US3466929A - Measurement of the temperature of melts in converter vessels - Google Patents

Measurement of the temperature of melts in converter vessels Download PDF

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Publication number
US3466929A
US3466929A US573512A US3466929DA US3466929A US 3466929 A US3466929 A US 3466929A US 573512 A US573512 A US 573512A US 3466929D A US3466929D A US 3466929DA US 3466929 A US3466929 A US 3466929A
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US
United States
Prior art keywords
lining
vessel
guide tube
converter
temperature
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
US573512A
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English (en)
Inventor
Wilhelm Anton Fischer
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.)
Der Eisenhuttentechnik Mbh Gesell zur Forderung
FORDERUNG DER EISENHUTTENTECHN
Original Assignee
FORDERUNG DER EISENHUTTENTECHN
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 FORDERUNG DER EISENHUTTENTECHN filed Critical FORDERUNG DER EISENHUTTENTECHN
Application granted granted Critical
Publication of US3466929A publication Critical patent/US3466929A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • 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

Definitions

  • the measuring lance with its thermo-sensitive element is inserted laterally through the steel shell of the vessel and its refractory lining at a point below the level of the bath formed by the melt. Since the known protective sleeves for the thermo-sensitive elements probably withstand only one charge, it is necessary to provide the element with a new ceramic protective sleeve after each charge. The measuring lance with the element therefore cannot be fitted rigidly and permanently into the refractory lining of the vessel. It must be withdrawn after each charge to replace the element protective sleeve.
  • the lining of the vessel is provided with a steel guide tube for leading the measuring lance into the vessel. It has now been shown that with large converter vessels having refractory wall thickness of about 1 m., it is no longer possible for the guide tube, which extends between the measuring hole and the converter shell, to be fixed rigidly to the converter shell. The expansion of the lining after relining when it is hot blown and during the first charge mostly results in such a severe deformation of the guide tube that it is no longer possible to insert the straight measuring lance.
  • the vessel of a steel converter has a wall formed by a lining encased in a steel shell and a guide tube extending through the wall for leading a temperature measuring lance through the wall into the vessel, the guide tube passing through an aperture in the shell with a clearance and being sealed to the shell by a flexible seal.
  • the flexible seal is a bellows surrounding the guide tube.
  • a tubular spigot may be rigidly fixed to the outer surface of the lining around the aperture and the bellows is provided at each end with a flange one of which is secured to the spigot and the other of which is secured to an annular flange on the guide rod.
  • the bellows flanges can be released from the spigot and guide flange and the bellows removed and replaced by a rigid connection between the guide rod flange and spigot.
  • FIG. 1 One example of a vessel fitted with a lance guide tube in accordance with the invention is shown in the drawing which is a section through part of the converter vessel wall.
  • the vessel lining is made from tar-dolomite blocks 1 and between these and a steel shell 2 there is a layer of rear ramming mass 3.
  • a perforated block 4 with a boring 5 which is continued through the rear ramming mass 3 to a hole 6 in the shell 2.
  • a guide tube 7 which does not completely penetrate the lining and which at its end projecting beyond the shell 2 has a flange '8, attached by means of screws to a flange 9 of an elastic body 10.
  • This elastic body consists of a flexible bellows 11 which surrounds the guide tube 7 and which has a flange 9, 12 at each end.
  • the flange 12 is attached, by means of screws, to a hollow spigot 13 welded to the shell 2.
  • the measuring hole 14 in the perforated block 4 is closed by a solid plug which is only removed for the introduction of a measuring lance with its thermo-sensitive element in the guide tube 7 and the bored passage 5, which provides an extension of the tube.
  • the elastic body 10 may be removed and replaced by a rigid intermediate piece for subsequent changes.
  • the rigid intermediate piece must be replaced again by the elastic body 10. In this it is important that the guide tube 7 should be attached movably or flexibly to the shell while changes occur in length of the lining.
  • a steel converter vessel of the kind having a wall with a lining, a steel shell encasing said lining, a guide tube for leading a temperature measuring lance through said wall into said vessel, and means mounting said guide tube through said lining and shell;
  • the improved guide tube mounting means which comprises wall parts of said lining defining an aperture therethrough whereby said guide tube extends through said aperture with a clearance, and flexible sealing means sealing said guide tube to said steel shell.
  • said flexible sealing means comprises a bellows surrounding said guide rod.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
US573512A 1965-08-26 1966-08-19 Measurement of the temperature of melts in converter vessels Expired - Lifetime US3466929A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG44524A DE1274146B (de) 1965-08-26 1965-08-26 Vorrichtung zum kontinuierlichen Messen der Temperatur von Konverterschmelzen

Publications (1)

Publication Number Publication Date
US3466929A true US3466929A (en) 1969-09-16

Family

ID=7127484

Family Applications (1)

Application Number Title Priority Date Filing Date
US573512A Expired - Lifetime US3466929A (en) 1965-08-26 1966-08-19 Measurement of the temperature of melts in converter vessels

Country Status (7)

Country Link
US (1) US3466929A (enrdf_load_stackoverflow)
AT (1) AT271053B (enrdf_load_stackoverflow)
BE (1) BE685037A (enrdf_load_stackoverflow)
DE (1) DE1274146B (enrdf_load_stackoverflow)
GB (1) GB1097286A (enrdf_load_stackoverflow)
LU (1) LU51830A1 (enrdf_load_stackoverflow)
NL (1) NL6610655A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598380A (en) * 1968-12-19 1971-08-10 Voest Ag Device for inserting measuring instruments into a metallurgical vessel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU81512A1 (fr) * 1979-07-16 1981-02-03 Arbed Procede et dispositif pour la mesure du niveau de la scorie dans un recipient metallurgique et pour l'appreciation de son etat physique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091119A (en) * 1961-02-18 1963-05-28 Max Planck Inst Eisenforschung Temperature measuring apparatus
US3264874A (en) * 1962-05-30 1966-08-09 Max Planck Inst Eisenforschung Apparatus for measuring temperatures of iron and steel melts

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091119A (en) * 1961-02-18 1963-05-28 Max Planck Inst Eisenforschung Temperature measuring apparatus
US3264874A (en) * 1962-05-30 1966-08-09 Max Planck Inst Eisenforschung Apparatus for measuring temperatures of iron and steel melts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598380A (en) * 1968-12-19 1971-08-10 Voest Ag Device for inserting measuring instruments into a metallurgical vessel

Also Published As

Publication number Publication date
NL6610655A (enrdf_load_stackoverflow) 1967-02-27
DE1274146B (de) 1968-08-01
GB1097286A (en) 1968-01-03
LU51830A1 (enrdf_load_stackoverflow) 1966-10-26
AT271053B (de) 1969-05-27
BE685037A (enrdf_load_stackoverflow) 1967-01-16

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