ES359144A1 - Use of stack gas as oxygen potential measurements to control the bof process - Google Patents
Use of stack gas as oxygen potential measurements to control the bof processInfo
- Publication number
- ES359144A1 ES359144A1 ES359144A ES359144A ES359144A1 ES 359144 A1 ES359144 A1 ES 359144A1 ES 359144 A ES359144 A ES 359144A ES 359144 A ES359144 A ES 359144A ES 359144 A1 ES359144 A1 ES 359144A1
- Authority
- ES
- Spain
- Prior art keywords
- oxygen
- control
- bath
- lance
- 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
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 12
- 229910052760 oxygen Inorganic materials 0.000 title abstract 12
- 239000001301 oxygen Substances 0.000 title abstract 12
- 239000007789 gas Substances 0.000 title abstract 5
- 238000005259 measurement Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 239000002826 coolant Substances 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000002596 correlated effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000009628 steelmaking Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
-
- 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)
- Computer Vision & Pattern Recognition (AREA)
- Evolutionary Computation (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Medical Informatics (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Control apparatus for a basic oxygen furnace steel making installation of the type having an oxygen lance 16 for supplying oxygen to a molten metal bath 12 within the furnace 11 and positioning means 17 for moving the lance relative to the molten metal mass 12 for controlling the supply of oxygen thereto during the three reaction phases of a heat, includes instrumentation 19 for continuously deriving output measurement signals indicative of the oxygen content of the molten bath 12 and means for using the signals to control continuously the position of the lance 16 and the flow rate of oxygen supplied therethrough so as to controllably produce molten steel having a desired end-point temperature, carbon content and oxygen content. A disposable bomb thermocouple is inserted at 22 for obtaining the temperature of the molten mass 12 and a stack gas flow rate meter 21 measures the gas flow rate, all information being fed to a digital computer 25 which provides control signals for the lance height and oxygen blowing rate controls 17, 18, coolant addition control 26, turn-down control 27 and automatic charge control 28. The instrumentation 19 providing the stack gas analyzer provides output signals indicative of the oxygen partial pressure and the per cent of CO and CO 2 in the stack gas. The computer 25 solves the equation shown for the oxygen utilization factor (OUF), which is indicative of the oxygen content of the bath 12 and can also be correlated with the bath carbon content. The thermocouple temperature is compared with an integrated heat output signal representative of the predicted bath temperature and based on the time integration of the initial bath temperature, and a corrective signal is supplied, if necessary, e.g. to supply coolant additives.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67587767A | 1967-10-17 | 1967-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES359144A1 true ES359144A1 (en) | 1970-05-16 |
Family
ID=24712328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES359144A Expired ES359144A1 (en) | 1967-10-17 | 1968-10-14 | Use of stack gas as oxygen potential measurements to control the bof process |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3561743A (en) |
| BE (1) | BE722376A (en) |
| DE (1) | DE1803047A1 (en) |
| ES (1) | ES359144A1 (en) |
| FR (1) | FR1594663A (en) |
| GB (1) | GB1239253A (en) |
| NL (1) | NL6814899A (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3871871A (en) * | 1967-12-11 | 1975-03-18 | Centre Nat Rech Metall | Monitoring and control of pig iron refining |
| US3707069A (en) * | 1970-10-13 | 1972-12-26 | Air Pollution Ind | Gas collector for steel furnace |
| US3816720A (en) * | 1971-11-01 | 1974-06-11 | Union Carbide Corp | Process for the decarburization of molten metal |
| 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 |
| AU505706B2 (en) * | 1976-02-24 | 1979-11-29 | Nippon Steel Corporation | Controlling molten steel temperature and carbon content in oxygen converter |
| US4133036A (en) * | 1976-02-26 | 1979-01-02 | Republic Steel Corporation | Method and system for monitoring a physical condition of a medium |
| FR2440792A1 (en) * | 1978-11-10 | 1980-06-06 | Gailly Sa Fonderies | PROCESS AND INSTALLATION FOR REGENERATING MOLDING SANDS |
| US4416691A (en) * | 1980-07-03 | 1983-11-22 | Kobe Steel, Ltd. | Method for converter blow control |
| US4731732A (en) * | 1985-08-07 | 1988-03-15 | Aluminum Company Of America | Method and apparatus for determining soluble gas content |
| US5610346A (en) * | 1996-01-05 | 1997-03-11 | Bethlehem Steel Corporation | Apparatus for storing and dropping expendable BOF sensors |
| EP0827554B1 (en) | 1996-03-22 | 2002-11-13 | Steel Technology Corporation | Stable operation of a smelter reactor |
| US5984998A (en) * | 1997-11-14 | 1999-11-16 | American Iron And Steel Institute | Method and apparatus for off-gas composition sensing |
| US6591215B1 (en) * | 1999-02-18 | 2003-07-08 | Furnace Control Corp. | Systems and methods for controlling the activity of carbon in heat treating atmospheres |
| US6693947B1 (en) | 2002-09-25 | 2004-02-17 | D. L. Schroeder & Associates | Method to protect the anode bottoms in batch DC electric arc furnace steel production |
| DE102010035411A1 (en) * | 2010-08-25 | 2012-03-01 | Sms Siemag Ag | Method for controlling the temperature of the metal bath during the blowing process in a converter |
| CN102169326B (en) * | 2011-03-02 | 2013-11-13 | 中冶南方(武汉)威仕工业炉有限公司 | System for optimizing optimal furnace temperature set value based on data mining |
| US9956609B1 (en) * | 2014-06-24 | 2018-05-01 | Melt Cognition, LLC | Metal sorting, melting and fabrication apparatus and methods |
| CN107299183B (en) * | 2017-06-28 | 2022-06-28 | 河钢股份有限公司邯郸分公司 | System and method for intelligently reducing converter final slag oxidability |
| CN115976298B (en) * | 2023-01-09 | 2025-09-02 | 福建三钢闽光股份有限公司 | Anti-splashing control process for converter high-speed iron smelting based on flue gas CO content changes |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3184226A (en) * | 1961-06-06 | 1965-05-18 | Ajax Magnethermic Corp | Automatic pouring furnace |
| DE1433443B2 (en) * | 1964-05-23 | 1972-01-27 | Fried Krupp GmbH, 4300 Essen | PROCEDURES FOR MONITORING AND CONTROLLING THE OXYGEN FILLING PROCESS |
| US3396580A (en) * | 1966-07-25 | 1968-08-13 | Gen Electric | Storage and release apparatus for measuring devices |
-
1967
- 1967-10-17 US US675877A patent/US3561743A/en not_active Expired - Lifetime
-
1968
- 1968-09-30 GB GB1239253D patent/GB1239253A/en not_active Expired
- 1968-10-14 ES ES359144A patent/ES359144A1/en not_active Expired
- 1968-10-14 FR FR1594663D patent/FR1594663A/fr not_active Expired
- 1968-10-15 DE DE19681803047 patent/DE1803047A1/en active Pending
- 1968-10-16 BE BE722376D patent/BE722376A/xx unknown
- 1968-10-17 NL NL6814899A patent/NL6814899A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1594663A (en) | 1970-06-08 |
| US3561743A (en) | 1971-02-09 |
| BE722376A (en) | 1969-04-01 |
| DE1803047A1 (en) | 1969-10-02 |
| GB1239253A (en) | 1971-07-14 |
| NL6814899A (en) | 1969-04-21 |
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