GB778407A - Improvements relating to methods of and apparatus for controlling the course of metallurgical processes - Google Patents

Improvements relating to methods of and apparatus for controlling the course of metallurgical processes

Info

Publication number
GB778407A
GB778407A GB4223/54A GB422354A GB778407A GB 778407 A GB778407 A GB 778407A GB 4223/54 A GB4223/54 A GB 4223/54A GB 422354 A GB422354 A GB 422354A GB 778407 A GB778407 A GB 778407A
Authority
GB
United Kingdom
Prior art keywords
radiation
pyrometer
feb
wedge
flame
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
GB4223/54A
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.)
Max Planck Institut fuer Eisenforschung
Original Assignee
Max Planck Institut fuer Eisenforschung
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 Max Planck Institut fuer Eisenforschung filed Critical Max Planck Institut fuer Eisenforschung
Publication of GB778407A publication Critical patent/GB778407A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
    • G01N21/72—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using flame burners

Landscapes

  • Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Radiation Pyrometers (AREA)

Abstract

778,407. Electric indicating systems. MACPLANCK - INSTITUT FUR EISENFORSCHUNG, E. V. Feb. 12, 1954 [Feb. 13, 1953; Feb. 16, 1953], No. 4223/54. Class 40 (1). [Also in Groups II and XL (b)] In supervising metallurgical processes in which flame is evolved, e.g. the dephosphorization of steel in a converter, a continuous measurement is made of the ratio of two characteristic spectral ranges of the flame spectrum. This process makes use of the change of spectral composition of the flame as dephosphorization progresses to determine the point in the dephosphorizing period at which a sudden change in the ratio takes place. A separate measurement of bath temperature is also made at this point and from a series of curves determined empirically and relating phosphorous content to bath temperature for various further blasting periods the further blasting period to be used is determined. Fig. 1 shows a pair of prism monochromators I, II, each of which is set to transmit a narrow band of radiation of a different wavelength. 4020 Š and 7200 Š are suggested. The intensities of the radiation from the two slits are compared by means of photo-multiplier tubes SEV1 and SEV2 connected in a differential circuit as shown. An optical wedge is provided in the right-hand radiation beam and this wedge may be adjusted so that meter I reads zero when the position of the wedge, as indicated on the scale Z gives the ratio of the two intensities. A nicol prism may be used instead of an optical wedge. A pyrometer is described for determining bath temperature. As shown (Fig. 5), a radiation sensitive device such as a photo-electric cell or thermocouple 8 is situated at the end of a tube 14 through which radiation enters. A filter 15 is provided in front of it. A blast of compressed air or other suitable gas is supplied to the outside of tube 11 which it enters through aperture 13 to prevent heated matter entering the pyrometer. Cooling water is circulated through the double jacket 18 of the pyrometer.
GB4223/54A 1953-02-13 1954-02-12 Improvements relating to methods of and apparatus for controlling the course of metallurgical processes Expired GB778407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE778407X 1953-02-13

Publications (1)

Publication Number Publication Date
GB778407A true GB778407A (en) 1957-07-10

Family

ID=6686960

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4223/54A Expired GB778407A (en) 1953-02-13 1954-02-12 Improvements relating to methods of and apparatus for controlling the course of metallurgical processes

Country Status (1)

Country Link
GB (1) GB778407A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396960A (en) * 1964-12-30 1968-08-13 Beteiligungs & Patentverw Gmbh Method of and apparatus for inspection and control of the reaction performance during the oxygen blowing process
EP0029796B1 (en) * 1979-09-28 1984-08-01 Arbed S.A. System for measuring the height of the slag in a metallurgical vessel, and for determining its physical condition
US4780832A (en) * 1984-08-22 1988-10-25 Rolls-Royce Plc Radiation probe and method of use

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396960A (en) * 1964-12-30 1968-08-13 Beteiligungs & Patentverw Gmbh Method of and apparatus for inspection and control of the reaction performance during the oxygen blowing process
EP0029796B1 (en) * 1979-09-28 1984-08-01 Arbed S.A. System for measuring the height of the slag in a metallurgical vessel, and for determining its physical condition
US4780832A (en) * 1984-08-22 1988-10-25 Rolls-Royce Plc Radiation probe and method of use

Similar Documents

Publication Publication Date Title
CN106768380B (en) The method that the test result of a kind of pair of infrared measurement of temperature equipment is modified
EP0213872A3 (en) Optical time-domain reflectometry
GB778407A (en) Improvements relating to methods of and apparatus for controlling the course of metallurgical processes
US2207309A (en) Controlling bessemer converters
US3903014A (en) Method of and apparatus for measuring and controlling the rate of carburization of a melt
US2397901A (en) Apparatus for measuring molten metal temperatures
US3610592A (en) Method and apparatus for estimating errors in pyrometer readings
WO2021149490A1 (en) Lance tip, converter internal temperature measuring equipment, and converter internal temperature measuring method
GB1061871A (en) Improvements in or relating to apparatus for measuring temperature changes
JPS57200827A (en) Temperature measuring method of combustion chamber in coke oven
FR2418816A1 (en) PROCESS FOR SETTING A REHEATING OVEN FOR STEEL INGOTS
US3640119A (en) Carbon content measurement in a basic oxygen furnace
JPS5258002A (en) Process for controlling temperature of furnace body of metallurgical f urnace
JP6901059B1 (en) Lance tip, temperature measurement equipment in converter and temperature measurement method in converter
JPS62175648A (en) Measuring method for temperature and density of gas
JPS5726721A (en) Surface temperature measuring device for object in furnace
FR2343996A1 (en) Hot refractory lining thickness measurement - using gamma radiation source and reference values
GB705327A (en) Improvements in methods of testing temperature of materials during their thermal treatment
JPS5578217A (en) Prediction system for resonant oscillation
JP3334528B2 (en) Method and apparatus for measuring temperature of molten metal
SU559128A1 (en) The method of controlling the temperature of the gas stream
Willey XLIX.—On active nitrogen. Part VII. Further studies upon the decay of the nitrogen after-glow
JPS62823A (en) Temperature measuring method
JPS5786050A (en) Probe for measuring temperature and/or sampling of molten metal
GB1066185A (en) Method and apparatus for controlling a combustion process at converters for manufacturing steel