GB1486423A - Method and apparatus for process control - Google Patents

Method and apparatus for process control

Info

Publication number
GB1486423A
GB1486423A GB5756773A GB5756773A GB1486423A GB 1486423 A GB1486423 A GB 1486423A GB 5756773 A GB5756773 A GB 5756773A GB 5756773 A GB5756773 A GB 5756773A GB 1486423 A GB1486423 A GB 1486423A
Authority
GB
United Kingdom
Prior art keywords
signal
vessel
oxygen
agitation
weight
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
GB5756773A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Automation International Ltd
Original Assignee
GEC Mechanical Handling Ltd
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 by GEC Mechanical Handling Ltd filed Critical GEC Mechanical Handling Ltd
Priority to GB5756773A priority Critical patent/GB1486423A/en
Priority to NL7415400A priority patent/NL7415400A/en
Priority to JP13942574A priority patent/JPS5092211A/ja
Priority to BR1029074A priority patent/BR7410290A/en
Priority to DE19742458532 priority patent/DE2458532A1/en
Priority to FR7440855A priority patent/FR2254783B3/fr
Priority to IT7060474A priority patent/IT1027053B/en
Priority to CA215,754A priority patent/CA1041770A/en
Priority to ES432805A priority patent/ES432805A1/en
Priority to AR25688574A priority patent/AR223128A1/en
Priority to US05/721,477 priority patent/US4135915A/en
Publication of GB1486423A publication Critical patent/GB1486423A/en
Expired legal-status Critical Current

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01G3/1406—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports combined with special measuring circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

1486423 Monitoring liquid treatment GEC MECHANICAL HANDLING Ltd 11 Dec 1974 [12 Dec 1973] 57567/73 Heading G1N [Also in Division C7] The treatment of a liquid in a vessel 1 is monitored by producing an electrical signal representing the weight change of the vessel, extracting a part of that signal which is produced by agitation of that liquid, recording the part, and comparing the recording with an idealized reference curve. As shown, an oxygen steelmaking refractory vessel 1 is mounted by trunnions 3 in bearings 4, each bearing 4 being supported by eight transducers 6. Each transducer comprises a steel cylinder carrying a plurality of foil strain gauges connected in a bridge circuit. The weight representative output signal from summing amplifier 10 is tared at 11, and a sealing amplifier 12 produces a signal representing the change in weight of vessel 1 during the steel making process which signal is recorded at 13, the trace being shown in Fig. 2. Agitation monitor 15 extracts that part of the signal which lies in the frequency range 0À05 to 5 or 0À1 to 1 Hertz to produce an agitation signal which is recorded at 17, trace shown on Fig. 3. The lines 28, 29 respectively at which oxygen lance 7 should be moved into its final position and at which the oxygen supply should be terminated are determined by comparison of the record in Fig. 3 with the reference curve. The invention may also be applied to steel making in which oxygen is injected through the vessel base at 31, and to brewing or winemaking.
GB5756773A 1973-12-12 1973-12-12 Method and apparatus for process control Expired GB1486423A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
GB5756773A GB1486423A (en) 1973-12-12 1973-12-12 Method and apparatus for process control
NL7415400A NL7415400A (en) 1973-12-12 1974-11-26 METHOD AND DEVICE FOR PROCESS CONTROL.
JP13942574A JPS5092211A (en) 1973-12-12 1974-12-04
BR1029074A BR7410290A (en) 1973-12-12 1974-12-09 APPLIANCE AND PROCESS TO CONTROL THE MEDIA TREATMENT WITHIN A CONTAINER
DE19742458532 DE2458532A1 (en) 1973-12-12 1974-12-11 METHOD AND DEVICE FOR CONTROLLING KINETIC ENERGY
FR7440855A FR2254783B3 (en) 1973-12-12 1974-12-11
IT7060474A IT1027053B (en) 1973-12-12 1974-12-11 KINETICS EQUIPMENT DANGEROUSLY AR FLICABLE TO THE PRODUCTION PROCESS OF OXYGEN STEEL
CA215,754A CA1041770A (en) 1973-12-12 1974-12-11 Kinetic energy monitor
ES432805A ES432805A1 (en) 1973-12-12 1974-12-11 Method and apparatus for process control
AR25688574A AR223128A1 (en) 1973-12-12 1974-12-12 APPARATUS TO MONITOR THE TREATMENT OF A MEDIA CONTAINED IN A CONTAINER
US05/721,477 US4135915A (en) 1973-12-12 1976-09-08 Kinetic energy monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5756773A GB1486423A (en) 1973-12-12 1973-12-12 Method and apparatus for process control

Publications (1)

Publication Number Publication Date
GB1486423A true GB1486423A (en) 1977-09-21

Family

ID=10479500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5756773A Expired GB1486423A (en) 1973-12-12 1973-12-12 Method and apparatus for process control

Country Status (10)

Country Link
JP (1) JPS5092211A (en)
AR (1) AR223128A1 (en)
BR (1) BR7410290A (en)
CA (1) CA1041770A (en)
DE (1) DE2458532A1 (en)
ES (1) ES432805A1 (en)
FR (1) FR2254783B3 (en)
GB (1) GB1486423A (en)
IT (1) IT1027053B (en)
NL (1) NL7415400A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003068996A1 (en) * 2002-02-15 2003-08-21 Nucor Corporation Model-based system for determining process parameters for the ladle refinement of steel

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT347984B (en) * 1975-08-14 1979-01-25 Voest Ag SLIDING JOINT BEARINGS, IN PARTICULAR FOR TILTING CONVERTER
AT347988B (en) * 1976-02-03 1979-01-25 Voest Ag TILTABLE, METALLURGICAL VESSEL, IN PARTICULAR STEELWORKS CONVERTER
US4191885A (en) * 1978-12-12 1980-03-04 Hylsa, S.A. Method for determining weight of molten metal in situ

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003068996A1 (en) * 2002-02-15 2003-08-21 Nucor Corporation Model-based system for determining process parameters for the ladle refinement of steel
US6808550B2 (en) 2002-02-15 2004-10-26 Nucor Corporation Model-based system for determining process parameters for the ladle refinement of steel
US6921425B2 (en) 2002-02-15 2005-07-26 Nucor Corporation Model-based system for determining process parameters for the ladle refinement of steel
US7211127B2 (en) 2002-02-15 2007-05-01 Nucor Corporation Model-based system for determining process parameters for the ladle refinement of steel

Also Published As

Publication number Publication date
DE2458532A1 (en) 1975-06-19
ES432805A1 (en) 1976-11-01
CA1041770A (en) 1978-11-07
FR2254783B3 (en) 1977-09-16
IT1027053B (en) 1978-11-20
NL7415400A (en) 1975-06-16
AR223128A1 (en) 1981-07-31
FR2254783A1 (en) 1975-07-11
JPS5092211A (en) 1975-07-23
BR7410290A (en) 1976-06-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee