SE501054C2 - Sätt att anpassa mängden desoxidationsämnen och/eller legeringsämnen som tillsätts till en smälta i ett metallurgiskt kärl - Google Patents

Sätt att anpassa mängden desoxidationsämnen och/eller legeringsämnen som tillsätts till en smälta i ett metallurgiskt kärl

Info

Publication number
SE501054C2
SE501054C2 SE9300969A SE9300969A SE501054C2 SE 501054 C2 SE501054 C2 SE 501054C2 SE 9300969 A SE9300969 A SE 9300969A SE 9300969 A SE9300969 A SE 9300969A SE 501054 C2 SE501054 C2 SE 501054C2
Authority
SE
Sweden
Prior art keywords
slag
lance
smelt
density
substances
Prior art date
Application number
SE9300969A
Other languages
English (en)
Other versions
SE9300969D0 (sv
SE9300969L (sv
Inventor
Haakan Wahlberg
Lars Oskarsson
Original Assignee
Ssab Tunnplaat Ab
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 Ssab Tunnplaat Ab filed Critical Ssab Tunnplaat Ab
Priority to SE9300969A priority Critical patent/SE501054C2/sv
Publication of SE9300969D0 publication Critical patent/SE9300969D0/sv
Priority to PCT/SE1994/000872 priority patent/WO1996009414A1/en
Publication of SE9300969L publication Critical patent/SE9300969L/sv
Publication of SE501054C2 publication Critical patent/SE501054C2/sv

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • 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
    • 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
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4673—Measuring and sampling devices
    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • G01F23/16—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
    • G01F23/165—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid of bubbler type
    • G01F23/168—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid of bubbler type with electric indicating or recording
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/12—Dippers; Dredgers
    • G01N1/125—Dippers; Dredgers adapted for sampling molten metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Description

'5o1 054 2 man en kurva av i princip det utseende som visas i Figur 2. Diagrammet är lagt så att lansspetsens läge i skånken 11 och på lodräta axeln i diagrammet överens- stämmer. Mottrycket p i lansen är avsatt på vågräta axeln. Man ser att mottrycket är konstant till dess att lansspetsen når slaggytan. Sedan ökar mottrycket ungefär linjärt med ökat slaggdjup. När lansspetsen när stålsmältan kommer mottrycket att öka snabbare, men fortfarande linjärt, på grund av smältans högre densitet.
Utvärderingen görs lämpligen on-line i en dator och med ett program där man ut- nyttjar ett statistiskt synsätt får man en noggrann beräkning av lägena För slag- gens övre och undre yta 22, 23 och dess densitet. Pilama 24, 25 indikerar bryt- punktema som i sin tur indikerar ytornas 22, 23 lägen.

Claims (2)

3 501 054 Patentkrav
1. Sätt att anpassa mängden desoxidationsämnen och/eller legeringsämnen som tillsätts till en smälta i ett metallurgiskt kärl, k ä n n e t e c k n a t av att man tillför gas med antingen ett konstant flöde eller ett konstant tryck till en lans (14) och för ner lansen genom slaggen (13) och ner i badet (12) och vid konstant tryck mäter variationen i flöde eller vid konstant flöde mäter variationen i mottryck i lansen som funktion av lansens axiella läge och ur de uppmätta variationema beräknar slaggens (13) densitet och tjocklek, varefter man beräknar slaggvikten med kännedom om kärlets (11) area, slaggens (13) tjocklek och slaggens (13) densitet och, när man tillsätter desoxidatíonsäm- nen och/eller legeringsänmen, kompenserar för den mängd som slaggen, i bero- ende av slaggvikten, beräknas uppta.
2. Sätt enligt patentkrav 1, k ä n n e t e c k n at av att man före egentliga mätningen först mäter in slaggni- vån (22), företrädesvis med radar eller laser (21), och snabbmatar lansen (14) till ett läge nära slaggnivån.
SE9300969A 1993-03-24 1993-03-24 Sätt att anpassa mängden desoxidationsämnen och/eller legeringsämnen som tillsätts till en smälta i ett metallurgiskt kärl SE501054C2 (sv)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9300969A SE501054C2 (sv) 1993-03-24 1993-03-24 Sätt att anpassa mängden desoxidationsämnen och/eller legeringsämnen som tillsätts till en smälta i ett metallurgiskt kärl
PCT/SE1994/000872 WO1996009414A1 (en) 1993-03-24 1994-09-21 A method of adapting the amounts of additives such as deoxidizers and/or alloying elements

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9300969A SE501054C2 (sv) 1993-03-24 1993-03-24 Sätt att anpassa mängden desoxidationsämnen och/eller legeringsämnen som tillsätts till en smälta i ett metallurgiskt kärl
PCT/SE1994/000872 WO1996009414A1 (en) 1993-03-24 1994-09-21 A method of adapting the amounts of additives such as deoxidizers and/or alloying elements

Publications (3)

Publication Number Publication Date
SE9300969D0 SE9300969D0 (sv) 1993-03-24
SE9300969L SE9300969L (sv) 1994-09-25
SE501054C2 true SE501054C2 (sv) 1994-10-31

Family

ID=26661690

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9300969A SE501054C2 (sv) 1993-03-24 1993-03-24 Sätt att anpassa mängden desoxidationsämnen och/eller legeringsämnen som tillsätts till en smälta i ett metallurgiskt kärl

Country Status (2)

Country Link
SE (1) SE501054C2 (sv)
WO (1) WO1996009414A1 (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996009414A1 (en) * 1993-03-24 1996-03-28 SSAB Tunnplåt AB A method of adapting the amounts of additives such as deoxidizers and/or alloying elements

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113932879A (zh) * 2021-09-26 2022-01-14 中国恩菲工程技术有限公司 高温熔体自动探测装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501054C2 (sv) * 1993-03-24 1994-10-31 Ssab Tunnplaat Ab Sätt att anpassa mängden desoxidationsämnen och/eller legeringsämnen som tillsätts till en smälta i ett metallurgiskt kärl

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996009414A1 (en) * 1993-03-24 1996-03-28 SSAB Tunnplåt AB A method of adapting the amounts of additives such as deoxidizers and/or alloying elements

Also Published As

Publication number Publication date
SE9300969D0 (sv) 1993-03-24
SE9300969L (sv) 1994-09-25
WO1996009414A1 (en) 1996-03-28

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