FR2300132A1 - Carbon content of liquid iron determnd. - in converter during top blowing with oxygen (BE060876) - Google Patents
Carbon content of liquid iron determnd. - in converter during top blowing with oxygen (BE060876)Info
- Publication number
- FR2300132A1 FR2300132A1 FR7601620A FR7601620A FR2300132A1 FR 2300132 A1 FR2300132 A1 FR 2300132A1 FR 7601620 A FR7601620 A FR 7601620A FR 7601620 A FR7601620 A FR 7601620A FR 2300132 A1 FR2300132 A1 FR 2300132A1
- Authority
- FR
- France
- Prior art keywords
- content
- values
- oxygen
- blow
- liquid iron
- 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.)
- Granted
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)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Actual C content of liquid iron in a converter during the O top blow is determined by measurement of CO and CO2 in the waste gas comprises the detn. of the C lost by combustion during the last third part of blowing O using three different linear approximation equations (1) using rate of decarburisation dC/dt or CO2 content (t) and their 1st differential quotient detd. from the waste gas anal. thus (2) using the oxygen blow quantity O2(t) based on the phys. - chem. balance of O quantity detd. from the charge and which is required to give the final C content, C2 = b0 + b1 (O2 soll-O2(t)), (3) assuming a linear decrease of percentage C during the last mins. o the blow (ta moment when evaluation begins); C3 = c0+c1 (t-ta). The individual factors C1, C2, C3 are evaluated by using A, B, C the sum of which is 1, and in the case where the exptl. and calcd. values for the detn. of C1 and C2 are not affected by faulty anal., they are approx. A:B:C 4:2:1, and in the case of exptl. values with errors the incorrect value is zero and the other two values are at a ratio B:C resp. A:C 2:1 (a1, a2, alpha1, alpha2, b0, b1, c0, c1 are constants, K, K1 constant amplifier factor).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752505065 DE2505065B2 (en) | 1975-02-06 | 1975-02-06 | PROCEDURE FOR DETERMINING THE ACTUAL CARBON CONTENT OF THE OXYGEN INFLATABLE CONVERTER DURING BUBBLING |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2300132A1 true FR2300132A1 (en) | 1976-09-03 |
| FR2300132B3 FR2300132B3 (en) | 1979-06-22 |
Family
ID=5938281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7601620A Granted FR2300132A1 (en) | 1975-02-06 | 1976-01-21 | Carbon content of liquid iron determnd. - in converter during top blowing with oxygen (BE060876) |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT370773B (en) |
| BE (1) | BE838338A (en) |
| DE (1) | DE2505065B2 (en) |
| FR (1) | FR2300132A1 (en) |
| LU (1) | LU74176A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2401226A1 (en) * | 1977-08-22 | 1979-03-23 | Kobe Steel Ltd | METHOD FOR DETERMINING THE END OF BLOWING IN A CONVERTER |
| CN113076505A (en) * | 2020-01-05 | 2021-07-06 | 上海梅山钢铁股份有限公司 | Method for calculating decarburization rate of molten steel of converter |
| CN113076505B (en) * | 2020-01-05 | 2024-06-04 | 上海梅山钢铁股份有限公司 | Converter molten steel decarburization rate calculation method |
-
1975
- 1975-02-06 DE DE19752505065 patent/DE2505065B2/en not_active Ceased
-
1976
- 1976-01-13 LU LU74176A patent/LU74176A1/xx unknown
- 1976-01-16 AT AT0027776A patent/AT370773B/en not_active IP Right Cessation
- 1976-01-21 FR FR7601620A patent/FR2300132A1/en active Granted
- 1976-02-06 BE BE164147A patent/BE838338A/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2401226A1 (en) * | 1977-08-22 | 1979-03-23 | Kobe Steel Ltd | METHOD FOR DETERMINING THE END OF BLOWING IN A CONVERTER |
| CN113076505A (en) * | 2020-01-05 | 2021-07-06 | 上海梅山钢铁股份有限公司 | Method for calculating decarburization rate of molten steel of converter |
| CN113076505B (en) * | 2020-01-05 | 2024-06-04 | 上海梅山钢铁股份有限公司 | Converter molten steel decarburization rate calculation method |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA27776A (en) | 1978-10-15 |
| BE838338A (en) | 1976-08-06 |
| AT370773B (en) | 1983-05-10 |
| DE2505065A1 (en) | 1976-08-19 |
| DE2505065B2 (en) | 1976-12-16 |
| LU74176A1 (en) | 1976-07-20 |
| FR2300132B3 (en) | 1979-06-22 |
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