US3831915A - Closure for crucibles used for aluminothermic reactions - Google Patents

Closure for crucibles used for aluminothermic reactions Download PDF

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Publication number
US3831915A
US3831915A US00362310A US36231073A US3831915A US 3831915 A US3831915 A US 3831915A US 00362310 A US00362310 A US 00362310A US 36231073 A US36231073 A US 36231073A US 3831915 A US3831915 A US 3831915A
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US
United States
Prior art keywords
closure
sealing material
aluminothermic reactions
crucibles used
tap pin
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 - Lifetime
Application number
US00362310A
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English (en)
Inventor
H Guntermann
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.)
Goldschmidt ETB GmbH
Original Assignee
Elektro Thermit GmbH
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 DE19722230430 external-priority patent/DE2230430C3/de
Application filed by Elektro Thermit GmbH filed Critical Elektro Thermit GmbH
Application granted granted Critical
Publication of US3831915A publication Critical patent/US3831915A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F27D3/1509—Tapping equipment
    • F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
    • F16J15/20—Packing materials therefor
    • 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
    • F27D3/1509—Tapping equipment

Definitions

  • This invention relates to an improvement in a closure for crucibles used for aluminothermic reactions com- [52] US. Cl 266/34 R, 266/38, 75/27 prising a tap pin, a Sealing material, and refractory [51] Int. Cl. C2lc 7/00 Sand, the i rovement comprising a sealing material [58] Field of Search 266/38, 34 R; 164/53, 54, of inorganic fibers covering the tap pin 164/80, 123; 75/23, 27; 222/DIG. l9, DIG. 20
  • the present invention relates to a closure for crucibles used for aluminothermic reactions, composed of a nail-like tap pin, a sealing compound, and highly re fractory sand.
  • crucibles composed of a sheet metal jacket, a refractory lining inserted into this jacket, and an exchangeable discharge nozzle which must be closed anew prior to each filling of the crucible.
  • Serving as closure means are a nail-like tap pin, a sealing material, and refractory sand, for example corundum sand.
  • the sealing material is asbestos which, when received, is prepared in the form of small plates, and the required number of the small plates, which latter are pulverized or ground to asbestos wool, prior to being used, is determined by the size of the cru proficient.
  • the tap pin is suspended in, or placed into, the opening of the discharge nozzle; the head of the pin closing the opening of the nozzle is sealed with the pulverized asbestos wool, and the asbestos seal is covered with a layer of refractory sand.
  • FIG. 1 illustrates a fleece plate 1 prepared from inorganic fibers
  • FIG. 2 illustrates the inventive closure means of a crucible used for aluminothermic reactions.
  • the reaction crucible is composed of a refractory for example magnesite lining 4 which is inserted into a sheet metal sleeve 2 with an intermediate layer of sand 3. Inserted into the lower part of the crucible is an outlet nozzle 5 which must be closed anew prior to each filling or charge.
  • a tap pin 6 is suspended into the opening of the discharge nozzle 5; the head of the tap pin 6 is covered with the inventive fleece platelet of inorganic fibers, and the fleece platelet 1 is subsequently covered with a layer of refractory sand 7, for example corundum.
  • inorganic fibers composed of approximately 43 to 52 percent by weight of Al O 46 to 54 percent by weight of SiO 0.06 to 1.0 percent by weight of B 0 and 0.1 to 2.0 percent by weight of one or more alkalies, such as Na O, for example.
  • Such products are obtainable, for instance, under the trade names of Fiberfrax" or Kaowoolf
  • the product may be prepared by melting a mixture of, inter alia, aluminum oxide, silicon dioxide, and small amounts of boric acid at about l,650C, and blowing the discharging melt apart by a strong air blast.
  • a closure for crucibles used for aluminothermic reactions comprising a tap pin, a sealing material, and refractory sand, the improvement comprising a sealing material of fibers composed of A1 0 SiO B 0 and alkali.
  • a closure for crucibles used for aluminothermic reactions comprising a tap pin, a sealing material, and refractory sand, the improvement comprising a sealing material of fibers of SiO

