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Application

97104351/02, 1997-03-20

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Start date

1997-03-20

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Actual filing date

1997-03-20

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Published

2000-07-10

(72)

Inventor

Rakovskij B.M.Romanova V.S.Savchuk N.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD OF BLAST-FURNACE SMELTING Russian patent published in 2000 - IPC

Abstract RU 2152435 C2

FIELD: metallurgy; blast-furnace smelting. SUBSTANCE: method consists in separate charging of ore to peripheral zone of furnace top whose width is equal to 0.6-0.7 of furnace top radius and loading of fuel to axilla zone whose radius is equal to 0.3 - 0.4 of furnace top radius. Coke, hard coal or coal bricks are used as fuel; hot blast is enriched with ozygen to 30 - 80%. In case of non-uniformity of lowering of melting-stock column above limits of mechanical stability of smelting, pressure of blast-furnace gas is additional changed relative to its nominal magnitude. EFFECT: saving of solid fuel to 0.45 kg/kg of cast-iron. 5 cl, 8 dwg

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RU 2 152 435 C2

Authors

Rakovskij B.M.

Romanova V.S.

Savchuk N.A.

Dates

2000-07-10—Published

1997-03-20—Filed

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