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 processesInfo
- 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
Links
- 238000010310 metallurgical process Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 230000005855 radiation Effects 0.000 abstract 5
- 238000005422 blasting Methods 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 2
- 230000003287 optical effect Effects 0.000 abstract 2
- 230000003595 spectral effect Effects 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 abstract 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
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.
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)
| 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 |
-
1954
- 1954-02-12 GB GB4223/54A patent/GB778407A/en not_active Expired
Cited By (3)
| 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 |
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