JP6526769B1 - Apparatus for removing impurities from molten metal and method for removing impurities - Google Patents

Apparatus for removing impurities from molten metal and method for removing impurities Download PDF

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JP6526769B1
JP6526769B1 JP2017220376A JP2017220376A JP6526769B1 JP 6526769 B1 JP6526769 B1 JP 6526769B1 JP 2017220376 A JP2017220376 A JP 2017220376A JP 2017220376 A JP2017220376 A JP 2017220376A JP 6526769 B1 JP6526769 B1 JP 6526769B1
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molten metal
flow passage
gap
end plate
closed end
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JP2019089112A (en
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高　橋　謙　三
橋 謙 三 高
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TAKAHASHI KENZO
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Priority to AU2018368019A priority patent/AU2018368019A1/en
Priority to PCT/JP2018/031232 priority patent/WO2019097799A1/en
Priority to EP18878774.1A priority patent/EP3711878A4/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/116—Refining the metal
    • B22D11/118—Refining the metal by circulating the metal under, over or around weirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/116—Refining the metal
    • B22D11/119—Refining the metal by filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/02—Use of electric or magnetic effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/04—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like tiltable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/56—Means for supporting, manipulating or changing a pouring-nozzle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/12—Arrangement of elements for electric heating in or on furnaces with electromagnetic fields acting directly on the material being heated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1545—Equipment for removing or retaining slag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1545—Equipment for removing or retaining slag
    • F27D3/159—Equipment for removing or retaining slag for retaining slag during the pouring of the metal or retaining metal during the pouring of the slag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0039—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising magnetic means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)

Abstract

【課題】不純物を含む金属の溶湯から高精度に不純物を除去しつつ、連続して製品を製造可能とするための、連続式不純物除去装置及び方法の提供。【解決手段】外導電性金属の溶湯Ｍを金属製品製造装置へ向けて流動させる溶湯流動路を有する、溶湯流動路体に、不純物除去空間１４を形成し、不純物除去空間１４内に、溶湯と電気的に接触可能な電極装置１３ａ，ｂと溶湯Ｍ中に磁場を形成可能な一対の永久磁石による磁場装置を設け、電極と溶湯流動路形成体の底面９との間に上下に開口した第１の隙間及び長さ方向に開口した第２の隙間を形成するように、不純物除去空間１４に浮遊状態に設け、電極装置１３ａ，ｂと前記磁場装置とによる付力装置によって、不純物除去空間１４における溶湯Ｍに下向きにローレンツ力を印加して溶湯Ｍの密度を増大させて、溶湯Ｍ中の不純物を溶湯Ｍの表面に浮上させ、溶湯Ｍを前記第１の隙間を通って前記第２の隙間へ圧送する方法。【選択図】図２An object of the present invention is to provide a continuous impurity removal apparatus and method for continuously producing a product while removing impurities from a molten metal containing impurities with high accuracy. An impurity removing space (14) is formed in a molten metal flow path body having a molten metal flow path for causing a molten metal M of an outer conductive metal to flow toward a metal product manufacturing apparatus. A magnetic field device is provided by a pair of permanent magnets capable of forming a magnetic field in the molten metal M and the electrode devices 13a and 13b which can be in electrical contact, and is opened upward and downward between the electrode and the bottom surface 9 of the molten metal flow passage forming body The impurity removing space 14 is provided in a floating state in the impurity removing space 14 so as to form a second gap that is open in the gap direction and the length direction of the impurity removing space 14 by the biasing device by the electrode devices 13a and 13b and the magnetic field device. The Lorentz force is applied downward to the molten metal M to increase the density of the molten metal M, and the impurities in the molten metal M are floated on the surface of the molten metal M, and the molten metal M is passed through the first gap and the second How to pump to the gap. [Selected figure] Figure 2

Description

本発明は金属の溶湯からの連続式不純物除去装置及び連続式不純物除去方法に関する。   The present invention relates to an apparatus for removing impurities from a molten metal and a method for removing impurities from a molten metal.

従来、導電性（伝導性）を有する金属の溶湯、即ち、非鉄金属（例えば、Ａｌ，Ｃｕ，Ｚｎ又はＳｉ、あるいはこれらのうちの少なくとも２つの合金、あるいはＭｇ合金等）の溶湯又は前記非鉄金属以外のその他の金属の溶湯からの製品化するには、例えば、原材料を溶解し、成分調整を行った後、溶湯中に混入している不純物を除去し、成形する、という工程が採られる。不純物除去は一般に溶湯の浄化と言われ、例えばセラミックフィルターが用いられる。   Conventionally, a molten metal having conductivity (conductivity), that is, a molten metal of non-ferrous metal (for example, Al, Cu, Zn or Si, or at least two alloys of them, Mg alloy, etc.) or non-ferrous metal In order to produce a product from a molten metal of other metals, for example, a step of melting the raw material, adjusting the components, removing the impurities mixed in the molten metal and forming it is adopted. Impurity removal is generally referred to as purification of molten metal, and for example, a ceramic filter is used.

しかしながら、フィルターを用いた不純物除去方法は、当然ながら濾過法であるため、目詰まりが起こりやすい。このため、作業性が悪化し、ランニングコストが増大する等の難点がある。   However, since the method of removing impurities using a filter is, of course, a filtration method, clogging easily occurs. For this reason, there is a disadvantage that the workability is deteriorated and the running cost is increased.

つまり、フィルター式の場合、網の目の大きさをどの程度に設定するかが実際上重要なポイントとなってくる。大きな不純物だけでなく、微細な不純物を除去しようとすると、目を細かくしなければならない。しかしながら、目を細かくすれば、目詰まりが発生しやす。例えば瞬時に目詰まりを起こしてしまい、生産がストップすることもある。   That is, in the case of the filter type, it becomes an important point in practice how much the mesh size is set. In order to remove not only large impurities but also fine impurities, it is necessary to make the eyes finer. However, if the eyes are made finer, clogging easily occurs. For example, clogging may occur instantly and production may stop.

そこで、従来、フィルターでの除去に先立ち、溶湯中に事前にフラックスを投入することも行われていた。この投入により、不純物は粒径の大きな物に変えられる。これにより、目をある程度大きく保ったままでも不純物を除去可能となり、フィルターでの除去効率（トラップ効率）を上げることができる。しかしながら、溶湯中にフラックスを投入すること自体が、製品の品質の観点から、好ましいと言えない場合も少なくない。   Therefore, in the prior art, it has been also practiced to introduce a flux into the molten metal in advance prior to the removal by the filter. By this addition, the impurities can be converted to large particles. As a result, the impurities can be removed while keeping the eye size large to some extent, and the removal efficiency (trap efficiency) of the filter can be increased. However, introducing the flux into the molten metal itself is often not preferable from the viewpoint of product quality.

上述のように、従来の手法では、金属の溶湯から不純物を、細かい不純物も含めて、除去しつつ、製品の生産を停止させることなく連続して生産することは実際上できなかった。   As described above, in the conventional method, it is practically impossible to continuously produce without stopping the production of the product while removing the impurities from the molten metal including the fine impurities.

本発明は、上記に鑑みてなされたもので、その目的は、不純物を含む非鉄金属やその他の金属の溶湯から高精度に不純物を除去しつつ、連続して製品を製造可能とするための、連続式不純物除去装置及び方法を提供しようとするものである。   The present invention has been made in view of the above, and its object is to make it possible to continuously produce a product while removing impurities from molten metal of non-ferrous metals and other metals containing impurities with high accuracy. It is an object of the present invention to provide a continuous impurity removal apparatus and method.

