SU711107A1 - Method of metal charge preparation for its reprocessing in oxygen converter - Google Patents

Method of metal charge preparation for its reprocessing in oxygen converter Download PDF

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Publication number
SU711107A1
SU711107A1 SU782603365A SU2603365A SU711107A1 SU 711107 A1 SU711107 A1 SU 711107A1 SU 782603365 A SU782603365 A SU 782603365A SU 2603365 A SU2603365 A SU 2603365A SU 711107 A1 SU711107 A1 SU 711107A1
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SU
USSR - Soviet Union
Prior art keywords
reprocessing
metal charge
oxygen converter
charge preparation
scrap
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Application number
SU782603365A
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Russian (ru)
Inventor
Модест Петрович Квитко
Давид Борисович Марцинковский
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Центральный Ордена Трудового Красного Знамени Институт Черной Металлургии Им. И.П.Бардина
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Priority to SU782603365A priority Critical patent/SU711107A1/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

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  • Treatment Of Steel In Its Molten State (AREA)

Description

(54) СПОСОБ ПОДГОТОВКИ МЕТАЛЛОШИХТЫ К ПЕРЕДЕЛУ В КИСЛОРОДНОМ КОНВЕРТОРЕ(54) METHOD FOR PREPARING METAL DRILL TO REDUCTURE IN OXYGEN CONVERTER

ном процессе. Экономи  углерода чугуна позвол ет увеличить долю скрапа в металлошихте .Mr. process. The carbon economy of cast iron allows to increase the scrap fraction in the metal charge.

Присадки углеродсодержащих материалов (антрацит, кокс, электродный бат) на скрап в количестве 0,01-5,0 кг/т расплава позвол ют увеличить содержание углерода до уровн , определ емого пределом растворимости при получаемых температурах расплава. Присадка углеродсодержащего материала менее 0,01 кг/т не дает эффекта из-за полного окислени  углерода кислородом воздуха; присадки более 5,0 кг/т приводит к перерасходу науглероживател  и выносу неусвоенного углерода из ковша.The addition of carbon-containing materials (anthracite, coke, electrode bat) to scrap in an amount of 0.01-5.0 kg / ton of melt allows to increase the carbon content to the level determined by the solubility limit at the resulting melt temperatures. The addition of carbon-containing material less than 0.01 kg / ton does not give effect due to the complete oxidation of carbon with oxygen in the air; Additives of more than 5.0 kg / ton lead to over-expenditure of the carburizer and removal of undigested carbon from the ladle.

Пример. В чугуновозном ковше с помощью кислородно-топливной горелки с расходом природного газа 25 стали и кислорода 55 в течение 8 мин подвергают нагреву 1,5 т скрапа. Температура нагрева скрапа 1250°С. Затем на скрап присаживают электродный бой в количестве 0,7 кг/т металлошихты и из вагранки сливаетс  чугун химического состава, %: С - 4,3; Мп - 1,6; Si - 0,8; Р -- 0,2. Получают расплав состава, °/о: С - 4,2; Мп - 0,91; ; S - 0,68; Р - 0,014. Этот расплав сливает . с  в 10-т конвертор после завалки 1,5 т холодного скрапа, присаживаетс  перва  порци  извеЪти 0,4 т и производитс  продувка через 3-сопловую фурму с расходом кислорода 40 . На б-ой мин продувки присаживают вторую порцию извести 0,3 т иExample. In an iron ladle with an oxygen-fuel burner with a consumption of natural gas 25 steel and oxygen 55 for 8 min is subjected to heating 1.5 tons of scrap. Scrap heating temperature 1250 ° С. Then, electrode strike in the amount of 0.7 kg / t of metal charge is placed on the scrap and cast iron of chemical composition is discharged from the cupola,%: C - 4.3; MP - 1.6; Si - 0.8; P - 0.2. Get the melt composition, ° / o: C - 4.2; MP - 0.91; ; S — 0.68; P - 0.014. This melt merges. A 10-ton converter after filling 1.5 tons of cold scrap, sits down the first portion of 0.4 tons and blows through a 3-nozzle with an oxygen consumption of 40. On the second minute of the blowdown, a second portion of lime is put down 0.3 tons and

на 14-ой - заканчивают продувку при со держании 0,15% углерода в металле.on the 14th — purge is completed with a content of 0.15% carbon in the metal.

Раскисление, выпуск и разливка металла производ тс  обычным методом.The deacidification, production and casting of the metal are carried out in the usual manner.

Применение вышеуказанных примеров позвол ет увеличить долю скрапа в металлошихте до 30% и более, а также сократить на UO-40% необходимый дл  нагрева скрапа расход топлива.The use of the above examples allows increasing the scrap fraction in the metal charge up to 30% or more, and also reduces the fuel consumption required for heating the scrap by UO-40%.

Claims (2)

1.Квитко М. П., Афанасьев С. Г. Кислородно-конверторный процесс, М., Металлургиздат , 1974. с. 22-28.1. Kvitko MP, Afanasyev S. G. The oxygen-converter process, M., Metallurgizdat, 1974. p. 22-28. 2.Патент США № 3880649, кл. 75-60, 1975.2. US patent number 3880649, cl. 75-60, 1975.
SU782603365A 1978-04-11 1978-04-11 Method of metal charge preparation for its reprocessing in oxygen converter SU711107A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU782603365A SU711107A1 (en) 1978-04-11 1978-04-11 Method of metal charge preparation for its reprocessing in oxygen converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782603365A SU711107A1 (en) 1978-04-11 1978-04-11 Method of metal charge preparation for its reprocessing in oxygen converter

Publications (1)

Publication Number Publication Date
SU711107A1 true SU711107A1 (en) 1980-01-25

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