GB829777A - Improvements in or relating to processes for refining liquid melts by degasification, and to apparatus for carrying such processes into effect - Google Patents

Improvements in or relating to processes for refining liquid melts by degasification, and to apparatus for carrying such processes into effect

Info

Publication number
GB829777A
GB829777A GB24454/56A GB2445456A GB829777A GB 829777 A GB829777 A GB 829777A GB 24454/56 A GB24454/56 A GB 24454/56A GB 2445456 A GB2445456 A GB 2445456A GB 829777 A GB829777 A GB 829777A
Authority
GB
United Kingdom
Prior art keywords
melt
chamber
vacuum
crucible
maintained
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.)
Expired
Application number
GB24454/56A
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.)
Georg Fischer AG
Original Assignee
Georg Fischer AG
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 Georg Fischer AG filed Critical Georg Fischer AG
Publication of GB829777A publication Critical patent/GB829777A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere

Landscapes

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

Abstract

829,777. Degassing metals. FISCHER A. G., G. Aug. 9, 1956 [Aug. 9, 1955], No. 24454/56. Class 72 [Also in Group XI] A process of refining liquid melts comprises introducing the melt into a chamber which. is separated from a second chamber, in which is maintained a vacuum or a gas at reduced pressure, by a wall at least a part of which is permeable to the gas but not to the liquid. As shown, applied to the refining of a metal, the molten metal is placed in a crucible 1 the lower portion 2 of which is of gas permeable material. A vacuum is maintained in a chamber 4 surrounding the crucible and the temperature is maintained by a resistance heater 7. The crucible may be in the form of a tube of gas permeable material and may be arranged in a chamber divided into smaller chambers in each of which a different vacuum may prevail, Fig. 3 (not shown). In a modification, Fig. 5, the apparatus is similar to Fig. 1 but the melt is in the outer chamber and the vacuum in the inner and a high voltage electrode 45 may be inserted into the vacuum chamber. The electrode may be an incandescent cathode maintained at such a high potential relative to the melt or crucible that gas emission from the melt is promoted. In a further modification Fig. 4 (not shown) the melt may form a short circuited induction ring. The melt may also be heated by passage of a current therethrough.
GB24454/56A 1955-08-09 1956-08-09 Improvements in or relating to processes for refining liquid melts by degasification, and to apparatus for carrying such processes into effect Expired GB829777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH829777X 1955-08-09

Publications (1)

Publication Number Publication Date
GB829777A true GB829777A (en) 1960-03-09

Family

ID=4540219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24454/56A Expired GB829777A (en) 1955-08-09 1956-08-09 Improvements in or relating to processes for refining liquid melts by degasification, and to apparatus for carrying such processes into effect

Country Status (1)

Country Link
GB (1) GB829777A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134929A (en) * 1982-12-22 1984-08-22 Honsel Werke Ag Degassing molten metal
EP0462537A1 (en) * 1990-06-16 1991-12-27 Masamichi Sano Vacuum-suction degassing apparatus
EP0462536A1 (en) * 1990-06-16 1991-12-27 Masamichi Sano Vacuum-suction degassing method and an apparatus therefor
US5324487A (en) * 1990-06-16 1994-06-28 Tokyo Yogyo Kabushiki Kaisha Vacuum-suction degassing apparatus
US5346185A (en) * 1990-06-16 1994-09-13 Tokyo Yogyo Kabushiki Kaisha Vacuum-suction degassing apparatus
US5415680A (en) * 1992-11-09 1995-05-16 Eckert; C. Edward Molten metal vacuum treatment and apparatus
WO2009066058A1 (en) * 2007-11-24 2009-05-28 Capital Refractories Limited Metallurgical treatment vessel etc

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134929A (en) * 1982-12-22 1984-08-22 Honsel Werke Ag Degassing molten metal
EP0462537A1 (en) * 1990-06-16 1991-12-27 Masamichi Sano Vacuum-suction degassing apparatus
EP0462536A1 (en) * 1990-06-16 1991-12-27 Masamichi Sano Vacuum-suction degassing method and an apparatus therefor
US5306472A (en) * 1990-06-16 1994-04-26 Tokyo Yogyo Kabushiki Kaisha Vacuum-suction degassing method and an apparatus therefor
US5324487A (en) * 1990-06-16 1994-06-28 Tokyo Yogyo Kabushiki Kaisha Vacuum-suction degassing apparatus
US5346185A (en) * 1990-06-16 1994-09-13 Tokyo Yogyo Kabushiki Kaisha Vacuum-suction degassing apparatus
US5415680A (en) * 1992-11-09 1995-05-16 Eckert; C. Edward Molten metal vacuum treatment and apparatus
WO2009066058A1 (en) * 2007-11-24 2009-05-28 Capital Refractories Limited Metallurgical treatment vessel etc

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