US3717034A - Apparatus for immersing and withdrawing bath examination means into and from a molten bath - Google Patents

Apparatus for immersing and withdrawing bath examination means into and from a molten bath Download PDF

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Publication number
US3717034A
US3717034A US00114856A US3717034DA US3717034A US 3717034 A US3717034 A US 3717034A US 00114856 A US00114856 A US 00114856A US 3717034D A US3717034D A US 3717034DA US 3717034 A US3717034 A US 3717034A
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US
United States
Prior art keywords
bath
jacket
probe
runway
examination
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
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US00114856A
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English (en)
Inventor
N Veselinovich
D Dukelow
M Orehoski
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United States Steel Corp
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Steel Corp
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Publication date
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Publication of US3717034A publication Critical patent/US3717034A/en
Assigned to USX CORPORATION, A CORP. OF DE reassignment USX CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: UNITED STATES STEEL CORPORATION (MERGED INTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/12—Dippers; Dredgers
    • G01N1/125—Dippers; Dredgers adapted for sampling molten metals
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4673—Measuring and sampling devices
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S73/00—Measuring and testing
    • Y10S73/09—Molten metal samplers

Definitions

  • This invention relates to apparatus for immersing bath examination means into a molten bath and withdrawing the bath examination means from the molten bath. More particularly, this invention relates to apparatus to obtain the liquidus arrest temperature, a sample, and other bath measurements in a steelmaking basic oxygen furnace.
  • The.conventional technique for obtaining a sample, measuring temperature or other bath sensor measurements requires that the oxygen lance be withdrawn from the furnace, the furnace rotated about 90 from the vertical and the measurements and the sampling performed manually. The furnace is then returned to its operating condition. This operation may require 3 minutes as a minimum. and may require as long as 7 minutes when the slag is highly reactive and foamy, such as on high carbon'heats. In addition, even after making an end point determination, it is not uncommon to re-blow as many as 50 percent of the heats because of incorrect carbon content or temperature at the end point.
  • Still another object is to provide apparatus for rapidly sampling and sensing bath conditions.
  • a still further object is to provide apparatus that simultaneously samples and senses bath conditions.
  • FIG. 2 is a fragmentary side view of the carriage of our apparatus with the probe extended beyond the cooledjacket.
  • FIG. 3 is a fragmentary side view of the lower part of the carriage with the probe withdrawn into the cooled jacket.
  • FIG. 4 is a sectional view of the carriage along line IV-IV of FIG. 2 and showing the relation of the carriage to the runway.
  • FIG. 5 is a partial plan view showing the slew drive.
  • reference numeral 2 represents the vessel of a basic oxygen furnace.
  • An oxygen lance 4 protrudes downward through an opening 6 in an exhaust hood 8 through the opening 10 of the vessel 2.
  • a bath of molten steel 12 is covered by a layer of molten slag 14. This is a conventional basic oxygen steelmaking furnace.
  • the apparatus of our invention includes a vertical runway 16 mounted generally parallel to oxygen lance 4 and above a second opening 18 in the exhaust hood 8.
  • a carriage 20 is adapted to move up and down on runway 16 by means of a conventional power driven drive mechanism shown as a cable 21 running over sheaves 22 and connected to carriage 20 and a floor mounted winch 23. Winch 23 could also be mounted on runway 16.
  • the carriage could also be moved by other means and could include a counterbalance to lift the carriage to maximum height in the event of failure of any part of the drive mechanism.
  • Attached to carriage 20 is a water-cooled jacket 24.
  • a source of recirculating cooling water 25 has a flexible connection 26 to supply cooling water to an inlet 27 on jacket 24. Inlet 27 connects to an outer cooling passageway 28 in jacket 24. At the bottom of jacket 24, passageway 28 connects to an inner cooling passageway 29 inside jacket 24.
  • Passageway 29 has an outlet 30 with a flexible connection 31 to return cooling water to source 25.
  • a long hollow probe 32 is mounted inside jacket 24. The upper end of probe 32 is connected to one end of a push rod 34. The other end of push rod 34 is connected to a piston 36 in a double acting air cylinder 38 attached to carriage 20.
  • Air lines 40 connect air cylinder 38 to an air source and controller 42. While an air cylinder is preferred for moving the probe in and out of the jacket, other drives, such as a hydraulic cylinder, a rack and pinion or a cable drive, could also be used.
