JP3616865B2 - Molten metal processing equipment - Google Patents
Molten metal processing equipment Download PDFInfo
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- JP3616865B2 JP3616865B2 JP12209897A JP12209897A JP3616865B2 JP 3616865 B2 JP3616865 B2 JP 3616865B2 JP 12209897 A JP12209897 A JP 12209897A JP 12209897 A JP12209897 A JP 12209897A JP 3616865 B2 JP3616865 B2 JP 3616865B2
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- Prior art keywords
- molten metal
- lid
- processing gas
- holding tank
- rotation shaft
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- 229910052751 metal Inorganic materials 0.000 title claims description 102
- 239000002184 metal Substances 0.000 title claims description 102
- 239000007788 liquid Substances 0.000 claims description 26
- 230000002265 prevention Effects 0.000 claims description 20
- 239000006185 dispersion Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 29
- 230000002093 peripheral effect Effects 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000003756 stirring Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Description
【０００１】
【発明の属する技術分野】
この発明は、アルミニウムおよびその合金やマグネシウムおよびその合金等の溶融金属の処理装置に関し、さらに詳しくは、溶融金属中に処理ガスを気泡状態で吹出すことにより、溶融金属中から水素ガス等の溶存有害ガスや非金属介在物を除去する処理に用いられる装置に関する。
【０００２】
【従来の技術】
従来、このような溶融金属の処理装置としては、溶融金属保持槽と、その上端開口を塞ぐ蓋と、蓋に形成された貫通孔に通され、かつ内部に処理ガス通路を有する垂直回転軸と、垂直回転軸の下端に設けられ、かつ処理ガス通路に連なった処理ガス吹出口を有する気泡放出分散用回転体を備えたものが知られている（特公平８−１７８号公報参照）。上記公報には記載されていないが、通常、上記装置の蓋としては、断熱性を考慮して、断熱材の両面が鉄板で覆われたものが用いられている。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来の装置では、垂直回転軸の回転や処理ガス気泡の液面までの上昇により溶融金属が飛散して、蓋内面の周縁部と溶融金属保持槽の内周面の上端部との境目部分に付着し、ここで凝固することがあるため、蓋を開くことができなくなるおそれがある。また、飛散した溶融金属は溶融金属保持槽の内周面における他の部分にも付着し、凝固する。そして、その量が多くなると歩留まりが低下したり、溶融金属保持槽にトラブルが発生するおそれがあるので、操業を停止して付着凝固物を除去しなければならず、その作業が面倒であるという問題がある。また、溶融金属の液面からの熱放射により、液面近傍の溶融金属の温度は他の部分よりも低くなっているので、溶融金属保持槽の内周面における液面近傍部分において金属が凝固することがある。そして、この場合も、その量が多くなると歩留まりが低下したり、溶融金属保持槽にトラブルが発生するおそれがあるので、操業を停止して付着凝固物を除去しなければならず、その作業が面倒であるという問題がある。さらに、長時間連続して処理を行った場合に、溶融金属の液面からの放射熱により、蓋下面の鉄板が変形し、その結果溶融金属保持槽内の気密性や温度保持性能が低下するという問題がある。
