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WO1997018339A2 - Dispositif de filtration pour metal fondu - Google Patents

Dispositif de filtration pour metal fondu Download PDF

Info

Publication number
WO1997018339A2
WO1997018339A2 PCT/GB1996/002779 GB9602779W WO9718339A2 WO 1997018339 A2 WO1997018339 A2 WO 1997018339A2 GB 9602779 W GB9602779 W GB 9602779W WO 9718339 A2 WO9718339 A2 WO 9718339A2
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filtration device
molten metal
outlet
film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/GB1996/002779
Other languages
English (en)
Other versions
WO1997018339A3 (fr
Inventor
Philip Graham Enright
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
N-TEC Ltd
Original Assignee
N-TEC 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 N-TEC Ltd filed Critical N-TEC Ltd
Priority to AU75793/96A priority Critical patent/AU7579396A/en
Priority to CA002237320A priority patent/CA2237320C/fr
Publication of WO1997018339A2 publication Critical patent/WO1997018339A2/fr
Publication of WO1997018339A3 publication Critical patent/WO1997018339A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2068—Other inorganic materials, e.g. ceramics
    • B01D39/2082—Other inorganic materials, e.g. ceramics the material being filamentary or fibrous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/001—Retaining slag during pouring molten metal
    • B22D43/004—Retaining slag during pouring molten metal by using filtering means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to a filtration device comprising a sample holder and filter for
  • the invention relates to filtration devices to enable
  • the filtration process allows the molten metal to pass through the device
  • An object of the invention is therefore to avoid or at least mitigate these problems ol
  • one aspect of the invention provides a filtration device, or
  • crucible for filte ⁇ ng molten metal compnsmg a body defining a cavity for receiving
  • the fibrous matenal can be a ceramic such as alummo-sihcate fibres
  • the filtration unit can be more compact and handled more easily and conveniently.
  • the body comprises an air impermeable layer
  • This mask or coating should be thick enough to
  • the coating is preferably
  • Another aspect of the invention is to use the thermally insulating and non-electrically
  • a further aspect of the invention provides a filter comprising, for example, alumina
  • the surfaces of the filter which contact the filtration material in use are
  • Such a filter is preferably included in a container
  • a filtration device comprising a crucible and a filter according to the other
  • a yet further aspect of the invention provides a method of making a filtration device
  • Figure 1 is a schematic plan view from above of a filtration device according
  • Figure 2 is a schematic, cross-sectional, side elevation view of the device
  • Figure 3 is a plan view from below of the device shown in figures 1 and 2;
  • Figure 4 is a cross-sectional view of the lower end of the device shown in
  • a filtration device 10 according to the invention is shown in drawings 1 to 4
  • crucible 12 having an open upper end and a lower end 14 containing a
  • the inner surface of lower region 14 comprises a
  • a recess region comprising an annular ledge 20 on which a filter 22 can be placed
  • Filter 22 can be held in position in aperture 16 using a refractory
  • the inner edges of the filter are sealed to prevent flow of molten metal
  • a film 30 is applied to the inner surface of crucible 12. The film
  • Prefened materials contain mica or kaolin and one such material is micawash
  • the film 30 enables the active area of filtration of surface 24
  • a lowermost film 32 is used to mask the lower region 14 of crucible 12
  • This film should be continuous and extend at least across the base and
  • the film 32 can extend over the lower radius of the crucible to a
  • film 32 is made of diluted Fraxbond.
  • the crucible is made of a fibroOus refractory material such as alumino ⁇
  • a prefened material is procal available from Foseco since it is inert to molten
  • aluminium and iron has a very low thermal conductivity and low heat capacity.
  • Such material provides a crucible which is readily manually handleable (albeit
  • the alumino-silicate fibres are preferably
  • the crucible is then dipped to impregnate it with a rigidizer such as
  • the filter comprises alumina granules, or girconia granules, bonded
  • filter surfaces 24 and 26 are unfinished and not ground since this is found to enhance
  • crucible is beneficial not least since one or more of the materials is inert with respect
  • metals consisting mainly of these elements can be filtered using the present devices.
  • the average pore size in the filter is between 50 and 200 micrometres ( ⁇ m)
  • the device in use can be inserted into a
  • filtration system FS comprising upper lid L, base B and gaskets G positioned against the upper and lower ends of crucible 12.
  • the gaskets can be attached to the crucible
  • lowermost gasket G can be
  • a solidified sample within a crucible 12 can be heated to a desired temperature
  • fluid commumcation to a compressor can be provided via an
  • mlet I acts as a vent to equalise pressure above the molten metal M within the crucible
  • crucible from Foseco i.e. a crucible consisting pnncipally of alumino silicate fibre and
  • Region 28 of cement should fill the gap between the filter
  • Lower film 32 can be left to dry, for example for 2 hours at ambient temperature.
  • Lower film 32 can be left to dry, for example for 2 hours at ambient temperature.
  • invention includes a method of forming a filtration device compnsing any one of the