本発明の実施形態は、
導電性金属の溶湯を次段の金属製品製造装置へ送出する、金属の溶湯からの連続式不純物除去装置であって、
外部から流入させられた導電性金属の溶湯を金属製品製造装置へ向けて流動させる溶湯流動路を有する、溶湯流動路体と、
前記溶湯流動路体に設けられた、前記溶湯流動路の前後を仕切って、不純物除去空間を形成する、入口側閉塞端板及び出口側閉塞端板と、
前記不純物除去空間内に設けられ、溶湯の流れる方向である長さ方向に対向する、前記不純物除去空間内の溶湯と電気的に接触可能な、入口側電極及び出口側電極による電極装置と、
前記溶湯流動路形成体外部に設けられ、前記長さ方向と交叉する幅方向に対向し、前記溶湯流動路形成体の前記不純物除去空間を前記幅方向に挟む、互いに異極を対向させ、前記不純物除去空間内の溶湯中に磁場を形成可能な、一対の永久磁石による磁場装置と、
を備え、
前記電極装置と前記磁場装置とが、前記不純物除去空間における溶湯に下向きにローレンツ力を印加して溶湯の密度を増大させて溶湯中の不純物を溶湯の表面に浮上させることが可能な、付力装置を構成している、
ものとして構成される。 The embodiment of the present invention is
A continuous impurity removing device from a molten metal for delivering a molten metal of a conductive metal to a metal product manufacturing apparatus of the next stage, comprising:
A molten metal flow passage body having a molten metal flow passage for causing the molten metal of the conductive metal introduced from the outside to flow toward the metal product manufacturing apparatus;
An inlet-side closed end plate and an outlet-side closed end plate provided in the molten metal flow passage body to partition the front and back of the molten metal flow passage to form an impurity removing space;
An electrode device comprising an inlet side electrode and an outlet side electrode which is provided in the impurity removing space and which is electrically opposed to the molten metal in the impurity removing space, facing in a length direction which is a flowing direction of the melt;
The molten metal flow passage forming body is provided outside, is opposed in the width direction intersecting with the length direction, and sandwiches the impurity removal space of the molten metal flow passage forming body in the width direction. A magnetic field device with a pair of permanent magnets capable of forming a magnetic field in the melt in the impurity removal space,
Equipped with
The electrode device and the magnetic field device apply a Lorentz force downward to the molten metal in the impurity removing space to increase the density of the molten metal, thereby causing the impurities in the molten metal to float on the surface of the molten metal Configuring the device,
It is configured as a thing.

さらに、本発明の実施形態は、
導電性金属の溶湯を次段の金属製品製造装置へ送出するに当たり、金属の溶湯から不純物を除去する連続式不純物除去方法であって、
外部から流入させられた導電性金属の溶湯を金属製品製造装置へ向けて流動させる溶湯流動路を有する、溶湯流動路体を準備し、
前記溶湯流動路体に、入口側閉塞端板及び出口側閉塞端板を設けて、前記溶湯流動路の前後を仕切って、不純物除去空間を形成し、
前記不純物除去空間内に、溶湯の流れる方向である長さ方向に対向する、前記不純物除去空間内の溶湯と電気的に接触可能な、入口側電極及び出口側電極による電極装置を設け、
前記溶湯流動路形成体外部に、前記長さ方向と交叉する幅方向に対向し、前記溶湯流動路形成体の前記不純物除去空間を前記幅方向に挟む、互いに異極を対向させ、前記不純物除去空間内の溶湯中に磁場を形成可能な、一対の永久磁石による磁場装置を設け、
前記電極装置と前記磁場装置とによる付力装置によって、前記不純物除去空間における溶湯に下向きにローレンツ力を印加して溶湯の密度を増大させて、溶湯中の不純物を溶湯の表面に浮上させる、
ものとして構成される。 Furthermore, embodiments of the present invention
A continuous impurity removing method for removing impurities from a molten metal in delivering a molten metal of a conductive metal to a metal product manufacturing apparatus of the next stage, the method comprising:
Preparing a molten metal flow passage body having a molten metal flow passage for causing the molten metal of the conductive metal introduced from the outside to flow toward the metal product manufacturing apparatus;
An inlet-side closed end plate and an outlet-side closed end plate are provided in the molten metal flow passage body to divide the front and back of the molten metal flow passage to form an impurity removing space,
The impurity removing space is provided with an electrode device having an inlet side electrode and an outlet side electrode, which can be in electrical contact with the molten metal in the impurity removing space, facing in the length direction which is the flowing direction of the molten metal.
The molten metal flow passage forming body is opposed to the outside in the width direction intersecting the length direction, and the impurity removal space of the molten metal flow passage forming body is sandwiched in the width direction. Providing a magnetic field device with a pair of permanent magnets capable of forming a magnetic field in the molten metal in the space;
A Lorentz force is applied downward to the molten metal in the impurity removing space by a biasing device by the electrode device and the magnetic field device to increase the density of the molten metal, thereby causing the impurities in the molten metal to float on the surface of the molten metal.
It is configured as a thing.

さらに、本発明の実施形態は、
導電性金属の溶湯を次段の金属製品製造装置へ送出する、金属の溶湯からの連続式不純物除去装置であって、
外部から流入させられた導電性金属の溶湯を金属製品製造装置へ向けて流動させる溶湯流動路を有する、溶湯流動路体と、
前記溶湯流動路体に設けられた、前記溶湯流動路の前後を仕切って、不純物除去空間を形成する、入口側閉塞端板及び出口側閉塞端板と、
前記不純物除去空間内に設けられ、溶湯の流れる方向である長さ方向に対向する、前記不純物除去空間内の溶湯と電気的に接触可能な、入口側電極及び出口側電極による電極装置と、
前記溶湯流動路形成体外部に設けられ、前記長さ方向と交叉する幅方向に対向し、前記溶湯流動路形成体の前記不純物除去空間を前記幅方向に挟む、互いに異極を対向させ、前記不純物除去空間内の溶湯中に磁場を形成可能な、一対の永久磁石による磁場装置と、
を備え、
前記出口側電極は、前記溶湯流動路形成体の底面との間に上下に開口した第１の隙間を形成し、前記出口側閉塞端板との間に前記長さ方向に開口した第２の隙間を形成するように、前記不純物除去空間に浮遊状態に設けられており、
前記電極装置と前記磁場装置とが、前記電極装置と前記磁場装置とが、前記不純物除去空間における溶湯に下向きにローレンツ力を印加して溶湯の密度を増大させて溶湯中の不純物を溶湯の表面に浮上させることが可能で、且つ、前記不純物除去空間において前記出口側電極よりも内側の溶湯を前記第１の隙間を通って前記第２の隙間へ圧送可能な、付力装置を構成している、
ものとして構成される。 Furthermore, embodiments of the present invention
A continuous impurity removing device from a molten metal for delivering a molten metal of a conductive metal to a metal product manufacturing apparatus of the next stage, comprising:
A molten metal flow passage body having a molten metal flow passage for causing the molten metal of the conductive metal introduced from the outside to flow toward the metal product manufacturing apparatus;
An inlet-side closed end plate and an outlet-side closed end plate provided in the molten metal flow passage body to partition the front and back of the molten metal flow passage to form an impurity removing space;
An electrode device comprising an inlet side electrode and an outlet side electrode which is provided in the impurity removing space and which is electrically opposed to the molten metal in the impurity removing space, facing in a length direction which is a flowing direction of the melt;
The molten metal flow passage forming body is provided outside, is opposed in the width direction intersecting with the length direction, and sandwiches the impurity removal space of the molten metal flow passage forming body in the width direction. A magnetic field device with a pair of permanent magnets capable of forming a magnetic field in the melt in the impurity removal space,
Equipped with
The outlet-side electrode forms a first gap that opens up and down with the bottom surface of the molten metal flow passage forming body, and the second electrode opens with the outlet-side closed end plate in the length direction. The impurity removal space is provided in a floating state so as to form a gap,
The electrode device and the magnetic field device apply the Lorentz force downward to the molten metal in the impurity removing space by the electrode device and the magnetic field device to increase the density of the molten metal and thereby increase the density of the molten metal to the surface of the molten metal An urging device capable of floating to the second clearance through the first gap and capable of pumping the molten metal inside the outlet side electrode in the Yes,
It is configured as a thing.

