RU2015122359A - Method for out-of-furnace steel processing - Google Patents

Method for out-of-furnace steel processing Download PDF

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Publication number
RU2015122359A
RU2015122359A RU2015122359A RU2015122359A RU2015122359A RU 2015122359 A RU2015122359 A RU 2015122359A RU 2015122359 A RU2015122359 A RU 2015122359A RU 2015122359 A RU2015122359 A RU 2015122359A RU 2015122359 A RU2015122359 A RU 2015122359A
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RU
Russia
Prior art keywords
metal
slag
ladle
furnace
low
Prior art date
Application number
RU2015122359A
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Russian (ru)
Other versions
RU2607877C2 (en
Inventor
Николай Владимирович Трутнев
Алексей Николаевич Божесков
Илья Васильевич Неклюдов
Вадим Валерьевич Морозов
Евгений Борисович Анисимов
Original Assignee
Открытое акционерное общество "Волжский трубный завод"
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Application filed by Открытое акционерное общество "Волжский трубный завод" filed Critical Открытое акционерное общество "Волжский трубный завод"
Priority to RU2015122359A priority Critical patent/RU2607877C2/en
Publication of RU2015122359A publication Critical patent/RU2015122359A/en
Application granted granted Critical
Publication of RU2607877C2 publication Critical patent/RU2607877C2/en

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    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing
    • 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
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
    • 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
    • C21C7/10—Handling in a vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Claims (5)

1. Способ внепечной обработки стали, включающий отсечку печного шлака, предварительное раскисление металла в ковше при выпуске из сталеплавильного агрегата кремнием, марганцем, присадку извести, наведение в печи-ковше сначала высокоосновного, а затем низкоосновного шлака, подогрев металла, вакуумирование, непрерывную разливку металла, непрерывное перемешивание металла аргоном, отличающийся тем, что при выпуске металла в ковш присаживают шлакообразующие: известь - (1,0-1,5)%, алюмокорундовую смесь - (0,20-0,25)%, карбид кремния - (0,10-0,15)% в количестве 10-12 кг/т и 1,3-1,4 кг/т чушкового алюминия.1. A method of out-of-furnace steel processing, including cutting off furnace slag, preliminary deoxidation of metal in the ladle when silicon, manganese is released from the steelmaking unit, lime additive, first inducing highly basic and then low-basic slag in the ladle furnace, heating the metal, evacuation, continuous casting of metal continuous mixing of metal with argon, characterized in that when the metal is released into the ladle, slag-forming substances are added: lime - (1.0-1.5)%, alumina-corundum mixture - (0.20-0.25)%, silicon carbide - (0 , 10-0.15)% in quantities 10-12 kg / m, and 1.3-1.4 kg / ton of aluminum ingots. 2. Способ по п. 1, отличающийся тем, что после подогрева металла в печи-ковше и наведения высокоосновного шлака и глубокой десульфурации, высокоосновной шлак удаляют, затем раскисленную алюминием сталь вакуумируют при остаточном давлении 0,13-0,067 кН/м2.2. The method according to p. 1, characterized in that after heating the metal in a ladle furnace and inducing highly basic slag and deep desulfurization, the highly basic slag is removed, then the steel deoxidized with aluminum is evacuated at a residual pressure of 0.13-0.067 kN / m 2 . 3. Способ по п. 2, отличающийся тем, что после окончания вакуумирования наводят легкоплавкий низкоосновный шлак без включения электроподогрева, для чего присаживают смесь цемента 28%, сиенитового концентрата 15%, формовочного песка 39%, серпентинита 10%, флюоритового концентрата 3% и углерода 5%.3. The method according to p. 2, characterized in that after the end of the evacuation, low-melting low-base slag is induced without electric heating, for which a mixture of cement 28%, syenite concentrate 15%, foundry sand 39%, serpentinite 10%, fluorite concentrate 3% and carbon 5%. 4. Способ по п. 3, отличающийся тем, что низкоосновный шлак в количестве 1,5-2,0 кг/т, засыпают теплоизолирующей рисовой лузгой.4. The method according to p. 3, characterized in that the low-base slag in an amount of 1.5-2.0 kg / t, is covered with heat-insulating rice husk. 5. Способ по п. 3, отличающийся тем, что производят разливку металла при перемешивании в сталеразливочном ковше аргоном 50-60% первоначального объема металла.5. The method according to p. 3, characterized in that the metal is cast with stirring in a steel pouring ladle with argon 50-60% of the initial volume of the metal.
RU2015122359A 2015-06-10 2015-06-10 Method for off-furnace steel treatment RU2607877C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2015122359A RU2607877C2 (en) 2015-06-10 2015-06-10 Method for off-furnace steel treatment

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Application Number Priority Date Filing Date Title
RU2015122359A RU2607877C2 (en) 2015-06-10 2015-06-10 Method for off-furnace steel treatment

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RU2015122359A true RU2015122359A (en) 2017-01-10
RU2607877C2 RU2607877C2 (en) 2017-01-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113881829A (en) * 2021-09-10 2022-01-04 北京科技大学 Treatment method for reducing hydrogen content of steel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108193018B (en) * 2017-12-25 2019-06-28 南京钢铁股份有限公司 A kind of LF refining furnace production anti-carburetion method of low-carbon and low-sulphur steel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2542761B1 (en) * 1983-03-15 1987-10-16 Vallourec PROCESS FOR MANUFACTURING HIGH-MACHINABILITY STEELS
FR2552107B1 (en) * 1983-09-20 1985-12-20 Vallourec PROCESS FOR TREATING STEEL WITH CALCIUM FOR GREAT COLD FITNESS AND LOW SILICON CONTENT
US4741772A (en) * 1984-05-08 1988-05-03 China Steel Corporation Si contained ferroalloy addition as a weak pre-deoxidation process in steelmaking
RU2145639C1 (en) * 1998-08-20 2000-02-20 Белорусский Металлургический Завод Method of ladle treatment of high-carbon steel
RU2362811C1 (en) * 2007-10-23 2009-07-27 Открытое акционерное общество "Научно-производственное объединение "Центральный научно-исследовательский институт технологии машиностроения" ОАО НПО "ЦНИИТМАШ" Method of steel out-furnace treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113881829A (en) * 2021-09-10 2022-01-04 北京科技大学 Treatment method for reducing hydrogen content of steel

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