WO2000018974A1 - Decapant pour aluminium et alliage d'aluminium fondus - Google Patents

Decapant pour aluminium et alliage d'aluminium fondus Download PDF

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Publication number
WO2000018974A1
WO2000018974A1 PCT/JP1998/004403 JP9804403W WO0018974A1 WO 2000018974 A1 WO2000018974 A1 WO 2000018974A1 JP 9804403 W JP9804403 W JP 9804403W WO 0018974 A1 WO0018974 A1 WO 0018974A1
Authority
WO
WIPO (PCT)
Prior art keywords
flux
vegetable
aluminum
aluminum alloy
residue
Prior art date
Application number
PCT/JP1998/004403
Other languages
English (en)
Japanese (ja)
Inventor
Masaru Takashima
Tadashi Mantani
Tadao Meguro
Original Assignee
Foun Tec Co., Ltd.
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
Application filed by Foun Tec Co., Ltd. filed Critical Foun Tec Co., Ltd.
Priority to PCT/JP1998/004403 priority Critical patent/WO2000018974A1/fr
Priority to AU92801/98A priority patent/AU9280198A/en
Publication of WO2000018974A1 publication Critical patent/WO2000018974A1/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
    • 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
    • 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
    • C22B21/062—Obtaining aluminium refining using salt or fluxing agents

Definitions

  • the present invention provides a flux using a naturally-occurring vegetable organic substance as a raw material in place of a chloride / fluoride industrial chemical which is considered to cause environmental pollution, with respect to a flux used for treating molten aluminum and aluminum alloys. And help the environment. Background art
  • Japanese Patent Application Laid-Open No. 11-23035 discloses a composition of a halide and a metal sulfate and a metal nitrate
  • Japanese Patent Application Laid-Open No. 2-38559 discloses a composition containing only a halide.
  • Japanese Patent Application Laid-Open No. 7-207376 discloses compositions of metal sulfates, carbonates and nitrates.
  • a treatment method in which chlorine gas is directly blown into the molten metal instead of chlorides is also performed.
  • the present invention relates to a method for removing at least one of a plant organic substance and a carbide thereof having a water content not exceeding 15% by weight.
  • An object of the present invention is to provide a flux for aluminum and aluminum alloy melts containing 100% by weight.
  • At least one other optional component of the plant organic substance is an anti-caking agent, an antiseptic, a fungicide, an inorganic or organic fluoride, a metal carbonate, a sulfate, a nitrate, or an oxide. Things.
  • the vegetable organic substance is obtained by subjecting a vegetable residue produced as a by-product in the processing of a plant or a vegetable oil extraction residue to a deoiling / fat dehydrating treatment with alcohol.
  • a vegetable residue produced as a by-product in the processing of a plant or a vegetable oil extraction residue is particularly preferred.
  • the content of water contained in the vegetable organic substance is set not to exceed 15% by weight, which is preferable for controlling a rapid vaporization reaction due to excess water and gas absorption into the molten metal when used as a flux. Due to the limit.
  • the present invention is intended to replace halides such as chlorides and fluorides, which have been conventionally used as a main component, in a flux for molten aluminum and aluminum alloys with a part or all of plant organic substances from the viewpoint of environmental pollution measures. That is.
  • Vegetable organic substances use any part of the plant, as long as the content of water does not exceed 15% by weight. In order to collect as those meeting the above conditions, it is preferable to target plant residues or vegetable oil extraction residues by-produced in the processing.
  • the extraction residue of vegetable oil which is a form of vegetable residue, is preferably subjected to alcohol treatment in order to remove excess residual oil and water.
  • the vegetable organic substance is subjected to the molten metal treatment of aluminum and aluminum alloys, and then carbonized and then incinerated.
  • the carbonized vegetable organic substance previously carbonized is not wetted by the molten metal (has low wettability). It is useful for drying slag and improving separability from molten metal.
  • the particle size of the botanical organic substance in the form of powder is not specified, but a practically preferable particle size range is 5 to 0.2 thighs. What is necessary is just to be in this range.
  • the flux of the present invention contains 1 to 100% by weight of a plant organic substance. This range corresponds to the contamination state of the molten metal, the state of the slag, and the expected treatment effect during the molten metal treatment. It is to be able to select within.
  • the residue when the amount of the plant organic substance is less than 100% by weight is regarded as an optional ingredient, and the contents thereof are as described above.
  • the anti-caking agent, the antiseptic and the fungicide are the plant organic substance. It shall be used as necessary depending on the type of the material, and any type that is commonly used for that purpose may be used.
  • inorganic or organic fluorides, metal carbonates, sulfates, nitrates, and oxides are all commonly used as conventional combustion aids for conventional fluxes, such as heat-generating agents, reaction regulators, and the like. Are selectively used according to the necessity of the processing effect.
  • chloride which is a typical component of the conventional flux, is not adopted from the viewpoint that the present invention places importance on eliminating chlorine pollution including chlorine-based dioxins.
  • Drying was performed so as not to exceed 15% by weight, and sieving was performed so that the particle size was in the range of 5 to 0.2 mm.
  • melts were JIS ADC 12 (ASTM B 85 383.0), and the furnace used was a reverberatory furnace.
  • the slag and the molten metal are sufficiently stirred and dispersed to entangle with the slag while undergoing incineration from the carbonization stage to separate the slag and the molten metal from the molten metal in a dry state. Promoted.
  • the present invention can be used as a flux for the treatment of molten aluminum and aluminum alloy (removal of slag, non-metallic inclusions, and hydrogen accompanying them).