さらに、本発明の実施形態は、
導電性金属の溶湯を次段の金属製品製造装置へ送出するに当たり、金属の溶湯から不純物を除去する連続式不純物除去方法であって、
外部から流入させられた導電性金属の溶湯を金属製品製造装置へ向けて流動させる溶湯流動路を有する、溶湯流動路体を準備し、
前記溶湯流動路体に、入口側閉塞端板及び出口側閉塞端板を設けて、前記溶湯流動路の前後を仕切って、不純物除去空間を形成し、
前記不純物除去空間内に、溶湯の流れる方向である長さ方向に対向する、前記不純物除去空間内の溶湯と電気的に接触可能な、入口側電極及び出口側電極による電極装置を設け、
前記溶湯流動路形成体外部に、前記長さ方向と交叉する幅方向に対向し、前記溶湯流動路形成体の前記不純物除去空間を前記幅方向に挟む、互いに異極を対向させ、前記不純物除去空間内の溶湯中に磁場を形成可能な、一対の永久磁石による磁場装置を設け、
前記出口側電極を、前記溶湯流動路形成体の底面との間に上下に開口した第１の隙間を形成し、前記出口側閉塞端板との間に前記長さ方向に開口した第２の隙間を形成するように、前記不純物除去空間に浮遊状態に設け、
前記電極装置と前記磁場装置とによる付力装置によって、前記不純物除去空間における溶湯に下向きにローレンツ力を印加して溶湯の密度を増大させて、溶湯中の不純物を溶湯の表面に浮上させ、且つ、前記出口側電極よりも内側の溶湯を、前記第１の隙間を通って前記第２の隙間へ圧送する、
ものとして構成される。 Furthermore, embodiments of the present invention
A continuous impurity removing method for removing impurities from a molten metal in delivering a molten metal of a conductive metal to a metal product manufacturing apparatus of the next stage, the method comprising:
Preparing a molten metal flow passage body having a molten metal flow passage for causing the molten metal of the conductive metal introduced from the outside to flow toward the metal product manufacturing apparatus;
An inlet-side closed end plate and an outlet-side closed end plate are provided in the molten metal flow passage body to divide the front and back of the molten metal flow passage to form an impurity removing space,
The impurity removing space is provided with an electrode device having an inlet side electrode and an outlet side electrode, which can be in electrical contact with the molten metal in the impurity removing space, facing in the length direction which is the flowing direction of the molten metal.
The molten metal flow passage forming body is opposed to the outside in the width direction intersecting the length direction, and the impurity removal space of the molten metal flow passage forming body is sandwiched in the width direction. Providing a magnetic field device with a pair of permanent magnets capable of forming a magnetic field in the molten metal in the space;
A second gap is formed between the outlet side electrode and the bottom surface of the molten metal flow passage forming body, and a second gap is formed between the outlet side electrode and the outlet side closed end plate. The impurity removal space is provided in a floating state so as to form a gap,
A Lorentz force is applied downward to the molten metal in the impurity removing space by a biasing device by the electrode device and the magnetic field device to increase the density of the molten metal, thereby causing the impurities in the molten metal to float on the surface of the molten metal And pumping the molten metal inside the outlet side electrode to the second gap through the first gap,
It is configured as a thing.

本発明の実施形態の金属の溶湯からの連続式不純物除去装置の全体構成平面説明図。BRIEF DESCRIPTION OF THE DRAWINGS The whole structure planar explanatory drawing of the continuous-type impurity removal apparatus from the molten metal of the metal of embodiment of this invention. 図１のII−II線に沿った断面説明図。Cross-sectional explanatory drawing along the II-II line of FIG. 図２のIII−III線に沿った断面説明図。Cross-sectional explanatory drawing along the III-III line of FIG. 図２のIV-IV線に沿った断面説明図。Sectional explanatory drawing along the IV-IV line of FIG. 図２の一部に対応する使用状態説明図。The use state explanatory drawing corresponding to a part of FIG. ローレンツ力の発生を説明する説明図。Explanatory drawing explaining generation | occurrence | production of Lorentz force. （ａ）、（ｂ）は溶湯中の圧力状態を説明する説明図。(A), (b) is explanatory drawing explaining the pressure state in a molten metal. 図５に対応する変形例を示す部分説明図。FIG. 6 is a partial explanatory view showing a modified example corresponding to FIG. 5; （ａ）、（ｂ）は出口側閉塞端板の具体例を示す縦断説明図。(A), (b) is a vertical cross-sectional explanatory view showing a specific example of the outlet side closed end plate.

以下に、本発明の実施形態について図面を参照しながら説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の金属の溶湯からの連続式不純物除去装置１００の実施形態の全体構成を示す平面説明図である。金属は、導電性を有する非鉄金属又はその他の金属である。前記非鉄金属又はその他の金属は、Ａｌ，Ｃｕ，Ｚｎ又はこれらのうちの少なくとも２つの合金、あるいはＭｇ合金等の伝導体（導電体）の非鉄金属、あるいは、前記非鉄金属以外のその他の金属である。   FIG. 1 is an explanatory plan view showing an entire configuration of an embodiment of a continuous impurity removing apparatus 100 from a molten metal according to the present invention. The metal is a nonferrous metal or other metal having conductivity. The non-ferrous metal or the other metal is Al, Cu, Zn or an alloy of at least two of them, a non-ferrous metal of a conductor (conductor) such as Mg alloy, or any other metal than the above-mentioned non-ferrous metal is there.

図１には、実線の矢印ＡＲ１で溶湯Ｍの流れを、破線の矢印ＡＲ２で不純物ＩＭの移動を、それぞれ示している。つまり、溶湯Ｍが矢印ＡＲ１に沿って流れる途中で不純物ＩＭを横向きに除去することを示している。   In FIG. 1, the flow of the molten metal M is shown by the solid arrow AR1, and the movement of the impurity IM is shown by the broken arrow AR2. That is, it indicates that the impurity IM is removed laterally while the molten metal M flows along the arrow AR1.

より詳しくは、図１に一例として傾動式溶解炉を用いた場合を示す。この図１から分かるように、不純物除去装置１００は、前段の溶解炉２００からの金属の溶湯Ｍを受けて自己の内部を流動させ、流動する間に溶湯Ｍ中の不純物を液面近傍に積極的に浮かび上がらせて、その不純物を任意の手段で除去可能とし、不純物除去後の溶湯Ｍを後段のモールド３００に流入させて、高品質の溶湯Ｍから例えばビレットやスラブ等の製品（インゴット）を製造可能とするように構成されたものである。前記溶解炉２００及び前記モールド３００は、汎用のものを採用可能である。よって、例えば、本発明の不純物除去装置１００は、既設の溶解炉２００及びモールド３００に後から追加的に付設可能である。   More specifically, FIG. 1 shows the case where a tilting melting furnace is used as an example. As can be seen from FIG. 1, the impurity removing apparatus 100 receives the molten metal M of the metal from the melting furnace 200 at the previous stage and makes it flow internally, and while flowing, the impurities in the molten metal M are actively made near the liquid surface. The impurities M can be removed by any means, and the molten metal M after the impurity removal can be made to flow into the mold 300 in the subsequent stage, and products (ingots) such as billets and slabs from high quality molten metal M It is configured to be manufacturable. The melting furnace 200 and the mold 300 may be general-purpose ones. Therefore, for example, the impurity removal apparatus 100 of the present invention can be additionally attached to the existing melting furnace 200 and the mold 300 later.

前記溶解炉２００は、上述のように、汎用の傾動式溶解炉である。つまり、溶解炉２００は、上方が開口２となった容器状の溶解炉本体１を備える。傾動式溶解炉本体１の前方側（図中左側）の側壁には、溶湯Ｍの注ぎ口３が形成されている。後方の側壁には、汎用のガスバーナー４が取り付けられている。前記開口２から投入された導電性金属の原料は前記ガスバーナー４によって加熱されて溶湯Ｍとなって溶解炉本体１内に収納される。   The melting furnace 200 is a general-purpose tilting melting furnace as described above. That is, the melting furnace 200 is provided with the container-like melting furnace main body 1 in which the upper side is the opening 2. A pouring spout 3 of the molten metal M is formed on the side wall on the front side (left side in the drawing) of the tilting type melting furnace main body 1. A general-purpose gas burner 4 is attached to the rear side wall. The raw material of the conductive metal introduced from the opening 2 is heated by the gas burner 4 to be a molten metal M and stored in the melting furnace main body 1.

図２は図１のII−II線に沿った縦断面説明図である。この図２から分かるように、前記溶解炉本体１の外側の底部には起伏回動可能とするためのヒンジ機構６設けられている。これにより、直立状態から傾いた注ぎ状態へと、水平な軸６ａの回りに、起伏回動可能に構成されている。この溶解炉本体１は樋本体１０への溶湯の供給量を調節可能である。溶湯Ｍは、溶解炉本体１を傾けることにより、溶湯Ｍが前記注ぎ口３から次段の不純物除去装置１００に注がれる。この状態は、図５に示される。溶解炉本体１を傾ける角度の調整により、図２に示すヘッドｈが変わり、溶解炉本体１から樋本体１０への、溶湯Ｍの流入速度を変えることができる。なお、樋本体１０内の溶湯Ｍのレベルは出口側閉塞端板１１の高さを変えることにより行われる。また、図８に示すように、後述する一方の電極１３ｂは、入口側閉塞端板８から離して設けることもできる。このときの溶湯Ｍの流れは図８中に示す通りである。   FIG. 2 is a vertical cross-sectional explanatory view taken along the line II-II in FIG. As can be seen from FIG. 2, the outer bottom of the melting furnace main body 1 is provided with a hinge mechanism 6 for enabling ups and downs and pivots. Thereby, from the upright state to the inclined pouring state, it is configured to be able to turn up and down around the horizontal axis 6a. The melting furnace body 1 can adjust the amount of molten metal supplied to the crucible body 10. The molten metal M is poured from the spout 3 to the impurity removing apparatus 100 in the next stage by tilting the melting furnace body 1. This state is shown in FIG. By adjusting the angle at which the melting furnace body 1 is inclined, the head h shown in FIG. 2 is changed, and the inflow speed of the molten metal M from the melting furnace body 1 to the crucible main body 10 can be changed. In addition, the level of the molten metal M in the crucible main body 10 is performed by changing the height of the exit side closed end plate 11. Further, as shown in FIG. 8, one electrode 13 b described later can be provided separately from the inlet-side closed end plate 8. The flow of the molten metal M at this time is as shown in FIG.

前記溶解炉２００からの溶湯Ｍを受ける不純物除去装置１００は、受けた溶湯Ｍを、図１中右から左に流動させて次段のモールド３００に渡すいわゆる樋としての機能と、流動する過程で溶湯Ｍ中の不純物を液面近傍に浮上させる不純物を選択的に集積させる選択集積機能と、を有するものとして構成されている。   The impurity removing apparatus 100 for receiving the molten metal M from the melting furnace 200 flows the received molten metal M from the right to the left in FIG. And a selective accumulation function of selectively accumulating the impurities in the molten metal M to cause the impurities in the molten metal M to float in the vicinity of the liquid surface.

即ち、不純物除去装置１００は、特に図２から分かるように、樋本体（選別槽）（溶湯流動路体）１０と、それを幅方向に挟む磁場装置１２と、を有する。さらに、不純物除去装置１００は、特に図１から分かるように、前記樋本体１０の内部（溶湯流動路）に収納され、互いに対向する一対の電極１３ａ、１３ｂからなる電極装置１３を有する。磁場装置１２と電極装置１３は、追って詳しく説明するように、溶湯Ｍに下向きにローレンツ力ｆを加える付力装置３０を構成する。   That is, as can be seen particularly from FIG. 2, the impurity removing apparatus 100 has a crucible main body (sorting tank) (molten metal flow path body) 10 and a magnetic field device 12 sandwiching it in the width direction. Further, as can be seen particularly from FIG. 1, the impurity removing apparatus 100 has an electrode device 13 comprised of a pair of electrodes 13a and 13b which are accommodated in the crucible main body 10 (molten metal flow path) and face each other. The magnetic field device 12 and the electrode device 13 constitute a biasing device 30 for applying a Lorentz force f downward to the molten metal M, as described in detail later.

前記樋本体１０は、図１から分かるように、溶解炉２００からの溶湯Ｍをモールド３００に導くもので、図３から分かるように、耐火材で、横断面がほぼＵ字型のものとして、構成されている。樋本体１０は、溶湯Ｍの流れをスムーズにするため、図２おいて、左側を右側よりも低くなるように、勾配を持たせて設置することもできる。   The crucible main body 10 guides the molten metal M from the melting furnace 200 to the mold 300 as can be seen from FIG. 1 and, as can be seen from FIG. It is configured. In order to make the flow of the molten metal M smooth, the crucible main body 10 can also be installed with a gradient so that the left side is lower than the right side in FIG.

前記樋本体１０は、図２から分かるように、溶解炉２００からの溶湯Ｍを受ける流入補助板７Ａと、それに続く、入口側閉塞端板８、主流路底板９，出口側閉塞端板１１を有する。さらにこれらを幅方向に挟む左右の側板１５ａ、１５ｂを有する。前記左右の側板１５ａ、１５ｂと入口側閉塞端板８、出口側閉塞端板１１とにより、不純物除去部としての主流路（不純物除去空間）１４が形成される。   As can be seen from FIG. 2, the crucible main body 10 includes an inflow auxiliary plate 7A for receiving the molten metal M from the melting furnace 200, followed by an inlet side closed end plate 8, a main flow path bottom plate 9, and an outlet side closed end plate 11. Have. Furthermore, it has side plate 15a, 15b of the left and right which clamps these in the width direction. A main flow path (impurity removing space) 14 as an impurity removing portion is formed by the left and right side plates 15a and 15b, the inlet side closing end plate 8 and the outlet side closing end plate 11.

前記出口側閉塞端板１１は、その高さを調節可能に構成することもできる。その高さを調節可能な構成としては任意のものを採用できる。例えば、図９（ａ）、（ｂ）から分かるように、出口側閉塞端板１１を、互いにボルト締めした本体１１ａと補助板１１ｂとにより構成し、補助板１１ｂを本体１１ａに対して上下にずらすようにしてもよい。   The outlet side closed end plate 11 can also be configured to be adjustable in height. Arbitrary things can be employ | adopted as a structure which can adjust the height. For example, as can be seen from FIGS. 9 (a) and 9 (b), the outlet side closed end plate 11 is composed of the main body 11a and the auxiliary plate 11b bolted to each other, and the auxiliary plate 11b is vertically arranged with respect to the main body 11a. It may be shifted.