【０００４】
この発明の目的は、上記問題を解決し、処理作業時の溶融金属の飛散を防止しるとともに、液面近傍の溶融金属の温度低下を防止し、しかも蓋が溶融金属液面からの放射熱の影響を受けることのない溶融金属の処理装置を提供することにある。
【０００５】
【課題を解決するための手段と発明の効果】
この発明による溶融金属の処理装置は、溶融金属保持槽と、その上端開口を塞ぐ蓋と、蓋に形成された貫通孔に通され、かつ内部に処理ガス通路を有する垂直回転軸と、垂直回転軸の下端に設けられ、かつ処理ガス通路に連なった処理ガス吹出口を有する気泡放出分散用回転体とを備えており、気泡放出分散用回転体を溶融金属中に浸漬し、垂直回転軸を回転させることにより気泡放出分散用回転体を回転させるとともに、気泡放出分散用回転体から処理ガスを気泡状態で吹出すことによって、溶融金属中の溶存有害ガスおよび非金属介在物を除去する溶融金属の処理装置であって、垂直回転軸における蓋よりも下方でかつ溶融金属の液面よりも上方に位置する部分に、溶融金属飛散防止兼熱反射板が設けられているものである。
【０００６】
この発明の溶融金属の処理装置によれば、垂直回転軸における蓋よりも下方でかつ溶融金属の液面よりも上方に位置する部分に、溶融金属飛散防止兼熱反射板が設けられているので、この溶融金属飛散防止兼熱反射板の働きにより、飛散した溶融金属が蓋内面の周縁部と溶融金属保持槽の内周面の上端部との境目部分に付着凝固することを防止することができる。したがって、随時に蓋を開くことができる。また、溶融金属飛散防止兼熱反射板の働きにより、飛散した溶融金属が溶融金属保持槽の内周面における他の部分に付着凝固することも防止できる。したがって、歩留まりの低下や、溶融金属保持槽のトラブルの発生が防止され、その結果操業を停止して付着凝固物を除去する作業が不要になるとともに、連続操業が可能になる。また、溶融金属の液面からの放射熱は、溶融金属飛散防止兼熱反射板により反射させられるので、溶融金属の液面近傍の温度低下を防止することができる。したがって、歩留まりの低下や、溶融金属保持槽のトラブルの発生が防止され、その結果操業を停止して付着凝固物を除去する作業が不要になるとともに、連続操業が可能になる。さらに、溶融金属飛散防止兼熱反射板の働きにより、溶融金属の液面からの放射熱が蓋まで届くことはなくなり、蓋下面の鉄板の変形が防止される。したがって、溶融金属保持槽内の気密性が向上するとともに、温度保持性能が向上する。
【０００７】
上記溶融金属の処理装置において、溶融金属飛散防止兼熱反射板と溶融金属保持槽内に入れられる溶融金属の液面との距離が、２０〜４０ｍｍの範囲内にあることが好ましく、３０ｍｍ程度であることが望ましい。上記距離が２０ｍｍ未満であれば、溶融金属飛散防止兼熱反射板が黒鉛で形成されている場合、酸化され易くなり、４０ｍｍを越えると溶融金属の液面からの放射熱を十分反射することができず、溶融金属の液面近傍の温度低下を防止し得ないおそれがある。
【０００８】
【発明の実施の形態】
以下、この発明の実施の形態を、図面を参照して説明する。
【０００９】
溶融金属の処理装置は、溶融金属保持槽（１） と、その上端開口を塞ぐ蓋（２） と、蓋（２） に形成された貫通孔（３） に回転自在に通され、かつ内部に処理ガス通路（４） を有する垂直回転軸（５） と、垂直回転軸（５） の下端に固定状に設けられ、かつ底面の中央部に処理ガス通路（４） に連なった処理ガス吹出口（６） を有する気泡放出分散用回転体（７） とを備えている。蓋（２） は、断熱材（２ａ）の両面が鉄板（２ｂ）で覆われたものである。
【００１０】
垂直回転軸（５）における溶融金属保持槽（１）内に存在しかつ溶融金属（Ｍ）の液面よりも上方に位置する部分、すなわち蓋 （２） よりも下方でかつ溶融金属 （Ｍ） の液面よりも上方に位置する部分に、黒鉛やステンレス鋼等により形成された溶融金属飛散防止兼熱反射板（８）が設けられている。垂直回転軸（５）における溶融金属保持槽（１）内に存在しかつ溶融金属（Ｍ）の液面よりも上方に位置する部分に外向きフランジ（９）が一体に形成され、垂直回転軸（５）の外周面の外向きフランジ（９）よりも下方の部分に雄ねじ部（１０）が形成され、溶融金属飛散防止兼熱反射板（８）を下方から垂直回転軸（５）に嵌め被せた後雄ねじ部（１０）にナット（１１）がねじ嵌められ、外向きフランジ（９）とナット（１１）により溶融金属飛散防止兼熱反射板（８）が挟着固定されている。溶融金属飛散防止兼熱反射板（８）と溶融金属保持槽（１）内に入れられている溶融金属（Ｍ）の液面との距離は、２０〜４０ｍｍの範囲内にあることが好ましく、３０ｍｍ程度であることが望ましい。
