SU484697A3 - The method of redistribution of iron into steel - Google Patents

The method of redistribution of iron into steel

Info

Publication number
SU484697A3
SU484697A3 SU1307579A SU1307579A SU484697A3 SU 484697 A3 SU484697 A3 SU 484697A3 SU 1307579 A SU1307579 A SU 1307579A SU 1307579 A SU1307579 A SU 1307579A SU 484697 A3 SU484697 A3 SU 484697A3
Authority
SU
USSR - Soviet Union
Prior art keywords
hydrocarbons
oxygen
steel
gas
melt
Prior art date
Application number
SU1307579A
Other languages
Russian (ru)
Inventor
Кнюппель Хельмут (Фрг)
Бротцманн Карл (Фрг)
Фассбиндер Ханс-Георг (Фрг)
Савард Ги (Канада)
Ли Роберт (Канада)
Original Assignee
Эйзенверкгезельшафт Максимилиансхютте М.Б.Х (Фирма)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Эйзенверкгезельшафт Максимилиансхютте М.Б.Х (Фирма) filed Critical Эйзенверкгезельшафт Максимилиансхютте М.Б.Х (Фирма)
Application granted granted Critical
Publication of SU484697A3 publication Critical patent/SU484697A3/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/48—Bottoms or tuyéres of converters
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/34—Blowing through the bath

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Description

(54) СПОСОБ ПЕРЕДЕЛА ЧУГУНА В СТАЛЬ(54) METHOD REDUCED CHIGUN TO STEEL

1one

Изобретение относитс  к области черной металлургии, конкретнее к сталеплавильному -производству.The invention relates to the field of ferrous metallurgy, more specifically to steelmaking production.

Известны способы получени  стали из чугуна путем ввода в расплав ниже его поверхности струи кислорода, окруженной струей углеводородов. Но в известных способах сравнительно низка  стойкость футеровки и сопел в сталеплавильном агрегате в св зи с тем, что в расплав в качестве углеводородов ввод т только природный газ и не регламентируют соотношение давлений потоков кислорода и газа.Methods are known for producing steel from cast iron by introducing into the melt below its surface a stream of oxygen surrounded by a stream of hydrocarbons. But in the known methods, the resistance of the lining and nozzles in the steelmaking unit is relatively low due to the fact that only natural gas is introduced into the melt as hydrocarbons and does not regulate the ratio of the pressures of oxygen and gas flows.

С целью увеличени  стойкости сталеплавильного агрегата и сопел предлагают способ , по которому углеводороды ввод т в расплав в количестве 1 -10% по отношению к количеству кислорода, а в качестве углеводородов используют дополнительно пропан, доменный газ, коксовый газ раздельно или в смеси, причем давление углеводородов поддерживают в пределах 20-50% от давлени  кислорода. Углеводороды ввод т в виде паров .In order to increase the resistance of the steelmaking unit and nozzles, a method is proposed by which hydrocarbons are introduced into the melt in an amount of 1-10% relative to the amount of oxygen, and additional hydrocarbons, blast furnace gas, and coke oven gas are used as hydrocarbons separately or in a mixture hydrocarbons maintained within 20-50% of the pressure of oxygen. Hydrocarbons are introduced as vapors.

Предлагаемый способ реализуют в конвертере на обычных и фосфористых чугунах.The proposed method is implemented in the Converter for conventional and phosphorous cast iron.

Преимущественно расход пропана составл ет 3% относительно расхода кислорода, при использовании коксового газа его расход составл ет пре1 мущественно 10% от расхода кислорода. При образовании настыли на устье сопла она может быть расплавлена кратковременной продувкой смесью кислорода и азота в качестве обволакивающего газа при содержании кислорода в пределах 10-20%. Давлен)1е кислорода поддерживают преимущест1венно в пределах 5-10 атм.Advantageously, the propane consumption is 3% relative to the oxygen consumption, when using coke oven gas, its consumption is mainly 10% of the oxygen consumption. When nastily is formed at the mouth of the nozzle, it can be melted by briefly purging with a mixture of oxygen and nitrogen as a covering gas with an oxygen content in the range of 10–20%. Davlen) 1e oxygen is maintained predominantly within 5-10 atm.

