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2 088 675

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C1

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IPC

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Application

94018023/02, 1994-05-17

(22)

Actual filing date

1994-05-17

(45)

Published

1997-08-27

(72)

Inventor

Frantsenjuk I.V.Rjabov V.V.Kazadzhan L.B.Korolev M.G.Karasev A.V.Savchenko V.I.Nastich V.P.Pegov V.G.Lebedev V.I.

(73)

Holder

Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF STEEL PROCESSING Russian patent published in 1997 - IPC

Abstract RU 2088675 C1

FIELD: ferrous metallurgy. SUBSTANCE: invention relates to extra-furnace processing of metal in production of low-carbon steel sorts containing less than 0.01% carbon, including electric steels. When evacuating non-deoxidized steel with addition of iron oxide-based solid oxidant into vacuum chamber, the oxidant is used in the form of flux in amount providing proportion between oxygen in iron oxides and metal carbon as high as 0.5-3.0 stoichiometrically required quantity for additionally oxidizing carbon to target concentration with following weight ratio of components: (FeO + Fe2O3 + Fe3O4) : CaO : CaF2 = 1.000:(0.400-0.290):(0.029-0.040). Solid oxidant is added into vacuum chamber in a number of portions. EFFECT: enhanced efficiency of process. 2 cl

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RU 2 088 675 C1

Authors

Frantsenjuk I.V.

Rjabov V.V.

Kazadzhan L.B.

Korolev M.G.

Karasev A.V.

Savchenko V.I.

Nastich V.P.

Pegov V.G.

Lebedev V.I.

Dates

1997-08-27—Published

1994-05-17—Filed

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