【００１１】
垂直回転軸（５） の下端部外周面には雄ねじ部（１２）が形成されている。また、垂直回転軸（５） は、溶融金属保持槽（１） の外部に設置されている図示しない適当な回転駆動装置によって回転させられるようになっている。また、垂直回転軸（５） の処理ガス通路（４） は、図示しない適当な処理ガス供給装置に接続されている。
【００１２】
回転体（７） の中央には、これを上下に貫通した貫通孔（１３）が形成されており、その下端開口が処理ガス吹出口（６） となされている。貫通孔（１３）の上端部には雌ねじ部（１４）が形成されており、この雌ねじ部（１４）に雄ねじ部（１２）をねじ嵌めることによって、回転体（７） が垂直回転軸（５） に固定されている。また、回転体（７） の周面には、周方向に所定間隔をおいて複数の攪拌羽根（１５）が一体に形成されている。回転体（７） の底面に処理ガス吹出口（６） から周縁部に至る複数の溝（１６）が放射状に形成されており、各溝（１６）は攪拌羽根（１５）の先端面に開口している。
【００１３】
上記構成の溶融金属の処理装置を用いての溶融金属（Ｍ） の処理は、次のようにして行われる。
【００１４】
すなわち、処理ガス供給装置により垂直回転軸（５） の処理ガス通路（４） に、不活性ガス、塩素ガス等の処理ガスを供給しながら駆動装置により垂直回転軸（５） を介して回転体（７） を回転させる。処理ガスは、処理ガス通路（４） の下端から貫通孔（１３）を経て処理ガス吹出口（６） から回転体（７） の底面に吹出される。この処理ガスは溝（１６）に入り、その中を通って攪拌羽根（１５）の先端の方に向かって流れ、その開口端から開口縁に当たって微細な気泡状とされて放出されるとともに、回転する回転体（７） により溶融金属保持槽（１） 内の溶融金属（Ｍ） の全体に分散させられる。そして、処理ガスによって、溶融金属（Ｍ） 中の水素ガス等の溶存有害ガスや非金属介在物が除去される。
【００１５】
このとき、溶融金属飛散防止兼熱反射板（８） の働きにより、蓋（２） 内面の周縁部と溶融金属保持槽（１） の内周面の上端部との境目部分までの溶融金属（Ｍ） の飛散が防止される。また、溶融金属飛散防止兼熱反射板（８） の働きにより、飛散した溶融金属（Ｍ） が溶融金属保持槽（１） の内周面における他の部分に飛散し、ここに付着凝固することも防止される。飛散して溶融金属飛散防止兼熱反射板（８） に付着した溶融金属は、溶融金属（Ｍ） の液面からの放射熱の影響によって凝固することが防止され、下方に滴下する。
【００１６】
また、溶融金属（Ｍ） の液面からの放射熱は溶融金属飛散防止兼熱反射板（８） により反射されるので（図１矢印参照）、溶融金属（Ｍ） の液面近傍の温度低下が防止され、溶融金属保持槽（１） の内周面における液面近傍への金属の凝固が防止される。さらに、溶融金属（Ｍ） の液面からの放射熱は溶融金属飛散防止兼熱反射板（８） により反射されるので、上記放射熱が蓋（２） まで届くことが防止され、蓋（２） 下面の鉄板（２ｂ）の変形が防止される。
【図面の簡単な説明】
【図１】この発明の実施形態を示す垂直断面図である。
【符号の説明】
（１）：溶融金属保持槽
（２）：蓋
（３）：貫通孔
（４）：処理ガス通路
（５）：垂直回転軸
（６）：処理ガス吹出口
（７）：気泡放出分散用回転体
（８）：溶融金属飛散防止兼熱反射板
（Ｍ）：溶融金属[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for treating molten metal such as aluminum and its alloys, magnesium and its alloys, and more particularly, by dissolving a treatment gas in the form of bubbles in the molten metal to dissolve hydrogen gas or the like from the molten metal. The present invention relates to an apparatus used for processing for removing harmful gases and non-metallic inclusions.
