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2 208 052

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Application

2002111084/02, 2002-04-24

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Start date

2002-04-24

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Actual filing date

2002-04-24

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Published

2003-07-10

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Inventor

Nokhrina O.I.Kolpak V.P.Dmitrienko V.I.Makhan'Kov A.V.Chichkov V.I.Shakirov K.M.

(73)

Holder

Sibirskij Gosudarstvennyj Industrial'Nyj Universitet

STEEL MELTING METHOD Russian patent published in 2003 - IPC

Abstract RU 2208052 C1

FIELD: ferrous metallurgy. SUBSTANCE: method involves charging burden into electric arc furnace; melting; oxidizing; skimming oxidizing slag; introducing oxide manganese-bearing materials, ferrosilicon, and lime, with manganese ore as oxide manganese-bearing material being added in an amount of 10-40.1 kg/t of steel; upon melting of manganese ore, feeding coke fines onto slag surface in an amount of 8-16% by weight of manganese ore; introducing ferrosilicon after 10-20 min holding period, with following adding of lime in an amount sufficient for producing of slag with alkalinity of 1.5-1.8. EFFECT: reduced consumption of ferrosilicon, wider range of steels melted with complete replacement of manganese ferric alloys by direct alloying from oxide manganese-bearing materials. 1 tbl, 1 ex

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RU 2 208 052 C1

Authors

Nokhrina O.I.

Kolpak V.P.

Dmitrienko V.I.

Makhan'Kov A.V.

Chichkov V.I.

Shakirov K.M.

Dates

2003-07-10—Published

2002-04-24—Filed

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