WO2019198476A1 - Procédé d'élimination d'impuretés - Google Patents

Procédé d'élimination d'impuretés Download PDF

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Publication number
WO2019198476A1
WO2019198476A1 PCT/JP2019/012518 JP2019012518W WO2019198476A1 WO 2019198476 A1 WO2019198476 A1 WO 2019198476A1 JP 2019012518 W JP2019012518 W JP 2019012518W WO 2019198476 A1 WO2019198476 A1 WO 2019198476A1
Authority
WO
WIPO (PCT)
Prior art keywords
molten metal
intermetallic compound
impurity removal
removal method
alloy
Prior art date
Application number
PCT/JP2019/012518
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English (en)
Japanese (ja)
Inventor
山口　勝弘
憲章 中塚
Original Assignee
株式会社神戸製鋼所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP2019042157A external-priority patent/JP7123834B2/ja
Application filed by 株式会社神戸製鋼所 filed Critical 株式会社神戸製鋼所
Publication of WO2019198476A1 publication Critical patent/WO2019198476A1/fr

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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
    • C22B21/00—Obtaining aluminium
    • C22B21/06—Obtaining aluminium refining
    • 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
    • C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
    • 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
    • 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
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents

Definitions

  • the present invention relates to a method for removing impurities.
  • Al is considered to be a metal material with excellent recyclability, and many Al products made from Al expanded material such as aluminum cans and die-cast products are remelted after disposal and recycled to new products. Is done.
  • impurities are attached to Al products after disposal, and the concentration of impurity elements gradually increases by repeated recycling, so it is common to cascade-recycle to products with less component specifications. .
  • Non-Patent Document 1 a technique using a three-layer electrolytic refining method or a segregation method in a process of manufacturing an aluminum ingot is disclosed (see Non-Patent Document 1).
  • the added Mn may increase as an impurity.
  • the technique disclosed in Non-Patent Document 1 can in principle remove Fe by this method, the yield may be lowered as a method of refining scrap containing a large amount of impurity elements.
  • the three-layer electrolysis method has poor profitability in Japan where the power cost is high, and the segregation method has a risk that the yield decreases as the impurity concentration of the raw material increases.
  • the above prior art is not sufficient as a method for recycling Al scrap containing a large amount of impurities recovered from the city in Japan.
  • the present invention has been made in view of such circumstances, and an object thereof is to provide an impurity removal method capable of efficiently removing impurities that are mixed in Al or an Al alloy and are difficult to remove from the molten metal.
  • Al or an Al alloy molten metal containing impurities contains Mg, which is an essential element in a JIS-A5000 series Al alloy or the like, at a high concentration, and the molten metal is an Al—Mg binary phase diagram. It was found that an intermetallic compound containing an impurity element as an initial crystal was produced by maintaining the temperature around the liquidus temperature. Based on this finding, it was conceived that the impurity concentration can be reduced by removing the intermetallic compound.
  • the impurity removal method is such that Mg is contained at a high concentration of 11% by mass or more with respect to Al or Al alloy molten metal, and the molten metal is held in a temperature range of 470 ° C. or higher and 650 ° C. or lower, thereby forming an impurity element as an initial crystal.
  • An intermetallic compound containing is efficiently produced.
  • the reason why the effect of the present invention can be obtained is assumed as follows. By adding 11 mass% or more of Mg to the Al or Al alloy molten metal to obtain an Al-Mg alloy containing Mg at a high concentration, the liquidus temperature of the Al or Al alloy molten metal is lowered.
  • an intermetallic compound containing an impurity element generated during solidification of the Al alloy molten metal is likely to be formed as a primary crystal. Further, it is presumed that the activity of the impurity element is increased by Mg, and further the generation of intermetallic compounds is promoted. Then, by removing this intermetallic compound from the molten metal, the impurity concentration can efficiently correspond to the standard concentration of A5000 (Al—Mg alloy) defined by JIS. Moreover, since Mg is an essential element in the A5000 system, a removal step is unnecessary, and the molten metal can be diluted and reused for the Al product.