前記電極装置１３における入口側の電極１３ａは前記入口側閉塞端板８に密着状態に設けられており、出口側の電極１３ｂは、長さ方向には、前記出口側閉塞端板１１から隙間（第２の隙間）Ｇ２を隔てた状態に設けられ、深さ方向には、隙間（第１の隙間）Ｇ１だけ浮かした状態に、して浮遊状態に設けられている。これにより、溶湯Ｍは、後述するように、隙間Ｇ１、Ｇ２を通って流れ、前記出口側閉塞端板１１を越え、いわゆるオーバーフローして、主流路８から流出補助板７Ｂを介して前記モールド３００に向けて、流れ出ることになる。   The electrode 13a on the inlet side of the electrode device 13 is provided in close contact with the inlet-side closed end plate 8, and the electrode 13b on the outlet side is separated from the outlet-side closed end plate 11 in the length direction The second gap G2 is provided in a separated state, and the second gap G2 is provided in a floating state so as to float in the depth direction by only the gap (first gap) G1. Thereby, as described later, the molten metal M flows through the gaps G1 and G2, passes over the outlet side closed end plate 11, so-called overflow, and the mold 300 from the main flow path 8 through the outflow auxiliary plate 7B. Will flow into the

前記電極装置１３における一対の電極１３ａ、１３ｂ間には電源１６が接続されている。この電源１６は、直流電流の他、交流電流も流し得るものとして構成されている。さらに、直流電流は、極性を切り替え得るように構成されている。   A power supply 16 is connected between the pair of electrodes 13 a and 13 b in the electrode device 13. The power supply 16 is configured to be able to flow alternating current as well as direct current. Furthermore, the direct current is configured to be switchable in polarity.

前記樋本体１０の左右両側には、図１、図４から分かるように、前記磁場装置１２が設けられている。この磁場装置１２は、左右一対の永久磁石１２ａ、１２ｂを備え、これらの一対の永久磁石１２ａ、１２ｂで前記樋本体１０を挟んでいる。一対の永久磁石１２ａ、１２ｂは、互いに異極を向かい合わせており、この実施形態では、一対の永久磁石１２ａ、１２ｂの内側がそれぞれＳ極、Ｎ極に磁化されている。これにより、図４中、上側の永久磁石１２ｂからの磁力線ＭＬが樋本体１０中の溶湯Ｍを貫通して下側の永久磁石１２ａに達する。而して、実際の使用時には、図４から分かるように、一対の電極１３ａ、１３ｂ間に電流Ｉが流れている。よって、前記磁力線ＭＬと電流Ｉとが交叉することになる。これにより、図６に示すように、溶湯Ｍにはこれを下向きに押し下げるローレンツ力ｆが発生する。なお、前記磁場装置１２は、電磁石によって構成することもできる。   As can be seen from FIGS. 1 and 4, the magnetic field device 12 is provided on the left and right sides of the crucible main body 10. The magnetic field device 12 includes a pair of left and right permanent magnets 12a and 12b, and the pair of permanent magnets 12a and 12b sandwich the crucible main body 10. The pair of permanent magnets 12a and 12b have opposite poles to each other, and in this embodiment, the inside of the pair of permanent magnets 12a and 12b is magnetized to the S pole and the N pole, respectively. As a result, in FIG. 4, magnetic lines of force ML from the upper permanent magnet 12 b penetrate the molten metal M in the crucible main body 10 and reach the lower permanent magnet 12 a. Thus, in actual use, as can be seen from FIG. 4, the current I flows between the pair of electrodes 13a and 13b. Therefore, the magnetic force lines ML and the current I cross each other. As a result, as shown in FIG. 6, a Lorentz force f is generated in the molten metal M to push it downward. The magnetic field device 12 can also be configured by an electromagnet.

次に、本発明の実施形態の動作について説明する。   Next, the operation of the embodiment of the present invention will be described.

図１、図２から分かるように、導電性金属を溶解炉２００に投入し、加熱、溶解すると、溶湯Ｍの増加、及び、図５のように傾けることにより、溶湯Ｍは溶解炉２００から主流路１４に流入する。   As can be seen from FIG. 1 and FIG. 2, when the conductive metal is charged into the melting furnace 200 and heated and melted, the molten metal M increases from the melting furnace 200 by increasing the molten metal M and tilting as shown in FIG. It flows into the road 14.

この主流路１４においては、図４からわかるように、磁力線ＭＬと電流Ｉとが交叉している。この概念が前述の図６に示される。これにより、ローレンツ力ｆが発生し、溶湯Ｍにこれを下向きに押し下げる向きに力として加わる。これにより、溶湯Ｍ内部の圧力は、表面より底部にいくほど大きなものとなる。この場合の圧力分布の状態は図７（ａ）に示される。つまり、溶湯Ｍの密度は、前記ローレンツ力ｆの他重力により、底部ほど大きなものとなる。この密度は、溶湯Ｍ内部に含まれる不純物ＩＭの浮力に大きな影響を及ぼす。つまり、密度が大きいと不純物ＩＭには大きな浮力が作用することになる。   In the main flow path 14, as can be seen from FIG. 4, the magnetic force lines ML and the current I cross each other. This concept is illustrated in FIG. 6, described above. As a result, a Lorentz force f is generated, and is applied to the molten metal M in the direction to push it downward. Thereby, the pressure inside the molten metal M becomes so large that it goes to a bottom part rather than the surface. The state of the pressure distribution in this case is shown in FIG. 7 (a). That is, the density of the molten metal M becomes larger toward the bottom due to the other gravity of the Lorentz force f. This density greatly affects the buoyancy of the impurity IM contained in the molten metal M. That is, when the density is high, a large buoyancy acts on the impurity IM.

よって、前記ローレンツ力ｆが発生した状態においては、溶湯Ｍ中の不純物ＩＭは溶湯Ｍ中を上昇し、液面に至る。つまり、不純物ＩＭには自重により、溶湯Ｍ中を沈下しようとする。また、不純物ＩＭには溶湯Ｍによって浮力が作用する。而して、溶湯Ｍの密度が上がると、溶湯Ｍ中の不純物ＩＭには大きな浮力が作用することになる。よって、この浮力と前記沈下力との差に応じて不純物ＩＭは上下する。而して、前記ローレンツ力ｆを所期のものに設定することにより、前記浮力が前記沈下力よりも大きくなり、不純物ＩＭは溶湯Ｍ中を上昇し、液面近傍に至る。この動作は、溶湯Ｍが主流路１４を流れる過程において連続的に行われる。   Therefore, in the state where the Lorentz force f is generated, the impurity IM in the molten metal M rises in the molten metal M and reaches the liquid level. That is, the impurity IM tries to settle in the molten metal M by its own weight. In addition, buoyancy acts on the impurity IM by the molten metal M. Thus, when the density of the molten metal M increases, a large buoyancy acts on the impurities IM in the molten metal M. Therefore, the impurity IM moves up and down according to the difference between the buoyancy and the sinking force. By setting the Lorentz force f to a desired value, the buoyancy becomes larger than the settling force, and the impurity IM rises in the molten metal M and reaches near the liquid surface. This operation is continuously performed in the process of the molten metal M flowing through the main flow path 14.

このようにして、溶湯Ｍの表面近傍に不純物ＩＭが浮かび上がる。浮かび上がった不純物ＩＭを、自動的に或いは人為的に、任意の手段で、図３から分かるように、不純物除去板７Ｃを介して不純物受４０に排出する。不純物除去板７Ｃは、図３に示すように、横断面が山形をしている。   Thus, the impurities IM float in the vicinity of the surface of the molten metal M. The floated impurities IM are discharged to the impurity receiver 40 through the impurity removing plate 7C automatically or artificially and by any means, as can be seen from FIG. As shown in FIG. 3, the impurity removing plate 7C has a mountain-shaped cross section.

