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2 350 658

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(51)

IPC

C21B5/04(2006-01-01)

(21) (22)

Application

2007110574/02, 2007-03-22

(24)

Start date

2007-03-22

(22)

Actual filing date

2007-03-22

(45)

Published

2009-03-27

(72)

Inventor

Kushnarev Aleksej VladislavovichGil'Manov Marat RimatovichBobrov Vladimir PavlovichSukharev Anatolij Grigor'Evich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD FOR BLAST-FURNACE SMELTING ON MAGNESIA-ALUMINOUS SLAGS Russian patent published in 2009 - IPC C21B5/04

Abstract RU 2350658 C2

FIELD: technological processes; metallurgy.

SUBSTANCE: invention is related to ferrous metallurgy and may be used in blast-furnace production. Method for smelting on magnesia-aluminous slags with content of Al₂O₃ and MgO from 5 to 20% of each component includes charge loading, insufflation of high-temperature combined blast with application of aluminous and magnesia additives. Iron-ore charge is formed with silicon module SiO₂/Al₂O₃ within the limits of 2.2-2.5 and with magnesia index of MgO/(CaO+MgO) within the limits of 0.30-0.35, and as a result low-sulfury cast iron is produced with lowered basicity of slag CaO/SiO₂, equal to 0.78-0.92.

EFFECT: higher castable and sulfur-absorbing capacity of slag at its reduced basicity.

2 tbl

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RU 2 350 658 C2

Authors

Kushnarev Aleksej Vladislavovich

Gil'Manov Marat Rimatovich

Bobrov Vladimir Pavlovich

Sukharev Anatolij Grigor'Evich

Dates

2009-03-27—Published

2007-03-22—Filed