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

Abstract

La présente invention concerne un décapant pour aluminium et alliage d'aluminium fondus qui renferme 1 % en poids d'au moins une composante pris parmi des matières organiques végétales particulaires et de leurs carbures, ces particules ayant une teneur en eau d'au moins 15 % en poids. Le décapant peut contenir, en plus de la matière organique d'origine végétale, au moins un composant choisi parmi des agents anti-consolidation, des conservateurs, des agents anti-moisissures, des fluorures inorganiques et organiques, des carbonates, des sulfates, des nitrates et des oxydes métalliques. La matière organique végétale est obtenue de préférence par dégraissage à l'alcool et déshydratation de résidus végétaux (sous-produits du traitement de plantes ou résidus d'extraction d'huiles végétales). Parmi les résidus, une préférence particulière est accordée aux résidus d'extraction provenant de la balle de sarrasin, d'écales de noix, de balle de riz carbonisée, de déchets de soja, de son de riz, d'huiles de coton et d'huiles de sésame. On veillera à ce que la teneur en eau de la matière organique végétale ne dépasse pas 15 % en poids afin d'éviter une vaporisation rapide due à un excès d'eau au moment où l'on utilise le décapant ainsi qu'une absorption du gaz dans le métal fondu.
PCT/JP1998/004403 1998-09-30 1998-09-30 Decapant pour aluminium et alliage d'aluminium fondus WO2000018974A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP1998/004403 WO2000018974A1 (fr) 1998-09-30 1998-09-30 Decapant pour aluminium et alliage d'aluminium fondus
AU92801/98A AU9280198A (en) 1998-09-30 1998-09-30 Flux for molten aluminum and aluminum alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/004403 WO2000018974A1 (fr) 1998-09-30 1998-09-30 Decapant pour aluminium et alliage d'aluminium fondus

Publications (1)

Publication Number Publication Date
WO2000018974A1 true WO2000018974A1 (fr) 2000-04-06

Family

ID=14209118

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/004403 WO2000018974A1 (fr) 1998-09-30 1998-09-30 Decapant pour aluminium et alliage d'aluminium fondus

Country Status (2)

Country Link
AU (1) AU9280198A (fr)
WO (1) WO2000018974A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009299132A (ja) * 2008-06-13 2009-12-24 Fauntekku:Kk アルミニウム又はアルミニウム合金の精錬用非ハロゲンフラックス

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02270924A (ja) * 1989-04-13 1990-11-06 Kobe Steel Ltd アルミニウムおよびアルミニウム合金溶湯の精錬法
JPH07207360A (ja) * 1994-01-17 1995-08-08 Kobe Steel Ltd ＡｌまたはＡｌ合金溶湯の精錬法
JPH07207358A (ja) * 1994-01-17 1995-08-08 Kobe Steel Ltd ＡｌまたはＡｌ合金溶湯精錬用フラックス

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02270924A (ja) * 1989-04-13 1990-11-06 Kobe Steel Ltd アルミニウムおよびアルミニウム合金溶湯の精錬法
JPH07207360A (ja) * 1994-01-17 1995-08-08 Kobe Steel Ltd ＡｌまたはＡｌ合金溶湯の精錬法
JPH07207358A (ja) * 1994-01-17 1995-08-08 Kobe Steel Ltd ＡｌまたはＡｌ合金溶湯精錬用フラックス

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009299132A (ja) * 2008-06-13 2009-12-24 Fauntekku:Kk アルミニウム又はアルミニウム合金の精錬用非ハロゲンフラックス

Also Published As

Publication number Publication date
AU9280198A (en) 2000-04-17

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