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RU2003137282A - METHOD FOR REDUCING CHROMIUM CONTENT IN SLAG AT Smelting STAINLESS STEEL - Google Patents

METHOD FOR REDUCING CHROMIUM CONTENT IN SLAG AT Smelting STAINLESS STEEL Download PDF

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Publication number
RU2003137282A
RU2003137282A RU2003137282/02A RU2003137282A RU2003137282A RU 2003137282 A RU2003137282 A RU 2003137282A RU 2003137282/02 A RU2003137282/02 A RU 2003137282/02A RU 2003137282 A RU2003137282 A RU 2003137282A RU 2003137282 A RU2003137282 A RU 2003137282A
Authority
RU
Russia
Prior art keywords
slag
stainless steel
chromium content
smelting
ladle
Prior art date
Application number
RU2003137282/02A
Other languages
Russian (ru)
Other versions
RU2268310C2 (en
Inventor
Николай Иванович Воробьев (RU)
Николай Иванович Воробьев
Дмитрий Арнольдович Лившиц (RU)
Дмитрий Арнольдович Лившиц
Владимир Петрович Звонарев (RU)
Владимир Петрович Звонарев
Сергей Павлович Палкин (RU)
Сергей Павлович Палкин
Александр Николаевич Макаревич (RU)
Александр Николаевич Макаревич
Геннадий Александрович Братко (RU)
Геннадий Александрович Братко
Евгений Иванович Щербаков (RU)
Евгений Иванович Щербаков
Антон Григорьевич Левада (RU)
Антон Григорьевич Левада
Александр Викторович Горбатов (RU)
Александр Викторович Горбатов
Original Assignee
ОАО Чел бинский металлургический комбинат "МЕЧЕЛ" (RU)
ОАО Челябинский металлургический комбинат "МЕЧЕЛ"
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 ОАО Чел бинский металлургический комбинат "МЕЧЕЛ" (RU), ОАО Челябинский металлургический комбинат "МЕЧЕЛ" filed Critical ОАО Чел бинский металлургический комбинат "МЕЧЕЛ" (RU)
Priority to RU2003137282/02A priority Critical patent/RU2268310C2/en
Publication of RU2003137282A publication Critical patent/RU2003137282A/en
Application granted granted Critical
Publication of RU2268310C2 publication Critical patent/RU2268310C2/en

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Classifications

    • 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

Landscapes

  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Claims (2)

1. Способ снижения содержания хрома в шлаке при выплавке нержавеющей стали, включающий расплавление стальных отходов и легирующих добавок, раскисление и вспенивание шлака в электропечи, введение в ванну кислорода, выпуск полупродукта со шлаком в ковш, скачивание шлака, заливку металла в конвертер с донным дутьем, последующее обезуглероживание расплава и доведение плавки по химическому анализу до требуемых содержаний, отличающийся тем, что при выпуске полупродукта со шлаком в ковш для более полного восстановления хрома присаживают шлакообразующие добавки и раскислители.1. A method of reducing the chromium content in slag during the smelting of stainless steel, including the melting of steel waste and alloying additives, deoxidation and foaming of slag in an electric furnace, introduction of oxygen into a bath, production of an intermediate product with slag in a ladle, slag downloading, pouring metal into a bottom blast converter , subsequent decarburization of the melt and bringing the smelting according to chemical analysis to the required contents, characterized in that when the semi-product with slag is released into the ladle, slag is added to more fully recover the chromium forming additives and deoxidizers. 2. Способ по п.1, отличающийся тем, что в качестве раскислителя используют более дешевые материалы, например дробленый ферросилиций, кокс, отходы алюминиевого производства.2. The method according to claim 1, characterized in that cheaper materials are used as a deoxidizing agent, for example, crushed ferrosilicon, coke, aluminum production wastes.
RU2003137282/02A 2003-12-24 2003-12-24 Duplex process for stainless steel melting RU2268310C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2003137282/02A RU2268310C2 (en) 2003-12-24 2003-12-24 Duplex process for stainless steel melting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2003137282/02A RU2268310C2 (en) 2003-12-24 2003-12-24 Duplex process for stainless steel melting

Publications (2)

Publication Number Publication Date
RU2003137282A true RU2003137282A (en) 2005-07-20
RU2268310C2 RU2268310C2 (en) 2006-01-20

Family

ID=35842085

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2003137282/02A RU2268310C2 (en) 2003-12-24 2003-12-24 Duplex process for stainless steel melting

Country Status (1)

Country Link
RU (1) RU2268310C2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1687627A1 (en) * 1989-03-09 1991-10-30 Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина Method of melting steel with up to 5% chromium
SU1678850A1 (en) * 1989-05-03 1991-09-23 Московский институт стали и сплавов Process for production of chromium-manganese stainless steel
RU2197536C2 (en) * 2000-03-29 2003-01-27 Открытое акционерное общество "Кузнецкий металлургический комбинат" Method of making rail steel

Also Published As

Publication number Publication date
RU2268310C2 (en) 2006-01-20

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20111225