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2 465 340

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(51)

IPC

C21C7/00(2006-01-01)

(21) (22)

Application

2011128556/02, 2011-07-08

(24)

Start date

2011-07-08

(22)

Actual filing date

2011-07-08

(45)

Published

2012-10-27

(72)

Inventor

Alekseev Leonid VjacheslavovichSnegirev Vladimir Jur'EvichValiakhmetov Al'Fed KhabibullaevichChajkovskij Jurij AntonovichNikolaev Oleg Anatol'Evich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

LOW-SILICON STEEL MAKING METHOD Russian patent published in 2012 - IPC C21C7/00

Abstract RU 2465340 C1

FIELD: metallurgy.

SUBSTANCE: method involves out-of-surface metal working at "furnace-ladle" unit. After molten metal is supplied to the above unit, covering slag is removed from steel-pouring ladle; new slag is induced by addition of lime and fluor spar in the ratio of (4…5):1 with total material consumption of 7…12 kg/t. Then, steel deoxidation is performed with primary aluminium on the basis of obtaining the content of acid-soluble aluminium of not less than 0.080%, metal heating to temperature of not less than 1620°C. After that, fluidised lime is injected in quantity of 2.8…4.2 kg/t.

EFFECT: use of invention provides the required desulphuration degree of steel without growth of silicon content during processing.

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RU 2 465 340 C1

Authors

Alekseev Leonid Vjacheslavovich

Snegirev Vladimir Jur'Evich

Valiakhmetov Al'Fed Khabibullaevich

Chajkovskij Jurij Antonovich

Nikolaev Oleg Anatol'Evich

Dates

2012-10-27—Published

2011-07-08—Filed