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2 084 543

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IPC

(21) (22)

Application

94045593/02, 1994-12-30

(22)

Actual filing date

1994-12-30

(45)

Published

1997-07-20

(72)

Inventor

Martynenko A.K.Korolev M.G.Savchenko V.I.Skuridin A.M.Stomakhin A.Ja.Lebedev V.I.

(73)

Holder

Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF TREATING METAL RELEASED FROM STEELMAKING UNIT IN LADLE Russian patent published in 1997 - IPC

Abstract RU 2084543 C1

FIELD: ferrous metallurgy. SUBSTANCE: invention relates to extra- furnace steel treatment using electroarc heating in ladle. Smelted in steelmaking unit metal is poured into ladle, alloying agents are added, metal is stirred by way of blowing in neutral gas into ladle with simultaneously heating metal by electroarc heater. During the heating, silicon-containing alloy is loaded into arc action zone with per-minute input value determined from dependence Q = (10-1000)q where Q is per-minute ferrosilicon input (kg silicon/t per 1 min), q per-minute input of neutral gas (cu.m/t per 1 min), and (10-1000) empirical coefficient characterizing degree of assimilation of ferrosilicon with smelt. After smelt heating is terminated, neutral gas keeps being fed for a time determined from relationship: τ =(0.05-0.5) where (0.05-0.5) is empirical coefficient characterizing degree of stirring smelt [(min•t)^1/2•m^3/2], and τ is time, min. EFFECT: enhanced efficiency of process. 1 tbl

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RU 2 084 543 C1

Authors

Martynenko A.K.

Korolev M.G.

Savchenko V.I.

Skuridin A.M.

Stomakhin A.Ja.

Lebedev V.I.

Dates

1997-07-20—Published

1994-12-30—Filed