Струи дуть  могут быть введены в расплав вертикально или наклонно. Обволакивающие газы могут вводить в расплав последовательно по ходу продувки, например вначале продувки - газ, содержащий водород, а в конце продувки - газ, в состав которого не входит водород.Jet blowing can be introduced into the melt vertically or obliquely. The shielding gases can be introduced into the melt successively along the course of the purge, for example, at the beginning of the purge, a gas containing hydrogen, and at the end of the purge, a gas that does not contain hydrogen.

П р е д м е т изобретени PREAMETE OF THE INVENTION

Claims (4)

1. Способ передела чугуна в сталь, включающий в раснлав ниже его поверхности струи К1 слорода, окруженной струей углеводородов , отличающийс  тем, что, с целью повышени  срока службы конвертера ч сопел, углеводороды ввод т в расплав в количестве 1-ilO% по отношению к количеству кислорода.1. The method of casting iron into steel, which includes a jet K1 of hydrogen surrounded by a jet of hydrocarbons in the ramlav below its surface, characterized in that, in order to increase the service life of the nozzle converter, hydrocarbons are introduced into the melt in an amount of 1-ilO% relative to the amount of oxygen. 2. Способ по п. 1, отличающийс  тем, что в качестве углеводородов ввод т отдельно или в смеси пропан, доменный газ, коксовый газ.2. A method according to claim 1, characterized in that as hydrocarbons propane, blast furnace gas, coke oven gas is introduced separately or in a mixture. 3.Способ по пп. 1, 2, отличающийс  тем, что углеводороды ввод т в виде паров.3. Method according to paragraphs. 1, 2, characterized in that the hydrocarbons are introduced as vapors. 4.Способ по пп. 1, 2, 3, отличающийс  тем, что давление углеводородов поддерживают в пределах 20-50% от давлени  кислорода .4. Method according to paragraphs. 1, 2, 3, characterized in that the pressure of the hydrocarbons is maintained within 20-50% of the oxygen pressure.
SU1307579A 1968-02-24 1969-02-18 The method of redistribution of iron into steel SU484697A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1583968 1968-02-24

Publications (1)

Publication Number Publication Date
SU484697A3 true SU484697A3 (en) 1975-09-15

Family

ID=5679593

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1307579A SU484697A3 (en) 1968-02-24 1969-02-18 The method of redistribution of iron into steel

Country Status (2)

Country Link
DE (1) DE1583968B1 (en)
SU (1) SU484697A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4238970C1 (en) * 1992-11-19 1994-04-21 Kct Tech Gmbh Process for blowing oxidizing gases into metal melts

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE56395C (en) * H. GlNK in Rosenberg, Oberpfalz Bessemer pear with slot-shaped wind inflow openings
DE890352C (en) * 1940-11-08 1953-09-17 Thyssen Huette Ag Process for the production of Thomas and Bessemerstahl
DE904180C (en) * 1941-06-15 1954-02-15 Thyssen Huette Ag Converter bottom with bubble hole-free spaces
DE966895C (en) * 1950-02-21 1957-09-19 Mannesmann Huettenwerke Ag Converter bottom
DE1138802B (en) * 1956-10-17 1962-10-31 Siderurgie Fse Inst Rech Wind box designed for a bottom-blowing converter for introducing powdery substances together with the blowing agent into the converter
DE1197487B (en) * 1958-07-24 1965-07-29 Veitscher Magnesitwerke Ag Pair of duesen stones, especially made of magnesite, for converter floors
FR1450118A (en) * 1965-10-14 1966-05-06 Philips Nv Headlight for vehicles

Also Published As

Publication number Publication date
DE1583968B1 (en) 1971-11-11

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