  • Runway 16 is pivotally supported by a bracket 43 from a runway support column 44 shown in FIG. 5 and partially shown in FIG. 1.
  • a slew drive 46 pivots runway 16 about to cover an operating position A of FIG. 5, a service position B of FIG. 5 where the carriage is over a work platform 48 and a park position C in FIG. 5.
  • Bracket 43 and runway 16 are shown in FIG. 5 in both the operating and park position. Where space permits, the runway could be moved back and forth in, for example, a straight line path instead of pivoting around a support. It is not necessary that the runway be vertical as shown, but it should be directed towards the bath.
  • a bail 50 is attached to jacket 24.
  • the lower end of probe 32 has a socket 52 and electrical leads 54 leading from the socket 52 through the probe 32, out its upper end and then to a conventional recording and control apparatus 56.
  • the sensor 60 and the sampler 58 remain in the bath 12 for the time necessary to take temperature recordings on recorder 56, and collect a metal sample, typically to seconds. As soon as the sensings have been determined, he actuates air controller 42 to supply air to the lower part of cylinder 38, immediately withdrawing probe 32 back into jacket 24 thereby exposing the sensor and sampler to the protection and cooling effect of sleeve 24 This solidifies the sample rapidly enough that a liquidus arrest temperature is immediately available for a carbon content determination.
  • FIGS. 2 and 3 show another method of preventing slag entry, whereby an inert gas, such as nitrogen or argon, is introduced into the space 70 between jacket 24 and probe 32 through a line 66 from a source 68 with sufficient pressure so that, as it exhausts from the bottom of the probe passed cardboard tube 62, it prevents slag entry.
  • an inert gas such as nitrogen or argon
  • other gases such as air, could be used provided it would not provide a reaction to disturb the examinations being made or provide an undesirable reaction with the molten bath.
  • Slag entry can also be prevented by a cap placed over the end of the jacket and dislodged by probe movement out of the jacket.
  • the cap, as well as a substitute for the wooden plug could be made of aluminum, steel, a refractory, cardboard, paperboard or any other material that will not react unfavorably with the bath and slag, and be readily meltable or otherwise disposable.
  • Apparatus for immersing and withdrawing bath examination means into and from a molten metal bath comprising a molten metal bath, a runway, means mounted adjacent the bath for moving the runway between an operating position near the bath and a service position away from the bath, a cooled jacket mounted for movement on the runway, a probe mounted for movement inside the jacket, bath examination means mounted on one end of the probe, means for moving the probe and mounted bath examination means in and out of the end of the jacket next to the bath with the runway in the operating position, and means for moving the jacket between a first position away from the bath and a second position with said one end of the jacket just abo ve the surface of the bath whereby in said second position the bath examination means is placed in position to begin bath examination when said one end of the probe is moved out of the jacket and into the bath.
  • Apparatus according to claim 1 which includes a vessel holding the molten metal bath and a generally vertical runway support column beside said vessel and in which the means for moving the runway includes means attaching the runway to the support column in a position spaced apart from and generally parallel to said support column and means for pivoting said runway about said support and in which said means for moving said jacket includes a carriage mounted for movement on the runway and upon which the jacket is mounted and means attached to said carriage for raising and lowering said carriage.
  • the means for moving said probe includes a cylinder mounted in fixed relationship to said jacket, a double acting piston in said cylinder, a push rod connecting said piston and the other end of said probe, and means connected to said cylinder for admitting compressed air to said cylinder to move said probe within said jacket.
  • Apparatus according to claim 1 which includes a layer of molten slag covering said metal and means for preventing slag entry into the probe.
  • said means for preventing slag entry includes a plug mounted in the end of said jacket towards said bath and dislodged by movement of said probe out of said jacket.
  • said first hollow passageway with its end towards said bath connected to the end of the first hollow passageway towards said bath and the end of said second hollow passageway away from said bath connected to discharge said cooling fluid from said second hollow passageway.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Sampling And Sample Adjustment (AREA)
US00114856A 1971-02-12 1971-02-12 Apparatus for immersing and withdrawing bath examination means into and from a molten bath Expired - Lifetime US3717034A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11485671A 1971-02-12 1971-02-12

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Country Status (6)

