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2 514 125

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IPC

C21C7/06(2006-01-01)

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Application

2012151466/02, 2012-11-30

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Start date

2012-11-30

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Actual filing date

2012-11-30

(45)

Published

2014-04-27

(72)

Inventor

Alekseev Leonid VjacheslavovichSnegirev Vladimir Jur'EvichValiakhmetov Al'Fed KhabibullaevichKrasnojartsev Aleksej Anatol'EvichNikolaev Oleg Anatol'Evich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF LOW-CARBON STEEL DEOXIDATION Russian patent published in 2014 - IPC C21C7/06

Abstract RU 2514125 C1

FIELD: metallurgy.

SUBSTANCE: in compliance with this method, hard slag-forming mix (HSFM), aluminium and ferromanganese are introduced to steel teeming ladle from the converter. Note here that during metal tapping into teeming ladle secondary aluminium ingots and carbon ferromanganese are used as deoxidisers. Note here that in case the ladle is filled for its ¹/₅-¹/₄-volume 0.8…1.0 kg/t of secondary aluminium ingots are introduced. Note that the ladle is filled for its ¹/₃-¹/₂-volume 1.5…3.5 kg/t of carbon ferromanganese are added. Note here that in case the ladle is filled for its ¹/₂-²/₃-volume 1.5…2.0 kg/t of secondary aluminium ingots and HSFM are introduced. Note also that during the metal tapping from converter, metal is blown with argon via ladle bottom plugs at intensity of 0.2…0.5 l/(t*min) for 5…8 min.

EFFECT: better recovery of aluminium and ferroalloys, stabilised teeming, better steel quality.

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RU 2 514 125 C1

Authors

Alekseev Leonid Vjacheslavovich

Snegirev Vladimir Jur'Evich

Valiakhmetov Al'Fed Khabibullaevich

Krasnojartsev Aleksej Anatol'Evich

Nikolaev Oleg Anatol'Evich

Dates

2014-04-27—Published

2012-11-30—Filed