GB1252899A - - Google Patents
Info
- Publication number
- GB1252899A GB1252899A GB1252899DA GB1252899A GB 1252899 A GB1252899 A GB 1252899A GB 1252899D A GB1252899D A GB 1252899DA GB 1252899 A GB1252899 A GB 1252899A
- Authority
- GB
- United Kingdom
- Prior art keywords
- measurements
- gases
- dec
- acoustic wave
- gas
- 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
Classifications
-
- 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
- C21C5/30—Regulating or controlling the blowing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
1,252,899. Controlling oxygen steelmaking. CENTRE NATIONAL DE RECHERCHES METALLURGIQUES. Dec.6, 1968 [Dec.11, 1967], No.58035/68. Heading C7D. The velocity, carbon content and temperature of the exhaust gases are determined at a location upstream of that where CO is burnt to CO 2 , all of these factors being obtained by physical measurements only; from them the rate of decarburization is calculated, and refining conditions so controlled that the decarburization rate follows a predetermined course. Preferably the gas velocity is obtained by timing the passage of an acoustic wave through the stream, while carbon content is determined from measurements of the intensity of thermal radiation emitted by the gases in particular wavelength ranges, or from measurements of the absorption of electromagnetic radiation by the gases. The gas temperature may be obtained from the frequency of a stationary acoustic wave set up in a guide of given length positioned in the gas stream. The theoretical bases for the determinations are given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU55064 | 1967-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1252899A true GB1252899A (en) | 1971-11-10 |
Family
ID=19725437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1252899D Expired GB1252899A (en) | 1967-12-11 | 1968-12-06 |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE723303A (en) |
| DE (1) | DE1813741A1 (en) |
| FR (1) | FR1594450A (en) |
| GB (1) | GB1252899A (en) |
| LU (1) | LU55064A1 (en) |
| NL (1) | NL6817638A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2219975A1 (en) * | 1973-03-01 | 1974-09-27 | Centre Rech Metallurgique | Controlling the refining of pig iron - by adjusting lance height,oxygen flow and material addns |
-
1967
- 1967-12-11 LU LU55064D patent/LU55064A1/xx unknown
-
1968
- 1968-10-31 BE BE723303D patent/BE723303A/xx unknown
- 1968-12-06 GB GB1252899D patent/GB1252899A/en not_active Expired
- 1968-12-09 NL NL6817638A patent/NL6817638A/xx unknown
- 1968-12-10 DE DE19681813741 patent/DE1813741A1/en active Pending
- 1968-12-11 FR FR1594450D patent/FR1594450A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| LU55064A1 (en) | 1969-07-17 |
| FR1594450A (en) | 1970-06-01 |
| DE1813741A1 (en) | 1969-07-03 |
| BE723303A (en) | 1969-04-30 |
| NL6817638A (en) | 1969-06-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |