項の装置。 １０、媒体分散器（３２）の内径部は、通路（２４）の
一部の内径部を構成する、請求項第８項の装置。[Claims] 1. Pass molten metal through a passage (24) having a predetermined cross section, provide a plurality of openings around the passage (24), and direct gas through the openings to the metal in the passage (24). A method of injecting a gas into molten metal. 2. The opening is constituted by a porous media distributor;
The method of claim 1. 3. The method of claim 2, wherein the media distributor (32) is in the form of a ceramic or graphite porous body. 4. A molten metal pump (10) having an outlet passage (24) of a predetermined cross section is provided, the molten metal is passed through the outlet passage (24) under pressure, a plurality of openings are provided around the passage (24), and the gas A method for injecting a gas into molten metal, comprising: injecting gas through an opening into the molten metal passing through the passageway (24). 5. The method of claim 4, wherein the opening is constituted by a porous media distributor (32). 6. The method of claim 5, wherein the media distributor (32) is in the form of a ceramic or graphite porous body. 7. The method of claim 4, wherein the opening is constituted by a porous media distributor (32), the inner diameter of the media distributor (32) constituting the inner diameter of a portion of the passageway (24). . 8. a passageway (24) for the flow of molten metal; a porous media distributor (32) disposed within the passageway (24) around the passageway (24); and a porous media distributor (32) through the porous media distributor (32). ); and a device for injecting gas into the molten metal. 9. The passageway (24) is constituted by a coupling (22) to which a sleeve (26) is secured, the sleeve (26) engages a media distributor (32) and the media distributor ( 32) Fitting (22)
9. The device of claim 8, wherein the device is properly held within the device. 10. The apparatus of claim 8, wherein the inner diameter of the media distributor (32) constitutes the inner diameter of a portion of the passageway (24).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US31289389A | 1989-02-17 | 1989-02-17 | |
| US312893 | 1989-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02290930A true JPH02290930A (en) | 1990-11-30 |
Family
ID=23213482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2035986A Pending JPH02290930A (en) | 1989-02-17 | 1990-02-16 | Method and apparatus for feeding gas into molten metal |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0385617A1 (en) |
| JP (1) | JPH02290930A (en) |
| KR (1) | KR900013092A (en) |
| AU (1) | AU4988890A (en) |
| BR (1) | BR9000732A (en) |
| CA (1) | CA2010235A1 (en) |
| HU (1) | HUT57277A (en) |
| IL (1) | IL93349A0 (en) |
| NO (1) | NO900760L (en) |
| PT (1) | PT93185A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2652018B1 (en) * | 1989-09-20 | 1994-03-25 | Pechiney Rhenalu | DEVICE FOR TREATING WITH GAS FROM A LARGE SURFACE ALUMINUM LIQUID BATH MAINTAINED IN A STATIONARY STATE IN AN OVEN. |
| FR2670839A1 (en) * | 1990-12-21 | 1992-06-26 | Cit Alcatel | MACHINE, SUCH AS A VACUUM PUMP OR COMPRESSOR OF THE VOLUMETRIC OR DRIVE TYPE. |
| AUPN204895A0 (en) * | 1995-03-29 | 1995-04-27 | University Of Queensland, The | Method of generation and dispersion of fine bubbles and apparatus therefor |
| CN108396109B (en) * | 2017-02-05 | 2019-08-27 | 鞍钢股份有限公司 | A method of generating disperse bubble in ladle molten steel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2101000B1 (en) * | 1970-08-04 | 1977-01-14 | Activite Atom Avance | |
| US4052199A (en) * | 1975-07-21 | 1977-10-04 | The Carborundum Company | Gas injection method |
| CH641839A5 (en) * | 1979-07-10 | 1984-03-15 | Alusuisse | DEVICE FOR INITIATING GASES IN METAL MELT. |
| US4351514A (en) * | 1980-07-18 | 1982-09-28 | Koch Fenton C | Apparatus for purifying molten metal |
| IT1176428B (en) * | 1984-07-18 | 1987-08-18 | Radex Italiana Spa | OUTLET SLEEVE IN A DEVICE TO CONTROL THE STEEL FLOW MELTED FROM A LADLE OR A BASKET |
-
1990
- 1990-02-12 IL IL93349A patent/IL93349A0/en unknown
- 1990-02-15 EP EP90301657A patent/EP0385617A1/en not_active Withdrawn
- 1990-02-16 BR BR909000732A patent/BR9000732A/en unknown
- 1990-02-16 JP JP2035986A patent/JPH02290930A/en active Pending
- 1990-02-16 HU HU90835A patent/HUT57277A/en unknown
- 1990-02-16 AU AU49888/90A patent/AU4988890A/en not_active Abandoned
- 1990-02-16 PT PT93185A patent/PT93185A/en not_active Application Discontinuation
- 1990-02-16 NO NO90900760A patent/NO900760L/en unknown
- 1990-02-16 CA CA002010235A patent/CA2010235A1/en not_active Abandoned
- 1990-02-17 KR KR1019900002002A patent/KR900013092A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| IL93349A0 (en) | 1990-11-29 |
| EP0385617A1 (en) | 1990-09-05 |
| KR900013092A (en) | 1990-09-03 |
| HUT57277A (en) | 1991-11-28 |
| BR9000732A (en) | 1991-01-22 |
| CA2010235A1 (en) | 1990-08-17 |
| AU4988890A (en) | 1990-08-23 |
| PT93185A (en) | 1991-10-15 |
| NO900760L (en) | 1990-08-20 |
| HU900835D0 (en) | 1990-05-28 |
| NO900760D0 (en) | 1990-02-16 |
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