また、前記したように、樋本体１０において、溶湯Ｍは、図７（ｂ）に示すように圧力の付加により押し下げられ液面が下がる。これに伴い、溶湯Ｍは、図２から分かるように、隙間Ｇ１を通って隙間Ｇ２に至る。これにより、図２に示すように、ヘッドｈが生じ、この分だけの圧力が樋本体１０内の溶湯Ｍに掛かることになる。ここで、不純物ＩＭは溶湯Ｍ中で上昇して液面近傍に集まるため、前記隙間Ｇ１を通る溶湯Ｍ中には不純物ＩＭが実質的に含まれていない。つまり、隙間Ｇ２には、不純物ＩＭが実質的に含まれていない溶湯Ｍが存することになる。而して、隙間Ｇ２においては溶湯Ｍの液面が上がる。このため、実質的に浄化された溶湯Ｍが、前記出口側閉塞端板１１を乗り越えて、流出補助板７Ｂを介して前記モールド３０に流入する。これにより、不純物ＩＭの少ない高品質の製品が得られる。図２のｈが、２つの液面のヘッドを示す。   Further, as described above, in the crucible main body 10, the molten metal M is pushed down by the application of pressure as shown in FIG. Along with this, the molten metal M reaches the gap G2 through the gap G1 as can be seen from FIG. As a result, as shown in FIG. 2, the head h is generated, and the pressure for this amount is applied to the molten metal M in the crucible main body 10. Here, since the impurity IM rises in the molten metal M and gathers in the vicinity of the liquid surface, the molten metal M passing through the gap G1 substantially does not contain the impurity IM. That is, in the gap G2, the molten metal M substantially containing no impurity IM is present. Thus, the liquid level of the molten metal M rises in the gap G2. Therefore, the substantially cleaned molten metal M passes over the outlet-side closed end plate 11 and flows into the mold 30 through the outflow assisting plate 7B. Thereby, a high quality product with few impurities IM can be obtained. H of FIG. 2 shows the head of two liquid levels.

上述した、溶湯Ｍ中の不純物ＩＭが、前記ローレンツ力ｆを加えることにより、溶湯Ｍ中で上昇させることができることを、以下に詳しく説明する。   The fact that the above-described impurities IM in the molten metal M can be raised in the molten metal M by applying the Lorentz force f will be described in detail below.

図４における、溶湯Ｍ中の磁場強度をＢとする。ここで、図７（ａ）、（ｂ）から分かるように、ローレンツ力ｆが下向きに発生したとする。この際、樋本体１０の底部に作用する力Ｆは、重力による力ｆｇと、ローレンツ力ｆによる力ｆｍとの和となり、
Ｆ＝ｆｇ＋ｆｍ
となる。 The magnetic field strength in the molten metal M in FIG. Here, as can be understood from FIGS. 7A and 7B, it is assumed that the Lorentz force f is generated downward. At this time, the force F acting on the bottom of the crucible body 10 is the sum of the force fg by gravity and the force fm by Lorentz force f,
F = fg + fm
It becomes.

ここで、樋本体１０の水平面積Ａは、Ａ＝ｌ×ａ （ｌ：樋本体１０の長さ、ａ：樋本体１０の幅）であるから、樋本体１０の底部における圧力Ｐは、
Ｐ＝Ｆ／Ａ
となる。さらに、ここで、一対の電極１３ａ、１３ｂ間の電流密度が一定であるとすれば、ローレンツ力ｆは、溶湯表面で０、底部でＩ×Ｂ×ｌ（Ｎ）となる。よって、圧力は底部が最も高くなる。この状態は図７（ａ）、（ｂ）に示される。 Here, since the horizontal area A of the crucible main body 10 is A = l × a (1: length of the crucible main body 10, a: width of the crucible main body 10), the pressure P at the bottom of the crucible main body 10 is
P = F / A
It becomes. Furthermore, assuming that the current density between the pair of electrodes 13a and 13b is constant, the Lorentz force f is 0 at the surface of the molten metal, and I × B × 1 (N) at the bottom. Thus, the pressure is highest at the bottom. This state is shown in FIGS. 7 (a) and 7 (b).

さらに、ローレンツ力ｆと重力による２つの影響を受けた溶湯Ｍの見かけの密度をρｍとし、混入不純物粒子の密度をρｓ、粒子の大きさをＶとする。不純物粒子には、溶湯Ｍから受ける浮力ｆａと、重力による力ｆｇが同時に作用する。この時に、不純物粒子が受ける力をＦｓとすれば、
Ｆｓ＝ｆａ−ｆｇ
＝ρｍ×Ｖ−ρｓ×Ｖ
＝（ρｍ−ρｓ）×Ｖ
となる。従って、不純物粒子は溶湯Ｍ中で下記のような動きを採る。
（ａ）ρｍ−ρｓ＞０ 浮上
（ｂ）ρｍ−ρｓ＜０ 沈下
（ｃ）ρｍ−ρｓ＝０ 浮遊 Further, the apparent density of the molten metal M influenced by the Lorentz force f and the gravity is denoted by ρm, the density of the mixed impurity particle is denoted by ss, and the size of the particle is denoted by V. A buoyancy fa received from the molten metal M and a force fg due to gravity act on the impurity particles simultaneously. At this time, let Fs be the force that the impurity particles receive,
Fs = fa-fg
= Ρm × V-−s × V
= (Ρm-ss) × V
It becomes. Therefore, the impurity particles take the following action in the molten metal M.
(A) m m-s s> 0 float (b) m m-s s <0 settlement (c) m m-s s 0

以上に説明した本発明の実施形態によれば以下の利点が得られる。   According to the embodiments of the present invention described above, the following advantages can be obtained.

（１）産業界で標準技術となっている連続鋳造法に合致した、溶湯Ｍの連続浄化が可能である。
（２）不純物の浮上速度は、不純物の粒径、密度等により変わるが、浮上速度の小さい対象物（小粒径物）の分離の場合は、流速を遅くするとか樋本体を長くする等によって、樋本体（選別槽）における溶湯Ｍの滞留時間を長くすれば良い。
（３）物理的、機械的な浄化ではないため、フィルターの交換の必要性がなく、作業効率が良いだけでなく、コストも安く抑えられる。
（４）溶湯の比重は、磁場強度や電流値を変えることで容易に変えることができ、不純物除去対象の溶湯Ｍの種類に応じた不純物除去作業を行うことができる。 (1) Continuous purification of the molten metal M is possible in accordance with the continuous casting method which is a standard technology in the industry.
(2) The floatation speed of impurities varies depending on the particle size, density, etc. of the impurities, but in the case of separation of an object with a small floatation speed (small particle size), by slowing the flow rate or lengthening the crucible body The residence time of the molten metal M in the crucible main body (sorting tank) may be extended.
(3) Since it is not physical and mechanical purification, there is no need to replace the filter, the working efficiency is good, and the cost can be reduced.
(4) The specific gravity of the molten metal can be easily changed by changing the magnetic field strength and the current value, and the impurity removing operation can be performed according to the type of the molten metal M to be subjected to the impurity removal.