  • the holding time in the holding step is preferably 5 minutes or more. When the holding time is 5 minutes or longer, the compound can be effectively grown coarsely.
  • the impurity contains Fe and the intermetallic compound contains Al and Fe.
  • the impurity Fe can be efficiently removed from the Al—Mg melt.
  • the impurity contains Si and the intermetallic compound contains Mg and Si.
  • the impurity Si can be efficiently removed from the Al—Mg melt.
  • the impurities include Mn, Co, Ti, V, Zr, Cr or a combination thereof, and the intermetallic compound includes Al and Mn, Co, Ti, V, Zr, Cr, or a combination thereof. preferable.
  • the impurity includes Mn, Co, Ti, V, Zr, Cr or a combination thereof, and the intermetallic compound is Al and Mn, Co, Ti, V, Zr, Cr, or a combination thereof. Therefore, impurities such as Mn, Co, Ti, V, Zr, and Cr can be efficiently removed from the Al—Mg-based molten metal.
  • a cooling pipe supplied with a cooling medium in the separation step is inserted into the molten metal to crystallize the intermetallic compound on the surface of the cooling pipe.
  • a cooling pipe to which a cooling medium is supplied in the separation step is inserted into the molten metal, and locally held at 470 ° C. or more and 650 ° C. or less to crystallize the intermetallic compound on the surface of the cooling pipe. The intermetallic compound can be efficiently separated and removed without cooling the whole.
  • the intermetallic compound can be easily and efficiently removed from the molten metal outside the system.
  • the intermetallic compound is allowed to settle or float by allowing the molten metal to stand in the separation step.
  • the intermetallic compound having a specific gravity different from that of the molten metal can be removed at a low cost by allowing the molten metal to stand in the separation step so that the intermetallic compound settles or floats.
  • the separation step It is preferable to centrifuge the molten metal in the separation step. Since the molten metal is centrifuged in the separation step, the intermetallic compound can be efficiently removed from the molten metal.
  • an inert gas containing N 2 gas, Ar gas or He gas, chlorine gas, flux, or a combination thereof is introduced into the molten metal, and the intermetallic compound is introduced into the bubbles, flux or After adsorbing to these combinations, it is preferably removed by floating and separating.
  • an inert gas containing N 2 gas, Ar gas or He gas, chlorine gas, flux, or a combination thereof is introduced into the molten metal, and the intermetallic compound is introduced into the bubbles, flux or After adsorbing to these combinations, floating and separating, and scraping out the intermetallic compound using a jig or the like, the intermetallic compound can be efficiently removed out of the system.
  • the impurity removal method of the present invention can efficiently remove impurities that are mixed in Al or Al alloy and are difficult to remove from the molten metal.
  • the impurity removal method of the present invention is a method of removing impurities that are mixed in Al or Al alloy and are difficult to remove from the molten metal using Mg, which is a 5000-based essential element.
  • the impurity removal method includes an Mg addition step of adding Mg or Mg alloy to the molten metal, a temperature holding step of holding the molten metal after the adding step in a predetermined temperature range, and an intermetallic compound generated in the holding step. An intermetallic compound separation step of separating.
  • the impurity removal method further includes a cooling step after the temperature holding step.
  • the impurity removal method is a method for efficiently removing metal elements that are difficult to remove in the Al recycling process from the Al—Mg melt.
  • Mg which is an essential element in a JIS-A5000 series Al alloy or the like, is promoted to promote the eutecticization of impurities, and the generated intermetallic compound is separated to remove the impurities.
  • the present invention does not require a step of mixing unnecessary impurities in order to generate an intermetallic compound as conventionally performed, and can improve the yield.
  • the impurity element can be reduced below the allowable value of the JIS-A5000 impurity concentration used as the wrought material.
