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2 197 539

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IPC

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Application

99112058/02, 1999-06-01

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Start date

1999-06-01

(22)

Actual filing date

1999-06-01

(45)

Published

2003-01-27

(72)

Inventor

Dement'Ev V.P.Kozyrev N.A.Mogil'Nyj V.V.Shishmarev A.A.Chernjak S.S.Sychev P.E.Vojloshnikov V.D.Pozdeev V.N.Tuzhilina L.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF MAKING RAIL STEEL IN ELECTRIC ARC FURNACES Russian patent published in 2003 - IPC

Abstract RU 2197539 C2

FIELD: ferrous metallurgy; making steel in electric arc furnaces. SUBSTANCE: proposed includes oxidation stage with slag flushing, reducing stage and deoxidation of slag during reducing stage. At the end of oxidation stage after slag flushing, strontium-barium carbonatite, lime and feldspar are added to furnace at ratio (1/0-2/0) : (2.5-5.0) : (0.10- 1.0), respectively. Amount of slag at basicity of 1.5 to 4.0 ranges from 1.5 to 4.0% of mass of metal. EFFECT: improved impact elasticity at positive and negative temperatures. 2 tbl

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RU 2 197 539 C2

Authors

Dement'Ev V.P.

Kozyrev N.A.

Mogil'Nyj V.V.

Shishmarev A.A.

Chernjak S.S.

Sychev P.E.

Vojloshnikov V.D.

Pozdeev V.N.

Tuzhilina L.V.

Dates

2003-01-27—Published

1999-06-01—Filed