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US (1) US3717034A (zh)
BE (1) BE779052A (zh)
DE (1) DE2206590A1 (zh)
FR (1) FR2126779A5 (zh)
GB (1) GB1333022A (zh)
IT (1) IT949078B (zh)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882726A (en) * 1972-08-07 1975-05-13 Voest Ag Water-cooled lance or probe destined to be inserted into metallurgical furnaces
US3896674A (en) * 1973-03-01 1975-07-29 United States Steel Corp Sensor probe control system
US3921452A (en) * 1972-06-16 1975-11-25 Est Aciers Fins Continuous temperature measuring system for metallurgical furnaces
US3946610A (en) * 1973-06-12 1976-03-30 Societe Des Aciers Fins De L'est Temperature measuring device for metallurgical furnaces
US3985031A (en) * 1975-08-07 1976-10-12 Kennecott Copper Corporation Method of and apparatus for sampling molten slag
DE2552270A1 (de) * 1975-11-21 1977-06-02 Kuenzer Gmbh Mess Pruef Und Re Vorrichtung zum selbsttaetigen messen und/oder probenehmen in metallschmelzen
US4141249A (en) * 1977-03-14 1979-02-27 Nippon Kokan Kabushiki Kaisha Sub-lance assembly for sampling and temperature-measuring of molten metal during refining
US4204431A (en) * 1977-12-29 1980-05-27 Creusot-Loire Enterprises Device for temperature measurement and sampling of a steel
US4239189A (en) * 1978-09-09 1980-12-16 Mannesmann Demag A.G. Handling apparatus for probe tubes to be attached to temperature gage and/or sampling lances in the _metallurgical field
US4258571A (en) * 1978-02-20 1981-03-31 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Magazine with centering and coupling elements for measuring and sampling devices
FR2516095A1 (fr) * 1981-11-10 1983-05-13 Fives Cail Babcock Installation d'affinage equipee d'un dispositif de mesure de la temperature et/ou de prelevement d'echantillons d'un bain d'acier liquide
US4438649A (en) * 1981-07-29 1984-03-27 Electric Power Research Institute, Inc. Apparatus for remotely positioning sensing devices in a reactor during operation thereof
US4438653A (en) * 1981-07-10 1984-03-27 Estel Hoogovens B.V. Sublance for measuring and/or sampling in a metallurgical furnace
US4875782A (en) * 1988-01-25 1989-10-24 Normag Corporation Automated temperature probe apparatus and method
US5168764A (en) * 1990-07-23 1992-12-08 Falk Richard A Method and apparatus for taking metal samples
US5435196A (en) * 1993-12-22 1995-07-25 Heraeus Electro-Nite International N.V Immersion probe for collecting slag samples
US6220748B1 (en) * 1999-01-15 2001-04-24 Alcoa Inc. Method and apparatus for testing material utilizing differential temperature measurements
US6581482B2 (en) * 2000-02-18 2003-06-24 Heraeus Electro-Nite International N.V. Sampler for melts
US6679627B1 (en) * 1997-11-04 2004-01-20 Rdc Controle Ltee Self-floating device for measuring the temperature of liquids
US20050132823A1 (en) * 2003-12-19 2005-06-23 Heraeus Electro-Nite International N.V. Sampling device
US20100122590A1 (en) * 2008-11-17 2010-05-20 Heraeus Electro-Nite International N.V. Device for sampling metal melts
US20110063628A1 (en) * 2008-10-28 2011-03-17 Zhi Xie Apparatus and method for measuring the liquid level of molten metal
US20120137757A1 (en) * 2010-12-07 2012-06-07 Heraeus Electro-Nite International N.V. Method and Apparatus for Analyzing Samples of Metal Melts

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8104325A (nl) * 1981-09-21 1983-04-18 Estel Hoogovens Bv Inrichting voor het geleiden van een sublans.
DE3834245A1 (de) * 1988-10-07 1990-04-12 Voest Alpine Ind Anlagen Vorrichtung zur diskontinuierlichen messdatenerfassung der schmelze
DE9114277U1 (de) * 1991-11-15 1992-01-09 Voest-Alpine Industrieanlagenbau Ges.m.b.H., Linz Meß- und/oder Probenahmelanze
GB0415849D0 (en) 2004-07-15 2004-08-18 Heraeus Electro Nite Int Guide system for signal lines, device for measuring temperatures and/or concentrations and use
CN107144595B (zh) * 2017-06-06 2023-09-01 南昌大学 热电偶和取样杯可重复利用的铸造铝合金热分析取样装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU127278A1 (ru) * 1959-07-27 1959-11-30 К.С. Гаргер Устройство дл отбора проб из действующего конвертера методом намораживани
US3250125A (en) * 1961-04-06 1966-05-10 Bonn Leonard Hot metal temperature measuring device and temperature measuring method
US3481201A (en) * 1967-10-02 1969-12-02 Richard A Falk Device for taking a molten sample
US3559485A (en) * 1969-02-25 1971-02-02 Bloom Eng Co Inc Method and apparatus for temperature measurement in a metallurgical furnace

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU127278A1 (ru) * 1959-07-27 1959-11-30 К.С. Гаргер Устройство дл отбора проб из действующего конвертера методом намораживани
US3250125A (en) * 1961-04-06 1966-05-10 Bonn Leonard Hot metal temperature measuring device and temperature measuring method
US3481201A (en) * 1967-10-02 1969-12-02 Richard A Falk Device for taking a molten sample
US3559485A (en) * 1969-02-25 1971-02-02 Bloom Eng Co Inc Method and apparatus for temperature measurement in a metallurgical furnace

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Transactions American Society for Metals, Vol. 29, December 1941, by K. Fetters. *