  • the impurity removal method includes (1) Fe, (2) Si, (3) Mn, Co, Ti, V, Zr, Cr, or a combination thereof as impurities contained in the molten Al or Al alloy. Impurities of all combinations of Fe, Si, Mn, Co, Ti, V, Zr, and Cr listed in the above (1) to (3) are to be removed by the impurity removal method. In the impurity removal method, an intermetallic compound containing these impurities is formed by containing Mg at a high concentration.
  • Fe The element which is most easily mixed and difficult to remove as an impurity element in the molten Al or Al alloy is Fe. Fe is easily mixed from fastening parts and shredder machines. However, since Al is an element that is easily oxidized, an oxidation refining process such as a converter in the steel industry cannot be applied, and it is difficult to remove Fe. In the impurity removal method, Fe can be efficiently removed from the Al or Al alloy molten metal. Therefore, Fe can be reduced below the specified concentration of A5000 series (Al—Mg series alloy) defined by JIS, and horizontal recycling from the stretched material to the stretched material can be facilitated.
  • A5000 series Al—Mg series alloy
  • Si As an impurity element in the molten Al or Al alloy, Si is an element which is likely to be mixed next to Fe and difficult to remove. Si may be a mixture of castings and die-cast products in scrap and a mixture of silica sand containing SiO 2 as a main component.
  • an intermetallic compound containing Si and Mg is formed in the impurity removal method. Therefore, in the impurity removal method, Si can be efficiently removed from the Al or Al alloy molten metal.
  • the impurity removal method also applies to Mn, Co, Ti, V, Zr, Cr or a combination thereof.
  • an intermetallic compound containing Al and Mn, Co, Ti, V, Zr, Cr or a combination thereof is formed. Therefore, in the impurity removal method, the impurity element containing Mn, Co, Ti, V, Zr, Cr, or a combination thereof can be efficiently removed from the Al or Al alloy molten metal.
  • Mn, Ti, V, Zr, and Cr are mixed as an additive element of the Al alloy, an element contained in the crystal grain refining material, metal, or the like.
  • Co is an element contained in the battery and may be mixed from scrap in the future.
  • impurities that can be removed by the impurity removal method various combinations can be selected from Fe, Si, Mn, Co, Ti, V, Zr, and Cr listed in the above (1) to (3). Impurities can be efficiently removed by forming and removing these combinations of intermetallic compounds.
  • Si is included in the intermetallic compound
  • Mg is also included in the intermetallic compound.
  • intermetallic compounds to be removed include intermetallic compounds of Al, Fe, Mn, Co and Cr, intermetallic compounds of Mg and Si, and intermetallic compounds of Al, Ti, V and Zr.
  • Al 13 Fe 4 , Mg 2 Si, Al 6 Mn, Al 9 Co 2 , Al 3 Ti, Al 10 V, Al 3 V, Al 3 Zr and the like can be mentioned.
  • Al 13 Fe 4 , Mg 2 Si, Al 6 Mn, Al 9 Co 2 , Al 3 Ti, Al 10 V, Al 3 V, Al 3 Zr, etc. are Fe, Si, Mn, Co, Ti, V, Zr And other metals of Cr may be included as a trace component.
  • Mg which is an essential element such as a JIS-A5000 series Al alloy
  • Al or Al alloy molten metal contains Mg at a high concentration
  • the formation of an intermetallic compound of impurities in the Al—Mg based molten metal is promoted. Therefore, there is no need to mix unnecessary impurities to generate intermetallic compounds as was done in the past, and metal elements that are difficult to remove in the Al recycling process are efficiently removed from the Al-Mg melt. can do.
  • Mg is not an impurity, a step of removing Mg is unnecessary, and the molten metal can be diluted and used for an Al product.
  • intermetallic compound formation is promoted by the effects (a) and (b) above for the removal of Fe and the effects (a) and (c) for the removal of Si.
  • Other impurity elements can also be removed by any of the effects (a) to (c).
  • Mg or Mg alloy is added to Al or Al alloy molten metal containing impurities.
  • Mg alloy include JIS-MC5 and JIS-MDC2A.