Claims (12)

導電性金属の溶湯を次段の金属製品製造装置へ送出する、金属の溶湯からの連続式不純物除去装置であって、
外部から流入させられた導電性金属の溶湯を金属製品製造装置へ向けて流動させる溶湯流動路を有する、溶湯流動路体と、
前記溶湯流動路体に設けられた、前記溶湯流動路の前後を仕切って、不純物除去空間を形成する、入口側閉塞端板及び出口側閉塞端板と、
前記不純物除去空間内に設けられ、溶湯の流れる方向である長さ方向に対向する、前記不純物除去空間内の溶湯と電気的に接触可能な、入口側電極及び出口側電極による電極装置と、
前記溶湯流動路体の外部に設けられ、前記長さ方向と交叉する幅方向に対向し、前記溶湯流動路体の前記不純物除去空間を前記幅方向に挟む、互いに異極を対向させ、前記不純物除去空間内の溶湯中に磁場を形成可能な、一対の永久磁石による磁場装置と、
を備え、
前記電極装置と前記磁場装置とが、前記不純物除去空間における溶湯に下向きにローレンツ力を印加して溶湯の密度を増大させて溶湯中の不純物を溶湯の表面に浮上させることが可能な、付力装置を構成しており、
前記出口側電極は、前記溶湯流動路体の底面との間に上下に開口した第１の隙間を形成し、前記出口側閉塞端板との間に前記長さ方向に開口した第２の隙間を形成するように、前記不純物除去空間に浮遊状態に設けられており、前記第１の隙間及び前記第２の隙間を通過した溶湯を前記出口側閉塞端板からオーバーフローさせるようにした、
ことを特徴とする金属の溶湯からの連続式不純物除去装置。 A continuous impurity removing device from a molten metal for delivering a molten metal of a conductive metal to a metal product manufacturing apparatus of the next stage, comprising:
A molten metal flow passage body having a molten metal flow passage for causing the molten metal of the conductive metal introduced from the outside to flow toward the metal product manufacturing apparatus;
An inlet-side closed end plate and an outlet-side closed end plate provided in the molten metal flow passage body to partition the front and back of the molten metal flow passage to form an impurity removing space;
An electrode device comprising an inlet side electrode and an outlet side electrode which is provided in the impurity removing space and which is electrically opposed to the molten metal in the impurity removing space, facing in a length direction which is a flowing direction of the melt;
The molten metal flow passage body is provided outside, is opposed in the width direction intersecting the length direction, and sandwiches the impurity removal space of the molten metal flow passage body in the width direction, with different poles facing each other, the impurities A magnetic field device with a pair of permanent magnets capable of forming a magnetic field in the melt in the removal space,
Equipped with
The electrode device and the magnetic field device apply a Lorentz force downward to the molten metal in the impurity removing space to increase the density of the molten metal, thereby causing the impurities in the molten metal to float on the surface of the molten metal The device is configured
The outlet-side electrode forms a first gap that opens up and down with the bottom surface of the molten metal flow path body, and a second gap that opens in the longitudinal direction between the outlet-side closed end plate and the outlet-side closed end plate so as to form a provided in the floating state to the impurity removal space, and the first gap and the molten metal that has passed through the second gap so as to overflow from the outlet closed end plate,
What is claimed is: 1. A continuous impurity removing device from molten metal of metal. 前記電極装置における前記一対の電極には、前記ローレンツ力を調節すべく電流量を調節可能な電源が接続されている、ことを特徴とする請求項１に記載の金属の溶湯からの連続式不純物除去装置。   The continuous impurity from the molten metal according to claim 1, wherein the pair of electrodes in the electrode device is connected with a power supply capable of adjusting the amount of current to adjust the Lorentz force. Removal device. 前記出口側閉塞端板は、前記不純物除去空間の長さを調節すべく、前記溶湯流動路体内における取り付け位置を、前記長さ方向に調節可能に構成されている、ことを特徴とする請求項１又は２に記載の金属の溶湯からの連続式不純物除去装置。   The outlet side closed end plate is configured to adjust the mounting position in the molten metal flow path in the longitudinal direction so as to adjust the length of the impurity removal space. The continuous-type impurity removal apparatus from the molten metal of the metal as described in 1 or 2. 前記出口側閉塞端板は、その高さを調節可能に構成されている、ことを特徴とする請求項１乃至３のいずれか１つに記載の金属の溶湯からの連続式不純物除去装置。 The apparatus for removing impurities from a molten metal according to any one of claims 1 to 3, wherein the outlet side closed end plate is configured to be adjustable in height . 前記溶湯流動路体の前段には、前記溶湯流動路体に金属の溶湯を供給する、供給量を調節可能な、溶湯供給装置が設けられている、ことを特徴とする請求項１乃至４のいずれか１つに記載の金属の溶湯からの連続式不純物除去装置。   The molten metal supply apparatus which can supply the molten metal of the metal to the said molten metal flow path body and which can adjust the supply amount is provided in the front | former stage of the said molten metal flow path body. The continuous-type impurity removal apparatus from the molten metal of any one of the metals. 導電性金属の溶湯を次段の金属製品製造装置へ送出するに当たり、金属の溶湯から不純物を除去する連続式不純物除去方法であって、
外部から流入させられた導電性金属の溶湯を金属製品製造装置へ向けて流動させる溶湯流動路を有する、溶湯流動路体を準備し、
前記溶湯流動路体に、入口側閉塞端板及び出口側閉塞端板を設けて、前記溶湯流動路の前後を仕切って、不純物除去空間を形成し、
前記不純物除去空間内に、溶湯の流れる方向である長さ方向に対向する、前記不純物除去空間内の溶湯と電気的に接触可能な、入口側電極及び出口側電極による電極装置を設け、
前記溶湯流動路体の外部に、前記長さ方向と交叉する幅方向に対向し、前記溶湯流動路体の前記不純物除去空間を前記幅方向に挟む、互いに異極を対向させ、前記不純物除去空間内の溶湯中に磁場を形成可能な、一対の永久磁石による磁場装置を設け、
前記電極装置と前記磁場装置とによる付力装置によって、前記不純物除去空間における溶湯に下向きにローレンツ力を印加して溶湯の密度を増大させて、溶湯中の不純物を溶湯の表面に浮上させ、
前記出口側電極を、前記不純物除去空間に浮遊状態に設けて、前記溶湯流動路体の底面との間に上下に開口した第１の隙間を形成し、前記出口側閉塞端板との間に前記長さ方向に開口した第２の隙間を形成し、前記第１の隙間及び前記第２の隙間を通過した溶湯を前記出口側閉塞端板からオーバーフローさせるようにした、
ことを特徴とする金属の溶湯からの連続式不純物除去方法。 A continuous impurity removing method for removing impurities from a molten metal in delivering a molten metal of a conductive metal to a metal product manufacturing apparatus of the next stage, the method comprising:
Preparing a molten metal flow passage body having a molten metal flow passage for causing the molten metal of the conductive metal introduced from the outside to flow toward the metal product manufacturing apparatus;
An inlet-side closed end plate and an outlet-side closed end plate are provided in the molten metal flow passage body to divide the front and back of the molten metal flow passage to form an impurity removing space,
The impurity removing space is provided with an electrode device having an inlet side electrode and an outlet side electrode, which can be in electrical contact with the molten metal in the impurity removing space, facing in the length direction which is the flowing direction of the molten metal.
Opposite the molten metal flow passage body in the width direction intersecting with the length direction, sandwiching the impurity removal space of the molten metal flow passage body in the width direction, opposite poles mutually facing each other, the impurity removal space Providing a magnetic field device with a pair of permanent magnets capable of forming a magnetic field in the molten metal
A Lorentz force is applied downward to the molten metal in the impurity removing space by a biasing device using the electrode device and the magnetic field device to increase the density of the molten metal, thereby causing the impurities in the molten metal to float on the surface of the molten metal.
The outlet side electrode is provided in a floating state in the impurity removing space to form a first gap opened up and down with the bottom surface of the molten metal flow path body, and between the outlet side closed end plate forming a second gap which is open the lengthwise and the first gap and the molten metal that has passed through the second gap so as to overflow from the outlet closed end plate,
