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2 440 422

(13)

(51)

IPC

C21C7/00(2006-01-01)

(21) (22)

Application

2010127758/02, 2010-07-05

(24)

Start date

2010-07-05

(22)

Actual filing date

2010-07-05

(45)

Published

2012-01-20

(72)

Inventor

Alekseev Leonid VjacheslavovichSnegirev Vladimir Jur'EvichValiakhmetov Al'Fed KhabibullaevichChajkovskij Jurij AntonovichSarychev Boris AleksandrovichNikolaev Oleg Anatol'Evich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

OUT-OF-FURNACE STEEL TREATMENT METHOD Russian patent published in 2012 - IPC C21C7/00

Abstract RU 2440422 C1

FIELD: metallurgy.

SUBSTANCE: method involves formation of highly basic slag, steel deoxidation with aluminium, metal blowing with argon and introduction to it of calcium-containing materials. At that, after metal desulphurisation with highly basic slag till sulphur content is not more than 0.005%, metal is heated to the temperature of not less than 1630°C; after that, aluminium is added till its content of 0.050-0.070% is obtained, and injection of fluidised lime in quantity of 2.8-4.2 kg/t is performed at the rate of 100-150 kg/min.

EFFECT: method allows obtaining steel with sulphur content and reducing the flow of powder wire with calcium-containing materials.

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RU 2 440 422 C1

Authors

Alekseev Leonid Vjacheslavovich

Snegirev Vladimir Jur'Evich

Valiakhmetov Al'Fed Khabibullaevich

Chajkovskij Jurij Antonovich

Sarychev Boris Aleksandrovich

Nikolaev Oleg Anatol'Evich

Dates

2012-01-20—Published

2010-07-05—Filed