  • the lower limit of the Mg concentration is 11% by mass, preferably 14% by mass, more preferably 17% by mass, and still more preferably 20% by mass or more based on the Al or Al alloy molten metal containing impurities. If the lower limit of the concentration is less than 11% by mass, the effects (a) to (c) described above cannot be sufficiently obtained, and the intermetallic compound may not be sufficiently produced.
  • the upper limit of the Mg concentration is not particularly limited, but when the Mg concentration increases, the amount of dilution increases and the cost increases. Therefore, 50% of the molten Al or Al alloy containing impurities from the economical viewpoint. % By mass is preferable, 40% by mass is more preferable, 30% by mass is further preferable, and 25% by mass is particularly preferable.
  • the molten metal after the adding step is held in a temperature range of 470 ° C. or higher and 650 ° C. or lower for 5 minutes or more, thereby promoting the generation of an intermetallic compound containing an impurity element.
  • the lower limit of the holding temperature is 470 ° C., preferably the higher of 470 ° C. and the liquidus temperature ⁇ 20 ° C., more preferably the higher of 470 ° C. and the liquidus temperature ⁇ 10 ° C. It is. This is because when the holding temperature is lower than 470 ° C., the fluidity of the molten metal is lowered and it is difficult to stably hold the molten metal.
  • the holding temperature is preferably the higher of 470 ° C.
  • the liquidus temperature ⁇ 20 ° C. more preferably the higher of 470 ° C. and the liquidus temperature ⁇ 10 ° C. Since the temperature is used as a reference, the production amount of solid Al can be kept low, and the intermetallic compound can be efficiently separated without reducing the yield of the molten metal.
  • the upper limit of the holding temperature is 650 ° C, preferably 630 ° C, and more preferably 600 ° C. This is because when the holding temperature exceeds 650 ° C., an intermetallic compound is not generated, and as a result, it may be difficult to reduce the impurity concentration.
  • the lower limit of the holding time is preferably 5 minutes, more preferably 10 minutes, and even more preferably 20 minutes for coarse growth of the compound.
  • the upper limit of the holding time is not particularly limited, but 150 minutes is preferable for efficient processing.
  • the molten metal is cooled to a temperature at which only the intermetallic compound is crystallized after the holding step.
  • the intermetallic compound in the molten metal can be crystallized by the cooling step.
  • the cooling means the entire molten metal may be cooled, or a cooling pipe to which a cooling medium is supplied may be inserted into the molten metal to locally lower the temperature of the molten metal.
  • the cooling medium is not particularly limited, and water is an example.
  • the intermetallic compound separation step the intermetallic compound produced in the holding step is separated from the molten metal.
  • the separating means include filtration with a heat-resistant filter, standing of the molten metal, and centrifugal separation of the molten metal.
  • the molten metal contains Fe as an impurity and the intermetallic compound is Al 13 Fe 4 which is an Al—Fe-based intermetallic compound, since Al 13 Fe 4 is paramagnetic, it is adsorbed and fixed by a magnet. You can also. By these methods, Al 13 Fe 4 can be efficiently removed out of the system from the Al—Mg melt.
  • a refractory filter refers to a filter made of a chemically stable oxide that can withstand high temperatures. Examples of the oxide include magnesia, alumina, silica, mullite, zirconia, and the like. Examples of the refractory filter include a ceramic foam filter and a tube filter, and a molten metal filtration device including the refractory filter can be used.
  • an intermetallic compound can be efficiently removed by collecting an intermetallic compound having a large specific gravity from the molten metal using a centrifuge. After centrifugation, only the molten metal with a low impurity concentration is recovered.
  • an inert gas containing N 2 gas, Ar gas or He gas, chlorine gas, flux, or a combination thereof is introduced into the molten metal, and the intermetallic compound is introduced into the bubbles, flux or It can also be removed by floating and separating after adsorbing to these combinations.
  • the intermetallic compound is floated and separated, and the intermetallic compound is scraped and removed using a jig or the like, so that only the molten metal having a low impurity concentration can be efficiently recovered.