What is claimed is: 1. A method for removing impurities from a molten metal according to claim 1. 電源から、前記電極装置における前記一対の電極に加える電流量を調節して、前記ローレンツ力を調節する、ことを特徴とする請求項６に記載の金属の溶湯からの連続式不純物除去方法。 7. The method according to claim 6 , wherein the Lorentz force is adjusted by adjusting the amount of current applied to the pair of electrodes in the electrode device from a power supply. 前記出口側閉塞端板の、前記溶湯流動路体内における取り付け位置を、前記長さ方向に調節することにより、前記不純物除去空間の長さを調節する、ことを特徴とする請求項６又７に記載の金属の溶湯からの連続式不純物除去方法。 The length of the said impurity removal space is adjusted by adjusting the attachment position in the said molten metal flow path body of the said outlet side closed end plate in the said length direction, 8 or 7 The continuous impurity removal method from the molten metal of description metal. 前記出口側閉塞端板を、その高さを調節可能に構成した、ことを特徴とする請求項６乃至８のいずれか１つに記載の金属の溶湯からの連続式不純物除去方法。 The outlet closed end plate to adjustably configure its height, continuous method of removing impurities from molten metal as claimed in any one of claims 6 to 8, characterized in that. 前記溶湯流動路体の前段に設けた溶湯供給装置により、前記溶湯流動路体に金属の溶湯を供給する供給量を調節する、ことを特徴とする請求項６乃至９のいずれか１つに記載の連続式不純物除去方法。 10. The molten metal supply device provided at the front stage of the molten metal flow passage controls the supply amount of the molten metal to the molten metal flow passage, according to any one of claims 6 to 9. Continuous impurity removal method. 導電性金属の溶湯を次段の金属製品製造装置へ送出する、金属の溶湯からの連続式不純物除去装置であって、
外部から流入させられた導電性金属の溶湯を金属製品製造装置へ向けて流動させる溶湯流動路を有する、溶湯流動路体と、
前記溶湯流動路体に設けられた、前記溶湯流動路の前後を仕切って、不純物除去空間を形成する、入口側閉塞端板及び出口側閉塞端板と、
前記不純物除去空間内に設けられ、溶湯の流れる方向である長さ方向に対向する、前記不純物除去空間内の溶湯と電気的に接触可能な、入口側電極及び出口側電極による電極装置と、
前記溶湯流動路体の外部に設けられ、前記長さ方向と交叉する幅方向に対向し、前記溶湯流動路体の前記不純物除去空間を前記幅方向に挟む、互いに異極を対向させ、前記不純物除去空間内の溶湯中に磁場を形成可能な、一対の永久磁石による磁場装置と、
を備え、
前記出口側電極は、前記溶湯流動路体の底面との間に上下に開口した第１の隙間を形成し、前記出口側閉塞端板との間に前記長さ方向に開口した第２の隙間を形成するように、前記不純物除去空間に浮遊状態に設けて、前記第１の隙間及び前記第２の隙間を通過した溶湯を前記出口側閉塞端板からオーバーフローさせるようにし、
前記電極装置と前記磁場装置とが、前記不純物除去空間における溶湯に下向きにローレンツ力を印加して溶湯の密度を増大させて溶湯中の不純物を溶湯の表面に浮上させることが可能で、且つ、前記不純物除去空間において前記出口側電極よりも内側の溶湯を前記第１の隙間を通って前記第２の隙間へ圧送可能な、付力装置を構成している、
ことを特徴とする金属の溶湯からの連続式不純物除去装置。 A continuous impurity removing device from a molten metal for delivering a molten metal of a conductive metal to a metal product manufacturing apparatus of the next stage, comprising:
A molten metal flow passage body having a molten metal flow passage for causing the molten metal of the conductive metal introduced from the outside to flow toward the metal product manufacturing apparatus;
An inlet-side closed end plate and an outlet-side closed end plate provided in the molten metal flow passage body to partition the front and back of the molten metal flow passage to form an impurity removing space;
An electrode device comprising an inlet side electrode and an outlet side electrode which is provided in the impurity removing space and which is electrically opposed to the molten metal in the impurity removing space, facing in a length direction which is a flowing direction of the melt;
The molten metal flow passage body is provided outside, is opposed in the width direction intersecting the length direction, and sandwiches the impurity removal space of the molten metal flow passage body in the width direction, with different poles facing each other, the impurities A magnetic field device with a pair of permanent magnets capable of forming a magnetic field in the melt in the removal space,
Equipped with
The outlet-side electrode forms a first gap that opens up and down with the bottom surface of the molten metal flow path body, and a second gap that opens in the longitudinal direction between the outlet-side closed end plate and the outlet-side closed end plate To form a floating state in the impurity removing space so that the molten metal that has passed through the first gap and the second gap overflows from the outlet-side closed end plate;
The electrode device and the magnetic field device can apply Lorentz force downward to the molten metal in the impurity removal space to increase the density of the molten metal and cause the impurities in the molten metal to float on the surface of the molten metal, The pressing device is configured to be capable of pressure-feeding the molten metal inside the outlet side electrode to the second gap through the first gap in the impurity removal space,
What is claimed is: 1. A continuous impurity removing device from molten metal of metal. 導電性金属の溶湯を次段の金属製品製造装置へ送出するに当たり、金属の溶湯から不純物を除去する連続式不純物除去方法であって、
外部から流入させられた導電性金属の溶湯を金属製品製造装置へ向けて流動させる溶湯流動路を有する、溶湯流動路体を準備し、
前記溶湯流動路体に、入口側閉塞端板及び出口側閉塞端板を設けて、前記溶湯流動路の前後を仕切って、不純物除去空間を形成し、
前記不純物除去空間内に、溶湯の流れる方向である長さ方向に対向する、前記不純物除去空間内の溶湯と電気的に接触可能な、入口側電極及び出口側電極による電極装置を設け、
前記溶湯流動路体の外部に、前記長さ方向と交叉する幅方向に対向し、前記溶湯流動路体の前記不純物除去空間を前記幅方向に挟む、互いに異極を対向させ、前記不純物除去空間内の溶湯中に磁場を形成可能な、一対の永久磁石による磁場装置を設け、
前記出口側電極を、前記溶湯流動路体の底面との間に上下に開口した第１の隙間を形成し、前記出口側閉塞端板との間に前記長さ方向に開口した第２の隙間を形成するように、前記不純物除去空間に浮遊状態に設けて、前記第１の隙間及び前記第２の隙間を通過した溶湯を前記出口側閉塞端板からオーバーフローさせるようにし、
前記電極装置と前記磁場装置とによる付力装置によって、前記不純物除去空間における溶湯に下向きにローレンツ力を印加して溶湯の密度を増大させて、溶湯中の不純物を溶湯の表面に浮上させ、且つ、前記出口側電極よりも内側の溶湯を、前記第１の隙間を通って前記第２の隙間へ圧送する、
ことを特徴とする金属の溶湯からの連続式不純物除去方法。 A continuous impurity removing method for removing impurities from a molten metal in delivering a molten metal of a conductive metal to a metal product manufacturing apparatus of the next stage, the method comprising:
Preparing a molten metal flow passage body having a molten metal flow passage for causing the molten metal of the conductive metal introduced from the outside to flow toward the metal product manufacturing apparatus;
An inlet-side closed end plate and an outlet-side closed end plate are provided in the molten metal flow passage body to divide the front and back of the molten metal flow passage to form an impurity removing space,
The impurity removing space is provided with an electrode device having an inlet side electrode and an outlet side electrode, which can be in electrical contact with the molten metal in the impurity removing space, facing in the length direction which is the flowing direction of the molten metal.
Opposite the molten metal flow passage body in the width direction intersecting with the length direction, sandwiching the impurity removal space of the molten metal flow passage body in the width direction, opposite poles mutually facing each other, the impurity removal space Providing a magnetic field device with a pair of permanent magnets capable of forming a magnetic field in the molten metal
A second gap is formed between the outlet side electrode and the bottom surface of the molten metal flow passage, and a second gap is formed between the outlet side closed end plate and the first gap. To form a floating state in the impurity removing space so that the molten metal that has passed through the first gap and the second gap overflows from the outlet-side closed end plate;
A Lorentz force is applied downward to the molten metal in the impurity removing space by a biasing device by the electrode device and the magnetic field device to increase the density of the molten metal, thereby causing the impurities in the molten metal to float on the surface of the molten metal And pumping the molten metal inside the outlet side electrode to the second gap through the first gap,
What is claimed is: 1. A method for removing impurities from a molten metal according to claim 1.
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