[0002]
[Prior art]
Conventionally, such a molten metal processing apparatus includes a molten metal holding tank, a lid that closes the upper end opening thereof, a vertical rotating shaft that is passed through a through-hole formed in the lid and has a processing gas passage inside. Also known is a device equipped with a rotating body for discharging and dispersing bubbles, which is provided at the lower end of a vertical rotating shaft and has a processing gas outlet connected to a processing gas passage (see Japanese Patent Publication No. 8-178). Although not described in the above publication, normally, as a lid of the above-mentioned device, a material in which both surfaces of a heat insulating material are covered with an iron plate is used in consideration of heat insulating properties.
[0003]
[Problems to be solved by the invention]
However, in the conventional apparatus, the molten metal is scattered by the rotation of the vertical rotation shaft or the rising of the processing gas bubbles to the liquid level, and the boundary between the peripheral edge of the inner surface of the lid and the upper end of the inner peripheral surface of the molten metal holding tank. Since it adheres to the part and solidifies there, there is a possibility that the lid cannot be opened. Moreover, the scattered molten metal adheres to other portions on the inner peripheral surface of the molten metal holding tank and solidifies. And if the amount increases, the yield may decrease or trouble may occur in the molten metal holding tank, so it is necessary to stop the operation and remove the adhering solidified material, which is troublesome. There's a problem. In addition, since the temperature of the molten metal near the liquid surface is lower than other parts due to the heat radiation from the liquid surface of the molten metal, the metal solidifies in the portion near the liquid surface on the inner peripheral surface of the molten metal holding tank. There are things to do. And also in this case, if the amount increases, the yield may decrease or trouble may occur in the molten metal holding tank. There is a problem that it is troublesome. Furthermore, when the treatment is performed continuously for a long time, the iron plate on the lower surface of the lid is deformed by the radiant heat from the liquid surface of the molten metal, and as a result, the airtightness and temperature holding performance in the molten metal holding tank are lowered. There is a problem.
[0004]
The object of the present invention is to solve the above-mentioned problems, prevent the molten metal from being scattered during processing operations, prevent the temperature of the molten metal near the liquid surface from decreasing, and the lid is radiant heat from the molten metal liquid surface. An object of the present invention is to provide an apparatus for treating molten metal that is not affected by the above.
[0005]
[Means for Solving the Problems and Effects of the Invention]
A molten metal processing apparatus according to the present invention includes a molten metal holding tank, a lid that closes an upper end opening thereof, a vertical rotation shaft that is passed through a through-hole formed in the lid and has a processing gas passage therein, and a vertical rotation A bubble discharge / dispersion rotating body provided at the lower end of the shaft and having a processing gas outlet connected to the processing gas passage. The bubble discharge / dispersion rotating body is immersed in molten metal, and the vertical rotation shaft is Molten metal that removes dissolved harmful gases and non-metallic inclusions in the molten metal by rotating the bubble emitting / dispersing rotator by rotating and blowing the processing gas in the form of bubbles from the bubble emitting / dispersing rotator In this processing apparatus, a molten metal scattering prevention and heat reflecting plate is provided in a portion of the vertical rotation shaft located below the lid and above the liquid level of the molten metal.
[0006]
According to the molten metal processing apparatus of the present invention, the molten metal scattering prevention and heat reflecting plate is provided in a portion located below the lid on the vertical rotation shaft and above the liquid level of the molten metal. By the action of the molten metal scattering prevention and heat reflecting plate, it is possible to prevent the scattered molten metal from adhering and solidifying to the boundary portion between the peripheral portion of the inner surface of the lid and the upper end portion of the inner peripheral surface of the molten metal holding tank. it can. Therefore, the lid can be opened at any time. Further, the molten metal scattering prevention and heat reflection plate can prevent the scattered molten metal from adhering and solidifying to other portions on the inner peripheral surface of the molten metal holding tank. Therefore, a decrease in yield and occurrence of troubles in the molten metal holding tank are prevented, and as a result, the operation of stopping the operation and removing the adhering solidified substance becomes unnecessary, and the continuous operation becomes possible. Further, since the radiant heat from the liquid surface of the molten metal is reflected by the molten metal scattering prevention and heat reflecting plate, it is possible to prevent a temperature drop in the vicinity of the liquid surface of the molten metal. Therefore, a decrease in yield and occurrence of troubles in the molten metal holding tank are prevented, and as a result, the operation of stopping the operation and removing the adhering solidified substance becomes unnecessary, and the continuous operation becomes possible. Furthermore, by the action of the molten metal scattering prevention and heat reflecting plate, the radiant heat from the liquid surface of the molten metal does not reach the lid, and the deformation of the iron plate on the lower surface of the lid is prevented. Therefore, the airtightness in the molten metal holding tank is improved and the temperature holding performance is improved.