  • the flux for example, a mixture of two or more of NaCl, KCl, and MgCl 2 can be used.
  • the molten metal with a high concentration of Mg after the removal of the intermetallic compound is pure aluminum melted in advance or aluminum with a low Mg concentration. It can be used after being mixed with scrap (for example, 1000 series) and diluted to the Mg reference concentration of A5000 series (Al-Mg series alloy) defined by JIS.
  • the dilution step is a step of diluting the molten metal after removal of the intermetallic compound containing a high concentration of Mg so that the Mg concentration is equal to or lower than the standard concentration of the JIS-A5000 system.
  • Mg is not an impurity
  • the process of removing is unnecessary, and the molten metal can be diluted and used for Al products.
  • Mg having a high vapor pressure can be evaporated, and an Al—Mg based molten metal having a low Mg concentration can be obtained.
  • the molten metal after removal of the intermetallic compound containing high concentration of Mg can be used as an Mg intermediate alloy by solidifying with a mold or the like.
  • the impurity removal method can efficiently remove impurities that are mixed in Al or Al alloy and are difficult to remove from the molten metal. Impurities are removed by isolating the produced intermetallic compounds by containing Mg, which is an essential element in a JIS-A5000 series Al alloy or the like in a high concentration to promote compounding of impurities.
  • the present invention does not require a step of mixing unnecessary impurities in order to generate an intermetallic compound as conventionally performed, and can improve the yield.
  • metal elements that are difficult to remove in the Al recycling process can be efficiently reduced below the allowable concentration of the wrought material, so horizontal recycling from the wrought material to the wrought material is possible. Can be realized.
  • Example 1 As shown in Table 1, 0.12 kg of molten Al—Fe alloy was melted at 700 ° C. so that the concentration of Fe was 1.00% by mass after addition of Mg. Next, after adding Mg so that the density
  • Example 2 to 16 The impurity removal treatment of Examples 2 to 16 was performed in the same manner as in Example 1 except that the Mg concentration, holding temperature, and holding time were changed as shown in Table 1. Next, the molten alloy after the impurity removal treatment was collected, and the concentration of the impurity element after the impurity removal treatment was measured by ICP emission spectroscopy.
  • Example 17 After melting the Al—Fe—Si alloy at 700 ° C., Mg is added, and finally 1.5 kg of Al alloy containing 30% by mass of Mg, 1.00% by mass of Fe and 1.00% by mass of Si is prepared. did. Next, the temperature of the molten metal was lowered to 550 ° C. and held for 6 minutes. Next, the molten metal was filtered while pressurizing with an inert gas using a refractory filter. After the molten metal solidified, the ingot after filtration was cut, and the Fe and Si concentrations were analyzed by ICP emission spectrometry.
  • Example 7 in which a molten metal containing an Al—Fe—Si alloy and having an Mg concentration of 11% by mass or more was held in a temperature range of 470 ° C. or more and 650 ° C. or less and the separation step was performed using a heat resistant filter is as follows. , Fe and Si were sufficiently removed.
  • Examples 1 to 17 show that an excellent removal effect can be obtained for all impurities of Fe, Si, Mn, Co, Ti, V, and Cr having different solubility with respect to the Al molten metal. It was. Moreover, since Zr is an element in the same group as Ti, it can be estimated that an excellent removal effect can be obtained for Zr by the impurity removal method of the present invention.
  • the impurity removal method of the present invention can efficiently remove impurities that are mixed in Al or Al alloy and are difficult to remove from the molten metal.
  • the present invention does not require a step of mixing unnecessary impurities to generate an intermetallic compound as conventionally performed, and can improve the yield.
