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2 302 472

(13)

(51)

IPC

C21C7/00(2006-01-01)

C22B9/00(2006-01-01)

(21) (22)

Application

2005131043/02, 2005-10-06

(24)

Start date

2005-10-06

(22)

Actual filing date

2005-10-06

(45)

Published

2007-07-10

(72)

Inventor

Neklesa Anatolij TimofeevichNovinskij Vadim VladislavovichNecheporenko Vladimir AndreevichBorovikov Gennadij Fedorovich

(73)

Holder

Neklesa Anatolij Timofeevich

METHOD OF OFF-FURNACE TREATMENT OF STEEL Russian patent published in 2007 - IPC C21C7/00 C22B9/00

Abstract RU 2302472 C1

FIELD: metallurgy; off-furnace treatment of steel.

SUBSTANCE: proposed method includes heating and blowing the metal melt in ladle at upper and lower levels. Melt is heated by jet of plasma-forming gas. Top blowing is carried out at the slag-metal interface. After top blowing, alloying additives are introduced. Bottom blowing is carried out in reversing the gas jet from 0.5 to 0.9 of height of metal in ladle at introducing the alloying additives. Inert gas or nitrogen is used as plasma-forming gas.

EFFECT: homogeneity of chemical composition.

2 cl, 2 ex

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RU 2 302 472 C1

Authors

Neklesa Anatolij Timofeevich

Novinskij Vadim Vladislavovich

Necheporenko Vladimir Andreevich

Borovikov Gennadij Fedorovich

Dates

2007-07-10—Published

2005-10-06—Filed