[0007]
In the molten metal processing apparatus, the distance between the molten metal scattering prevention and heat reflector and the liquid level of the molten metal placed in the molten metal holding tank is preferably in the range of 20 to 40 mm, and is about 30 mm. It is desirable to be. If the distance is less than 20 mm, the molten metal scattering prevention and heat reflecting plate is easily oxidized when it is made of graphite, and if it exceeds 40 mm, the radiant heat from the liquid surface of the molten metal may be sufficiently reflected. This is not possible, and there is a risk that the temperature drop near the liquid surface of the molten metal cannot be prevented.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0009]
The molten metal processing apparatus is rotatably passed through a molten metal holding tank (1), a lid (2) that closes the upper end opening thereof, and a through hole (3) formed in the lid (2). A vertical rotating shaft (5) having a processing gas passage (4), and a processing gas outlet provided fixed to the lower end of the vertical rotating shaft (5) and connected to the processing gas passage (4) at the center of the bottom surface (6) A bubble emitting and dispersing rotator (7) having: The lid (2) is obtained by covering both surfaces of the heat insulating material (2a) with an iron plate (2b).
[0010]
A portion present in the molten metal holding tank (1) in the vertical rotating shaft (5) and located above the liquid level of the molten metal (M) , that is, below the lid (2) and molten metal (M) A molten metal scattering prevention and heat reflecting plate (8) formed of graphite, stainless steel or the like is provided in a portion located above the liquid level . An outward flange (9) is integrally formed at a portion of the vertical rotating shaft (5) in the molten metal holding tank (1) and positioned above the liquid level of the molten metal (M). A male screw portion (10) is formed in a portion below the outward flange (9) of the outer peripheral surface of (5), and the molten metal scattering prevention and heat reflecting plate (8) is fitted to the vertical rotating shaft (5) from below. After being covered, a nut (11) is screwed onto the male screw portion (10), and the molten metal scattering prevention and heat reflecting plate (8) is clamped and fixed by the outward flange (9) and the nut (11). The distance between the molten metal scattering prevention and heat reflector (8) and the liquid level of the molten metal (M) contained in the molten metal holding tank (1) is preferably in the range of 20 to 40 mm, It is desirable that it is about 30 mm.
[0011]
A male screw portion (12) is formed on the outer peripheral surface of the lower end portion of the vertical rotation shaft (5). Further, the vertical rotating shaft (5) is rotated by an appropriate rotation driving device (not shown) installed outside the molten metal holding tank (1). The processing gas passage (4) of the vertical rotating shaft (5) is connected to an appropriate processing gas supply device (not shown).
[0012]
A through hole (13) is formed in the center of the rotating body (7) so as to vertically penetrate the rotating body (7), and a lower end opening thereof serves as a processing gas outlet (6). A female threaded portion (14) is formed at the upper end of the through hole (13), and the male threaded portion (12) is screwed into the female threaded portion (14), so that the rotating body (7) is turned into a vertical rotating shaft (5). ) Is fixed. A plurality of stirring blades (15) are integrally formed on the circumferential surface of the rotating body (7) at a predetermined interval in the circumferential direction. A plurality of grooves (16) extending from the processing gas outlet (6) to the peripheral portion are formed radially on the bottom surface of the rotating body (7), and each groove (16) is opened at the front end surface of the stirring blade (15). doing.
[0013]
The molten metal (M) treatment using the molten metal processing apparatus having the above-described configuration is performed as follows.
