GB1239253A - - Google Patents

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Publication number
GB1239253A
GB1239253A GB1239253DA GB1239253A GB 1239253 A GB1239253 A GB 1239253A GB 1239253D A GB1239253D A GB 1239253DA GB 1239253 A GB1239253 A GB 1239253A
Authority
GB
United Kingdom
Prior art keywords
oxygen
bath
control
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
Application number
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 filed Critical
Publication of GB1239253A publication Critical patent/GB1239253A/en
Expired legal-status Critical Current

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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

Abstract

1,239,253. Controlling oxygen steelmaking. GENERAL ELECTRIC CO. Sept. 30, 1968 [Oct. 17, 1967], No.46225/68. Heading C7D. [Also in Division G3 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.
GB1239253D 1967-10-17 1968-09-30 Expired GB1239253A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67587767A 1967-10-17 1967-10-17

Publications (1)

Publication Number Publication Date
GB1239253A true GB1239253A (en) 1971-07-14

Family

ID=24712328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1239253D Expired GB1239253A (en) 1967-10-17 1968-09-30

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 (18)

* Cited by examiner, † Cited by third party
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
US6171364B1 (en) 1996-03-22 2001-01-09 Steel Technology Corporation Method for 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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
US3561743A (en) 1971-02-09
DE1803047A1 (en) 1969-10-02
NL6814899A (en) 1969-04-21
FR1594663A (en) 1970-06-08
ES359144A1 (en) 1970-05-16
BE722376A (en) 1969-04-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees