RU99103721A - METHOD FOR Smelting RAIL STEEL OF HIGH PURITY BY NON-METAL INCLUSIONS IN THE ELECTRIC MELTING ARC - Google Patents

METHOD FOR Smelting RAIL STEEL OF HIGH PURITY BY NON-METAL INCLUSIONS IN THE ELECTRIC MELTING ARC

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Publication number
RU99103721A
RU99103721A RU99103721/02A RU99103721A RU99103721A RU 99103721 A RU99103721 A RU 99103721A RU 99103721/02 A RU99103721/02 A RU 99103721/02A RU 99103721 A RU99103721 A RU 99103721A RU 99103721 A RU99103721 A RU 99103721A
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RU
Russia
Prior art keywords
steel
amount
high purity
furnace
rail steel
Prior art date
Application number
RU99103721/02A
Other languages
Russian (ru)
Other versions
RU2198228C2 (en
Inventor
А.И. Катунин
В.Ф. Царев
Н.А. Козырев
М.В. Обшаров
А.Л. Никулина
А.В. Шуклин
Original Assignee
Открытое акционерное общество "Кузнецкий металлургический комбинат"
Filing date
Publication date
Application filed by Открытое акционерное общество "Кузнецкий металлургический комбинат" filed Critical Открытое акционерное общество "Кузнецкий металлургический комбинат"
Priority to RU99103721/02A priority Critical patent/RU2198228C2/en
Priority claimed from RU99103721/02A external-priority patent/RU2198228C2/en
Publication of RU99103721A publication Critical patent/RU99103721A/en
Application granted granted Critical
Publication of RU2198228C2 publication Critical patent/RU2198228C2/en

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Claims (1)

Способ выплавки рельсовой стали повышенной чистоты по неметаллическим включениям в дуговой электросталеплавильной печи, включающий завалку шихты, плавление, окислительный и восстановительный периоды, выпуск стали из печи, отличающийся тем, что в завалку дополнительно вводится железная руда в количестве 0,5-1,0 кг на тонну метадлошихты, после скачивания окислительного шлака в конце окислительного периода в печь присаживается смесь, состоящая из плавикового шпата и извести в соотношении (0,1-0,5):(1,5-2,5) в количестве 1,5-3,5% от массы металла, в восстановительный период проводится дополнительное раскисление шлака смесью порошка кокса, дробленого ферросилиция, гранулированного алюминия в количестве по 0,80-1,20 кг на тонну стали каждого, а во время выпуска из печи в ковш присаживается смесь, состоящая из извести, плавикового шпата, силикокальция и чушкового алюминия в соотношении (1,2-1,5): (0,3-0,4):(0,65-0,85):(0,010-0,020) при расходе смеси 14-20 кг на тонну стали.The method of smelting high-purity rail steel by non-metallic inclusions in an electric arc furnace, including charging the charge, melting, oxidation and reduction periods, the release of steel from the furnace, characterized in that the iron ore is additionally introduced into the filling in an amount of 0.5-1.0 kg per tonne of meta-charge, after downloading the oxidizing slag at the end of the oxidation period, a mixture consisting of fluorspar and lime in the ratio (0.1-0.5) :( 1.5-2.5) in the amount of 1.5- 3.5% by weight of metal, in re During the recovery period, additional slag deoxidation is carried out with a mixture of coke powder, crushed ferrosilicon, granular aluminum in an amount of 0.80-1.20 kg per ton of steel each, and during discharge from the furnace, a mixture consisting of lime, fluorspar, silicocalc and pig aluminum in the ratio (1.2-1.5): (0.3-0.4) :( 0.65-0.85) :( 0.010-0.020) with a mixture flow rate of 14-20 kg per ton of steel .
RU99103721/02A 1999-02-22 1999-02-22 Method of melting rail steel of high purity relative to nonmetallic inclusions in electric arc steel melting furnace RU2198228C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU99103721/02A RU2198228C2 (en) 1999-02-22 1999-02-22 Method of melting rail steel of high purity relative to nonmetallic inclusions in electric arc steel melting furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU99103721/02A RU2198228C2 (en) 1999-02-22 1999-02-22 Method of melting rail steel of high purity relative to nonmetallic inclusions in electric arc steel melting furnace

Publications (2)

Publication Number Publication Date
RU99103721A true RU99103721A (en) 2000-12-27
RU2198228C2 RU2198228C2 (en) 2003-02-10

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RU (1) RU2198228C2 (en)

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