[0014]
That is, a rotating body is supplied via a vertical rotation shaft (5) by a driving device while supplying a processing gas such as inert gas or chlorine gas to a processing gas passage (4) of the vertical rotation shaft (5) by a processing gas supply device. (7) Rotate. The processing gas is blown out from the lower end of the processing gas passage (4) through the through hole (13) to the bottom surface of the rotating body (7) from the processing gas outlet (6). This processing gas enters the groove (16), flows through it toward the tip of the stirring blade (15), hits the opening edge from the opening end, is discharged in the form of fine bubbles, and rotates. The molten metal (M) in the molten metal holding tank (1) is dispersed by the rotating body (7). The processing gas removes dissolved harmful gases such as hydrogen gas and non-metallic inclusions in the molten metal (M).
[0015]
At this time, by the action of the molten metal scattering prevention and heat reflecting plate (8), the molten metal (up to the boundary between the peripheral edge of the inner surface of the lid (2) and the upper end of the inner peripheral surface of the molten metal holding tank (1)) M) is prevented from scattering. Also, the molten metal scattering prevention and heat reflector (8) causes the scattered molten metal (M) to scatter to other parts of the inner peripheral surface of the molten metal holding tank (1) and adhere and solidify there. Is also prevented. The molten metal scattered and adhered to the molten metal scattering prevention and heat reflecting plate (8) is prevented from solidifying due to the influence of radiant heat from the liquid surface of the molten metal (M), and drops downward.
[0016]
Further, since the radiant heat from the liquid surface of the molten metal (M) is reflected by the molten metal scattering prevention and heat reflecting plate (8) (see the arrow in FIG. 1), the temperature drop in the vicinity of the liquid surface of the molten metal (M). And the solidification of the metal to the vicinity of the liquid surface on the inner peripheral surface of the molten metal holding tank (1) is prevented. Further, since the radiant heat from the liquid surface of the molten metal (M) is reflected by the molten metal scattering prevention and heat reflecting plate (8), the radiant heat is prevented from reaching the lid (2), and the lid (2 ) Deformation of the lower iron plate (2b) is prevented.
[Brief description of the drawings]
FIG. 1 is a vertical sectional view showing an embodiment of the present invention.
[Explanation of symbols]
(1): Molten metal holding tank (2): Lid (3): Through hole (4): Process gas passage (5): Vertical rotating shaft (6): Process gas outlet (7): Rotation for bubble discharge dispersion Body (8): Molten metal scattering prevention and heat reflector (M): Molten metal
Claims (2)
垂直回転軸における蓋よりも下方でかつ溶融金属の液面よりも上方に位置する部分に、溶融金属飛散防止兼熱反射板が設けられている溶融金属の処理装置。A molten metal holding tank, a lid that closes the upper end opening thereof, a vertical rotation shaft that is passed through a through-hole formed in the lid and has a processing gas passage therein, and a processing gas that is provided at the lower end of the vertical rotation shaft A bubble discharge / dispersion rotator having a processing gas outlet connected to the passage, and the bubble discharge / dispersion rotator is immersed in molten metal and the vertical rotation shaft is rotated to rotate the bubble discharge / dispersion rotator. A molten metal processing apparatus that removes dissolved harmful gas and non-metallic inclusions in the molten metal by blowing out the processing gas in a bubble state from the rotating body for discharging and dispersing bubbles,
A molten metal processing apparatus in which a molten metal scattering prevention and heat reflecting plate is provided in a portion located below a lid and above a liquid level of a molten metal on a vertical rotation shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12209897A JP3616865B2 (en) | 1997-05-13 | 1997-05-13 | Molten metal processing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12209897A JP3616865B2 (en) | 1997-05-13 | 1997-05-13 | Molten metal processing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10310829A JPH10310829A (en) | 1998-11-24 |
| JP3616865B2 true JP3616865B2 (en) | 2005-02-02 |
Family
ID=14827605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12209897A Expired - Lifetime JP3616865B2 (en) | 1997-05-13 | 1997-05-13 | Molten metal processing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3616865B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100478698B1 (en) * | 2002-09-07 | 2005-03-28 | 이유기 | Pressuring equipment for melting alumunium supply in the holding furnace of low pressure casting furnace and dosing furnace process |
-
1997
- 1997-05-13 JP JP12209897A patent/JP3616865B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10310829A (en) | 1998-11-24 |
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