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

La présente invention concerne un appareil de filtration destiné à filtrer le métal en fusion. Ce dispositif est constitué d'un corps définissant une cavité de réception du métal en fusion, d'un orifice de sortie pour le métal en fusion provenant du corps, et d'un dispositif de retenue de filtre entre la cavité et l'orifice. La fonction du filtre est de concentrer dans la cavité les inclusions se trouvant dans le métal. Le corps est caractérisé en ce qu'il comporte un matériau réfractaire fibreux. L'utilisation d'un tel appareil de filtration permet de faire fondre rapidement dans le dispositif un échantillon de métal solide pour constituer un échantillon représentatif du métal liquide qui peut alors être filtré.
PCT/GB1996/002779 1995-11-11 1996-11-11 Dispositif de filtration pour metal fondu Ceased WO1997018339A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU75793/96A AU7579396A (en) 1995-11-11 1996-11-11 Filtration device for filtering molten metal
CA002237320A CA2237320C (fr) 1995-11-11 1996-11-11 Dispositif de filtration pour metal fondu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9523124.7A GB9523124D0 (en) 1995-11-11 1995-11-11 Filtration device
GB9523124.7 1995-11-11

Publications (2)

Publication Number Publication Date
WO1997018339A2 true WO1997018339A2 (fr) 1997-05-22
WO1997018339A3 WO1997018339A3 (fr) 1997-07-03

Family

ID=10783750

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/002779 Ceased WO1997018339A2 (fr) 1995-11-11 1996-11-11 Dispositif de filtration pour metal fondu

Country Status (3)

Country Link
AU (1) AU7579396A (fr)
GB (2) GB9523124D0 (fr)
WO (1) WO1997018339A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5827982A (en) * 1997-02-24 1998-10-27 Alcan International Limited Portable liquid metal filtration device for inclusion analysis
JP2011020918A (ja) * 2009-07-15 2011-02-03 Schott Ag 溶融物を連続的に溶融又は精製する方法及び装置
CN103170586A (zh) * 2013-03-28 2013-06-26 无锡海特铝业有限公司 直接烘烤式铝液过滤箱

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE411519T1 (de) 2003-05-06 2008-10-15 Alcan Int Ltd Vorrichtung und verfahren zum messen von metalleinschlüssen
GB2544330B (en) * 2015-11-13 2018-07-04 Cat International Ltd Apparatus for filtering molten metal and method of manufacturing the same
CN110108125B (zh) * 2019-06-06 2023-11-28 烟台华正科信实业有限公司 一种用于加工硅酸盐熔体的熔融炉

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1152505A (en) * 1967-06-23 1969-05-21 Dow Chemical Co Filter Apparatus
BE754558A (fr) * 1969-08-08 1971-02-08 Alcan Res & Dev Procede et appareil de filtrage de metaux en fusion
GB1311508A (en) * 1970-05-19 1973-03-28 Foseco Int Crucibles for use in metal casting
US4124506A (en) * 1977-09-22 1978-11-07 Swiss Aluminium Ltd. Method for the filtration of molten metal in a crucible type furnace
GB2030597B (en) * 1978-08-23 1982-11-17 Alcan Res & Dev Filtering aluminium
US4366721A (en) * 1981-02-10 1983-01-04 Union Carbide Corporation Molten metal sampling device
US4504392A (en) * 1981-04-23 1985-03-12 Groteke Daniel E Apparatus for filtration of molten metal
US4395333A (en) * 1982-04-14 1983-07-26 Groteke Daniel E Pre-wet and reinforced molten metal filter
US4564175A (en) * 1982-07-14 1986-01-14 Metcast Associates, Inc. Molten metal transfer crucible with external filter
US4444377A (en) * 1982-07-14 1984-04-24 Daniel E. Groteke Molten metal transfer crucible
DE3340417A1 (de) * 1983-11-09 1985-05-15 Gebrüder Lüngen GmbH & Co KG, 4006 Erkrath Filterelement zum filtrieren von metallschmelzen
GB8916839D0 (en) * 1989-07-22 1989-09-06 Foseco Int Filters
DE9014187U1 (de) * 1990-10-12 1991-01-03 Kirchmeier, Hans, 5067 Kürten Filter für Flüssigmetalle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5827982A (en) * 1997-02-24 1998-10-27 Alcan International Limited Portable liquid metal filtration device for inclusion analysis
JP2011020918A (ja) * 2009-07-15 2011-02-03 Schott Ag 溶融物を連続的に溶融又は精製する方法及び装置
CN103170586A (zh) * 2013-03-28 2013-06-26 无锡海特铝业有限公司 直接烘烤式铝液过滤箱

Also Published As

Publication number Publication date
GB9523124D0 (en) 1996-01-10
GB2306896A (en) 1997-05-14
AU7579396A (en) 1997-06-05
GB9623382D0 (en) 1997-01-08
WO1997018339A3 (fr) 1997-07-03
GB2306896B (en) 1999-08-18

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