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Material Composition (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US00362310A 1972-06-22 1973-05-21 Closure for crucibles used for aluminothermic reactions Expired - Lifetime US3831915A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722230430 DE2230430C3 (de) 1972-06-22 Verschluß für bei der aluminothermischen Reaktion verwendete Tiegel

Publications (1)

Publication Number Publication Date
US3831915A true US3831915A (en) 1974-08-27

Family

ID=5848409

Family Applications (1)

Application Number Title Priority Date Filing Date
US00362310A Expired - Lifetime US3831915A (en) 1972-06-22 1973-05-21 Closure for crucibles used for aluminothermic reactions

Country Status (9)

Country Link
US (1) US3831915A (nl)
AR (1) AR195717A1 (nl)
AT (1) AT327643B (nl)
BR (1) BR7304400D0 (nl)
CH (1) CH575108A5 (nl)
GB (1) GB1392894A (nl)
IT (1) IT985446B (nl)
NL (1) NL157527B (nl)
ZA (1) ZA733318B (nl)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063720A (en) * 1973-03-23 1977-12-20 Camille Boutet Automatic unplugging aluminothermic welding crucible
US4149704A (en) * 1973-06-20 1979-04-17 Acieries De Gennevilliers Anciens Establissements C. Delachaux Self-opening closure for the discharge aperture of a crucible
US4522322A (en) * 1982-03-31 1985-06-11 Elektro-Thermit Gmbh Self-opening closure for a casting crucible used in aluminothermic reactions
US6120726A (en) * 1997-10-31 2000-09-19 Elektro-Thermit Gmbh Automatic tapping thimble
EP1472037A2 (en) * 2002-01-25 2004-11-03 Erico International Corporation Welding apparatus and method
WO2012149993A1 (de) * 2011-05-02 2012-11-08 Elektro-Thermit Gmbh & Co. Kg Reaktionstiegel für aluminothermische schweissungen mit einem feuerfesten sperrkörper

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2024132A (en) * 1933-07-06 1935-12-10 Firm Th Goldschmidt A G Process for introducing steel-forming additions into the aluminogenetic iron in aluminothermal welding

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2024132A (en) * 1933-07-06 1935-12-10 Firm Th Goldschmidt A G Process for introducing steel-forming additions into the aluminogenetic iron in aluminothermal welding

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Publication: Thermit Mill and Foundry Practice; pages 5 6. *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063720A (en) * 1973-03-23 1977-12-20 Camille Boutet Automatic unplugging aluminothermic welding crucible
US4149704A (en) * 1973-06-20 1979-04-17 Acieries De Gennevilliers Anciens Establissements C. Delachaux Self-opening closure for the discharge aperture of a crucible
US4522322A (en) * 1982-03-31 1985-06-11 Elektro-Thermit Gmbh Self-opening closure for a casting crucible used in aluminothermic reactions
US6120726A (en) * 1997-10-31 2000-09-19 Elektro-Thermit Gmbh Automatic tapping thimble
EP1472037A2 (en) * 2002-01-25 2004-11-03 Erico International Corporation Welding apparatus and method
EP1472037A4 (en) * 2002-01-25 2007-10-31 Erico Int Corp APPARATUS AND METHOD FOR WELDING
WO2012149993A1 (de) * 2011-05-02 2012-11-08 Elektro-Thermit Gmbh & Co. Kg Reaktionstiegel für aluminothermische schweissungen mit einem feuerfesten sperrkörper

Also Published As

Publication number Publication date
NL7306788A (nl) 1973-12-27
NL157527B (nl) 1978-08-15
AT327643B (de) 1976-02-10
GB1392894A (en) 1975-05-07
AR195717A1 (es) 1973-10-31
BR7304400D0 (pt) 1974-08-15
DE2230430B2 (de) 1977-04-14
CH575108A5 (nl) 1976-04-30
ATA513773A (de) 1975-04-15
IT985446B (it) 1974-11-30
DE2230430A1 (de) 1974-01-10
ZA733318B (en) 1974-04-24
AU5615373A (en) 1974-11-28

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