  • the impurity removal method of the present invention can efficiently reduce metal elements that are difficult to remove in the Al recycling process to below the allowable concentration of the wrought material, so horizontal recycling from Al wrought material to wrought material is possible. Can be realized.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Un procédé d'élimination d'impuretés d'un mode de réalisation comprend : une étape consistant à ajouter du Mg ou un alliage de Mg à de l'Al ou à un alliage d'Al fondu contenant des impuretés ; une étape de maintien de la masse fondue après ladite étape d'addition dans une plage de températures de 470 à 650 °C ; et une étape de séparation d'un composé intermétallique généré dans ladite étape de maintien à partir de la masse fondue. La concentration en Mg dans l'étape d'addition est d'au moins 11 % en masse par rapport à la masse fondue.
PCT/JP2019/012518 2018-04-09 2019-03-25 Procédé d'élimination d'impuretés WO2019198476A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2018-074779 2018-04-09
JP2018074779 2018-04-09
JP2019042157A JP7123834B2 (ja) 2018-04-09 2019-03-08 不純物除去方法
JP2019-042157 2019-03-08

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WO2019198476A1 true WO2019198476A1 (fr) 2019-10-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110904340A (zh) * 2019-12-10 2020-03-24 武翠莲 一种离心去除含铁混合物中有害元素和杂质的方法
WO2023079851A1 (fr) * 2021-11-04 2023-05-11 株式会社神戸製鋼所 Procédé d'élimination d'impuretés, procédé de production d'un alliage à base d'aluminium et procédé de production d'un matériau d'alliage à base d'aluminium

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01279712A (ja) * 1988-05-02 1989-11-10 Kobe Steel Ltd アルミニウム合金の不純物除去法
JPH0754070A (ja) * 1993-08-18 1995-02-28 Nippon Light Metal Co Ltd アルミニウムスクラップの精製方法
JPH07207361A (ja) * 1994-01-17 1995-08-08 Kobe Steel Ltd ＡｌまたはＡｌ合金溶湯の精製方法
JPH09111359A (ja) * 1995-05-31 1997-04-28 Hoogovens Alum Bv アルミニウムスクラツプ材料の溶融物を精製する方法およびこの精製溶融物から得られるアルミニウム合金
JPH09235632A (ja) * 1996-02-29 1997-09-09 Kobe Steel Ltd Ｍｎ含有Ａｌ溶湯からＭｎを除去する方法
JPH11229055A (ja) * 1998-02-17 1999-08-24 Kobe Steel Ltd アルミニウム或いはアルミニウム合金の純化方法
JP2000239757A (ja) * 1998-12-25 2000-09-05 Kobe Steel Ltd アルミニウム合金溶湯の精錬方法およびアルミニウム合金溶湯精錬用フラックス

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01279712A (ja) * 1988-05-02 1989-11-10 Kobe Steel Ltd アルミニウム合金の不純物除去法
JPH0754070A (ja) * 1993-08-18 1995-02-28 Nippon Light Metal Co Ltd アルミニウムスクラップの精製方法
JPH07207361A (ja) * 1994-01-17 1995-08-08 Kobe Steel Ltd ＡｌまたはＡｌ合金溶湯の精製方法
JPH09111359A (ja) * 1995-05-31 1997-04-28 Hoogovens Alum Bv アルミニウムスクラツプ材料の溶融物を精製する方法およびこの精製溶融物から得られるアルミニウム合金
JPH09235632A (ja) * 1996-02-29 1997-09-09 Kobe Steel Ltd Ｍｎ含有Ａｌ溶湯からＭｎを除去する方法
JPH11229055A (ja) * 1998-02-17 1999-08-24 Kobe Steel Ltd アルミニウム或いはアルミニウム合金の純化方法
JP2000239757A (ja) * 1998-12-25 2000-09-05 Kobe Steel Ltd アルミニウム合金溶湯の精錬方法およびアルミニウム合金溶湯精錬用フラックス

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110904340A (zh) * 2019-12-10 2020-03-24 武翠莲 一种离心去除含铁混合物中有害元素和杂质的方法
WO2023079851A1 (fr) * 2021-11-04 2023-05-11 株式会社神戸製鋼所 Procédé d'élimination d'impuretés, procédé de production d'un alliage à base d'aluminium et procédé de production d'un matériau d'alliage à base d'aluminium

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