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921452A (en) * 1972-06-16 1975-11-25 Est Aciers Fins Continuous temperature measuring system for metallurgical furnaces
US3882726A (en) * 1972-08-07 1975-05-13 Voest Ag Water-cooled lance or probe destined to be inserted into metallurgical furnaces
US3896674A (en) * 1973-03-01 1975-07-29 United States Steel Corp Sensor probe control system
US3946610A (en) * 1973-06-12 1976-03-30 Societe Des Aciers Fins De L'est Temperature measuring device for metallurgical furnaces
US3985031A (en) * 1975-08-07 1976-10-12 Kennecott Copper Corporation Method of and apparatus for sampling molten slag
DE2552270A1 (de) * 1975-11-21 1977-06-02 Kuenzer Gmbh Mess Pruef Und Re Vorrichtung zum selbsttaetigen messen und/oder probenehmen in metallschmelzen
US4141249A (en) * 1977-03-14 1979-02-27 Nippon Kokan Kabushiki Kaisha Sub-lance assembly for sampling and temperature-measuring of molten metal during refining
US4204431A (en) * 1977-12-29 1980-05-27 Creusot-Loire Enterprises Device for temperature measurement and sampling of a steel
US4258571A (en) * 1978-02-20 1981-03-31 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Magazine with centering and coupling elements for measuring and sampling devices
US4239189A (en) * 1978-09-09 1980-12-16 Mannesmann Demag A.G. Handling apparatus for probe tubes to be attached to temperature gage and/or sampling lances in the _metallurgical field
US4438653A (en) * 1981-07-10 1984-03-27 Estel Hoogovens B.V. Sublance for measuring and/or sampling in a metallurgical furnace
US4438649A (en) * 1981-07-29 1984-03-27 Electric Power Research Institute, Inc. Apparatus for remotely positioning sensing devices in a reactor during operation thereof
FR2516095A1 (fr) * 1981-11-10 1983-05-13 Fives Cail Babcock Installation d'affinage equipee d'un dispositif de mesure de la temperature et/ou de prelevement d'echantillons d'un bain d'acier liquide
EP0079290A1 (fr) * 1981-11-10 1983-05-18 FIVES-CAIL BABCOCK, Société anonyme Installation d'affinage équipée d'un dispositif de mesure de la température et/ou de prélèvement d'échantillons d'un bain d'acier liquide
US4875782A (en) * 1988-01-25 1989-10-24 Normag Corporation Automated temperature probe apparatus and method
US5168764A (en) * 1990-07-23 1992-12-08 Falk Richard A Method and apparatus for taking metal samples
US5435196A (en) * 1993-12-22 1995-07-25 Heraeus Electro-Nite International N.V Immersion probe for collecting slag samples
US6679627B1 (en) * 1997-11-04 2004-01-20 Rdc Controle Ltee Self-floating device for measuring the temperature of liquids
US6220748B1 (en) * 1999-01-15 2001-04-24 Alcoa Inc. Method and apparatus for testing material utilizing differential temperature measurements
US6581482B2 (en) * 2000-02-18 2003-06-24 Heraeus Electro-Nite International N.V. Sampler for melts
US20050132823A1 (en) * 2003-12-19 2005-06-23 Heraeus Electro-Nite International N.V. Sampling device
US8001856B2 (en) 2003-12-19 2011-08-23 Heraeus Electro-Nite International N.V. Sampling device
US8661891B2 (en) * 2008-10-28 2014-03-04 Northeastern University Apparatus and method for measuring the liquid level of molten metal
US20110063628A1 (en) * 2008-10-28 2011-03-17 Zhi Xie Apparatus and method for measuring the liquid level of molten metal
US20100122590A1 (en) * 2008-11-17 2010-05-20 Heraeus Electro-Nite International N.V. Device for sampling metal melts
US8141439B2 (en) 2008-11-17 2012-03-27 Heraeus Electro-Nite International N.V. Device for sampling metal melts
US20120137757A1 (en) * 2010-12-07 2012-06-07 Heraeus Electro-Nite International N.V. Method and Apparatus for Analyzing Samples of Metal Melts
US8844386B2 (en) * 2010-12-07 2014-09-30 Heraeus Electro-Nite International N.V. Method and apparatus for analyzing samples of metal melts

Also Published As

Publication number Publication date
BE779052A (fr) 1972-08-07
GB1333022A (en) 1973-10-10
FR2126779A5 (zh) 1972-10-06
IT949078B (it) 1973-06-11
DE2206590A1 (zh) 1972-08-17

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Owner name: USX CORPORATION, A CORP. OF DE, STATELESS

Free format text: MERGER;ASSIGNOR:UNITED STATES STEEL CORPORATION (MERGED INTO);REEL/FRAME:005060/0960

Effective date: 19880112